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BWN-02605.201 Rev 0 Process Description Plant Bowen

Confidential Information of 139

/s/ Gary Smith Approved Plant Review Board /s/ Tim Crump Approved Operations Manager /s/ Tim Banks Approved Plant Manager Date: 07-12-2010

PLANT BOWEN UNITS 1, 2, 3, & 4 FLUE GAS DESULFURIZATION SYSTEM

GYPSUM DEWATERING SYSTEM PROCESS DESCRIPTION Document No. 2605.201

NOTE: If you are working with a printed copy of this document, it is NOT a Controlled Copy.

Please be sure to check online for the most recent revision.

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2605.201 PROCESS DESCRIPTION 5

2605.201.1 Safety Considerations 5

2605.201.2 Process Flow Description 6

2605.201.3 Process Description 7

2605.201.3.1 Introduction 7

2605.201.3.2 System Components 9

2605.201.3.2.1 Wash Water Storage Tank (DG-TK-5801) 10

2605.201.3.2.2 Hydrocyclones (DG-HY-5804/5814) 11

2605.201.3.2.3 Gypsum Vacuum Belt Filters (DG-FL-5804 & DG-FL-5814) 13

2605.201.3.2.4 Gypsum Vacuum Belt Filter Tail Section 15

2605.201.3.2.5 Gypsum Vacuum Belt Rollers Head And Tail Pulleys 16

2605.201.3.2.6 Gypsum Vacuum Belt Rollers Head Pulleys 17

2605.201.3.2.7 Gypsum Vacuum Belt Rollers 18

2605.201.3.2.8 Vacuum Pumps (DG-PU-5808 & DG-PU-5818) 19

2605.201.3.2.9 Cloth/Belt Wash Tanks & Pumps (DG-TK/PU-5806 & DG-TK/PU-5816) 20

2605.201.3.2.10 Cloth Wash Recovery Tank Agitator (DG-AG-5807 & DG-AG-5817) 22

2605.201.3.2.11 Recovery Tanks & Recirc. Pumps (DG-TK-5807/17 & DG-PU-5809/19) 23

2605.201.3.2.12 Filtrate Pumps DG-PU-5805A/B & DG-PU-5815A/B) 25

2605.201.3.2.13 Dewatering System A & B Nos. 1 & 2 Filtrate Receiver (DG-TK-5805A & B/5815A & B) 27

2605.201.3.2.14 Wash Water Distribution Pumps (DG-PU-5802A/B/C) 29

2605.201.3.2.15 Wash Water Automatic Backwash Strainers (DG-SN-5800A/B) 30

2605.201.3.2.16 Flop Gates FG1 & FG2 (GX-FG-5841/5842) 31

2605.201.3.2.17 30” Belt Conveyor BCG1A & B (GX-CN-5843/5844) 32

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2605.201.3.2.18 30” Belt Conveyor BCG2A & B (GX-CN-5846/5847) 34

2605.201.3.2.19 Tripper TRP1 & TRP2 (GX-EQ-5849/5850) 36

2605.201.3.2.20 990H Loader 37

2605.201.3.2.21 Loadout Hopper LH1 & LH2 (GX-HP-5853/5856) 40

2605.201.3.2.22 48” Belt Conveyor BCG3 (GX-CN-5851) 41

2605.201.3.2.23 48” Belt Conveyor BCG4 (GX-CN-5859) 43

2605.201.3.2.24 Primary Swing Arm Sampling System (GX-CN-5861A) 45

2605.201.3.2.25 Secondary Swing Arm Sampling System (GX-CN-5861B) 47

2605.201.3.2.26 Sampling System Crusher 49

2605.201.3.2.27 Swing Arm Sampler Rejects Conveyor System (GX-CN-5861C) 50

2605.201.3.2.28 Belt Scale System (GX-SA-5862) 51

2605.201.3.2.29 Surge Bin (GX-BN-5866) 52

2605.201.3.2.30 Shut Off Gate (DG-XV-5866C) 53

2605.201.3.2.31 Retractable Pant Leg Chute (GX-FG-5865) 54

2605.201.3.2.32 Flop Gate FG3 (GX-FG-5865) 55 2605.201.3.2.33 Pant Leg Chute & Flop Gate HPU Power Pack 56

2605.201.3.2.34 Gypsum Rail Car & Truck Scale 57

2605.201.3.2.35 Control Air Compressor System (DG-CO-5820A/B) 58

2605.201.3.2.36 Control Air Pre-Filter (DG-FL-5820A/B/C/D/G/H/J/K) 59

2605.201.3.2.37 Control Air Dryers (DG-DY-5820A & B) 60

2605.201.3.2.38 Control Air After-Filter (DG-FL-5820E/F/L/M) 61

2605.201.3.2.39 Control Air Receiver Tank (DG-RV-5820/5810/5811) 62

2605.201.3.2.40 Bridge Crane (DG-HO-5822) 63

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2605.201.3.3 Summarized Controls Description 64 2605.201.3.4 Detailed Controls Description 66

2605.201.4 Process Flow Description 82 2605.201.5 Drawing References 88

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2605.201 P R OC E S S DE S C R IP TION 2605.201.1 S afety C ons iderations

1. All Operating Companies Safety and Health Manuals shall be followed at all times.

2. The Southern Company Generation Clearance Procedure shall be followed at all times.

3. A thorough Job Safety Briefing (JSB) shall be completed before beginning work.

4. Employees should always use the proper Personal Protection Equipment (PPE) for the task they are performing.

5. Personnel must observe standard safety precautions when working around or with high temperature piping systems.

6. Personnel must be aware that components of this system are maintained in an automatic mode of operation. The equipment may start at any time without warning.

7. Personnel should remain clear of all rotating machinery, whether operating or in standby, at all times during unit operation.

8. Rotating machinery must never be placed in service without the appropriate equipment guards in place.

9. No attempt should be made to bypass or eliminate equipment safety interlocks. Doing so could result in equipment damage and possible injury to plant personnel.

10. Follow proper Confined Space Entry Procedures when entering confined spaces.

11. When employees are performing work on or associated with exposed lines or equipment energized at 50 volts or more, persons trained in First Aid including Cardiopulmonary Resuscitation (CPR), shall be available within 4 minutes per OSHA 1910.269 requirements.

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2605.201.2 P roc es s F low Des cription The following subsections contain function and description of major components within this system. This procedure contains summarized and detailed controls descriptions of this system. This procedure contains a step by step process flow description of this system.

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2605.201.3 P roc es s Des c ription 2605.201.3.1 Introduc tion

Slurry Feed Process

Gypsum slurry is transferred to the dewatering system in three lines. The first line is from the Unit 1 and 2 gypsum transfer pumps. The second line is from the Unit 3 and 4 gypsum transfer pumps. The third line is a common spare for the two main lines. Gypsum slurry shall be delivered to the system at 1,067,748 lb/hr (20% solids by weight.) The three lines will collect in a header at the dewatering building. The header feeds one line to each filter with a spare connection for the future filter. An automated valve isolates both filter feed lines. Connections are provided for the manual flushing and draining of the header and feed lines.

Dewatering Process

Gypsum slurry of 20% suspended solids by weight will be provided to the Dewatering System at 106.8 TPH solids. The slurry is fed to one of the two dewatering trains. Primary hydrocyclones dewater the slurry to 50% solids. The underflow is fed directly to the vacuum belt filter. The overflow is directed to the gypsum dewatering area sump. There are 14 hydrocyclones with 3 as spares. Individual hydrocyclones are to be isolated as the inlet flow changes to maintain the inlet pressure in the optimum range. This will ensure that the hydrocyclones dewater the slurry to 50% solids.

The gypsum then flows to the vacuum belt filter and is spread across the belt. A cake wash flow is sprayed onto the gypsum on the belt to wash impurities such as chlorides from the gypsum. The vacuum pump and filtrate receiver draw water off of the gypsum as it travels along the filter. The filtrate is pumped to the return water system. The gypsum, at 90% solids, is then discharged to the conveying system for storage. The belt and cloth are washed to collect fugitive gypsum. The collected wash water is then used to wash the gypsum cake.

The 3x50% gypsum wash water pumps provide liquid ring water to the vacuum pump; make up water, seal water, and utility station water to the dewatering system. When the filter is not running, only one pump shall run with the pump minimum flow recirculating to the storage tank. When the filter is in operation, two pumps shall run and the recirculation flow shall stop.

The compressed air system provides instrument air to the dewatering system and service air to the utility stations.

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2605.201.3.1 Introduc tion

Gypsum Handling Once the gypsum leaves the dewatering system, it is directed onto one of two conveyors via a manually operated flop gate. These conveyors transport the gypsum to the storage barn. The conveyor discharges the gypsum to a conveyor that runs along the storage barn where it is unloaded via tripper. The tripper is indexed along the conveyor to distribute the gypsum inside the storage barn. From the storage barn, the gypsum is loaded by front end loader onto a conveyor via load out hopper. The gypsum is then transported onto a second conveyor. The gypsum is then loaded into the surge bin for the rail loader where it is loaded into the rail cars via pant leg chute. Along the way to the surge bin, the gypsum is sampled and weighed.

Gypsum Handling Operations

The conveyor system is controlled in two parts, the dewatering system load out and the rail car load out. The dewatering system conveyors are controlled from the dewatering system. An automatic start sequence will start the selected conveyors, then the dewatering system, and auxiliary equipment. The rail car load out conveyors are controlled from the rail load out control room. An automatic start sequence will start the conveyors. The load out hopper and sampler are started remotely. The weigh belt is controlled locally.

Pull cord emergency stop switches are installed on all conveyors and act to stop equipment immediately. These switches are connected directly to the MCC for motor stopping as well as the DCS for annunciation and interlocking. Activation of the switch will stop its’ conveyor as well as adjacent conveyors, trippers and associated equipment.

When a train arrives at the rail load out tower, the operator starts the loading sequence. The train is properly located via radio communication between the operator and the train engineer. The pant leg chute is moved from its rest position to the parked position and the flop gate properly positioned. The surge bin cut-off gate is opened and gypsum loading commences. The rail load out tower operator is responsible for starting the conveyor loading system via a remote DCS operator terminal. The operator observes the car loading and communicates with the train engineer to control the train speed. The flop gate is used to switch from one car to another. When the cars are loaded, the surge bin cut-off gate is closed, the conveyors are stopped and the pant leg chute is moved to the rest position.

Additional monitoring will be provided by the use of CCTV cameras. These will be installed at the storage barn, the loadout area and the DCS room.

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2605.201.3.2 S ys tem C omponents

The Gypsum Dewatering System consists of a Gypsum Wash Assembly including a Wash Water Storage Tank, 14 Hydrocyclones, 2 Gypsum Vacuum Belt Filters, Gypsum Vacuum Belt Filter Tail Section, Gypsum Vacuum Belt Rollers Head & Tail Pulleys, Gypsum Vacuum Belt Rollers Head Pulleys and Gypsum Vacuum Belt Rollers. The Wash Assembly also includes Vacuum Pumps, Cloth/Belt Wash Tanks and Pumps, Cloth Wash Recovery Agitator, Recovery Tank and Recirculation Pumps, Filtrate Pumps, Dewatering System A & B, No.s 1 & 2 Filtrate Receiver, Wash Water Pumps and Wash water Automatic Backwash Strainers. The Conveyor System includes Flop Gates, 30” Belt Conveyor BCG1A & B, 30” Belt Conveyor BCG2A & B, Tripper TRP1 & TRP2, 990H Loader, Loadout Hopper LH1 & LH2, and 48” Conveyors BCG3 & BCG4. The Gypsum Sampling System includes the Primary and Secondary Swing Arm Sampling System, Sampling System Crusher, Swing Arm Sampling System Rejects Conveyor System and Belt Scale System. The Gypsum Railcar System includes a Surge Bin, Shutoff Gate, Retractable Pant Leg Chute, Flop Gate, Pant Leg Chute and Flop Gate HPU Power Pack, and a Gypsum Railcar and Truck Scale. Other equipment in the Gypsum Dewatering System includes a Control Air Compressor System, Control Air Pre-Filter, Control Instrument Air Dryers, Control Air After-Filter, Control Air Receiver Tank and a Bridge Crane.

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2605.201.3.2.1 Was h Water S torage T ank (DG -T K -5801)

Function The Gypsum Wash Water Storage Tank (DG-TK-5801) is the makeup water reservoir for Gypsum Dewatering System A and B and furnishes service water to service water users in 23 service utility stations throughout the Gypsum Dewatering Area. Description

The Wash Water Storage Tank is a field erected, welded carbon steel tank with level indication, vent, overflow and drain. Quantity 1 Dimensions, H x D 40’ x 40’ Total Capacity 357,200 gallons Working Capacity 297,600 gallons Working Retention Time 8 hours @ 2.5% sulfur fuel Construction Welded Carbon Steel Cover Sloped, center supported Manufacturer Fisher Tank Company Inputs Auto Backwash Strainer discharge Outputs Gypsum Wash Water Pump suction

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2605.201.3.2.2 Hydrocyclones (DG-HY-5804/5814)

Function The dewatering hydrocyclone (cyclone) dewaters the gypsum slurry from 20% solids to 50% solids.

Description

The dewatering hydrocyclone consists of a distributor, 14 hydrocyclones, underflow tank, and overflow tank. Three of the hydrocyclones are spare. Individual hydrocyclones are separated from the distributor by manual valves. The slurry enters the hydrocyclone tangentially and relies on centrifugal force to keep heavy particles near the wall while fine particles and water stay to the center. The heavy particles travel to the bottom of the hydrocyclone and flow out of the top into the overflow tank. This liquid is discharged into the dewatering building trench which leads to the dewatering area sump. Quantity 2, 1 per filter train Type Hydrocyclone Cluster Feed Flowrate 1888 gpm Feed Solids Concentration 20% solids Manufacturer and Model Weir Slurry, CAVEX cyclone model 14x150CVX6 Quantity of Hydrocyclones 11 operating + 3 spare per cluster Manifold Pressure 24 – 32 psig Overflow Flowrate 1326 gpm Underflow Flowrate 562 gpm Underflow Solids Concentration 50% solids

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2605.201.3.2.2 Hydrocyclones (DG-HY-5804/5814)

The CAVEX cyclone is a heavy duty design comprising several rigid casing components with corresponding internal, replaceable wear liners. The casings are fastened together by metric bolts or quick release clamps. The cyclone liner system is designed so that no adhesives are required to fasten the liners to the casing. Each liner is molded to fit precisely into its respective casing components. These features enable plant personnel to readily replace worn components without the delays commonly associated with glued liners.

The cyclones’ casings are made of Dough Moulding Compound (DMC). DMC is a high-tech, pressure molded, fire-reinforced polymer with the properties of strength, relative lightness, inherent corrosion resistance, exact replication and lower cost. The liners are molded from specially formulated natural rubber compounds. Different wear resistant materials suit different wear environments, for which the Warman formulated rubber has proven to be the most universally wear resistant and cost effective material. Typically, wear is greatest in the lowest section of the cyclone, particularly the spigot. In some applications, ceramic lower cones and spigot liners have proven a cost effective substitute for rubber.

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2605.201.3.2.3 G yps um V ac uum B elt F ilters (DG -F L -5804 & DG -F L -5814)

Function The Gypsum Vacuum Belt Filters (DG-FL-5804/5814) remove water from gypsum.

Description

The belt filter consists of a cloth belt, a rubber belt, a drive roll, a vacuum box and vacuum header. The cloth belt acts as the filtering media. It runs on rollers and the rubber belt and is tensioned and aligned by the pneumatic system. The rubber belt supports the cloth belt while the gypsum is on the cloth. The belt is driven by a 100 hp motor with a variable speed drive. This belt has curbs on the side and channels on the bottom that lead to perforations in the center. The curbs contain the slurry while the channels direct water and air from the gypsum to the holes in the center of the belt. The vacuum box is located under the holes in the belt and is used to seal the vacuum system and belt. The vacuum box has wear belts, which are lubricated with water, on which the rubber belt slides. The vacuum belt can be tilted via the pneumatic system for easy maintenance. The vacuum box is connected to the vacuum header at 29 points along the filter. The vacuum header directs the liquid and air to the filtrate receivers through two 30 inch connections. The dewatering gypsum is discharged from the end of the belt into a pant leg chute with a motor operated flop gate.

Gypsum vacuum belt filters are manufactured using painted carbon steel as standard frame materials (optional: 316, 316L and 304L steel) and SRP rubber, hot vulcanized with chemically bonded curbs (optional: EPDM or Butyl Rubber). Made by RPA Process Technologies, the filter cloth media of belt filters can be monofilament, multifilament or felt with a wide range of mesh sizes, porosities and breaking strengths.

Designed for maximum operating temperatures of 230 oF (110 oC), vacuum pressures from -100mm Hg to -650mm Hg and belts speeds ranging from 3.28 to 164ft/min. Other standard features of the vacuum belt filters include:

• Factory-vulcanized endless belt flexes and follows pulley curbs

• Rubberized pulleys with a one-piece

steel shaft • Belt support system featuring water

lubricated endless wear belts and replaceable HDPE slide rails

• Pneumatically actuated cloth tension

system with no counterweights

• Structural steel frame with no welds • Easy access pneumatic tilt vacuum box • Rigid filtrate/gas pipes • Unique articulated pivot cloth tracking

system • Drip-proof discs protect pulley and roller

bearings

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2605.201.3.2.3 G yps um V ac uum B elt F ilters (DG -F L -5804 & DG -F L -5814)

Horizontal Vacuum Belt Filters (RPA Process Technologies)

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2605.201.3.2.4 G yps um V ac uum B elt F ilter T ail S ec tion

Function The Gypsum Vacuum Belt Filter Tail Section supports the tail end belt roller of the Gypsum Vacuum Belt Filter.

Description

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2605.201.3.2.5 G yps um V ac uum B elt R ollers Head and T ail P ulleys

Function The Gypsum Vacuum Belt Rollers Head and Tail Pulleys anchor the Gypsum Vacuum Belt and transmit the motive force for the Gypsum Vacuum Belt.

Description

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2605.201.3.2.6 G yps um V ac uum B elt R ollers Head P ulleys

Function The Gypsum Vacuum Belt Rollers Head and Tail Pulleys anchor the Gypsum Vacuum Belt and transmit the motive force for the Gypsum Vacuum Belt.

Description

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2605.201.3.2.7 G yps um V ac uum B elt R ollers

Function The Gypsum Vacuum Belt Rollers allow for the movement of the Gypsum Vacuum Belt and support the gypsum as it is dewatered.

Description

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2605.201.3.2.8 Vacuum Pumps (DG -P U-5808 & DG -P U-5818)

Function The vacuum pump generates the vacuum force needed to draw water from gypsum slurry while on the belt filter.

Description

The vacuum pump is a liquid ring type pump. Liquid ring water is supplied to an external connection of the vacuum pump. A vaned rotor is mounted eccentrically in the housing. The open volume between the vanes varies due to the eccentric rotation of the rotor within the liquid ring. The change in volume forces air into and out of the pump through ports on the end of the pump. Liquid ring water exits the pump with the exhaust. The water is separated from the exhaust stream and is collected for cloth and belt washing. The exhaust of the pump is routed outside the building. Quantity 2, 1 per filter train Model Nash 2BE3 72 Flow Rate 18,00 acfm Inlet Pressure 5 psia Break Horsepower 1,060 hp Motor Speed 1200 rpm Motor hp 1,250 hp

Vacuum pumps are manufactured by Nash (a subsidiary of the Gardner Denver company). Pumps are model Nash 3BE 72 and have a V-belt drive, with a flow rate of 18,200 acfm, with an inlet pressure of 5 psia, brake horsepower of 1,060 hp. The specified motor speed is 1,200 rpm with 1250 hp.

Illustrative Models of Vacuum Pumps (NASH)

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2605.201.3.2.9 C loth/B elt Was h Tanks & P umps (DG -T K /P U-5806 & DG -T K /P U-5816)

Function The Cloth/Belt Wash Tank and Pump cleans the Gypsum Vacuum Belt Filter after the gypsum is dewatered. Description

The liquid ring water from the vacuum pump is collected in a small storage tank. Makeup water is supplied to the tank and controlled by a float valve. The liquid is pumped to a manifold on the belt filter that supplies water for cloth and belt washing and belt lubrication. A drip pan is located under the area of the spray nozzles to collect the water to be reused for cake washing. Liquid Ring Collection Tank Quantity 2, 1 per filter train Dimensions, H x D 4’–7” x 5’–3” Total Capacity 690 gallons Construction HDPE Operating Pressure Atmosphere Inputs Liquid ring water from vacuum pump and makeup water Outputs Cloth and belt washing pump suction Cloth and Belt Wash Pump Quantity 2, 1 per filter train Flow Rate 222.3 gpm Head 65.6 psig Brake Horsepower 16.6 hp (26.5 hp max) Manufacturer & Model Finder Pompe, AC 80 – 160 Type Centrifugal Casing Cast Iron Shaft Carbon Steel Impeller Cast Iron Liner None Shaft Seal Mechanical Drive Direct Pump Speed 3540 rpm Motor Speed 3600 rpm Motor hp 30 hp

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2605.201.3.2.9 C loth/B elt Was h Tanks & P umps (DG -P U-5806 & DG -P U-5816)

Wash Tank Illustration

Illustrative Models of Pumps

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2605.201.3.2.10 C loth Was h R ec overy T ank Agitator (DG -AG -5807 & DG -AG -5817)

Function The agitator keeps gypsum in suspension in the dewatering system cloth wash water recovery tank.

Description

The agitator is a mixer manufactured by Lightnin. There is one agitator per tank per Dewatering System. The agitator (DG-AG-5807) for Dewatering System A has a ¾ hp motor designed for 1800 rpm. The agitator (DG-AG-5817) for Dewatering System B has a ¾ hp motor designed for 1,800 rpm.

Illustration of modular design agitator for sumps and small tanks (Lightnin)

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2605.201.3.2.11 R ec overy T anks & R ec irc . P umps (DG -T K -5807/17 & DG -P U-5809/19)

Function The gypsum recovered from the vacuum belt filter wash process is pumped by the recirculation pump onto the belt filter and dewatered.

Description The cloth and belt wash water is collected in a small storage tank with an agitator and a pump. Makeup water is supplied to the tank and controlled by a float valve. The agitator keeps the gypsum in suspension. The liquid is pumped by the recirculation pump to the belt filter and fed onto the gypsum cake. Cloth Wash Water Recovery Tank

Quantity 2, 1 per filter train Dimensions, H x D 4’–7” x 5’–3” Total Capacity 690 gallons Construction HDPE Operating Pressure Atmosphere Inputs Belt and cloth wash water collection Outputs Recirculation pump suction Agitator Manufacturer & Model Lightnin Motor Speed 1800 rpm Motor hp ¾ hp Recirculating Pump Quantity 2, 1 per filter train Flow Rate 252.7 gpm Head 24.6 psig Horsepower 10.0 hp Brake Horsepower 6.7 hp Manufacturer & Model Schabaver, C100 Liner Type Natural rubber Shatt Seal Mechanical seal Drive V-Belt Speed 890 rpm Motor Speed 1800 rpm

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2605.201.3.2.11 R ec overy T anks & R ec irc . P umps (DG -T K -5807/17 & DG -P U-5809/19)

Model C100 Recirculation pump (Schabaver)

Gypsum Dewatering System BWN-1, 2, 3, & 4-02605.201 Rev A Process Description Bowen FGD Scrubber Units 1 - 4


2605.201.3.2.12 F iltrate P umps (DG -P U-5805A/B & DG -P U-5815A/B )

Function The filtrate pump pumps return water to the return water tanks. The filtrate pump also pumps excess water from the gypsum wash water distribution pumps to the return water tanks.

Description

The filtrate system for each filter train consists of two filtrate receivers and two filtrate pumps. The filtrate receivers connect the vacuum pump to the belt filter and collect the filtrate from the belt filter. The No. 1 filtrate receiver primarily collects moisture from the leading portion of the belt filter. The No. 2 filtrate receiver collects moist air from the end portion of the belt filter. This second receiver is designed to separate the moisture from the air with a tangential inlet. The two receivers are interconnected and are designed with the bottoms sloped toward the filtrate pumps which are located on the No. 1 filtrate receiver. The collected filtrate is then pumped to the return water system by the filtrate pumps.

Filtrate Pump Quantity 4, 2 per filter train Flow Rate 660 gpm Head 65 ft discharge pressure Manufacturer & Model Krogh Pump 4 x 9, 55-OH Motor Speed 1800 rpm Motor hp 30 hp

Gypsum Dewatering System BWN-1, 2, 3, & 4-02605.201 Rev 0 Process Description Bowen FGD Scrubber Units 1 - 4


2605.201.3.2.12 F iltrate P umps (DG -P U-5805A/B & DG -P U-5815A/B )

Filtrate Pump (Krogh)



2605.201.3.2.13 Dewatering S ys tem A & B Nos . 1 & 2 F iltrate R eceiver

(DG -T K -5805A & B /5815A & B )

Function The filtrate tanks contain the filtrate water recovered from the vacuum belt filter wash.

Description

The filtrate system for each filter train consists of two filtrate receivers and two filtrate pumps. The filtrate receivers connect the vacuum pump to the belt filter and collect the filtrate from the belt filter. The No. 1 filtrate receiver primarily collects moisture from the leading portion of the belt filter. The No. 2 filtrate receiver collects moist air from the end portion of the belt filter. This second receiver is designed to separate the moisture from the air with a tangential inlet. The two receivers are interconnected and are designed with the bottoms sloped toward the filtrate pumps which are located on the No. 1 filtrate receiver. The collected filtrate is then pumped to the return water system by the filtrate pumps.

Filtrate Receiver Quantity 4, 2 per filter train Dimensions, H x D 12’ x 9’-10” Total Capacity 2,959 gallons Construction Rubber Lined Carbon Steel Operating Pressure 7.35 psia Inputs Belt filter discharge Outputs Filtrate pump suction & vacuum pump suction



2605.201.3.2.13 Dewatering S ys tem A & B Nos . 1 & 2 F iltrate R eceiver

(DG -T K -5805A & B /5815A & B )

Filtrate Receiver



2605.201.3.2.14 Was h Water Dis tribution P umps (DG -P U-5802A/B /C )

Function The wash water distribution pumps provide the motive force to supply makeup water needs for the dewatering facility.

Description

Wash water pumps are horizontal centrifugal ductile iron pumps manufactured by Gould. The pumps have a flow rate of 180 gpm, a head of 143 ft. with a brake horsepower of 11.3 hp (13.5hp @ run out). With a SAE 4140 shaft and a 316 Stainless Steel Impeller, the pump is a direct drive with a pump speed of 3560 rpm. It operates by a 15 hp motor with a 3600 rpm speed.

Wash Water Pump Model 3196 MTX (Gould)



2605.201.3.2.15 Was h Water Automatic B ackwas h S trainers (DG -S N-5800A/B )

Function

The automatic backwash strainer filters the water provided to the dewatering facility to a level acceptable for the operation of the dewatering equipment.

Description

The automatic backwash strainer consists of a housing, filter media, internal backwash assembly, motor, and backwash valve. The automatic backwash strainer filters the water provided to the dewatering facility to a level acceptable for the operation of the dewatering equipment. The backwash process will occur when the differential pressure across the filter element reaches 10 psid or at a timed interval of 3 hours. The backwash valve opens and the motor turns the backwash assembly inside the housing. The backwash assembly allows reversed flow through the filter element. This dislodges debris from the filter media and directs the flow and debris to the drain.

The automatic backwash strainers are 6” VWS-6-NS, Poro-Edge Water Strainer, supplied by R. P. Adams. Each pump has a maximum 650 gpm capacity and mesh a size of 100 (0.0006”) and is driven by a ½ hp motor. The two strainers each work at 100% capacity.



2605.201.3.2.16 F lop G ates F G 1 & F G 2 (G X-F G -5841/5842)

Function The Flop Gates determine which conveyor, BCG1A or BCG1B, is primary in the stacking of gypsum in gypsum storage. Description

Flop gates are single blade diverter gates custom manufactured locally. The dewatered gypsum is discharged from the end of the filter belt into the pant leg chute with the motor operated flop gate.

Illustrative example of a flopgate



2605.201.3.2.17 30” B elt C onveyor B C G 1A & B (G X-C N-5843/5844)

Function

The belt conveyor elevates and transports gypsum discharged from the vacuum belt filter to conveyor belts BCG2A and B respectively in the gypsum storage area.

Description

The motor operated flop gate at the end of the dewatering filter discharges gypsum unto one of the two conveyors, BCG1A or BCG1B. These conveyors transport the gypsum from the dewatering building to the storage barn. These conveyors discharge the gypsum to the corresponding conveyor, BCG2A or BCG2B, which runs along the storage barn.

Conveyor BCG1A & B Belt Width, in. 30 Belt Speed, fpm 328 Capacity, tph 300 Mat’l Density, lb/ft³ 70 Trough Angle 35º Surcharge Angle 20% Belt Sag, % 2% Max Belt Incline 15º Est. Power, hp 50




30” industrial conveyor system (by FEECO)




Function The conveyors move gypsum to the 30” tripper.

Description

Manufactured by FEECO, BCG2A/B is a 30” belt driven by an estimated 50 HP motor with 300 tph design capacity and a belt speed of 318 fpm. The conveyor had a trough angle of 35o, a surcharge 20% angle. The maximum belt incline for BCG2A should not exceed 0o. The Tripper drive Gear Motor is 1½ HP Falk 7 rpm output.

Conveyor BCG2A & B Belt Width, in. 30 Belt Speed, fpm 318 Capacity, tph 300 Mat’l Density, lb/ft³ 70 Trough Angle 35º Surcharge Angle 20% Belt Sag, % 2% Max Belt Incline 0º Est. Power, hp 30




Illustrative Examples of Belt Conveyors



2605.201.3.2.19 T ripper T R P 1 & T R P 2 (G X-E Q-5849/5850)

Function

The wide tripper travels along a belt conveyor and discharges gypsum along the 463’ path of the conveyor. The tripper diverts gypsum from BCG2A & B to gypsum storage.

Description

Each conveyor has a tripper, TRP1 and TRP2, to unload the gypsum from the conveyor. The tripper is indexed along the conveyor to distribute the gypsum on the floor of the storage barn. The trippers form a linear pile that is 32’ high and has a ridge length of 463’. The trippers on BCG2A and BCG2B come equipped with dual reversing drive motors, a motor driven cable reel and conveyor end-of-travel switches. The tripper diverts the gypsum from the belt to a chute then to the floor of the storage barn. Each tripper is start/stop remotely from the DCS and is indexed along the length of the storage barn via programming in the DCS. BCG2A is a 30” belt driven by an estimated 50 hp motor with 300 tph design capacity. The conveyor had a trough angle of 35o, a surcharge 20% angle. The Tripper Drive Gear Motor is 1½ hp, Falk 7 rpm output.

Conveyors Belt Tripper (FEECO)



2605.201.3.2.20 990H L oader

Function

The 990H Loader moves gypsum from storage to the load out hopper.

Description

Rated payload in the standard lift arrangement is 16.5 tons and operating weight is 171,642 pounds. Bucket capacities range from 11.0 to 12.0 cubic yards. The Cat C27 engine, rated at 627 net horsepower, features a V12 engine with a displacement of 1,648 cubic inches and a mechanically actuated, electronically controlled fuel injection system, delivering micro-bursts of fuel just prior to and after the main injection for reduced emissions.

The 990H also features an air-to-air aftercooling (ATAAC) system to reduce the temperature of air feeding the engine intake. The cooled, compressed air reduces engine emissions in high ambient temperatures. The 990H power train also features an impeller clutch torque converter (ICTC). The system allows the operator to modulate rimpull efficiently using the left pedal for smooth loading cycles. In addition, the Rimpull Control System allows the operator to vary rimpull to match underfoot conditions by selecting one of four preset, reduced rimpull settings. The system optimizes productivity while reducing tire slippage, tire wear and costs.

The next generation modular radiator (NGMR) is a Caterpillar technology that improves serviceability and increases cooling efficiency by 22 percent by routing coolant through the radiator twice for better cooling. Also, a single module can be removed without removing the entire radiator, resulting in reduced downtime and lower repair costs.

The cooling system design isolates the NGMR and the hydraulically driven, variable-speed cooling fan from the engine compartment, allowing the radiator to receive ambient air from outside rather than heated air from the engine compartment. The design increases heat exchange while minimizing the size of the radiator. The radiator size allows the hood to be sloped for enhanced sight lines to the rear of the loader. Also, the efficient radiator allows the fan to run at lower speeds, reducing sound levels, power demand and fuel consumption.

The cab is spacious and provides superior visibility to the work area. Interior sound levels are below 75 dB(A). The Comfort Series seat has an air suspension and is adjustable to fit the operator. A trainer seat promotes proper operational and safety training.

The 990H retains the Steering and Transmission Integrated Control (STIC) system that enables the operator to use small movements of a single hand to steer and to make direction and gear changes. STIC enables smooth operation with minimum effort.

The Electronic Monitoring System III (EMS III) continually monitors machine systems and provides a three-level warning system to alert the operator of problems. EMS III stores and shares information with machine systems so that it can be used by a technician to simplify diagnostics and service.



2605.201.3.2.20 990H L oader

Brief Specifications – Cat 990H Wheel Loader

Engine model Cat C27 ACERT Gross power 687 hp (512 kW) Net power (Caterpillar) 627 hp (468 kW) Rated payload 16.5 tons (15 tonnes) Bucket capacities 11.0-12.0 cu yd

(8.4-9.2 cu meters) Dump clearance at 45 degree dump, Standard linkage

13 ft 9 in. (4135 mm)

Reach at max. lift/dump, std. linkage 5 ft 11 in. (1799 mm) Dump clearance at 45 degree dump, High lift

14 ft 10 in. (4518 mm)

Reach at max. lift/dump, high lift 8 ft 4 in. (2540 mm) Tipping load (std.) - Straight - Full turn, 35 degrees

93,457 (43 392) 84,311 (38 243)

Breakout force* Standard High lift

133,650 lb (594 kN) 126,225 lb (561 kN)

Overall length (std.) 42 ft 2 in. (12 839 mm) Turning circle (std.) 68 ft 2 in. (20 740 mm) Operating weight (std.) 171,642 lb (77 842 mm)



2605.201.3.2.20 990H L oader



2605.201.3.2.21 L oadout Hopper L H1 & L H2 (G X-HP -5853/5856)

Function

The load out hopper channels gypsum from the front end loader to the belt feeder for conveyor belt BCG3.

Description

The gypsum loadout hopper has a 14’-7” bucket riding on a 16’-2” x 9’-6”x 16’-6” steel frame along rail tracks. Each loadout hopper comes equipped with a loadout screw feeder, feeder drive motor, a motor driven cable reel, and a start horn. The hoppers are mounted on rails and are repositioned along the length of the storage barn by the wheel drive motors. Each hopper’s loadout screw feeder is started and stopped remotely by the DCS.

Twin-end discharge screws on each hopper are powered by two model RGZESD Siemens manufactured 460 TEFC 60HP/1200RPM Motors (404T Frame). Each motor is attached to a Falk M1180 Reducer (DHC3/80:1 Ratio) and a FALK gear coupling 1050G20 5.905/5.312.

Load Out Hoppers



2605.201.3.2.22 48” B elt C onveyor B C G 3 (G X-C N-5851)

Function

The belt conveyor moves gypsum to conveyor BCG3.

Description

From the storage barn, the gypsum is loaded by the front end loader onto conveyor BCG3 via one of two loadout hoppers. Each hopper holds 27.9 cubic yards of material. Each conveyor comes equipped with a drive motor with a magnetic coupling, a plugged chute detector, a start horn, a zero speed switch and a belt over travel switch. Multiple belt alignment and safety pull cord switches are located on both sides of the conveyors. Each conveyor is started and stopped remotely from the DCS. The gypsum is then transported onto a second conveyor, BCG3, which leads to the railcar loader. Along BCG3, the gypsum is sampled and weighed. BCG3 discharges into a surge bin at the railcar loading system. Reducer - Dodge Maxum TRC9 38.44:1 HS Coupling – Magnetic coupling, Magna Drive 16.5S FGC LS Coupling - Dodge, Lovejoy 1130T10 Conveyor BCG3 Belt Width, in. 48 Belt Speed, fpm 369 Capacity, tph 1000 Mat’l Density, lb/ft³ 70 Trough Angle 35º Surcharge Angle 20% Belt Sag, % 2% Max Belt Incline 7º Est. Power, hp 75




Function

The belt conveyor moves gypsum to the surge bin at the railcar loading system.

Description

The gypsum is transported from conveyor BCG3 to conveyor BCG4, which leads to the railcar loader. Along the BCG4, the gypsum is sampled and weighed. BCG4 discharges into a surge bin at the railcar loading system. Each conveyor comes equipped with a drive motor with a magnetic coupling, a plugged chute detector, a start horn, a zero speed switch and a belt over travel switch. Multiple belt alignment and safety pull cord switches are located on both sides of the conveyors. Each conveyor is started and stopped remotely from the DCS. Manufactured by FEECO, the 48” belt-conveyor has a design capacity of 1000 TPH and a belt speed of 369 FPM. Drive components include a 125 HP motor/1750 RPM/460/3/60TEFC, premium efficient with 110v space heater. Reducer - Dodge Maxum TRC9 38.44:1 HS Coupling – Magnetic coupling, Magna Drive 18.5S FGC LS Coupling - Dodge, Lovejoy 1150T10 Conveyor BCG4 Belt Width, in. 48 Belt Speed, fpm 369 Capacity, tph 1000 Mat’l Density, lb/ft³ 70 Trough Angle 35º Surcharge Angle 20% Belt Sag, % 2% Max Belt Incline 11.25º Est. Power, hp 125



2605.201.3.2.24 P rimary S wing Arm S ampling S ys tem (G X-C N-5861A)

Function

The primary swing arm sample system samples gypsum for quality.

Description

The sample system is located on conveyor BCG4. The sample system consists of a 14 inch wide conveyor with variable speed drive and two swing arm sample systems. The primary swing arm sampler has a 6 inch cutter that rotates across the conveyor belt and deposits the sample into a chute to the sample conveyor. The secondary sampler has a 2 inch cutter that removes a portion of the gypsum from the sample conveyor and discharges it into a manually located container. The sample conveyor returns the unused portion of gypsum to conveyor BCG4. The sample system comes equipped with a local control unit to coordinate the conveyor speed and primary / secondary sampler operation. This unit is adjusted locally; however, it can be started and stopped by the operator via the DCS for sample gathering. The weigh belt consists of weighting section, load cells, speed sensor and local control unit. The weigh belt measures the total mass of material loaded into the rail cars. The local control unit is started and stopped locally and transmits a weight signal to the DCS for record purposes. This sampling system is model SWS-C-48-6 manufactured by James A. Redding Co. The primary swing arm sampler has a 6 inch cutter that rotates across the conveyor belt and deposits the sample into a chute to the sample conveyor.



2605.201.3.2.24 P rimary S wing Arm S ampling S ys tem (G X-C N-5861A)

Swing Arm Type Sampling System

(By James A. Redding Co. - Automated Sampling Specialists)



2605.201.3.2.25 S ec ondary S wing Arm S ampling S ys tem (G X-C N-5861B )

Function

The secondary swing arm sampler samples the sample captured by the primary swing arm sampler.

Description

The sample system is located on conveyor BCG4. The sample system consists of a 14 inch wide conveyor with variable speed drives and two swing arm sample systems. The primary swing arm sampler has a 6 inch cutter that rotates across the conveyor belt and deposits the sample into a chute to the sample conveyor. The secondary sampler has a 2 inch cutter that removes a portion of the gypsum from the sample conveyor and discharges it into a manually located container. The sample conveyor returns the unused portion of gypsum to conveyor BCG4. The sample system comes equipped with a local control unit to coordinate the conveyor speed and primary / secondary sampler operation. This unit is adjusted locally; however, it can be started and stopped by the operator via the DCS for sample gathering. The weigh belt consists of weighting section, load cells, speed sensor and local control unit. The weigh belt measures the total mass of material loaded into the rail cars. The local control unit is started and stopped locally and transmits a weight signal to the DCS for record purposes. This sampling system is model SWS-C-48-6 manufactured by James A. Redding Co. The secondary sampler has a 2 inch cutter that removes a portion of the gypsum from the sample conveyor and discharges it into a manually located container. The sample conveyor returns the unused portion of gypsum to conveyor BCG4.



2605.201.3.2.25 S ec ondary S wing Arm S ampling S ys tem (G X-C N-5861B )

Swing Arm Type Sampling System (By James A. Redding Co. - Automated Sampling Specialists)



2605.201.3.2.26 S ampling S ys tem C rus her

Function

The primary swing sampler extracts a sample increment from the customer's moving belt. The sample increment is then metered and conveyed to the sample crusher where it is reduced to the desired particle size. Description



2605.201.3.2.27 S wing Arm S ampler R ejec ts C onveyor S ys tem (G X-C N-5861C )

Function The sample conveyor returns the unused portion of gypsum to conveyor BCG4. Description

The sample system comes equipped with a local control unit to coordinate the conveyor speed and primary / secondary sampler operation. This unit is adjusted locally; however, it can be started and stopped by the operator via the DCS for sample gathering.



2605.201.3.2.28 B elt S c ale S ys tem (G X-S A-5862)

Function

The weigh belt weighs gypsum on conveyor BCG4.

Description

The weigh belt consists of a weighting section, load cells, speed sensor and a local control unit. The weigh belt measures the total mass of material loaded into the rail cars. The local control unit is started and stopped locally and transmits a weight signal to the DCS for record purposes.

Weigh belts are manufactured by Thayer, Model NAR-6-48.

The scale idlers are manufactured by Stephens-Adamson and are model C4206-48 with a 6” roll diameter for 48” belt size and a weight of 98Lbs.



2605.201.3.2.29 S urge B in (G X-B N-5866)

Function

The gypsum receives the discharged gypsum from BCG4. The surge bin stores gypsum prior to railcar loading. The surge bin discharges into the train loading pant leg chute.

Description

The surge bin holds 103.7 cubic yards. It is designed to hold the volume of gypsum on the upstream conveyors.



2605.201.3.2.30 S hut Off G ate (DG -XV-5866C )

Function

The shut-off gate controls the flow of gypsum out of the surge bin.

Description

The dewatered gypsum railcar loading system consists of a surge bin, shutoff gate, and pant leg chute. The surge bin receives the discharged gypsum from BCG4. The surge bin holds 103.7 cubic yards. It is designed to hold the volume of gypsum on the upstream conveyors. It contains a plugged chute detector and a hydraulically powered shut-off gate at the bottom. The surge bin discharges into the train loading pant leg chute. The train loading pant leg chute has a traversing cylinder to allow the chute to be moved away from the rail cars. It also has a flop gate, controlled from the rail loadout control room, to properly load the rail cars. The traversing cylinder and flop gate are hydraulic piston operated. A hydraulic power unit is located in the rail loadout area.



2605.201.3.2.31 R etrac table P ant L eg C hute (G X-F G -5865)

Function

The Retractable Pant Leg Chute distributes gypsum evenly in the railcar.

Description The railcar loading system consists of a surge bin, shutoff gate, and pant leg chute. The surge bin receives the discharged gypsum from BCG4. The surge bin holds 103.7 cubic yards. It is designed to hold the volume of gypsum on the upstream conveyors. It contains a plugged chute detector and a hydraulically powered shut-off gate at the bottom. The surge bin discharges into the train loading pant leg chute. The train loading pant leg chute has a traversing cylinder to allow the chute to be moved away from the rail cars. It also has a flop gate, controlled from the rail loadout control room, to properly load the rail cars. The traversing cylinder and flop gate are hydraulic piston operated. A hydraulic power unit is located in the rail loadout area.



2605.201.3.2.32 F lop G ate F G 3 (G X-F G -5865)

Function

The flop gate determines which side of the railcar is loaded with gypsum.

Description

The railcar loading system consists of a surge bin, shutoff gate, and pant leg chute. The surge bin receives the discharged gypsum from BCG4. The surge bin holds 103.7 cubic yards. It is designed to hold the volume of gypsum on the upstream conveyors. It contains a plugged chute detector and a hydraulically powered shut-off gate at the bottom. The surge bin discharges into the train loading pant leg chute. The train loading pant leg chute has a traversing cylinder to allow the chute to be moved away from the rail cars. It also has a flop gate, controlled from the rail loadout control room, to properly load the rail cars. The traversing cylinder and flop gate are hydraulic piston operated. A hydraulic power unit is located in the rail loadout area.



2605.201.3.2.33 P ant L eg C hute & F lop G ate HP U P ower P ac k

Function

The Pant Leg Chute & Flop Gate HPU Power Pack provides the hydraulic forces required to position and operate the Pant Leg Chute and Flop Gate.

Description

The power Pack is rated at 25 hp at 1800 rpm. The railcar loading system consists of a surge bin, shutoff gate, and pant leg chute. The surge bin receives the discharged gypsum from BCG4. The surge bin holds 103.7 cubic yards. It is designed to hold the volume of gypsum on the upstream conveyors. It contains a plugged chute detector and a hydraulically powered shut-off gate at the bottom. The surge bin discharges into the train loading pant leg chute. The train loading pant leg chute has a traversing cylinder to allow the chute to be moved away from the rail cars. It also has a flop gate, controlled from the rail loadout control room, to properly load the rail cars. The traversing cylinder and flop gate are hydraulic piston operated. A hydraulic power unit is located in the rail loadout area. Photo eyes will be installed at the train rails to alert the train room operator to train spacing.



2605.201.3.2.34 G yps um R ail C ar & Truc k S c ale

Function

The Gypsum Rail Car & Truck Scale determines net, tare and gross weight of the railcar and gypsum. Description



2605.201.3.2.35 C ontrol Air C ompres s or S ys tem (DG -C O-5820A/B )

Function

The Control Air Compressor System supplies compressed air to all components requiring pneumatics in the Gypsum Dewatering System.

Description

Each Air compressor is manufactured by Ingersoll Rand – Model H60 and rated for 125 psig. Compressors are Oil free/rotary screw type and have a flow rate of 200 scfm and an outlet size 1.5”NPT.



2605.201.3.2.36 C ontrol Air P re-F ilter (DG -F L -5820A/B /C /D/G /H/J /K )

Function

The Control Air Pre-Filter removes airborne contamination in the gypsum dewatering compressed air system.

Description

Manufactured by Ingersoll Rand with a maximum working pressure 16 bar g (232 psi g).

Illustrative examples of Pre-filters (Ingersoll Rand)



2605.201.3.2.37 C ontrol Air Dryers (DG -DY -5820A & B )

Function

The Instrument Air Dryer removes moisture from the instrument air to provide high-quality, low-moisture air to protect components that use instrument air from damage.

Description

Both air dryers have a 400 gallon air receiver volume capacity and are manufactured by Ingersoll Rand. Air dryers are Model EH300 and have a 3Kw heater rating, along with pre-filters (2, GP and 2, HE per dryer) and after-filter (2, DP per dryer).



2605.201.3.2.38 C ontrol Air After-F ilter (DG -F L -5820E /F /L /M)

Function

The Control Air After-Filter filters remove airborne contamination in the gypsum dewatering compressed air system.

Description

The compressed air system provides dry compressed air to the dewatering facility. It has two trains consisting of a compressor, prefilters, air dryer and after-filters. Both trains connect to a common air receiver. The air compressors are stand-alone systems complete with controls and starters. The compressors are sized to meet the needs of control valves and service air users.



2605.201.3.2.39 C ontrol Air R ec eiver T ank (DG -R V -5820/5810/5811)

Function

The Control Air Receiver Tanks draw compressed air from the after filters and supplies air to the dewatering system and other service air users.

Description

Tank No.1 (DG-RV-5820) is a 400 gallon tank made of carbon steel. Tank No. 2 and No.3 (DG-RV-5810/5811) are 200 gallon tanks made of carbon steel.



2605.201.3.2.40 Bridge Crane (DG-HO-5822)

Function The bridge crane will be used for maintenance on the filter. Description

The bridge crane is a 10 Ton, 102’ span and a 175’ runway. The hoist lift has a range from 0”-66’ and a wheel base of 15’-0”. The 20,000 Lb capacity bridge crane is manufactured by OMI, and the hoist are run by a 1800 rpm and 2 HP motor and a 1.5 HP trolley. Respectively, the bridge, Trolley and Hoist speeds are 10/20 FPM 2 SPD, 80/20 FPM 2 SPD and 30/10 FPM 2 SPD. The bridge crane is operated by radio controlled remote with a pendant backup. The crane is a double girder, top running trolley, Class C crane. It has a four bar conductor runway electrification system. Five 400W lights are suspended from the girder. A full length walkway is provided on one girder with a 15 ft section on the second girder with a crossover platform. The hoist is a “DETROIT” F20T66-30M10D. Power supply voltage is 460V, 3 HP and 60 Hz. The total weight of the bridge crane is 61, 5060 Lbs (56,930 Lbs, Bridge Lbs Hoist/Trolley).



2605.201.3.3 S ummarized C ontrols Des c ription

Gypsum slurry is transferred to the dewatering system in three lines. The first line is from the Unit 1 and 2 gypsum transfer pumps. The second line is from the Unit 3 and 4 gypsum transfer pumps. The third line is a common spare for the two main lines. The three lines are collected in a header in the dewatering building.

The dewatering system consists of Gypsum Hydrocyclones for primary dewatering, and the two Gypsum Belt Filter systems for secondary dewatering. Primary hydrocyclones dewater the slurry to 50% solids. The underflow is fed directly to the vacuum belt filter. The overflow is directed to the gypsum dewatering area sump.

Hydrocyclone

The dewatering hydrocyclone (cyclone) dewaters the gypsum slurry from 20% solids to 50% solids. The dewatering hydrocyclone consists of a distributor, 14 hydrocyclones, underflow tank, and overflow tank. Three of the hydrocyclones are spare. Individual hydrocyclones are separated from the distributor by manual valves. The slurry enters the hydrocyclone tangentially and relies on centrifugal force to keep heavy particles near the wall while fine particles and water stay to the center. The heavy particles travel to the bottom of the hydrocyclone and flow out of the top into the overflow tank. This liquid is discharged into the dewatering building trench which leads to the dewatering area sump.

Gypsum Vacuum Belt Filter

The Gypsum Vacuum Belt Filters (DG-FL-5804/5814) remove water from gypsum. The belt filter consists of a cloth belt, a rubber belt, a drive roll, a vacuum box and vacuum header. The cloth belt acts as the filtering media. It runs on rollers and the rubber belt and is tensioned and aligned by the pneumatic system. The rubber belt supports the cloth belt while the gypsum is on the cloth. The belt is driven by a 100 hp motor with a variable speed drive. This belt has curbs on the side and channels on the bottom that lead to perforations in the center. The curbs contain the slurry while the channels direct water and air from the gypsum to the holes in the center of the belt. The vacuum box is located under the holes in the belt and is used to seal the vacuum system and belt. The vacuum box has wear belts, which are lubricated with water, on which the rubber belt slides. The vacuum belt can be tilted via the pneumatic system for easy maintenance. The vacuum box is connected to the vacuum header at 29 points along the filter. The vacuum header directs the liquid and air to the filtrate receivers through two 30 inch connections. The dewatered gypsum is discharged from the end of the belt into a pant leg chute with a motor operated flop gate



2605.201.3.3 S ummarized C ontrols Des c ription

Gypsum Handling/Loading System

Once the gypsum leaves the dewatering system, it is directed onto one of two conveyors via a manually operated flop gate. These conveyors transport the gypsum to the storage barn. The conveyor discharges the gypsum to a conveyor that runs along the storage barn where it is unloaded via tripper. The tripper is indexed along the conveyor to distribute the gypsum inside the storage barn. From the storage barn, the gypsum is loaded by front end loader onto a conveyor via load out hopper. The gypsum is then transported onto a second conveyor. The gypsum is then loaded into the surge bin for the rail loader.

The conveyor system is controlled in two parts, the dewatering system load out and the rail car load out. The dewatering system conveyors are controlled from the dewatering system. An automatic start sequence will start the selected conveyors, then the dewatering system, and auxiliary equipment. The rail car load out conveyors are controlled from the rail load out control room. An automatic start sequence will start the conveyors. The load out hopper and sampler are started remotely. The weigh belt is controlled locally.

When a train arrives at the rail load out tower, the operator starts the loading sequence. The train is properly located via radio communication between the operator and the train engineer. The pant leg chute is moved from its rest position to the parked position and the flop gate properly positioned. The surge bin cut-off gate is opened and gypsum loading commences. The rail load out tower operator is responsible for starting the conveyor loading system via a remote DCS operator terminal. The operator observes the car loading and communicates with the train engineer to control the train speed. The flop gate is used to switch from one car to another. When the cars are loaded, the surge bin cut-off gate is closed, the conveyors are stopped and the pant leg chute is moved to the rest position.



2605.201.3.4 Detailed C ontrols Des c ription

The Gypsum Dewatering System is operated and monitored through the DCS. Gypsum reclaim and railcar loading are initiated and supervised by the operator. Control work stations are located in the dewatering building and the railcar loadout control room. Each control area can control the entire process although it is expected that the Dewatering and storing will be controlled from the dewatering building and the load out will be controlled from the railcar load out control room.

Belt Filter Operating Mode Descriptions

The belt filter is capable of operating in three modes; Automatic Mode, Manual Mode, and Cloth Changing Mode.

Automatic Mode

In the Automatic Mode, the filter and its associated equipment are started automatically by the control system DCS according to a sequential logic cycle. All safety interlocks and process interlocks must be operational and the cycle will halt if an interlock is lost. In order to be in Automatic Mode, the Local/Remote DCS switch must be in Remote. Belt filter speed is controlled by the filter cake thickness controller. Placing the Local/Remote switch to Local will change the mode to Manual Mode.

Manual Mode

The Manual mode allows the operator to control locally and individually each piece of equipment (Start/Stop pumps, Open/Close automatic valves…). In Manual Mode, two control selections are available: Local control and Remote control. In Local control, the starting and stopping of the belt filter drive is done with Start and Stop push buttons located on the local control panel at the belt filter. The control of the belt filter speed is done with the Faster and Slower push buttons located on the local control panel at the belt filter. Local control allows the operator to adjust the cake thickness on the filter by visual inspection in respect to the slurry feed flow. In Manual/Local, automatic filter speed/cake thickness control is not operational. Personal safety interlocks and machine safety interlocks concerning the equipment control must be operational.

Remote control allows the operator to start and stop the belt filter from the control room. Belt filter speed is controlled by the cake thickness controller. If manual speed control is desired, the cake thickness controller may be placed in manual and its output set.




Cloth Changing Mode

The Cloth Changing mode allows the operator to locally start the belt filter at low speed for cloth changing operation. To use the cloth changing mode, the system must be in Manual Mode, Local control. The operator must use the hand selector switch Normal/Cloth Change located inside the local control panel at the belt filter.

When Cloth Changing Mode is selected, the operator is able to Start/Stop the belt filter drive and to adjust the speed using the Start, Stop, Faster, Slower push buttons located inside the local control panel at the belt filter. In Cloth Changing Mode, only machine safety interlocks and some process interlocks concerning the belt filter drive are operational (for example, the cloth misalignment sensors are bypassed). The cloth changing mode will inhibit automatic startup and shutdown sequences.

The following interlocks are bypassed in the Cloth Changing Mode:

• Belt filter cloth tension

• Belt filter cloth misalignment

• Belt filter low instrument air pressure

• Cloth wash water low pressure

• Cloth wash water low flow

• Wear belt lube water low flow

• Support rail lube water low flow

• Cloth overspeed

• Cake discharge plugged

Cloth Changing Mode prevents the following equipment operating:

• Filtrate Pumps

• Cloth Washing Pump

• Vacuum Pump

• Recirculating Pump




It is possible to change operating mode while the equipment is operating. If there is a desire to use the Faster and Slower speed buttons on the local control panel, operation may be changed from Automatic/Remote to Manual/Local.




Belt Filter Automatic Startup/Shutdown Mode Descriptions

The gypsum dewatering system has four automatic startup/shutdown modes. Each mode determines which belt filter system and which conveyor will be started or stopped. The modes are defines as shown below.

MODE 1 2 3 4

FILTER SYSTEM

A A B B

CONVEYOR SYSTEM

A B B A

Once a startup or shutdown sequence is completed, the mode may be changed. The sequences normally run as follows:

Startup Sequence • The desired mode is selected • Mode Start button operated • Discharge conveyor 2 starts • Discharge conveyor 1 starts • The belt filter to conveyor flop gate moves to the appropriate position • The appropriate wash water pump starts • The filtrate pump starts • The belt and cloth washing pump starts • The belt filter drive is started • The vacuum pump seal water valve opens • The vacuum pump starts • The recirculating pump starts • The slurry feed valve opens • The Slurry Transfer Pump starts • The startup sequence is complete




During the startup sequence the control system verifies the current step has been completed, prior to moving to the next step in the sequence. This is generally a motor running feedback. Before the wash water pump starts, the flop gate must be in the correct position and at least one strainer in service (auto flush cycle on). Before the filtrate pump starts, the appropriate wash water pumps must be running and the belt filter interlocks (Personal Safety, Machine Safety, Process) must be satisfied. Before the belt filter drive starts, the belt and cloth washing pump must be running and the belt filter process flow interlocks satisfied. Before the vacuum pump starts, seal water flow must be verified. If verification is not received within a timed period, a sequence stalled alarm is initiated and the cycle halts until verification is received. The DCS Sequence Halt button will stop the sequence at the current step. In order to restart the sequence, the Mode Start button must be operated. Once the dewatering system has completed its startup sequence, the vacuum belt filters are ready to receive slurry. The isolation valve supplying the appropriate hydrocyclone will be open. The Gypsum Slurry Transfer Pump start up sequence shall begin at this point. The Gypsum Slurry Transfer system is equipped with controls for the generation of alarms as well as for equipment protection. The Gypsum Transfer Tank is equipped with a High and Low Level alarm at 65.5 ft and 23 ft respectively. Additionally, the Gypsum Transfer Tank Level indication is used to interlock the Gypsum Transfer Pumps and Gypsum Transfer Tank Mixer. At a level of 22 ft, the Gypsum Transfer Pumps, if already running, will remain running. Otherwise, the pumps will be prevented from starting until the tank level rises above 22 ft. At a level of 21 ft, the Gypsum Transfer Tank Mixer, if already running, will remain running. Otherwise, the Gypsum Transfer Tank Mixer will be prevented from starting until the tank level rises above 21 ft. Additionally, at the level of 21 ft, the running Gypsum Transfer Pumps will be tripped offline. At a tank level of 20 ft, the Gypsum Transfer Tank Mixer will be tripped offline. In addition to level interlocks, the Gypsum Transfer Tank Mixer logic will generate an alarm if the mixer is not running within 10 minutes after the Gypsum Transfer Tank Level rises to greater than low-low level setpoint (21 ft). Additionally, in order to start the mixer, the mixer lube oil flow must be greater than the low flow setpoint. Should the lube oil flow drop below the minimum setpoint while the mixer is already operating, the mixer will be tripped offline and a lube oil low flow alarm will be generated. The control logic also provides for Gypsum Transfer Pump Pre and Post flush sequences as well as allotments for flushing the transfer header (as a part of the post flush logic). The Gypsum Transfer Pumps and header flush will be prevented from occurring if any other FGD line flush is already in progress. Also, if any common system (i.e. Limestone Slurry Transfer, Limestone Slurry Storage for both Units 1/2 or 3/4) are in progress or if any Unit 1/2 Gypsum Transfer Pump Flush is in progress, the post flush sequence will be delayed. Additionally, if either Unit 1/2 Gypsum Transfer Pump A or B is running, the flush sequence will be delayed (to prevent affecting Unit 1/2’s dewatering operation).




Shutdown Sequence For a normal shut down, the slurry transfer flow shall be stopped while the filters continue to run. Line flushing can begin with the fluid flowing from the gypsum transfer pump area to the dewatering area and onto the filters. Once flushing is complete, the slurry valves can be closed. The filter will then begin its shutdown sequence.

• The desired mode is selected

• Mode Shutdown button operated or system fault detected

• The Slurry Transfer Pump stops and the piping systems are flushed automatically.

• The slurry feed valve closes and the recirculating pump stops

• Filter belt continues to run for 10 minutes, with speed ramping down, emptying the filter

• The Filter Belt Drive Motor drive stops

• The recirculating pump stops

• The belt and cloth washing pump stops

• The vacuum pump stops

• The vacuum pump seal water valve closes

• The filtrate pump is stopped

• The appropriate wash water pump stops

• Discharge conveyor 1 runs, emptying, then stops

• Discharge conveyor 2 runs, emptying, then stops

• The shutdown sequence is complete

Because the shutdown sequence takes a long time, DCS indicated the sequence is in progress. During the shutdown sequence, the next step in the sequence will not begin until the control system verifies the current step has been completed. If verification is not received within a set time period, a sequence stalled alarm is initiated and the cycle halts until verification is received.




There is a DCS Sequence Halt button. Operating the Halt button will stop the sequence at the current step. In order to restart the sequence, the Mode Start button must be operated. Faults that initiate an automatic shutdown are described with the respective equipment below.

Dewatering Hydrocyclones Individual cyclones are manually valved in and out of service. The dewatering hydrocyclones are equipped with redundant pressure transmitters and a local pressure gauge on the distributor. Feedback from the transmitters controls the gypsum transfer pumps to maintain a distributor pressure of 24-36 psig.

The Gypsum Transfer Header pressure is controlled via a set of two PID control loops; one for downstream hydrocyclone pressure and one for Gypsum Transfer slurry flow. The resulting output of the PID controllers is used to generate a pump drive demand. The pump drive demand is in turn used to either drive pump A’s or pump B’s variable frequency drive (VFD) to maintain the operator selected downstream hydrocyclone pressure.

The DCS signals alarms for high and low distributor pressure.

High Distributor Pressure Alarm - TBD psig

Low Distributor Pressure Alarm - TBD psig

Belt Filter The Dewatering Belt Filter is driven by a variable speed drive. The belt filter speed is adjusted in Local or Remote mode when the automatic sequence is running, in a range of 16.4 ft/min to 98.4 ft/min. In Local mode, the speed control is made with the push buttons labeled “FASTER” and “SLOWER” located on the local control panel of the belt filter. These buttons will increase or decrease the speed set-point displayed on the DCS. In Remote mode, the speed control is made from the DCS.

The dewatering belt filter utilizes an ultrasonic level transmitter to provide cake thickness indication to the DCS. The cake thickness is controlled automatically with a level control loop which adjusts the belt filter speed set-point following the cake thickness measurement. The optimum cake thickness will be determined during the commissioning of the filter. This value will be the set point for the cake thickness control loop. To maintain the thickness set point, the belt speed will be automatically adjusted in a maximum range of ±15% of the belt filter speed set-point selected on the DCS:

• The belt filter speed is increased when thickness is above the set-point

• The belt filter speed is decreased when thickness is below the set-point




The thickness control loop will be activated when slurry is fed on the belt filter and when the belt filter speed is controlled in Remote mode. The cake discharge chute contains a plugged chute indicator. Positions switches are also provided on the flop gate. Instrument air pressure supplied to the belt filter is also measured. Instrument Air Pressure is equipped with a low pressure alarm that alarms at a pressure of less than 40 psig for 2 seconds or more.

Belt Filter Permissives:

Personnel safety interlocks active in Automatic, Manual and Cloth changing mode: • Emergency stop trip wire on the left side • Emergency stop trip wire on the right • Emergency stop on belt filter local control panel

Machine safety interlocks active in Automatic, Manual and Cloth changing mode: • Belt filter frequency drive fault • Belt filter drive unit over-torque fault • Belt filter left belt misalignment fault • Belt filter right belt misalignment fault • Left vacuum box wear belt break-down fault • Right vacuum box wear belt break-down fault

Process safety interlocks active in Automatic and Manual mode: • Belt filter compressed air supply pressure low fault • Belt filter left cloth misalignment fault • Belt filter right cloth misalignment fault • Belt filter minimum cloth tension fault • Belt filter maximum cloth tension fault • Belt filter cloth run-off fault • Belt filter vacuum box wear belts lubrication low flow fault-right side • Belt filter vacuum box wear belts lubrication low flow fault-left side • Belt support rail lube water low flow fault-right side • Belt support rail lube water low flow fault-left side • Belt filter cloth and belt wash water low pressure fault




• Belt filter cloth and belt wash water low flow fault • Cake discharge plugged fault • Cake discharge diverter right position fault • Cake discharge diverter left position fault

Process safety interlocks active in Cloth changing mode:

• Not applicable

Sequence interlocks in Automatic and Manual mode:

• Vacuum pump stopped to allow the starting of the belt filter drive

• Left cake discharge conveyor or right cake discharge conveyor in running mode to allow the starting of the belt filter drive




Filtrate Receiver and Filtrate Pump

The two filtrate receivers are connected together. Filtrate receiver level is measured in No. 1 Filtrate Receiver using a differential pressure transmitter. Level is displayed (0-100 inches) on the operator station. A high level of 60 inches will stop the vacuum pump. Filtrate receiver no. 1 also has a pressure transmitter. Receiver pressure (-14.5 to 0 psig) is displayed on the operator console.

Two filtrate pumps pump filtrate to the return water tanks. One pump is designated as lead pumps and the other pump becomes the lag pump. During automatic filter operation, if the lead pump stops as determined by loss of running feedback or low discharge pressure, the lag pump is started. If both pumps fail, an automatic shutdown sequence is initiated.

Each pump has a DCS output for pump run and a DCS input for pump running. The pump discharge header has a discharge pressure transmitter connected to the DCS. Pump discharge pressure is displayed (0-150 psig) on the operator station.

A filtrate pump is considered to be in AUTO and indicated as such on the operator station when:

• Not running manually • Not tagged out in the DCS • Not locked out in the DCS • Motor not failed • No Faults

- Seal water flow not low

- Conveyors personal safeties not faulted

- Belt filter A personal safeties not faulted

- Belt filter A not in cloth change mode

DCS LOCKOUT will prevent automatic operation of the respective pump. DCS TAGOUT will prevent automatic or manual operation of the pump and place the DCS in MANUAL. If a running feedback is not received within two seconds of the command to start, a pump failure alarm will be initiated and the pump will be placed in MANUAL.




Vacuum Pump

Personnel safety interlocks active in Automatic and Manual mode:

• Emergency stop trip wire on the left side

• Emergency stop trip wire on the right

• Emergency stop on belt filter local control panel

Machine safety interlocks active in Automatic and Manual mode:

• Vacuum pump liquid ring water low flow fault

• Filtrate receiver high level fault

• Vacuum pump motor electrical fault

• Vacuum pump motor stator over-temperature fault

• Vacuum pump motor bearings over-temperature fault

• Vacuum pump bearings over-temperature fault

• Vacuum pump motor vibration fault

• Vacuum pump vibration fault

Process safety interlocks active:

• Not cloth changing mode

• The Vacuum Pump Seal Water solenoid valve must be controlled open to allow the starting of the running of the vacuum pump




Cloth and Belt Washing System Pump Motor





Machine safety interlocks active in Automatic and Manual mode:

• Cloth & belt washing pump motor P102 electrical fault

• Tank T102 low level fault

Process safety interlocks active:


Recirculation Pump Motor

Recirculating Pump Motor personnel safety interlocks active in Automatic and Manual mode:




Recirculating Pump Motor machine safety interlocks active in Automatic and Manual mode:

• Recirculating Pump Motor electrical fault

• Recirculating Tank low level fault

Recirculating Pump Motor process safety interlocks active:





Recirculation Tank Agitator Motor





Machine safety interlocks active in Automatic, Manual and Cloth changing mode:

• Recirculating Tank agitator motor electrical fault

Process safety interlocks:

• Not applicable

Conveyors

The conveyor system is controlled in two parts, the dewatering system loadout and the rail car loadout. The dewatering system conveyors are controlled from the dewatering system. An automatic start sequence will start the selected conveyors, then the dewatering system, and auxiliary equipment. The railcar loadout conveyors are controlled from the rail loadout control room. An automatic start sequence will start the conveyors. The loadout hopper and sampler are started remotely. The weigh belt is controlled locally. Pull cord emergency stop switches are installed on all conveyors and act to stop equipment immediately. These switches are connected directly to the MCC for motor stopping as well as the DCS for annunciation and interlocking. Activation of the switch will stop its’ conveyor as well as adjacent conveyors, trippers and associated equipment.

As a train arrives at the rail loadout tower, the operator starts the loading sequence. The train is properly located via radio communication between the operator and the train engineer.

The pant leg chute is moved from its rest position to the parked position and the flop gate properly positioned. The surge bin cut-off gate is opened and gypsum loading commences. The rail loadout tower operator is responsible for starting the conveyor loading system via a remote DCS operator terminal. The operator observes the car loading and communicates with the train engineer to control the train speed. The flop gate is used to switch from one car to another. When the cars are loaded, the surge bin cut-off gate is closed, the conveyors are stopped and the pant leg chute is moved to the rest position.

Additional monitoring will be provided by the use of CCTV cameras. These will be installed at the storage barn, the loadout area and the DCS room.




Automatic Backwash Strainer

There are two automatic backwash strainers. The strainers operate in parallel. A local control panel is mounted at each strainer. The local panel contains the contactor for the backwash motor and a HAND/OFF/AUTOMATIC selector switch. When the H-O-A switch is in HAND, the backwash motor operates and the drain valve opens backwashing the filter. With the H-O-A in OFF, backwash will not occur. With the H-O-A on AUTO, backwash is controlled from the DCS.

Each strainer has a differential pressure transmitter connected to the DCS. Differential pressure is monitored (0-15 psid) in the DCS.

The DCS has AUTO FLUSH, START, and STOP operator controls. Operating the START button will initiate a backwash by sending a backwash command signal to the local control panel. The backwash will continue until the STOP button is operated. If the backwash duration reaches 5 minutes, an alarm is initiated. With the DCS in AUTO, a backwash is initiated when the differential pressure reaches 10 psid. The backwash duration is set for 2 minutes and may be changed by the operator. If the differential pressure remains high, another backwash will be initiated. In AUTO, a backwash is initiated every three hours. Backwash frequency may be changed by the operator.

Backwash in auto and backwash in progress are indicated in the DCS. A high-high differential pressure of 13 psid will initiate an alarm.

DCS TAGOUT will prevent DCS backwash initiation and place DCS filter control in MANUAL.




Gypsum Wash Water Storage Tank

Level in the gypsum wash water storage tank is maintained by adding water from the automatic backwash strainers through a solenoid operated on/off control valve.

The tank level transmitter is connected to the DCS. Level is monitored (0-36.75 feet) by the DCS. The control valve has a closed position switch and an open position switch connected to the DCS. The DCS displays valve OPEN, CLOSED, TRAVELING, or BAD.

The DCS has AUTO, OPEN, and CLOSE operator controls. Operating the OPEN button will energize the solenoid and open the valve. Operating the CLOSE button will close the valve. When the DCS is in AUTO, the valve will open on a low level of 7.5 feet. The valve will close on a level of 33 feet.

Level control in auto and valve called to open are indicated in the DCS. If the valve fails to open within 3 seconds, a valve failed alarm is initiated. A low-low level of 5.5 feet will initiate an alarm and stop all three wash water pumps.

DCS TAGOUT will prevent control valve operation and place DCS control in MANUAL.

Gypsum Wash Water Pumps There are three gypsum wash water pumps that supply wash water to the belt filters. One pump runs continuously for hose station use. A second pump runs when one belt filter is operating. All three pumps run when both belt filters are operating. Each pump has a DCS output for pump run and a DCS input for pump running. Each pump has a pump discharge pressure transmitter connected to the DCS. Pump discharge pressure is displayed (0-100 psig) on the operator station. The DCS has LEAD, START, and STOP operator controls for each pump. The pump selected to operate continuously, is started using the respective START button. The first pump started manually is designated as the service pump and indicated as such on the operator station. One of the remaining pumps is selected as the lead pump using the respective LEAD button. The pump is designated as the lead pump and indicated as such on the operator station. The remaining pump is designated as the lag pump and indicated as such on the operator station. If the pump designated as the lead pump is started manually, a DCS alarm is initiated.




A wash water pump is considered to be in AUTO and indicated as such on the operator station when:

• Not running manually • Not tagged out in the DCS • Not in Lockout at the DCS • Motor not failed • Wash water storage tank level not low-low (5.5 feet)

When in AUTO, the wash water pumps start when called for by one of the four belt filter system automatic start sequences. If no belt filter is running, the lead pump will start. If a belt filter is already running, the lead pump will also be running and the lag pump will start. Running feedback must be obtained before the start sequence may continue. When in AUTO, the wash water pumps stop when called to stop by one of the four belt filter system automatic shutdown sequences. The shutdown sequence stops the belt filter before it stops the wash water pump. So if one belt filter is running, the lag wash water pump will be stopped. If no belt filters are running, the lead wash water pump will be stopped. If the lead pump is running and a low discharge pressure of 20 psig is detected, an alarm is initiated and the lag pump is started. If the lag pump is running and a low discharge pressure is detected, only an alarm is initiated as the remaining pumps should be running already. If the service pump is running and a low discharge pressure is detected, only an alarm is initiated. DCS LOCKOUT will prevent automatic operation of the respective pump. DCS TAGOUT will prevent automatic or manual operation of the pump and place the DCS in MANUAL. Low-low wash water storage tank level will stop the pumps. If a running feedback is not received within two seconds of the command to start, a pump failure alarm will be initiated and the pump will be placed in MANUAL.

Gypsum Wash Water Recirculation

With a gypsum wash water pump running for hose station use, there will be times where no flow is required. To prevent dead heading the pumps, a recirculation line connects downstream of the wash water pumps and runs back to the wash water storage tank. Total wash water flow is measured using a magnetic flow meter and monitored (0 – 400 gpm) in the DCS. A ball control valve is installed in the recirculation line. A DCS flow controller maintains a minimum flow by recirculation wash water when water demand is lower than the minimum flow requirement. The controller set point is 125-150 gpm.

Control valve position is monitored (0-100%) in the DCS. The control station indicates valve open too far. High deviation between desired and actual valve position is also indicated on the operator station. If the DCS detects a bad transmitter, an alarm is initiated and the controller is set to manual. DCS TAGOUT will set the controller to manual and freeze the controller output.



2605.201.4 P roc es s F low Des cription

S tep 1

Make-Up water from the FGD Area flows through manual valve (DG001) before the incoming line splits and water flows through manual valve (DG002/DG003) before entering the Automatic Backwash Strainer (DG-SN-5800A/B). Upon exiting the Automatic Backwash Strainer (DG-SN-5800A/B), filtered water flows through manual valve (DG004/DG006) to a common header. Water flows through Level Control Valve (DG-LV-5801) and manual valve (DG310) before terminating at the Filtered Water Storage Tank (GD-TK-5801). The strainers are flushed through Drain Valve (DG-XV-5800A/B). Reference Drawing No. E-153951-00-N-0104, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Water Distribution System Sht 1 of 2.

S tep 2

Water from Filtered Water Storage Tank (GD-TK-5801) flows through drain valve (DG008) or overflow piping to the Dewatering Sump (WW-SU-5390). Reference Drawing No. E-153951-00-N-0104, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Water Distribution System Sht 1 of 2.

S tep 3

Water from Filtered Water Storage Tank (GD-TK-5801) flows through manual valve (DG009) to a common header which splits into three lines, each supplying the Filtered Water Distribution Pumps (DG-PU-5802A/B/C) through manual pump suction valve (DG010/DG011/DG012). Filtered Water Distribution Pumps (DG-PU-5802A/B/C) discharge through manual pump discharge valve (DG023/DG024/DG025) to a common header. Reference Drawing No. E-153951-00-N-0104, Sheet 1, Rev. 0, Process Piping and Instrumentation Diagram.

S tep 4

Water flows through Flow Element (DG-FE-5801) past recirculation piping after which the common header splits into three supply lines. Water flows through manual valve (DG030/DG031/DG032) and through Pressure Regulating Valves (DG-PV-5803A/B/C) servicing Dewatering System A & B and service water users. Water recirculated back to the Filtered Water Storage Tank (GD-TK-5801) flows through manual valve (DG029) and flow valve (DG-FV-5801). Reference Drawing No. E-153951-00-N-0104, Sheet 1, Rev. 0, Process Piping and Instrumentation Diagram Water Distribution System Sht 1 of 2.




Step 5 Filtered water from Filtered Water Distribution Pumps (DG-PU-5802A/B/C) flows to Dewatering System Liquid Ring Collection Tank (DG-TK-5806/5816) through an installed butterfly valve (DG-XV-5806/5816) (Note: DG-XV-5806/5816 are not shown on the drawing) and manual valve (DG170/DG205) and Level Regulating Valve (DG-LV-5806/5816). Water from Filtered Water Distribution Pumps (DG-PU-5802A/B/C) also flows to the Dewatering System Cloth Wash Water Recovery Tank (DG-TK-5807/5817) through manual valve (DG163/DG200) and Level Regulating Valve (DG-LV-5807/5817). The Liquid Ring Collection Tank and the Cloth Wash Water Recovery Tank have overflow piping and drain piping to a common drain header. Seal water flows through throttling valve (DG270/DG271) and rotameter (DG-FI-5807) to provide a seal for level transmitter (DG-LIT-5807/5817). The Cloth Wash Water Recovery Tank has an agitator (DG-AG-5807) which prevents the precipitation of solids. Reference Drawing No. E-53951-00-N-0107, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Dewatering System A Sht 2 of 2 and E-153951-00-N-0109, Sheet 2, Rev. 1, Process Piping and Instrumentation Diagram Dewatering System B Sht 2 of 2. Step 6 The Dewatering System Vacuum Pump (DG-PU-5808/5818) create the vacuum in the Dewatering System Filtrate Receivers (DG-TK-5805A/B & 5815A/B), this vacuum is the drying force at the Dewatering System Vacuum Belt Filter (GD-FL-5804/5814) which dewaters the gypsum. Seal water on the Dewatering System Vacuum Pump and water diverted by a water separator on the vacuum pump exhaust is captured and reused in the Dewatering System Liquid Ring Collection Tanks (DG-TK-5806/5816). Reference Drawing No. E-153951-00-N-0107, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Dewatering System A Sht 2 of 2 and E-153951-00-N-0109, Sheet 2, Rev. 1, Process Piping and Instrumentation Diagram Dewatering System B Sht 2 of 2. Step 7 Three gypsum slurry feeder lines (Units 1 & 2 Gypsum Slurry Transfer Pumps, Units 3 & 4 Gypsum Slurry Transfer Pumps and a spare Gypsum Slurry Transfer Pump) supply a common header feeding the slurry through valve (DG-XV-5804/5814) and Flow Element (DG-FE-5804A/5814A) to the Dewatering System Hydrocyclone Separator (DG-HY-5804/5814). The overflow enters the drain and the underflow flows to a common header loading gypsum on the Dewatering System Vacuum Belt Filter (GD-FL-5804/5814). Reference Drawing No. E-153951-00-N-0106, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Dewatering System A Sht 1 of 2 and Drawing No. E-153951-00-N-0108, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Dewatering System B Sht 1 of 2.




Step 8 Dewatering System Recirculation Pump (DG-PU-5809/5819) pumps water from the Cloth Wash Water Recovery Tank (DG-TK-5807/5817). Dewatering System Recirculation Pump seal water is provided from the discharge of the Gypsum Wash Water Distribution Pumps. Reference Drawing No. E-53951-00-N-0107, Sheet 1, Rev. 1, Process Piping and instrumentation Diagram Dewatering System A Sht 2 of 2 and E-153951-00-N-0109, Sheet 2, Rev. 1, Process Piping and Instrumentation Diagram Dewatering System B Sht 2 of 2.

Step 9 The discharge of the Dewatering System Recirculation Pump (DG-PU-5809/5819) is used as a supply to the Cake Wash Header on the Dewatering System Vacuum Belt Filter (GD-FL-5804/5814) to remove chlorides from the gypsum cake during the dewatering process. Suction from Dewatering System Vacuum Pump (DG-PU-5808/5818) dewaters the gypsum. The return water exits the Dewatering System Vacuum Belt Filter (GD-FL-5804/5814) through two 30” lines. Reference Drawing No. E-153951-00-N-0106, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Dewatering System A Sht 1 of 2 and Drawing No. E-153951-00-N-0108, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Dewatering System B Sht 1 of 2.

Step 10 The return water flows through two 30” lines terminating at the Dewatering System Filtrate Receiver (DG-TK-5805A/B and DG-TK-5815A/B). Reference Drawing No. E-153951-00-N-0107, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Dewatering System A Sht 2 of 2 and Drawing No. E-153951-00-N-0107, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Dewatering System B Sht 2 of 2.

Step 11 The Dewatering System Vacuum Belt Filter (GD-FL-5804/5814) removes water from the gypsum slurry, the gypsum is then deposited in a chute leading to Gypsum Conveyor Flopgate (FG1). Reference Drawing No. E-153951-00-N-0106, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Dewatering System A Sht 1 of 2 and Drawing No. E-153951-00-N-0108, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Dewatering System B Sht 1 of 2.

Step 12 The Cloth Wash Pump (DG-PU-5806/5816) pumps water from the Liquid Ring Collection Tank and discharges through manual valve (DG167/203). Reference Drawing No. E-53951-00-N-0107, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Dewatering System A Sht 2 of 2 and E-153951-00-N-0109, Sheet 2, Rev. 1, Process Piping and Instrumentation Diagram Dewatering System B Sht 2 of 2.




Step 13 The discharge of the Cloth Wash Pump (DG-PU-5806/5816) then flows through Flow Element (DG-FE-5804G) before entering a spray manifold to rinse the Dewatering System Vacuum Belt Filter (GD-FL-5804/5814). The Cloth Wash Water is captured and directed through a 6” line to the Cloth Wash Recovery Tank (DG-TK-5807/5817). Reference Drawing No. E-153951-00-N-0106, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Dewatering System A Sht 1 of 2 and Drawing No. E-153951-00-N-0108, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Dewatering System B Sht 1 of 2.

S tep 15

Compressed air is supplied to the Cloth Belt Tensioning and Tracking System through manual valve (DG141). Reference Drawing No. E-153951-00-N-0106, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Dewatering System A Sht 1 of 2 and Drawing No. E-153951-00-N-0108, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Dewatering System B Sht 1 of 2. Step 16 The Dewatering System Filtrate Pumps (DG-PU-5805A/B and DG-PU-5815A/B) pump water from the Dewatering System Filtrate Receiver A (DG-TK-5805A) to the Return Water Tanks (WR-TK-5400A/B). Seal Water is supplied to Dewatering System Filtrate Pumps (DG-PU-5805A/B and DG-PU-5815A/B) from the output of the Gypsum Wash Water Distribution Pumps. Reference Drawing No. E-153951-00-N-0107, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Dewatering System A Sht 2 of 2 and E-153951-00-N-0109, Sheet 2, Rev. 1, Process Piping and Instrumentation Diagram Dewatering System A Sht 2 of 2.

Step 17 The dried gypsum output from Dewatering System Vacuum Belt Filter A & B (GD-FL-5804/5814) is directed by FGD Flop Gates (GX-FG-5841/5842) onto one of two 30” Belt Conveyors BCG1A or BCG1B (GX-CN-5843/5844). Reference Drawing No. E-153951-00-N-0110, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Gypsum Handling.




Step 18 Dewatered Gypsum deposited on the 30” Belt Conveyor BCG1A or BCG1B (GX-CN-5843/5844) is conveyed to and deposited onto 30” Belt Conveyor BCG2A or BCG2B (GX-CN-5846/5847). The 30” Belt Conveyor BCG2A or BCG2B (GX-CN-5846/5847) then conveys the gypsum to the 30” Tripper TRP1 or TRP2 (GX-CN-5849/5850) where gypsum is stripped from the conveyor and deposited for storage. Reference Drawing No. E-153951-00-N-0110, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Gypsum Handling. Step 19 From gypsum storage, the gypsum loaded into Loadout Hopper LH1 and LH2 (GX-HP-5853/5856) using a frontend loader. The gypsum then funnels through Loadout Hopper LH1 and LH2 (GX-HP-5853/5856) onto 48” Belt Conveyor BCG3 (GX-CN-5851). 48” Belt Conveyor BCG3 (GX-CN-5851) conveys the gypsum to 48” Belt Conveyor BCG4 (GX-CN-5859). Reference Drawing No. E-153951-00-N-0111, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Gypsum Handling. Step 20 48” Belt Conveyor BCG4 (GX-CN-5859) deposits Gypsum in Surge Bin (GX-BN-5866) before loading into empty railcars through FG3 Flopgate W/ Pant Leg Chute (GX-FG-5865). Valve DG-SV-5866B controls output from the surge Bin. Valve DG-SV-5867B controls flop gate position over the railcar and Valve DG-SV-5865A controls the position of the pant leg chute (DG-FG-5865). Reference Drawing No. E-153951-00-N-0111, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Gypsum Handling. Step 20 While on the 48” Belt Conveyor BCG4 (GX-CN-5859) the Gypsum is sampled for quality by 6” Primary Swing Arm Sampler (GD-CN-5861A) and a 1” Secondary Swing Arm Sampler (GD-CN-5861A). The sampler rejects are returned to the 48” Belt Conveyor BCG4 (GX-CN-5859) by the Swing Arm Sampler Reject Conveyor (GD-CN-5861C). The gypsum on the 48” Belt Conveyor BCG4 (GX-CN-5859) is weighed by Belt Scale (GD-SA-5862). Reference Drawing No. E-153951-00-N-0111, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Gypsum Handling. S tep 21

Two Air Compressors (DG-CO-5820 A/B) supply air for Gypsum Dewatering System compressed air needs. Compressed air flows past cross-feed piping to compressed air Prefilters (DG-FL-5020A thru D and G through K). Reference Drawing No. E-153951-00-N-0112, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Compressed Air System.



Step 22 Compressed air is dried by No. 1 & 2 Air Dryer (DG-DY-5820 A/B), then passes through After-Filter (DG-FL-5820E, F, L & M) to a common header before entering the Air Receiver (DG-RV-5820). Reference Drawing No. E-153951-00-N-0112, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Compressed Air System.

Step 23 Compressed air flows from the Air Receiver (DG-RV-5820) through manual valve (DG217) to a common header branching into four headers. Compressed air flows through manual valves (DG225/226/227/228) to supply SCG equipment, Dewatering Systems A & B and Service Air users. Reference Drawing No. E-153951-00-N-0112, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Compressed Air System.

Step 24 The Dewatering Building has Service Air and Filtered Water facilities at Dewatering Building Utility Stations 1 through 5. Reference Drawing No. E-153951-00-N-0105, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Water Distribution Sht 2 of 2.

Step 25 The Storage Barn has Service Air and Filtered Water facilities at Storage Barn Utility Stations 6 through 12. Reference Drawing No. E-153951-00-N-0105, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Water Distribution Sht 2 of 2.

Step 26 The Reclaim Conveyor has Service Air and Filtered Water facilities at Reclaim Conveyor Utility Stations 13 through 17 and the No. 2 Air Receiver (DG-RV-5810). Reference Drawing No. E-153951-00-N-0105, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Water Distribution Sht 2 of 2.

Step 27 The Rail Loadout has Service Air and Filtered Water facilities at Rail Loadout Utility Stations 18 through 23 and the No.3 Air Receiver (DG-RV-5811). Reference Drawing No. E-153951-00-N-0105, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Water Distribution Sht 2 of 2.

S tep 28

Facilities exist for a potable water Safety Shower (DG-EW-5829) in the Dewatering Building Battery Room. A 500 gallon polypropylene acid neutralization Tank (DG-TK-5827) captures the contaminated water. Reference Drawing No. E-153951-00-N-0113, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Misc. Systems.

S tep 29

The Dewatering Building Trench empties into the Dewatering Sump (WW-SU-5390). Reference Drawing No. E-153951-00-N-0113, Sheet 1, Rev. 1, Process Piping and Instrumentation Diagram Misc. Systems.



2605.201.5 Drawing R eferenc es

The Gypsum Dewatering System is illustrated on the following drawings: Number Sheet Rev Title

P&IDs

• D1M20054 1 1 FGD Project P&ID - Gypsum Dewatering Area Instrument Air

• D3M20047 1 0 FGD Project P&ID - Filtered Water To Gypsum Dewatering

• D1M20031 1 3 FGD Project P&ID U1 & U2 Gypsum Slurry Transfer Tank and Transfer Tank Pumps

• D1M20038 1 6 FGD Project P&ID U1 - U4 Return Water System

• D1M20039 1 3 FGD Project P&ID U1 & U2 Return Water Distribution

• D3M20031 1 3 FGD Project P&ID U3 & U4 Gypsum Slurry Transfer Tank and Transfer Tank Pumps

• D3M20039 1 2 FGD Project P&ID U3 & U4 Return Water Distribution

• S92458 (E-153951-00-N-0104)

1 C Process Piping and Instrumentation Diagram Water Distribution System Sht 1 of 2

• S92459 (E-153951-00-N-0105)

1 C Process Piping and Instrumentation Diagram Water Distribution Sht 2 of 2

• S92460 (E-153951-00-N-0106)

1 C Process Piping and Instrumentation Diagram Dewatering System A Sht 1 of 2

• S92461 (E-153951-00-N-0107)

1 C Process Piping and Instrumentation Diagram Dewatering System A Sht 2 of 2

• S92462 (E-153951-00-N-0108)

1 C Process Piping and Instrumentation Diagram Dewatering System B Sht 1 of 2

• S92463 (E-153951-00-N-0109)

1 C Process Piping and Instrumentation Diagram Dewatering System B Sht 2 of 2

• S92464 (E-153951-00-N-0110)

1 C Process Piping and Instrumentation Diagram Gypsum Handling




Number Sheet Rev Title P&IDs

• S92465 (E-153951-00-N-0111)

1 C Process Piping and Instrumentation Diagram Gypsum Handling

• S92466 (E-153951-00-N-0112)

1 C Process Piping and Instrumentation Diagram Compressed Air System

• S92467 (E-153951-00-N-0113)

1 C Process Piping and Instrumentation Diagram Misc. Systems

Elementary Diagrams

• E3E30506 5 0 FGD Project Elementary Diagram Limestone 4160V Bus C FDR BKR 648676 To Gypsum Dewatering Plant



• E3E30506 2 0 FGD Project Elementary Diagram Limestone 4160V BUS C FDR BKR 648676 To Gypsum Dewatering Plant

• E3E30506 1 0 FGD Project Elementary Diagram Limestone 4160V BUS C FDR BKR 648676 To Gypsum Dewatering Plant

• E3E30507 5 0 FGD Project Elementary Diagram Limestone 4160V BUS D FDR BKR 648768 To Gypsum Dewatering Plant






Number Sheet Rev Title Elementary Diagrams



• S93510 1 C FGD - Scrubber - Gypsum Dewatering Project - Electrical - Vacuum Pump No. 1 Motor Controller Dc Schematic

• S93511 1 C FGD - Scrubber - Gypsum Dewatering Project - Electrical - Vacuum Pump No. 1 Motor Controller Dc Schematic

• S95166 1 0 FGD - Scrubber - Gypsum Dewatering Project - Electrical Motor Elementary Sampling System GX-MO-5861A, B & C Sh.2 Of 2

• S95185 1 A FGD - Scrubber - Gypsum Dewatering Project -Electrical Elementary Diagram Sump Pump B WW-MO-5390B

• S95186 1 A FGD - Scrubber - Gypsum Dewatering Project -Electrical Elementary Diagram Sump Pump A WW-MO-5390A

• S95187 1 A FGD - Scrubber - Gypsum Dewatering Project -Electrical Elementary Diagram Dewatering Area Sump Mixer WW-MO-5390

• S95188 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram Return Water Tank B Mixer WR-MO-5400b

• S95189 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram Return Water Tank A Mixer WR-MO-5400a

• S95190 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram Hydraulic Unit GX-MO-5870

• S95191 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram 48" Belt Conveyor BCG4 GX-MO-5859





• S95192 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram 48" Belt Conveyor BCG3 GX-MO-5851

• S95193 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram Tripper TRP Cable Reel Drive GX-MO-5850C

• S95194 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram Tripper TRP2 Positioner No.2 GX-MO-5850B

• S95195 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram Tripper TRP2 Positioner No.1 GX-MO-5850A

• S95196 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram Tripper TRP1 Cable Reel Drive GX-MO-5849C

• S95197 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram Tripper TRP1 Positioner No. 2 GX-MO-5849bB

• S95198 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram Tripper TRP1 Positioner No. 1 GX-MO-5849A

• S95199 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram 30" Belt Conveyor BCG2B GX-MO-5847

• S95504 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram Gyp Dw Vacuum Pump No. 2

• S95505 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram Gyp Dw Vacuum Pump No. 2

• S95662 1 0 FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram No. 1 Automatic Water Strainer

• S95663 1 0 FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram No. 2 Automatic Water Strainer





• S95664 1 0 FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram Flop Gate Fge Sh 1 Of 2 GX-MO-5841

• S95665 1 0 FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram Flop Gate FG2 Sh 2 Of 2 GX-MO-5841



• S95679 1 0 FGD - Scrubber - Gypsum Dewatering Project - Electrical Ele. Diagram Loadout Hopper LH1 Screw Feeder No. 1 GX-MO-5853c

• S95680 1 0 FGD - Scrubber - Gypsum Dewatering Project - Electrical Ele. Diagram Loadout Hopper LH1 Screw Feeder No. 2 GX-MO-5853d

• S95681 1 0 FGD - Scrubber - Gypsum Dewatering Project - Electrical Ele. Diagram Loadout Hopper LH2 Screw Feeder No.1 GX-MO-5856C

• S95682 1 0 FGD - Scrubber - Gypsum Dewatering Project - Electrical Ele. Diagram Loadout Hopper LH2 Screw Feeder No.2 GX-MO-5856D

• S95683 1 0 FGD - Scrubber - Gypsum Dewatering Project - Electrical Motor Elementary Sampling System GX-MO-5861A, B & C Sh.1 Of 2

• S95735 1 0 FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram Loadout Hopper No 1 Wheel No 1 Drive








• S96100 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram 30" Belt Conveyor BCG2A GX-MO-5846

• S96101 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram 30" Belt Conveyor BCG1B GX-MO-5844

• S96102 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram 30" Belt Conveyor BCG1a GX-MO-5843

• S96103 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram Dewatering Bldg. Exhaust Fan No.5 DG-MO-5825E

• S96104 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram Dewatering Bldg. Exhaust Fan No.4 DG-MO-5825D

• S96105 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram Dewatering Bldg. Exhaust Fan No.3 DG-MO-5825C

• S96106 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram Dewatering Bldg. Exhaust Fan No.2 DG-MO-5825B

• S96107 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram Dewatering Bldg. Exhaust Fan No.1 DG-MO-5825A

• S96108 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram Dewater Sys "B" Recirculating Pump Dg-M0-5819

• S96109 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram DW Sys "B" Cloth Wash Water Rec Tank Agitator

• S96110 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram DW Sys "B Cloth Wash Pump DG-MO-5816





• S96111 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram Sys "B” Filtrate Pump No.2 DG-MO-5815B

• S96112 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram DW System "B" Filtrate Pump No.1 DG-MO-5815A

• S96113 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram DW System "B" Filter Drive DG-MO-5814

• S96114 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram DW System "A" Recirculating Pump DG-MO-5809

• S96115 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram DW Sys "A" Cloth Wash Water Rec Tank Agitator

• S96116 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram DW Sys "A" Cloth Wash Pump DG-MO-5806

• S96117 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram DW Sys "A" Filtrate Pump No.2 DG-MO-5805B

• S96118 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram DW Sys "A" Filtrate Pump No.1 DG-MO-5805A

• S96119 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram DW System A Filter Drive DG-MO-5804

• S96120 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram No.3 Gypsum Wash Water Dist. Pump DG-MO-5802C

• S96121 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram No.2 Gypsum Wash Water Dist. Pump DG-MO-5802B

• S96122 1 A FGD - Scrubber - Gypsum Dewatering Project - Electrical Elementary Diagram No.1 Gypsum Wash Water Dist. Pump DG-MO-5802A




Number Sheet Rev Title Elevation Drawings

• 4886-GA1 1 1 Two Stage FGD Gypsum System- General Arrangement , Elevation & Sections

• 4886-GA2 1 1 Raw Coal Primary Swing Sampler Gen’l Arrg’t Model SWS-C-48-6 S.N.403

Single Lines • 94001

(E-153951-00-E-0602)

1 A Electrical DG-MCMAA-5000 And DG-MCMAB-5000 480V MCC Single Line Diagrams

• 94002 (E-153951-00-E-0603)

1 A Electrical DG-MCMBA-5000 And DG-MCMBB-5000 480V MCC Single Line Diagrams

• S92108 (E-153951-00-E-0600)

1 A 4160V Bus A Single Line Diagram Gypsum Dewatering System

• S92109 (E-153951-00-E-0601)

1 C 4160V Bus B Single Line Diagram Gypsum Dewatering System

• S94965 1 B FGD - Scrubber -Plumbing -Dewatering Building -Electrical 480V Distribution Single Line Diagram

• S94949 1 0 FGD - Scrubber - Gypsum Dewatering Project - Power Distribution System - One-Line Diagram

• S95708 1 0 FGD - Scrubber -Plumbing -Dewatering Building -Electrical125VDC Distribution Single Line Diagram

Distribution Panels

• S94950 1 B FGD - Scrubber - Gypsum Dewatering Project - Electrical Panelboard Schedules

• S94948 1 C FGD - Scrubber - Gypsum Dewatering Project - Electrical Panelboard Schedules

• S94027 1 D FGD - Scrubber - Gypsum Dewatering Project - Electrical Panelboard Schedules

Wiring Diagrams • SE101264 1 0 Automatic Strainer Wiring Diagram

• 07-7171-E2 1 1 Swing Arm Sampler System Wiring Diagram




Number Sheet Rev Title Functional Control Diagrams

• D5F02000 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Belt Drive Start/Stop

• D5F02001 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Permissives Sheet 1





• D5F02006 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Belt Drive Motor

• D5F02007 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Belt Drive Interlocks SH.1



• D5F02010 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Automatic Mode Status





• D5F02011 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Automatic Mode Selection

• D5F02012 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Mode 1 Start

• D5F02013 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Auto Start Sheet 1

• D5F02014 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Auto Start Sheet 2

• D5F02015 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Mode 2 Start

• D5F02018 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Mode 3 Start

• D5F02019 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Auto Start Sheet 1

• D5F02020 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Auto Start Sheet 2

• D5F02021 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Mode 4 Start

• D5F02025 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Auto Shutdown Sheet 1

• D5F02026 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Auto Shutdown Sheet 2





• D5F02027 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Conveyor Group A Auto Shutdown

• D5F02030 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Conveyor Group B Auto Shutdown

• D5F02031 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Auto Shutdown Sheet 1

• D5F02032 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Auto Shutdown Sheet 2

• D5F02037 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram No.1 Gypsum Wash Water Distribution Pump



• D5F02040 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Flopgate FG1

• D5F02041 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Flopgate FG2

• D5F02042 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Filtrate Pump Auto Start

• D5F02043 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Filtrate Pump Auto Start/Stop





• D5F02044 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A No.1 Filtrate Pump

• D5F02045 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A No.2 Filtrate Pump

• D5F02046 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Cloth Wash Pump

• D5F02047 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Cloth Wash Pump Auto Start

• D5F02048 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Vacuum Pump

• D5F02049 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Vac. Pump Auto Start/Stop

• D5F02050 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Permissives

• D5F02051 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Vac. Pump Seal Water Valve

• D5F02052 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Recirculation Pump

• D5F02053 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Recirc. Pump Auto Start/Stop

• D5F02054 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Recovery Tank Agitator

• D5F02055 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Agitator Auto Start





• D5F02055 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Agitator Auto Start

• D5F02056 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram No.1 Automatic Backwash Strainer

• D5F02057 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram No.1 Automatic Backwash Strainer Backwash Valve

• D5F02058 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram No.2 Automatic Backwash Strainer

• D5F02059 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram No.2 Automatic Backwash Strainer Backwash Valve

• D5F02060 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Wash Water Storage Tank Fill Valve

• D5F02061 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Wash Water Pump Recirculation Valve

• D5F02062 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Slurry Supply

• D5F02063 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Slurry Supply

• D5F02064 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Hydroclone Slurry Supply

• D5F02065 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Speed Control





• D5F02066 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Local Speed Control

• D5F02067 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Miscellaneous

• D5F02068 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Vac. Pump Motor Temp.

• D5F02069 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Vacuum Pump Vibration

• D5F02070 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Vacuum Pump Temp.

• D5F02071 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Gypsum W W Distribution Pump Auto Start

• D5F02073 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Vacuum Pump A Air Bleed Valve

• D5F02080 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Belt Drive Start/Stop

• D5F02081 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Permissives Sheet 1









• D5F02086 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Drive Belt Motor

• D5F02087 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Drive Belt Interlocks



• D5F02090 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Filtrate Pump Auto Start

• D5F02091 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Filtrate Pump Auto Start

• D5F02092 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B No.1 Filtrate Pump

• D5F02093 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B No.2 Filtrate Pump

• D5F02094 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Cloth Wash Pump

• D5F02095 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Cloth Wash Pump Auto Start





• D5F02095 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Cloth Wash Pump Auto Start

• D5F02096 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Vacuum Pump

• D5F02097 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Vacuum Pump Auto Start/Stop

• D5F02098 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Vac Pump Permissives

• D5F02099 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Vacuum Pump Seal Water Valve

• D5F02100 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Recirc Pump

• D5F02101 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Recirc Pump Auto Start/Stop

• D5F02102 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Recovery Tank Agitator

• D5F02103 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Recovery Tank Agitator Auto Start

• D5F02104 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Hydroclone Slurry Supply

• D5F02105 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Speed Control





• D5F02106 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Local Speed Control

• D5F02107 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Miscellaneous

• D5F02108 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Vacuum Pump Motor Temperature

• D5F02109 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Vacuum Pump Vibration

• D5F02110 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Vacuum Pump Vibration

• D5F02111 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System B Vacuum Pump B Air Bleed Valve

• D5F02120 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Conveyor BCG 1A Permissives Sh1

• D5F02121 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Conveyor BCG 1A Permissives Sheet 2

• D5F02122 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Conveyor BCG 1A Permissives Sheet 3

• D5F02123 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Conveyor BCG 1A Auto Start/Stop

• D5F02124 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Conveyor BCG 1A Drive Motor





• D5F02125 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Conveyor BCG 2A Permissives Sh1

• D5F02126 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Conveyor BCG 2A Permissives Sh 2



• D5F02129 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Conveyor BCG 2A Auto Start/Stop

• D5F02130 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Conveyor BCG 2A Drive Motor

• D5F02131 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Tripper Trp 1 Start/Stop

• D5F02132 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Tripper Trp 1 Drive A

• D5F02133 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Tripper Trp 1 Drive B

• D5F02134 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Tripper Trp 1 Reel

• D5F02135 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Tripper Trp 1 Status

• D5F02136 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Tripper Trp 1 Storage Level





• D5F02140 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Conveyor BCG 1B Permissives Sh 1



• D5F02143 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Conveyor BCG 1B Auto Start/Stop

• D5F02144 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Conveyor BCG 1B Drive Motor





• D5F02149 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Conveyor BCG 2B Auto Start/Stop

• D5F02150 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Conveyor BCG 2B Drive Motor





• D5F02151 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Tripper Trp 2 Start/Stop

• D5F02152 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Tripper Trp 2 Drive A

• D5F02153 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Tripper Trp 2 Drive B

• D5F02154 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Tripper Trp 2 Reel

• D5F02155 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Tripper Trp 2 Status

• D5F02156 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Tripper Trp 2 Storage Level

• D5F02158 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Loading System Auto Start

• D5F02159 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Dewatering System A Auto Start Sh 1

• D5F02160 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Loading System Auto Start

• D5F02161 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Loading System Auto Shutdown Sh. 1

• D5F02190 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Loading System Auto Shutdown Sh. 2

• D5F02180 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Loadout Hopper Selection





• D5F02165 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Loadout Hopper LH1 Screw Conveyor Drive Motors

• D5F02168 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Loadout Hopper LH1 Screw Conveyor Drive Motors

• D5F02169 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Conveyor BCG 3 Permissives Sh 1




• D5F02173 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Conveyor BCG 3 Auto Start/Stop

• D5F02174 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Conveyor BCG 3 Drive Motor











• D5F02181 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Train Loading Cutoff Gate

• D5F02182 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Train Loading Flop Gate FG3

• D5F02183 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Train Loading Chute Traverse

• D5F02184 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Train Loading Hydraulic Power Unit

• D5F02185 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Train Loading Car Location

• D5F02187 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Train Loading Belt Scale










• D5F02181 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Train Loading Cutoff Gate

• D5F02182 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Train Loading Flop Gate FG3

• D5F02183 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Train Loading Chute Traverse

• D5F02184 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Train Loading Hydraulic Power Unit

• D5F02185 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Train Loading Car Location

• D5F02187 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram Train Loading Belt Scale

• D5F02200 1 0 FGD Scrubber Gypsum Dewatering Project Functional Control Diagram 480V MCC Disconnect Switches Sh 1





Number Sheet Rev Title Loop Sheets

• S95235 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet DW System A Belt Filter Drive Start Horn DG-EA-5804

• S95236 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet DW System B Belt Filter Drive Start Horn DG-EA-5814

• S95237 1 0 FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG1A Start Horn DG-EA-5843

• S95238 1 0 FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG1B Start Horn DG-EA-5844

• S95239 1 0 FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG2A Start Horn DG-EA-5846A

• S95240 1 0 FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG2A Start Horn DG-EA-5846B

• S95241 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG2A Start Horn DG-EA-5846C

• S95242 1 0 FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG2B Start Horn DG-EA-5874A

• S95243 1 0 FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG2B Start Horn DG-EA-587B

• S95244 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG2B Start Horn DG-EA-5874C

• S95245 1 0 FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG3 Start Horn DG-EA-5851A





• S95246 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG3 Start Horn DG-EA-5851B

• S95247 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG3 Start Horn DG-EA-5851C

• S95248 1 0 FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG4 Start Horn DG-EA-5859A

• S95249 1 0 FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG4 Start Horn DG-EA-5859B

• S95250 1 0 FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG4 Start Horn DG-EA-5859C

• S95251 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Dewatering System A Belt Filter Drive E-Stop DG-ES-5804A

• S95252 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Dewatering System B Belt Filter Drive E-Stop DG-ES-5814A

• S95253 1 B FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Railcar Loading Conveyor E-Stop DG-ES-5870A

• S95254 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Dewatering System A Belt Filter Drive E-Stop DG-ESL-5804A

• S95255 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Dewatering System A Belt Filter Drive E-Stop DG-ESL-5804B

• S95256 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Dewatering System A Belt Filter Drive E-Stop DG-ESL-5814A





• S95257 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Dewatering System B Belt Filter Drive E-Stop DG-ESL-5814B

• S95258 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1A E-Stop DG-ESL-5843A

• S95259 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Loadout Hopper LH2 Belt Feeder No. 1 DG-ESL-5856A

• S95260 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1A E-Stop DG-ESL-5843B

• S95261 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1A E-Stop DG-ESL-5843C

• S95262 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1A E-Stop DG-ESL-5843D

• S95263 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1B E-Stop DG-ESL-5844A

• S95264 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1B E-Stop DG-ESL-5844B

• S95265 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1B E-Stop DG-ESL-5844C

• S95266 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1B E-Stop DG-ESL-5844D

• S95267 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1B E-Stop DG-ESL-5844E





• S95268 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1B E-Stop DG-ESL-5844F


• S95270 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG2A E-Stop DG-ESL-5846B

• S95271 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG2A E-Stop DG-ESL-5846C

• S95272 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG2A E-Stop DG-ESL-5846D

• S95273 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG2A E-Stop DG-ESL-5846E


• S95275 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG2B E-Stop DG-ESL-5847B

• S95276 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG2B E-Stop DG-ESL-5847C

• S95277 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG2B E-Stop DG-ESL-5847D

• S95278 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG2B E-Stop DG-ESL-5847E





• S95279 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG3 E-Stop DG-ESL-5851A

• S95280 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG3 E-Stop DG-ESL-5851B

• S95281 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG3 E-Stop DG-ESL-5851C


• S95283 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG3 E-Stop DG-ESL-5851E

• S95284 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG3 E-Stop DG-ESL-5851F

• S95286 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG4 E-Stop DG-ESL-5859A

• S95287 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG4 E-Stop DG-ESL-5859B


• S95289 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG4 E-Stop DG-ESL-5859D

• S95290 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG4 E-Stop DG-ESL-5859E





• S95291 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Dewatering System A Belt Filter Drive E-Stop DG-ESR-5804A

• S95292 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Dewatering System A Belt Filter Drive E-Stop DG-ESR-5804B

• S95293 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Dewatering System B Belt Filter Drive E-Stop DG-ESR-5814A

• S95294 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Dewatering System B Belt Filter Drive E-Stop DG-ESR-5814B

• S95295 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1A E-Stop DG-ESR-5843A

• S95296 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1A E-Stop DG-ESR-5843B

• S95297 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1A E-Stop DG-ESR-5843C

• S95298 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1A E-Stop DG-ESR-5843D

• S95299 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1B E-Stop DG-ESR-5844A

• S95300 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1B E-Stop DG-ESR-5844B

• S95301 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1B E-Stop DG-ESR-5844C





• S95302 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1B E-Stop DG-ESR-5844D


• S95304 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG2A E-Stop DG-ESR-5846B

• S95305 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG2A E-Stop DG-ESR-5846C

• S95306 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG2A E-Stop DG-ESR-5846D

• S95307 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG2A E-Stop DG-ESR-5846E


• S95309 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG2B E-Stop DG-ESR-5847B

• S95310 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG2B E-Stop DG-ESR-5847C

• S95311 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG2B E-Stop DG-ESR-5847D

• S95312 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG2B E-Stop DG-ESR-5847E





• S95313 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG3 E-Stop DG-ESR-5851A

• S95314 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG3 E-Stop DG-ESR-5851B

• S95315 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG3 E-Stop DG-ESR-5851C

• S95316 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG3 E-Stop DG-ESR-5851d

• S95317 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG3 E-Stop DG-ESR-5851E

• S95318 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG3 E-Stop DG-ESR-5851F

• S95319 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG4 E-Stop DG-ESR-5859A

• S95320 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG4 E-Stop DG-ESR-5859B

• S95321 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG4 E-Stop DG-ESR-5859C

• S95322 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG4 E-Stop DG-ESR-5859D

• S95323 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG4 E-Stop DG-ESR-5859E





• S95324 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Gypsum Wash Water Pump Recirculation DG-FIT/FY-5801

• S95325 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Dewatering System A Slurry Feed DG-FIT-5804A

• S95326 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Dewatering System A Belt Filter Cake Wash DG-FIT-5804B

• S95327 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A Belt Filter Vacuum Wear Belt Lubedg-Fit-5804C

• S95328 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A Belt Filter Vacuum Wear Belt Lubedg-Fit-5804D

• S95329 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A Belt Filter Sup Rail Lube DG-FIT-5804E

• S95330 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A Belt Filter Sup Rail Lube DG-FIT-5804F

• S95331 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A Belt Filter Cloth Wash DG-FIT-5804G

• S95332 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A No.1 Filtrate Pump DG-FIT-5805A

• S95333 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A No.1 Filtrate Pump DG-FIT-5805B

• S95334 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A Vacuum Pump Water DG-FIT-5808





• S95335 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A Recirculation Pump DG-FIT-5809

• S95336 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System B Slurry Feed DG-FIT-5814A

• S95337 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System B Belt Filter Cake Wash DG-FIT-5814B

• S95338 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System B Belt Fil Vac Wear Belt Lube DG-FIT-5814C

• S95339 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System B Belt Fil Vac Wear Belt Lube DG-FIT-5814D

• S95340 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System B Belt Fil Sup Rail Lube DG-FIT-5814E

• S95341 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System B Belt Fil Sup Rail Lube DG-FIT-5814F

• S95342 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System B Belt Filter Cloth Wash Dfit-5814G

• S95343 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System B No. 1 Filtrate Pump DG-FIT-5815A

• S95344 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System B No. 2 Filtrate Pump DG-FIT-5815B

• S95345 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System B Vacuum Pump Water DG-FIT-5818





• S95346 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System B Recirculation Pump DG-FIT-5819

• S95347 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A Belt Filter Drive Cloth Change DG-HS-5804A

• S95348 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A Belt Filter Drive Motor Start DG-HS-5804B

• S95349 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A Belt Filter Drive Motor Stop DG-HS-5804C

• S95350 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Dw Sys A Belt Filter Dr Motor Faster Running DG-HS-5804D

• S95351 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Dw Sys A Belt Filter Dr Motor Slower Running DG-HS-5804E

• S95352 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Dw Sys B Belt Filter Dr Cloth Change DG-HS-5814A

• S95353 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Dw Sys B Belt Filter Dr Motor Start DG-HS-5814B

• S95354 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Dw Sys B Belt Filter Dr Motor Start DG-HS-5814C

• S95355 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Dw Sys B Belt Filter Dr Motor Faster Running DG-HS-5814D

• S95356 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Dw Sys B Belt Filter Dr Motor Slower Running DG-HS-5814E





• S95357 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Rail Car Loading Flop Gate No. Fg3 DG-HV-5865

• S95358 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Rail Car Loading Flop Gate No. Fg3 DG-HV-5866A

• S95359 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Rail Car Loading Hopper Isolation Valve DG-HV-5866B

• S95360 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Rail Car Loading Tc1 Traversing Cylinder DG-HV-5867

• S95361 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Gypsum Wash Water Storage Tank DG-LIT-5801/DG-LV-5801

• S95362 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A Belt Filter Cake Thickness DG-LIT-5804

• S95363 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A Belt Filter Cake Thickness DG-LIT-5805

• S95364 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A Water Collection Tank DG-LIT-5806

• S95365 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A Cloth Wash Recovery Tank DG-LIT-5807

• S95366 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A Cloth Wash Recovery Tank DG-LIT-5814

• S95367 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System B No.1 Filtrate Receiver DG-LIT-5815a





• S95368 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System B Water Collection Tank DG-LIT-5816

• S95369 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System B Cloth Wash Water Recovery Tank DG-LIT-5817

• S95370 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG2A Gypsum Storage Level DG-LIT-5849

• S95371 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG2B Gypsum Storage Level DG-LIT-5850

• S95372 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Flop Gate No. Fg1 Plugged Chute Detector DG-LSH-5841

• S95373 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Flop Gate No. Fg2 Plugged Chute Detector DG-LSH-5842

• S95374 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1A Plugged Chute Detector DG-LSH-5843

• S95375 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1B Plugged Chute Detector DG-LSH-5844

• S95376 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG2A Plugged Chute Detector DG-LSH-5846

• S95377 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG2B Plugged Chute Detector DG-LSH-5847

• S95378 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG3 Plugged Chute Detector DG-LSH-5851





• S95379 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG4 Plugged Chute Detector DG-LSH-5859

• S95380 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Rail Car Loading Hopper Plugged Chute Detector DG-LSH-5866

• S95381 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Gypsum Wash Water Storage Tank DG-LIT-5801/ DG-LV-5809

• S95382 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1A Hand-Off-Auto DG-M-5843

• S95383 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1B Hand-Off-Auto DG-M-5844

• S95384 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG2A Hand-Off-Auto DG-M-5846

• S95385 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG2B Hand-Off-Auto DG-M-5847

• S95394 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG3 Hand-Off-Auto DG-M-5851

• S95395 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG4 Hand-Off-Auto DG-M-5859

• S95396 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet No.1 Gypsum Wash Water Distribution Pump DG-PIT-5802A

• S95397 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet No.2 Gypsum Wash Water Distribution Pump DG-PIT-5802B





• S95398 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet No.3 Gypsum Wash Water Distribution Pump DG-PIT-5802C

• S95399 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Dewatering System A Slurry Feed Hydrocyclone DG-PIT-5804

• S95400 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A Slurry Feed Hydrocyclone DG-PIT-5804AB

• S95401 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A Belt Filter Air Pressure DG-PIT-5804B

• S95402 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A Belt Filter Cloth Wash DG-PIT-5804C

• S95403 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A No.1 Filtrate Pump DG-PIT-5805A

• S95404 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A No.1 Filtrate Receiver DG-PIT-5805B

• S95405 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System B Slurry Feed Hydrocyclone DG-PIT-5814AA

• S95406 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System B Slurry Feed Hydrocyclone DG-PIT-5814AB

• S95407 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System B Belt Filter Air Pressure DG-PIT-5814B

• S95408 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System B Belt Filter Cloth Wash DG-PIT-5814C





• S95409 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System B No.1 & 2 Filtrate Pumps DG-PIT-5815a

• S95410 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System B No.1 Filtrate Receiver DG-PIT-5815B

• S95411 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Air Pressure DG-PIT-5820

• S95412 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet No.1 Automatic Backwash Strainer Dg-Pdit-5800A

• S95413 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet No.2 Automatic Backwash Strainer Dg-Pdit-5800B

• S95414 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW Systema Belt Filter Drive Speed Indication DG-SI-5804

• S95415 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW Systemb Belt Filter Drive Speed Indication DG-SI-5814

• S95416 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW Systemb Belt Filter Cloth DG-SSL-5814

• S95417 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1A Zero Speed Switch DG-SSL-5843

• S95418 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1B Zero Speed Switch DG-SSL-5844

• S95419 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG2A Zero Speed Switch DG-SSL-5846







• S95422 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Loadout Hopper LH1 Belt Feeder No.1 Zero Speed Switch

• S95423 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG4 Zero Speed Switch DG-SSL-5859

• S95424 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Torque DW System A Belt Filter Drive DG-WSH-5804

• S95425 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Torque DW System B Belt Filter Drive DG-WSH-5814

• S95426 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor BCG4 Belt Scale DG-WT-5862

• S95427 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor BCG4 Belt Scale DG-WT-5862

• S95428 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A Belt Filter Drive Motor Running DG-XS-5804A

• S95429 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System A Belt Filter Drive Motor Fault DG-XS-5804B

• S95430 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System B Belt Filter Drive Motor Running DG-XS-5814A





• S95431 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet DW System B Belt Filter Drive Motor Fault DG-XS-581B

• S95432 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Air Dryer No. 1 Common Alarm DG-XS-5820A

• S95433 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Air Dryer No. 2 Common Alarm DG-XS-5820b

• S95434 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet No.1 Automatic Backwash Strainer DG-XV-5800A

• S95435 1 0 FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet No.2 Automatic Backwash Strainer DG-XV-5800b

• S95436 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Dewatering System A Hydrocyclone Supply DG-XV-5804

• S95437 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Dewatering System A Vacuum Pump Water DG-XV-5808

• S95438 1 B FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Dewatering System B Hydrocyclone Supply DG-XV-5814

• S95439 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Dewatering System B Vacuum Pump Water DG-XV-5818

• S95440 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1A Belt Overtravel DG-ZS-5843

• S95441 1 A FGD - Scrubber - Gypsum Dewatering Project-Controls-Loop Sheet Conveyor No. BCG1B Belt Overtravel DG-ZS-5844







• S95444 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG3 Belt Overtravel DG-ZS-5851

• S95445 1 0 FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Loadout Hopper LH1 Belt Position DG-ZS-5856A

• S95446 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG4 Belt Overtravel DG-ZS-5859

• S95447 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conv. No. BCG2A Tripper Fwd Limit Switch DG-ZSF-5849B

• S95448 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conv. No. BCG2A Tripper Fwd Limit Switch DG-ZSF-5850b

• S95449 1 B FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Position 4 DW System A Belt Filter Cloth DG-ZSH-5804D

• S95450 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Position 4 DW System A Belt Filter Cloth DG-ZSH-5814D

• S95451 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Dewatering System A Belt Filter Cloth DG-ZSL-5804

• S95452 1 B FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Dewatering System A Belt Filter Cloth DG-ZSL-5804A





• S95453 1 B FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Dewatering System A Belt Filter Cloth DG-ZSL-5804B

• S95454 1 B FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Position 3 Dw Sys A Belt Fltr Vac Wear Belt DG-ZSL-5804C

• S95455 1 B FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Position 4 DW System A Belt Filter Cloth DG-ZSL-5804D

• S95456 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Speed DW System B Belt Filter Cloth DG-ZSL-5814

• S95457 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Position 1 DW System B Belt Filter Cloth DG-ZSL-5814A

• S95458 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Position 2 DW System B Belt Filter Cloth DG-ZSL-5814B

• S95459 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Position 3 DW System B Belt Fltr Vac Wear Belt

• S95460 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Position 4 DW System B Belt Filter Cloth DG-ZSL-5814D

• S95461 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG1A Belt Position DG-ZSL-5843A

• S95462 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG1A Belt Position DG-ZSL-5843B

• S95463 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG1B Belt Position DG-ZSL-5844A





• S95464 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG1B Belt Position DG-ZSL-5844B

• S95465 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG2A Belt Position DG-ZSL-5846A

• S95466 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG2A Belt Position DG-ZSL-5846B


• S95468 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG2B Belt Position DG-ZSL-5847B


• S95470 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG3 Belt Position DG-ZSL-5851B

• S95471 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG3 E-Stop DG-ZSL-5851C

• S95472 1 0 FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Loadout Hopper LH1 Belt Position DG-ZSL-5853

• S95473 1 0 FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Loadout Hopper LH2 Belt Position DG-ZSL-5856

• S95474 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG4 Belt Position DG-ZSL-5859A





• S95475 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG4 Belt Position DG-ZSL-5859B

• S95476 1 B FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Position 1 DW System A Belt Filter Cloth DG-ZSR-5804A

• S95477 1 B FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Position 2 DW System A Belt Filter Cloth DG-ZSR-5804B

• S95478 1 B FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Position 3 Dw Sys A Belt Fltr Vac Wear Belt DG-ZSR-5804C

• S95479 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Position 1 DW System B Belt Filter Cloth DG-ZSR-5814A

• S95480 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Position 2 DW System B Belt Filter Cloth DG-ZSR-5814B

• S95481 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Position 2 DW System B Belt Filter Cloth DG-ZSR-5814C

• S95482 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG1A Belt Position DG-ZSR-5843a

• S95483 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG1B Belt Position DG-ZSR-5844A

• S95484 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG2A Belt Position DG-ZSR-5846A

• S95485 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG2A Belt Position DG-ZSR-5846B





• S95486 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG2A Belt Position DG-ZSR-5847A

• S95487 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG2B Belt Position DG-ZSR-5847B

• S95488 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conv. No. BCG2A Tripper Rev Limit Switch DG-ZSR-5849B

• S95489 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Rev Limit Switch Belt Position DG-ZSR-5850B

• S95490 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG3 Belt Position DG-ZSR-5851A

• S95491 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG3 Belt Position DG-ZSR-5851B

• S95492 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG3 Belt Position DG-ZSR-5851C

• S95493 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG4 Belt Position DG-ZSR-5859A

• S95494 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG4 Belt Position DG-ZSR-5859B

• S95495 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Rail Car Loading Position Sensor DG-ZY-5865A





• S95496 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Rail Car Loading Position Sensor DG-ZY-5865B

• S95497 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG1B Belt Position DG-ZSR-5844B

• S95498 1 A FGD - Scrubber - Gypsum Dewatering Project -Controls-Loop Sheet Conveyor No. BCG1A Belt Position DG-ZSR-5843B

Vendor Drawings • S83316 Performance Data 3-Phase Induction Motor

• S80831 Outline Drawings 3-Phase Induction Motor




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Procedure Revision Summary

Revision Document Change:

0

Initial issue of document.

1

2

NOTE: See Revision Bars for specific changes within document.

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