re: cbrm t63-2020 disinfection improvements at four … · 2020. 12. 11. · a community of...

A Community of Communities

320 Esplanade

Sydney, Nova Scotia B1P 7B9

Tel: 902-563-5015 Fax: 902-539-9964

E-mail: [email protected]

December 11, 2020

ADDENDUM #4

RE: CBRM_T63-2020 DISINFECTION IMPROVEMENTS AT FOUR WASTEWATER LAGOONS

To Whom It May Concern: With regards to the above noted tender, please see the attached documents.

If you have any questions, please contact our office at [email protected].

Sincerely, Donna M. Murphy Donna M. Murphy, Procurement Officer

mailto:[email protected]

C:\pw working directory\projects 2020\52tgb\dms35354\addendum #4.doc

CAPE BRETON REGIONAL MUNICIPALITYDisinfection Improvements at Four Wastewater Lagoons

Tender CBRM_T63-2020

Addendum No. 4

CAPE BRETON REGIONAL MUNICIPALITY 320 EsplanadeSydney, NS

B1P 7B9

Dated: Dec. 11, 2020Sydney, N.S.

1. Precedence: This Addendum forms an integral part of the Bid Documentscovering all aspects of this Project and is to be read in conjunction therewith. Should points arise which are at variance, this Addendum shall takeprecedence.

2. Purpose: The Purpose of this Addendum is to add to, clarify and/or toamend the Quotation Documents.

3. Content: The Addendum comprises 8 pages of text (including this page) andattachments.

4. Acknowledge this Addendum in Section 00 41 43 – Tender Form.

Disinfection Improvements at Addendum No. 4 Page 2 of 8Four Wastewater LagoonsTender CBRM_T63-2020 Dec. 11, 2020


SPECIFICATIONS

SECTION 00 21 00 – INFORMATION TO TENDERS

.1 Add the following clause:

20. Completion Date

.1 It is expected that the work will be substantially completed by June 4, 2021.

SECTION 00 41 43 – TENDER FORM

.1 Modify the following clause:

5. COMPLETION TIME

.1 Tenderer agrees to substantially complete the work within ………. weeks of writtennotification of award. As a condition of this contract, the work must be substantiallycompleted by June 4, 2021.

SECTION 00 60 00 – SUPPLEMENTARY SPECIFICATIONS

.1 Section 01 10 00 – GENERAL REQUIREMENTS

.1 Revise SUBSECTION 3 – SCHEDULING AND COORDINATION as follows:

.1 CBRM will be responsible for temporarily diverting the flow at all four lagoons whenthe general contractor is making connections to the existing chlorination structures atTower Rd, Centreville Rd, and Meadowbrook and also the manhole connections atSouthwest Brook. The flow will be diverted for a max of nine consecutive days ateach of Tower Rd, Centreville Rd and Meadowbrook and five consecutive days atSouthwest Brook. Flow can only be diverted on dry days with no wet weatherforecasted. This work must be coordinated with CBRM five days prior to the flowbeing diverted.

.2 Section 10 10 30 – CONTROL SYSTEM

.1 Add the following clause:

.1 1.10 SCREEN DEVELOPEMENT



.1 CBRM utilizes VTS as its monitoring and control software.

.2 Symbolic representations for devices will not be used except wherespecifically approved by the Owner.

.3 Devices shall be animated (where possible) to show them as running andshall change colour to indicate status where deemed feasible and desirable bythe Owner.

.4 Microsoft Windows compliant pop-up windows shall be used to displayadditional information and/or to allow operators to select set points andoperational changes where deemed feasible and desirable by the Owner.

.5 All screens are to be developed at 1040 x 760 and shall incorporateexclusively scalable true-type fonts for all text and numbers displayed.

.6 Any and all information may, at the Owner's discretion, be displayed onmore than one screen.

.7 Any and all information may, at the Owner's discretion, be simultaneouslydisplayed in more than one format (i.e., bar chart and analog value) asavailable through the Control System package.

.8 Screens shall be configured such that analog and digital values return to avalue of invalid upon failure of communications with the PLC.

.9 Critical dialogue box overlay pop-up windows shall be used to allowoperators to make changes to devices shown on the underlying screen. Thepop-up box shall support data entry, pick boxes, and dynamic scroll bars forselection of analog input values.

.10 The system shall define maximum and minimum allowable values foranalog operator input as specified by the Owner in consultation with theSystem Integrator.

.11 All screen development shall be fully windows compliant and make optimaluse of pop up windows, scroll bars, and push buttons.

.12 It shall be possible to perform all control monitoring from the reportingstation and the base station (Battery Point) without an operator beingrequired to use the keyboard. All control shall be possible with a pointingdevice such as a mouse.

.13 All field devices for which the display of run-times is deemed to bedesirable by the Owner shall display run-times on the start/stop or sequencingpop-up control window used to control the device.



.14 A complete list of screens describing the data to be displayed on each, thededicated trend charts to be displayed, the bar graphs to be displayed, theanalog gauges to be simulated, and the monitoring and control to beprovided shall be developed by the System Integrator in associationwith and with the approval of the Owner. As a minimum, the followingscreens are to be provided:.1 Station Overview c/w all analytical readings, levels, system status,

alarms..2 Alarm Control..3 Trend Screen.”

.3 Section 26 32 13 - POWER GENERATION DIESEL

.1 Clarification: These generators are in remote locations and are small, however it is arequirement of this contract for the enclosures to contain at least one light, GFCI receptacle,battery charger, block heater and heater to maintain the enclosure temp. It is understood thatto maintain enclosure heater, a fan and motorized damper is required, if proposedsystem can maintain enclosure temperature via other means, it will be considered.

.4 Section 26 36 23 – AUTOMATIC LOAD TRANSFER EQUIPMENT

.1 Delete the following:

.1 Requirement for Reverse Power Basler Relay.

.2 Paras 2.2.2 and 2.7.13 from specification.

.5 Section 44 44 73 – ULTRAVIOLET DISINFECTION

.1 Revise Clause 2.1.4 with the following:

.1 All parts in contact with the effluent shall be: Type 304 stainless steel or anodizedaluminum inlet boxes, outlet boxes and channels. Type 316 stainless steel moduleframes. All other metal components shall be corrosion resistant Type 304 stainless steelor anodized aluminum. All components exposed to UV shall be UV resistant.

.2 Revise Clause 2.6.3.4.1 with the following:

.1 4170mm long, 2260mm wide and 945mm high.

.3 Revise Clause 2.8.1 with the following:



.1 All electrical equipment, with the exception of the main power supply shall be factorywired and provided by the manufacturer. The power supply shall be, 120V, 1ph, 2 wire(plus ground), 60Hz.

.4 Revise Clause 2.11 with the following:

.1 Site 1: Tower Road

.1 TrojanUV 3300K-PTP, 2 channels in series

.2 Site 2: Centreville


.3 Site 3: Meadowbrook


.3 Site 4: Southwest Brook

.1 TrojanUV 3001M-PTP, 2 channels in series

.5 Add the following to clause 3.4.6:

.1 All cost and expenses associated with the performance testing are the responsibilityof the contractor.

DRAWINGS

DRAWING –P1

.1 TOWER ROAD & CENTREVILLE ROAD/MEADOWBROOK UV CHAMBER ANDPIPING DEATILS,

.1 Sub clause .1.2.1 Plug Valves:

.1 Figure B517 ECO-Centric plug valves are an approved alternate for within (exposedservice) the UV chambers and repurposed chlorination chambers.



.2 Details A & C - CHLORINATION CHAMBER PIPING DETAILS,

.1 Revise piping elevation as follows:

.1 The existing outlet pipe at Meadowbrook and Tower Rd is at the elevation shown ondetail below. All pipe sizes remain as indicated on P1.

DRAWING –P3

.1 Access Hatch : Note 1

.1 US FAB A-Series access hatch and safety grate is an approved alternate.

DRAWING –S1

.1 Concrete Note 12. (Addendum No. 1)

.1 Kryton T1 is an approved alternate.



DRAWING – S2

.1 Add the following note to STEEL NOTES:

.1 15. Entire stair assembly and all handrails and associated accessories to be hot-dipped-galvanized. Touch up with cold galvanizing at completion of erection.

DRAWING - E1

.1 Modify as the following:

.1 Southwest Brook Panel Schedule-Replace 15A-1P circuit breaker for circuit No. 7 and 9 with 20A-1P circuit breakers.

.2 Southwest Brook Panel Schedule- Add two 20A-1P circuit breakersto circuit No. 27 and circuit No. 29.

DRAWING – E4

.1 SOUTHWEST BROOK – ELECTRICAL SITE PLAN

.1 Although not shown, 6 bollards are required around the generator and location will beconfirmed in the field during construction.

.2 Modify as the following:

.1 Add one run of 2C/#12AWG from Panel “E” and one CSA 5-20R GFCI receptacle toSB-1.

.2 Add one run of 2C/#12AWG from Panel “E” and one CSA 5-20R GFCI receptacle toSB-2.

.3 Change SB-1 electrical topology from ten UV modules powered from five CSA 5-20R GFCI receptacles on one 20A-1P circuit breaker to five UV modules poweredfrom three CSA 5-20R GFCI receptacles, for a total of two 20A-1P circuit breakerspowering six CSA 5-20R GFCI receptacles for ten UV system modules. Addterminal blocks in SB-1 as required.

.4 Change SB-2 electrical topology from ten UV modules powered from five CSA 5-20R GFCI receptacles on one 20A-1P circuit breaker to five UV modules poweredfrom three CSA 5-20R GFCI receptacles, for a total of two 20A-1P circuit breakers



powering six CSA 5-20R GFCI receptacles for ten UV system modules. Addterminal blocks in SB-2 as required.

DRAWING – E8

.1 MEADOWBROOK LIFT STATION – INTERCONNECTION DIAGRAM

.1 The existing PLC in the EX. (existing) RTU PANEL is an Allen Bradley MicroLogix1100.

DRAWING – E9

.1 SOUTHWEST BROOK – INTERCONNECTION DIAGRAM

.1 The existing PLC in the EX. (existing) RTU PANEL is an Allen Bradley MicroLogix1400.

*****End Addendum No. 4*****


320 Esplanade


Tel: 902-563-5015 Fax: 902-539-9964


December 7, 2020

ADDENDUM #3


To Whom It May Concern: With regards to the above noted tender, please see the attached documents.


Sincerely, Donna M. Murphy Donna M. Murphy, Procurement Officer





Addendum No. 3


B1P 7B9






Disinfection Improvements at Addendum No. 3 Page 2of 2Four Wastewater LagoonsTender CBRM_T63-2020 Dec. 7, 2020


CLARIFICATION

The extension and provision of power to the Centreville, Meadowbrook, and Tower Rd sites will be theresponsibility of CBRM and is not to be included in costs for electrical contractor. There will be coordination withCBRM and NSP required in locating Riser pole on site, however any costs for this work is by Owner. Ifcontractor is required to provide services for this work, this will be covered under separate contract or changeorder to this contract.

SPECIFICATIONS

.1 Reference Specification Section 26 05 01 Common Work Results – Electrical

.1 Delete para 1.11.3 from this contract as per clarification above.

DRAWINGS

.1 Reference Drawing E2, General Notes. Delete notes 6 and 7 and insert the following as note 6.

.1 Electrical contractor is to coordinate with CBRM and Owner with respect to extension of power to each of the required sites. CBRM will be responsible for extension of power to sites and termination to a riser pole as shown in an approximate location on our drawings. Any costs associated with extending power to the sites that do not currently have power will be by Owner. Contractor is not required to allow for these costs, unless asked by Owner via separate contract.

.2 Reference Drawing E3, General Notes. Delete notes 6 and 7 and insert the following as note 6.

.1 Electrical contractor is to coordinate with CBRM and Owner with respect to extension of power to each of the required sites. CBRM will be responsible for extension of power to sites and termination to a riser pole as shown in an approximate location on our drawings. Any costs associated with extending power to the sites that do not currently have power will be by Owner. Contractor is not required to allow for these costs, unless asked by Owner via separate contract.



320 Esplanade


Tel: 902-563-5015 Fax: 902-539-9964


December 4, 2020

ADDENDUM #2


To Whom It May Concern: With regards to the above noted tender, please see the attached specifications/information listed below.


Sincerely, Daniel Colbourne Daniel Colbourne, Procurement Officer/Financial Services Clerk


C:\pw working directory\projects 2020\54smc\dms67449\T63-2020 - Addendum #2.doc

CAPE BRETON REGIONAL MUNICIPALITY

Disinfection Improvements at Four Wastewater Lagoons

Tender CBRM_T63-2020 Addendum No. 2 CAPE BRETON REGIONAL MUNICIPALITY 320 Esplanade Sydney, NS B1P 7B9 Dated: Dec. 4, 2020 Sydney, N.S. 1. Precedence: This Addendum forms an integral part of the Bid Documents

covering all aspects of this Project and is to be read in conjunction therewith. Should points arise which are at variance, this Addendum shall take precedence.

2. Purpose: The Purpose of this Addendum is to add to, clarify and/or to

amend the Quotation Documents. 3. Content: The Addendum comprises 27 pages of text (including this page)

and attachments. 4. Acknowledge this Addendum in Section 00 41 43 – Tender Form.

Disinfection Improvements at Addendum No. 2 Page 2 of 27 Four Wastewater Lagoons Tender CBRM_T63-2020 Dec. 4, 2020


SPECIFICATIONS SECTION 00 60 00 – SUPPLEMENTARY SPECIFICATIONS .1 Section 29 10 01 – Enclosures .1 Remove Part 3 - Execution .2 Add the attached new specification sections:

10 10 20 – Instrumentation 10 10 30 – Control System 10 10 31 – Control System Standards 10 10 32 – IO Layout Standards 29 30 11 – Miscellaneous Panel Devices

DRAWINGS DRAWING –E8 1. Replace Note 9 for the Centerville/Meadowbrook/Tower Road – Interconnection Diagram with the

following: “9. All SCADA and PLC Panel Modifications including programming is the responsibility of the

Contractor. Coordinate with Owner to facilitate connection between the SCADA RTU Panel and the UHF Radio Network. Supply and install required materials to facilitate proper communications with the Municipalities existing SCADA system.”



2. Replace the Centerville/Meadowbrook/Tower Road – Interconnection Diagram with the following:

3. Replace Note 7 for the Meadowbrook Lift Station – Interconnection Diagram with the following:

“7. Contractor to supply and install all required hardware (I/O Modules, Terminal Blocks, Relays, Contactors, Control Wiring, etc.) in the exiting RTU panel to ensure all new I/O’s can be captured and

relayed as required to the Municipalities existing SCADA system.” 4. Remove Note 8 for the Meadowbrook Lift Station – Interconnection Diagram. 5. Replace the Meadowbrook Lift Station – Interconnection Diagram with the following:



DRAWING –E9 1. Add Note 9 for the Centerville/Meadowbrook/Tower Road – Interconnection Diagram stating the

following:

“9. Contractor to supply and install all required hardware (I/O Modules, Terminal Blocks, Relays, Contactors, Control Wiring, etc.) in the exiting RTU panel to ensure all new I/O’s can be captured and

relayed as required to the Municipalities existing SCADA system.” 2. Replace the Southwest Brook – Interconnection Diagram with the following:


CAPE BRETON REGIONAL MUNICIPALITY SECTION 10 10 20 DISINFECTION IMPROVEMENTS INSTRUMENTATION PAGE 1 FOUR WASTEWATER LAGOONS DECEMBER 2020

PART 1 GENERAL

1.1 GENERAL REQUIREMENTS

.1 All instrumentation components, items, equipment or systems as described in this Section shall refer to the supply, installation, testing, commissioning, and satisfactory operation of the instrumentation and control system and/or component specified herein, and or as detailed on the Drawings.

.2 All work performed under this Section shall be by skilled instrumentation technicians and in strict accordance with the manufacturer's recommendations, good engineering practices and in accordance with standards established by the International Society of Automation (ISA).

1.2 SCOPE OF WORK

.1 This section pertains to new instrumentation and existing instrumentation that is part of the intended function of the project.

.2 The work specified under this Section includes, but is not limited to, the following:

.1 Supply, assembly, installation, calibration, testing, commissioning, and satisfactory startup of all instrumentation equipment as specified on all Instrument Data Sheets, Contract Drawings and as specified herein.

.2 Assembly, installation, calibration, testing, commissioning, and satisfactory startup of instrumentation.

.3 Adjustments, calibration, testing, commissioning and satisfactory startup of all instrumentation and control components associated with all valves and package systems specified under equipment packages. All work required to permit a connection between the Base Station (Battery Point) and each of the reporting stations included in this scope of work, and incorporate into Owner’s SCADA. This integration includes screens integration (HMI) to be monitored/controlled as required from the municipalities Base Station.

.4 Start up assistance as may be necessary to ensure the instrumentation systems function as specified and to train Owner's personnel on calibration procedures and operating procedures.

1.3 ELECTRICAL REQUIREMENTS

.1 The work shall be carried out in accordance with the latest regulations of the Electrical Safety Code and all applicable Provincial, Municipal Codes and Regulations. In no instance, however, shall the standards established by the Drawings and Specifications be reduced by any of the Codes referred to above.

1.4 STANDARDS

.1 All equipment shall comply with the latest edition of applicable codes and regulations including but not limited to the following:

.1 Canadian Standards Association (CSA).

.2 National Electrical Manufacturers Association (NEMA).


.3 Electro Federation Canada (EFC).

1.5 SHOP DRAWINGS

.1 Submit detailed Shop Drawings to Engineer.

.2 Catalogues, manuals or price lists are not acceptable as Shop Drawings, but properly marked up cuts from manufacturer's catalogues may be used to supplement information contained in the Shop Drawings.

.3 Logic Diagrams, Control Diagrams and Instrument Loop Diagrams form part of the Shop Drawings. All components shall be tagged and listed. All logic shall be cross referenced and documented. All symbols shall follow ISA format with all non standard symbols identified in a key legend.

1.6 OPERATION AND MAINTENANCE DATA

.1 Provide operations and maintenance data to incorporate into manual.

1.7 LOCATION OF EQUIPMENT

.1 The Contractor shall alter the location of equipment, including conduits and wiring, if directed by the Engineer. Relocation shall be at no extra charge, provided that the distance does not exceed 3 metres and the request for relocation is made before the equipment is installed.

.2 Equipment such as panels, instruments, switches, mounting hardware, etc. are shown in a general location on the Contract Drawings unless otherwise specified. The Contractor shall mount equipment within 600mm in plan, of the area shown or as directed by the Engineer to suit actual arrangements and interferences.

.3 Contractor is responsible for coordinating between the trades to prevent conflicts in location of equipment.

.4 Displays, gauges, readouts and indicators unless otherwise specified shall be mounted at eye level and in accordance with good engineering practices and/or as directed by the Engineer.

.5 All hand switches shall be wall mounted or pedestal mounted on 75mm channel 1 metre above floor level or as shown otherwise.

.6 Electrical and /or communication cables and conduits shall be installed as to minimize interferences with equipment and to allow easy access. Maintain required separation between communication, control, instrumentation and power cables as required by the Canadian Electrical Code. Placement of conduits on flooring is not permitted without the permission of the Engineer.

1.8 IDENTIFICATION

.1 Provide identification of all instrumentation components and systems as follows:


.1 Wiring with heat shrink pre marked wire markers on each end of conductor bearing the same identification tag.

.2 Terminal blocks using pre marked snap in markers.

.3 Relay using lamicoid nameplates with white letters 6 mm high on black background.

.4 Control panels using lamicoid nameplates with white letters 12 mm high on black background.

.5 Instruments using 316 SS engraved nameplates permanently secured.

.6 Switches using lamicoid nameplates with white letters 6 mm high (unless otherwise specified) on black background.

.2 All nameplates and identification shall be installed after painting is completed.

.3 Manufacturers' nameplates shall be clean and legible and shall NOT be painted.

1.9 QUALITY ASSURANCE

.1 The equipment and material covered by these specifications shall be standard products of proven reliability and manufactured by manufacturers regularly engaged in the production of such equipment.

PART 2 PRODUCTS

2.1 INSTRUMENTATION – GENERAL

.1 All instruments, components and systems shall be as specified herein and shall be considered as part of this Contract and unless otherwise specified, shall be supplied, assembled, installed, calibrated, tested, and started at no additional cost.

.2 Contractor is responsible for understanding the functional purpose of each instrument for this project. Supply and install of all components required to enable the instrument to perform its intended function, safely and under all operating conditions without undue vibration, heat, wear, noise, or other problems whether specified or not, are the responsibility of the contractor, at no cost to the owner. Equipment subject to wear, corrosion, or other deterioration or parts that require adjustment, inspection, or repair must be accessible and able to be maintained easily.

.3 Equipment supplied shall meet all requirements of specifications and shall be a complete component of the instrumentation system. It is the intent of the specifications to define service, performance and optional accessories. Any items required for the proper operation of equipment and not included in the specification shall be provided at no additional cost.

.4 All equipment including instrumentation and controls must be certified by CSA or an agency recognized by the provincial Electrical Inspection Department. If there is no alternative for supplying equipment which is not certified, approval from the provincial Electrical Inspection Department is required. Costs associated with this will be included in the contract price.


.5 Instrumentation and controls enclosure rating shall be NEMA 4X (IP66), and instruments must be EMI and RFI protected.

.6 Any instrument which requires intrinsically safe wiring in a hazardous area shall be provided with intrinsically safe barriers as required to meet the appropriate hazardous classification.

.7 Instrumentation and controls power supply shall be 120 VAC, 60 Hz.

.8 All equipment must be rated for their appropriate hazardous area classification.

2.2 PRESSURE GAUGES

.1 Install as required in locations as indicated on the drawings.

.2 Shall be liquid filled 316 SS bourdon tube type with 88 mm dial face enclosed by cast aluminum case and clear face cover.

.3 Shall be diaphragm type

.4 Shall be installed complete with brass snubber and isolation ball valve.

.5 Gauges shall be calibrated in kPa and psi.

.6 Shall be accurate to +/- 3% at maximum reading.

.7 Pressure range of 0 to 50 psi.

.8 Acceptable manufacturers:

.1 Ametek

.2 Ashcroft

2.3 ULTRASONIC LEVEL CONTROLLER

.1 Supply and install a liquid level ultrasonic transducer for measure of the liquid level as noted on Drawings. This is the primary liquid level control device.

.1 Level transmitter shall be 120V power supply, with level transducer power supply from the transmitter.

.2 Output: 4-20 mA signal.

.3 Approvals: CSA, rated for Zone 1 Hazardous Classified Area.

.4 Installation: Locate and install the device in a manner that will optimize performance across desired measuring range without interference from other objects or flows in the structure.

.5 Manufacturer: Siemens Multi-Ranger 100, or approved equal.

2.4 MAGNETIC FLOWMETERS

.1 Location: As noted on drawings


.2 Type: 4-wire, 4 to 20 mA dc output Magnetic Flowmeter assembly c/w remote mount signal converter/transmitter.

.3 Accuracy: ±0.20% of measured variable.

.4 Flow tube Dimensions: Face to face spacing to conform to recommended flowtube dimensions contained in ISO/DIS 13359.

.5 Flow tube calibration: Wet calibrated to verify specified accuracy at a facilities accredited to the EN 45001 standards.

.6 Process Fluid Conductivity: Flow meter minimum process fluid conductivity of 5ȝS/cm.

.7 Liner material: Hard Rubber.

.8 Flow tube material: AISI Type 304 Stainless Steel Tube.

.9 End Connections: ANSI Class 150, Carbon Steel Flange.

.10 Grounding Electrodes: Built-in grounding electrodes (hastelloy or SS) as standard for use in metallic, nonmetallic, or lined pipelines without the need for separate grounding rings.

.11 The signal converter (transmitter) shall be wall mount, 120 Vac powered with 4-20 mA output. The tube will be DC powered from the signal converter.

.12 Transmitter Measurements: BIDIRECTIONAL FLOW ,“+” or “-” rate in engineering

units“+” or “-” rate in % of URV TOTALIZATION“+” or “-” bidirectional total, 8 digits

Net total, 8 digits Net inventory total, 10 digits.

.13 Power Consumption: Less than 24 W at reference voltage and frequency.

.14 Output Damping: Field-programmable from 0.1 to 49.9 seconds.

.15 Diagnostics and Alarms: Internal diagnostics and configurable alarm functions (low flow, high flow, and high totals). Automatically indicate any existing diagnostic or alarm condition.

.16 Configurable relay outputs to activate on an alarm or diagnostic condition to provide remote indication of such events. Configurable analog output can for upscale, downscale or no action failsafe.

.17 NEMA 4 enclosure for converter and IP68 for flow tube.

.18 Provisions for four standard conduit/cable access holes (non threaded holes) sized to accept 1/2 NPS or M20 fittings.

.19 Installation shall be in accordance with manufacturer’s requirements including upstream

and downstream clearances.

.20 Manufacturer shall provide sufficient cable to permit connection of the measuring device to the controller based on locations shown on drawings.


.21 Control cabling: As required to field fit instrument as shown on the drawings.

.22 Acceptable Manufacturer:

.1 Siemens

.2 ABB Water master Series

.3 KROHNE

PART 3 EXECUTION

3.1 GENERAL INSTRUCTIONS

.1 The Contractor shall be responsible for verifying all measurements and details of the existing equipment and structures necessary for the proper fitting and connecting of the new work to it, before proceeding with the work. Any discrepancies between the Drawings and work shall be referred to the Engineer. The Contractor is responsible for the proper fitting of the work and shall make such changes as necessary and directed by the Engineer without additional cost to the Contract.

.2 The drawings indicated general arrangement of the instruments and controls. Exact locations, distances, heights will be governed by the actual field conditions. Field verify all final locations of instruments, controls and dimensions.

.3 Fabricate, purchase, supply, and erect all support brackets and mounting stands for the instruments as required. Coordinate with instrument vendor.

3.2 INSTRUMENTATION

.1 For each device follow the manufacturers recommended installation procedures for the process and electrical connections.

.2 Ensure that each device is calibrated to its specified range and according to industry standards. Provide to the Engineer a copy of calibration reports for each device.

3.3 CABLES AND WIRING

.1 Unless indicated otherwise, all wiring and cables shall be installed in conduit, wireways, or in underground ducts in accordance with the electrical specifications and drawings.

.2 Branch circuits have been indicated on the Drawings for all lighting, power and other outlets. Identify the circuits in the lighting panels and power panels and at points of termination with cable markers. If the wiring is installed with a different circuit, revise the drawings to show the new circuit number which has been given to the respective lighting or other appliance circuit.

.3 Shielded cables shall be terminated so that the shield is no more than 25 mm from the connection point. The shield shall be taped to the cable to prevent inadvertent connections.

.4 All Ethernet and data cables shall be in conduit. Maximum number of bends between pulling points is two ninety degree turns over 30 meters. Follow all required manufacturer


installation standards in relations to fill ratios for conduit and raceways. All pairs of the Ethernet cable shall be terminated on a single port and splitting of cable pairs in between different jacks is not allowed

3.4 SYSTEM TESTING AND DEMONSTRATION

.1 The Contractor shall arrange for a qualified manufacturer's representative to inspect, operate, test and adjust equipment. Such testing shall prove the equipment to be in a suitable condition for the service intended.

.2 The above activities shall include, but not be limited to the following (as applicable).

.1 Soundness, i.e., without damaged parts.

.2 Completeness in all respects as specified.

.3 Correctness of setting, alignment and relative arrangement.

.3 Demonstrate to the Engineer’s satisfaction proper operation, calibration, and installation of

all systems (loops, control circuits, monitoring, etc.).

.4 At time of completion, the Contractor is to provide test results as previously described.

.5 The Contractor will inform the Engineer in writing three weeks in advance of his intent to demonstrate completed work. With the written notice, the Contractor shall supply one copy of all Calibration Certificates. Incomplete or missing certificates will result in delay of the system demonstration.

.6 Demonstration of loops, control circuits, etc., is to be done in a logical order (no partial checkouts will be acceptable).

.7 The Contractor will make arrangements at time of system demonstration that all required test equipment (meters, scopes, calibrators, communication equipment, etc.) be present and that competent technician(s) be available on site to assist.

.8 Any failure of individual system components will result in a complete recheck after failure is corrected.

.9 On completion of the testing and examination, the representative shall submit three signed copies of his report showing the results of his inspection, operation, adjustment and testing. The report shall also detail the methods and adjustments made, give quantitative results where applicable, and make recommendations to ensure proper maintenance. A copy of this report shall be included with each copy of the operations and Maintenance Manual.

3.5 TRIAL OPERATION

.1 The Owner has the privilege of the trial operation of systems or parts thereof for the purposes of testing and learning the operational procedures.

.2 Carry out the trial operation as specified by the Owner, at no extra cost.


.3 Carry out the operations only with the express knowledge and under supervision of the Contractor who shall not waive any responsibility because of trial operation.

.4 Trial operation shall not be construed as acceptance by the Owner.

3.6 PROTECTION OF EQUIPMENT

.1 After installation and before operation, protect equipment against weather, dust, dirt and dampness in a manner satisfactory to the Owner and in accordance with the manufacturer's instruction, if any.

***END OF SECTION 10 10 20***

CAPE BRETON REGIONAL MUNICIPALITY SECTION 10 10 30 DISINFECTION IMPROVEMENTS CONTROL SYSTEM PAGE 1 FOUR WASTEWATER LAGOONS DECEMBER 2020

PART 1 GENERAL


.1 This section describes the design, fabrication, supply, delivery, installation, programming, and start-up and commissioning of the process logic control systems including controllers, and control panels as required.

.2 The control system integrator is responsible for understanding the project objectives and ensuring that the intended functions and operations are met.

.3 The system integrator shall converse with Municipality staff and the Engineer to obtain a complete understanding of the control requirements. Failure to do so will not relinquish the integrator of the responsibility to construct, implement and commission a functional control system for the Station(s).

.4 All work performed under this Section, with the exception of 3.3, 3.5, and 3.6 (to be completed by electrical contractor), shall be carried out by a system integrator (SI) with a minimum of 5 years’ experience in the instrumentation and controls field. As well the SI shall have a minimum of 2 years’ experience in the Water/Wastewater industry with direct experience for similar type project work. Proof of such experience may be requested by the consultant at the shop drawing approval stage.

1.2 NEW CONTROL PANEL

.1 It is intended that a new control panel and SCADA system be provided as required per the drawings.

1.3 STANDARDS

.1 All equipment shall comply with the latest edition of applicable codes and regulations including but not limited to following:

.2 Canadian Standards Association (CSA).

.3 National Electrical Manufacturers Association (NEMA).

.4 Electro Federation Canada (EFC).

1.4 ELECTRICAL REQUIREMENTS

.1 The work shall be carried out in accordance with the latest regulations of the Electrical Safety Code and all applicable Provincial, Municipal Codes and Regulations. In no instance, however, shall the standards established by the Drawings and Specifications be reduced by any of the Codes referred to above.

1.5 SHOP DRAWINGS

.1 Submit detailed Shop Drawings for all components.

.2 Catalogues, manuals or price lists are not acceptable as Shop Drawings, but properly


marked up cuts from manufacturer's catalogues may be used to supplement information contained in the Shop Drawings.

.3 Control Diagrams and Instrument Loop Diagrams form part of the Shop Drawings. All components shall be tagged and listed. All logic shall be cross referenced and documented. All symbols shall follow ISA format with all non standard symbols identified in a key legend.

1.6 OPERATION AND MAINTENANCE DATA

.1 Provide operations and maintenance data to incorporate into project operations and maintenance manual.

1.7 QUALITY ASSURANCE

.1 The equipment and material covered by these specifications shall be standard products of proven reliability and manufactured by manufacturers regularly engaged in the production of such equipment.

1.8 PROCESS NARRATIVE

.1 The control system integrator shall finalize the process control narrative (PCN). The PCN is to include the following as a minimum requirement: .1 A description both in layman's terms and technical detail of the project software

and hardware standards. .2 A description both in layman's terms and technical detail of the control logic. .3 A list of all alarms and how each alarm is handled. .4 A list of all setpoints including fixed values in the control logic as well as user

defined setpoints. .5 A list of all digital and analogue IO.

1.9 REFERENCES

.1 This specification is intended to be read in concert with all other project specifications and drawings including but not limited to:

.1 10 10 31 Control System Standards

.2 10 10 32 IO Layout Standards

.3 Tender Drawings

PART 2 PRODUCTS

2.1 GENERAL

.1 The primary items to be incorporated into the control system include, but are not limited to:

.1 Flow meters

.2 UV Monitoring System

.3 Backup Generator System


.4 Ultrasonic Level Measurement (as required)

.5 RTU Panel (PLC)

.6 HMI

.7 SCADA

.2 The control system shall be designed to communicate with all equipment and instrumentation that form the functioning system.

.3 The control system supplier shall confirm the operating, communication, control, and alarm requirements with all equipment and instrumentation.

.4 The control system shall provide, at a minimum, the following features:

.1 Monitoring of flow.

.2 UV System Monitoring Alarm/Fault

.3 Accept and store data from field devices (level transmitters, flow meters).

.4 Critical alarm detection and annunciation as required by the owner.

.5 Monitor and report field conditions.

.6 HMI

.7 Interface station to Control System operator interface and SCADA system.

2.2 CONTROL PANEL AND PROGRAMMABLE LOGIC CONTROLLER (PLC)

.1 The control panel shall include, at a minimum the following:

.1 Programmable logic controller (PLC)

.2 UPS (Uninterruptible Power Supply)

.3 24 VDC power supply device.

.4 Surge Arrestor

.5 Separate 24 VDC instrument loop power supply device

.6 Door mounted Ethernet outlet (Cat 6) as required

.7 Analog signal isolators

.8 Panel mounted interior light

.9 Ethernet Switches with Fibre Optic and RJ45 Ports

.10 Ethernet to Fibre Converter as required

.11 GFI duplex convenience outlet (mounted external to control panel)

.12 Lightning arrestor

.13 Ground fault detector and interrupter

.14 Panel mount HMI

.15 Intrinsically safe relays

.2 The control system must be SCADA-Ready and capable of communicating with the Municipalities SCADA system. This includes all integration works including HMI screens integration with the municipalities existing SCADA system and Base Station (Battery Point).


.3 Communication system to employ UHF radios to link the data from the stations to CBRM SCADA system. Standard of acceptance: Motorolla CDM series.

.4 Re-use existing UHF radios if in good working condition otherwise, supply and install 10 dBi UHF Antenna. Standard of acceptance: Sinclair, Bluewave, Comtelco.

.5 Provide a detailed Bill of Materials, detailed wiring schematics and general component layout drawings as part of Shop Drawing submissions.

.6 Termination drawings shall be in accordance with the I/O requirements.

.7 Provide a control panel in CSA/ULC NEMA 4 enclosure designed for the intended operation. Enclosure shall be 12 gauge steel with oil resistant door gasket. White inside and grey outside.

.8 Supply and install any required CPU, and/or Gateway PLC for communications between customer PLC and Radio system selected to provide a complete and functioning communications system between customer’s equipment and SCADA.

2.3 I/O

.1 The minimum analog inputs shall be as follows:

.1 Flow

.2 Ultrasonic Level (as required)

.2 The minimum digital inputs shall be as follows:

.1 UV System alarms

.2 Generator status

.3 Generator Fault

PART 3 EXECUTION

3.1 GENERAL INSTRUCTIONS

.1 The Contractor shall be responsible for verifying all measurements and details of the equipment and structures necessary for the proper fitting and connection of the new work before proceeding with the work. Any discrepancies between the Drawings and work shall be referred to the Engineer. The Contractor is responsible for the proper fitting of the work and shall make such changes as necessary and directed by the Engineer without additional cost to the Contract.

3.2 TABLE OF SETPOINTS, ALARMS, TRIPS

.1 System integrator is responsible for completing a table of setpoints, alarms, and trips as required in the Control Narrative.

.2 The system integrator is responsible for adding all required items to the final Control Narrative.


.3 All control/monitoring points required for full integration and operation of station shall be identified and entered into the table.

3.3 CONTROL SYSTEM

.1 Connect all field I/O as required.

.2 Do not run analog signals in the same conduit as 120 VAC or digital I/O.

.3 Insure proper grounding of shields for all analog signals. Ground at the panel only. Control Panels shall be considered the same as distribution panels and shall be grounded to the system.

.4 Confirm each I/O cable for continuity from panel to field device.

3.4 CO-ORDINATION OF THE WORK

.1 Controls requirements shall be confirmed with the equipment supplier of all equipment.

.2 The work of this Section shall be arranged in cooperation with other Divisions of this Contract in such a manner as not to interfere with other work.

3.5 CABLES AND WIRING

.1 Unless indicated otherwise, all wiring and cables shall be installed in conduit, wireways, or in underground ducts in accordance with the electrical specifications and drawings.

.2 Branch circuits have been indicated on the Drawings for all lighting, power and other outlets. Identify the circuits in the lighting panels and power panels and at points of termination with cable markers. If the wiring is installed with a different circuit, revise the As Built Drawings to show the new circuit number which has been given to the respective lighting or other appliance circuit.

.3 Shielded cables shall be terminated so that the shield is no more than 25 mm from the connection point. The shield shall be taped to the cable to prevent inadvertent connections.

3.6 CONTROL/INSTRUMENT CABLE SCHEDULE

.1 Supply and install cabling to all equipment and instruments as required to provide a fully functioning system designed to operate as described within the Tender documents.

3.7 COMMISSIONING

.1 The commissioning shall consist of a point by point verification of the Control System interface and PLC control logic, and a detailed performance test.

.2 The commissioning tests shall include, but not necessarily be restricted to: .1 Processing of discrete and analog field inputs (triggering of alarms, status update

and event logging). .2 Failure and recovery of the Control/Monitoring System operator interface.


.3 Failure and recovery of the plant control system and PLCs.

.4 Failure and recovery of PLC communications.

.5 Complete system shutdown and start up.

.6 Simulated power failure.

.7 Local Real time configuration modification.

.8 Remote Real time configuration modification via VPN connection.

.9 Creation and linking of a new device on a display screen.

.3 The commissioning shall include a complete 100% verification of all logic in the PLC, data transfer between the SCADA System and the PLC, all information displayed on graphic screens, all trends, all historical data, all database interfaces and all alarms.

.4 All testing shall be witnessed and each test and verification procedure shall be individually signed off by the Engineer.

3.8 ACCEPTANCE

.1 Prior to final acceptance the following conditions must be satisfied: .1 All errors and/or deficiencies identified by the Engineer have been corrected. .2 All revisions and modifications requested by the Engineer have been completed. .3 All documentation has been delivered to site, reviewed, and accepted by the

Engineer. .4 All training, as identified in the Documents, has been completed.

3.9 GUARANTEE AND WARRANTY

.1 The general contractor guarantees and warrants that all equipment covered by or supplied pursuant to the specifications shall:

.1 Comply with the specifications for the said equipment;

.2 Be free from defects in design, manufacture, workmanship or materials;

.3 Perform as specified in the Specifications and without unwanted interruption for a period of twelve (12) months after the date when the equipment was put into regular operation, which date shall be established by the Engineer, or where a manufacturer or general contractor normally offers a longer period of guarantee, that longer period will govern.

.4 Have any breakage, damage, defects or deterioration (other than those due to the negligence of parties other than the general contractor or to the imposition on the equipment of extraordinary working conditions or to normal wear and tear) in the said equipment that occur or are detected and are reported to the general contractor within the guarantee/warranty period referred to above made good promptly by the general contractor at his entire expense including the expense of all necessary labour, supervision, travelling, replacement parts and transportation. (To assist the general contractor in having work carried out on installed equipment or in removing or replacing installed equipment or parts thereof, the Engineer will take all reasonable steps to provide the general contractor with ready access to such equipment.)

.2 Notwithstanding expiration of the Guarantee, the general contractor shall not be relieved of his responsibility for correcting any defects in the equipment of which notice has been given to the general contractor prior to the date of the expiration of the Guarantee and


remain uncorrected and those defects in the equipment neither observed nor discovered prior to the date of expiration of the Guarantee.


CAPE BRETON REGIONAL MUNICIPALITY SECTION 10 10 31 DISINFECTION IMPROVEMENTS CONTROL SYSTEM STANDARDS PAGE 1 FOUR WASTEWATER LAGOONS DECEMBER 2020

PART 1 GENERAL


.1 This standard serves as a standard for control panel hardware and construction practices. It provides details of the specifications for components utilized, and must be read together with project documentation, including project drawings and specifications. In cases where this standard conflicts with the project drawings and/or specifications, the drawings and specifications shall be read as correct for the project.

.2 Where manufacturers’ names or model numbers are referenced, they are to be taken as the acceptable standard. Deviations from the standard methods and materials will be considered, however deviations are permitted only with written approval from the Owner. Deviations not approved will result in the replacement of materials and/or labour at no cost to the Owner.

1.2 SAFETY

.1 Each vendor supplied control system will include safety devices and equipment for the protection of personnel and equipment.

.2 All safety circuits and equipment shall be designed to the standards of the CEC, and other applicable bodies having jurisdiction.

.3 Electrical systems and equipment shall be constructed and installed in accordance with all applicable requirements of the latest edition/revision in force of the CEC.

.4 Provision shall be made to individually lock out all disconnecting devices with a safety lock

1.3 WIRING METHODS

.1 Route analog and discrete wiring separately

.2 Always connect the shield ground wire for the 24VDC twisted pair and triad instrumentation signal wire to ground at the incoming terminal block only (point of supply of loop power) then tape it on the opposite end, never at the field wiring arm or at the field instrument / JB

.3 Ground the 120VAC instrumentation digital control wire grounds to both ends. If the wire runs through an intermediate junction box, connect the wire’s ground to a common

junction box ground bar and then to earth via the junction box ground.

.4 All field control panels and junction boxes shall be grounded to building ground system using #6 AWG green copper grounding wire.

.5 All cables and wires/conduits shall enter the instruments/boxes/panels from the top in wet/damp and outdoor areas.


.6 Remove wiring insulation only enough to allow insertion into terminal block plus not more than 4 mm (3/16 inch)

.7 Use protective braids when routing wiring to back of doors or other areas where flexing may occur

.8 Ultrasonic transducers or other instruments sometimes come with integral wire leads that are unarmored, supply and install a field junction box close to the instrument location along with terminal blocks. Any exposed non-armored wire leads shall be protected with liquid-tight flexible metallic conduit. If the sensor wires has adequate length to reach the transmitter box, provide conduit to protect those wire between the sensor and the transmitter.

.9 Horizontal data and communications cable length shall be limited to 90m (295ft.), and this includes line and patch cord lengths.

.10 All cables, instruments, electrical control and electrical power shall have identical cable identifier markers attached to both ends. All control wiring must use compression type ferrules on each conductor. Use heat shrink of similar approved sleeve type markers with typewritten indelible black ink, with each conductor identified. All cable identifiers shall be suitable located and have markings of sufficient size to provide good legibility.

1.4 ROUTING METHOD

.1 Where applicable, cable tray, conduit and similar routing will be installed along building grid lines and in coordination with services of other trades.

.2 Wiring installed in cable tray or similar raceway will be separated physically by voltage, purpose and function. Use of dividers and similar barriers is permitted provided separation is maintained and CEC rules for cable fill and derating are observed.

.3 Routing and installation must conform to all applicable rules and regulations of the CEC and local authority having jurisdiction.

1.5 WIRING

.1 Discrete 24VDC or 120V AC Input/Output wiring – multi-conductor industrial control cable types TEW or RW90 with overall PVC Jacket in Conduits minimum size #14 AWG, 600 V Insulation.

.2 Control wiring colours:

.1 +24VDC Blue

.2 COM VDC Yellow

.3 24 VAC Brown

.4 120VAC Power Black

.5 Neutral White

.6 120 VAC input Red

.7 120VAC Outputs Orange


.8 Ground Green

.3 Instrumentation wiring - 90° insulation single or multi-pair or (triad), twisted, with individual and overall shielded, 600V, XLPE insulation with overall PVC jacket and individual pair shield wire, minimum size #16 AWG copper conductors, 600V wires shall be installed in conduits.

.4 Ethernet communication wiring and equipment to be supplied as required by one (1) manufacturer, supply wire types RS232, RS485, Horizontal data cables, Cat 6 Ethernet, patch cords, RJ-45 connectors and other connectors and adaptors as required. Acceptable manufacturer: Belden or approved equivalent.

.5 Supply Fiber Optic patch panels, single and multimode fiber optic cables, and backbone fiber optic cables as required. Acceptable manufacturer: Belden or approved equivalent.

1.6 ENCLOSURE

.1 All enclosures shall be of CSA designation suitable for the location where it is to be installed, in accordance with the CEC and other relevant specifications.

.2 Backplane Panel

.1 Material: 14 gauge steel or 5052 - H32 aluminum alloy.

.2 Thickness: 0.80" (2 mm).

1.7 GROUNDING

.1 All control cabinets and enclosures will be supplied with grounding connections of suitable ampacity, and be of mechanical fastening type.

.2 Instrumentation circuits will be designed with complete grounding provisions, including shield draining, single ground connections and provisions of the CEC.

1.8 MATERIALS – GENERAL

.1 Where possible, equipment and components mounted inside the panel shall be mounted on TS35 type DIN rail.

1.9 POWER SUPPLY

.1 The following are approved power supply manufacturers:

.2 OMRON S8VS series

.3 Allen Bradley 1606 series

1.10 DUPLEX RECEPTACLE OUTLET

.1 Only 120V/15A receptacles suitable for standard use in North America c/w polarized plus configuration are acceptable.


1.11 CONTROL SYSTEM PANEL CIRCUIT BREAKERS – DIN RAIL

.1 The following are approved circuit breaker manufacturers:

.1 Allen Bradley

.2 Eaton

1.12 SURGE SUPPRESSOR

.1 The following are approved surge suppressor manufacturers:

.1 Eaton

1.13 TERMINAL BLOCKS

.1 The following are approved terminal block manufacturers:

.1 Allen Bradley

.2 Phoenix Contact

.3 Weidmuller

.4 Wieland

.2 Ground terminal blocks shall be grounded directly to the DIN rail.

1.14 CONTROL RELAYS

.1 The following are approved control relay manufacturers:

.1 OMRON G2R Series

.2 Allen Bradley 700HF Series

1.15 PILOT DEVICES

.1 The following are approved pilot device manufacturers:

.1 Allen Bradley 800T series

.2 Square-D 9001 series

1.16 FUSES

.1 Class CC HRC fuse, with 600V, 30A fuse holder. Mersen Cat. No. USCC1I.

1.17 PANEL MOUNT HMI

.1 The following are approved panel-mount HMI manufacturers:

.1 Allen Bradley Panel View Plus

1.18 PLC

.1 The following are approved PLC manufacturers:

.1 Allen Bradley Compact Logix 1796-L24XX Series


1.19 ACCESSORIES FOR THE PLC

.1 UPS for backup power to PLC and control panel equipment - Ablerex ARES RT series, Liebert GXT4 series. Provide monitoring for UPS system.

1.20 RUN-TIME METERS

.1 Omron H7ET-NFV-B


CAPE BRETON REGIONAL MUNICIPALITY SECTION 10 10 32 DISINFECTION IMPROVEMENTS IO LAYOUT STANDARDS PAGE 1 FOUR WASTEWATER LAGOONS DECEMBER 2020

PART 1 GENERAL


.1 This standard serves as a standard for PLC I/O Layouts.

1.2 DIGITAL INPUTS

.1 Part 1 - Standard Alarm Inputs

.1 The first six digital inputs of any given controller shall be reserved for the following six standard alarm points, whether the points are connected and utilized or not. These six inputs shall not be used for any other purpose unless specifically approved by the owner. .1 Input 0 A/C Power Fail (from UPS, power fail relay, or transfer switch) .2 Input 1 UPS/backup system Low Battery .3 Input 2 Intrusion Switch/alarm .4 Input 3 Station Flood .5 Input 4 Station Low Building Temperature .6 Input 5 Smoke Detected

.2 Part 2 - Diesel/Emergency Power System inputs

.1 Diesel I/O should be wired as a group. Typical Inputs from a backup diesel system are as follows: .1 Diesel Running .2 Diesel in Auto .3 Diesel in Hand .4 Diesel High Engine Temperature .5 Diesel Low Oil Pressure .6 Diesel Overspeed .7 Diesel Overcrank .8 Diesel Low Fuel .9 Diesel Low Battery

.3 Part 3 - Additional Inputs

.1 Additional Digital Inputs for any given station shall be wired after the above inputs, following a logical and orderly system approved by the owner.

1.3 DIGITAL OUTPUTS

.1 Only Relay-type outputs shall be used.

.2 Outputs for different station components shall be grouped, according to the grouping of the PLC Outputs.


CAPE BRETON REGIONAL MUNICIPALITY SECTION 29 30 11 DISINFECTION IMPROVEMENTS MISCELLANEOUS PAGE 1 FOUR WASTEWATER LAGOONS PANEL DEVICES DECEMBER 2020

PART 1 GENERAL

1.1 REFERENCES - GENERAL

.1 Equipment, Products and Execution must meet all requirements detailed in Section 29 05 00 – Common Work Instrumentation.

PART 2 PRODUCTS

2.1 MISCELLANEOUS PANEL DEVICES

.1 Refer to Divisions 10 and 26 for additional information and requirements.

.2 Ethernet Switch

.1 Install Ethernet switch in control panel

.2 Eight (8) port unmanaged Ethernet switch.

.3 Power Supply: 24 VDC.

.4 Mounting: DIN rail.

.5 Approved Product: Schneider Electric or equal.

.3 Dialup Modem (If Required)

.1 Industrial modem

.2 Power Supply: 24 VDC.

.3 Mounting: DIN rail.

.4 RS-232

.5 PSTN-port

.6 Phoenix Contact

.4 Pilot Lights

.1 Provide LED transformer type pilot lights for extended lamp life, oil tight, push to test, complete with appropriate colour lenses. Normal colours used are run=red, stop=green, fault=amber.

.5 Terminals

.1 Provide strap screw type terminal blocks rated for 600 V.

.2 Identify each terminal block within an enclosure with a unique machine printed terminal block number. Cabinet chassis grounding terminal blocks to be identified by the electrical ground symbol.

.3 Connections to screw terminals to be locking fork tongue insulated crimp type wire connectors.

.4 Terminals to be Weidmuller or approved equal.

.5 Provide a group of terminals for each of 120 VAC hot and neutral and 24 VDC positive and negative power. Distribution wiring to have a thermal magnetic circuit breaker upstream of all major blocks of loads, adequately sized to protect the connected load while not causing nuisance tripping.

.6 Provide Weidmuller disconnect type terminal blocks for each load or loop powered from the marshalling panels.

CAPE BRETON REGIONAL MUNICIPALITY SECTION 29 30 11 DISINFECTION IMPROVEMENTS MISCELLANEOUS PAGE 2 FOUR WASTEWATER LAGOONS PANEL DEVICES DECEMBER 2020

.6 Nameplates

.1 Refer to Section 29 05 00 – Common Work Instrumentation.

PART 3 EXECUTION

3.1 REFERENCES - GENERAL

.1 Refer to Section 29 05 00 – Common Work Instrumentation, Divisions 10 and 26.



320 Esplanade


Tel: 902-563-5015 Fax: 902-539-9964


December 3, 2020

ADDENDUM #1


To Whom It May Concern: With regards to the above tender, please see the attached specifications/information listed below.


Sincerely, Daniel Colbourne Daniel Colbourne, Procurement Officer/Financial Services Clerk





Addendum No. 1


B1P 7B9








OPTIONAL SITE VISIT

It is recommended that all interested companies attend this optional site visit on Tuesday December 8th tofamiliarize themselves with the sites. The Meadowbrook lagoon and lift station sites will be accessible from8:00am-9:30am and the access gate is located at Meadowbrook Drive, Sydney Mines. The Southwest Brooklagoon will be accessible from 10:15am-11:45am and the access gate is located at Grand Lake Road, immediatelyacross highway from Seaside Cable Communications office. The existing Tower Road and Centreville Streetlagoons and structures are very similar to the Meadowbrook site and no site visit is scheduled. Individuals mayview these two sites from outside chain link fence. It is mandatory that all persons have the proper PPE andindividuals that do not have the required PPE will be denied access.

DRAWINGS

DRAWING –P1

.1 TOWER ROAD, & CENTREVILLE ROAD/MEADOWBROOK UV CHAMBER ANDPIPING DETAILS,

.1 Replace Note 2 as follows:

.1 Except where noted, all piping, fittings and flanges is to be PVC Sch 80 with solventwelded joints.

.2 Plug valves on this sheet are to be as follows:

.1 Plug valves are to be eccentric action and oriented in the manufacturers recommendedposition relative to the flow when the valve is in the open position. Valves within theUV chambers are to be flanged and worm gear wheel operated. Valves within therepurposed chlorination chambers are to be flanged and be direct nut operated.Standard of acceptance is Cam-Central plug valves by “Val-Matic”.

.2 Details A & C - CHLORINATION CHAMBER PIPING DETAILS:

.1 Add the following note:

.1 Install a 75mm dia. “Zurn” floor drain, cover and piping within the new concreteinfilled area. Floor drain is to be c/w trap, backwater valve and access cover andconnected to 150mm dia discharge piping immediately adjacent to the proposed150mm increaser outflow connection.

.2 Clarification:

.1 Existing outflow pipe from the Centerville and Meadowbrook chlorination chambersare 200mm dia. and not 300mm dia as indicated.



.3 PIPE STANCHION SUPPORT detail:

.1 add the following notes:

.1 Pipe stanchion supports are also required under each plug valve.

.2 Supports are to be fabricated with Sch 80 steel pipe and 6mm repad and baseplate.

.3 Entire pipe support is to be finished as per STEEL NOTES: #9, Sheet S2.

.4 Submit detailed fabrication drawings prior to ordering material and fabrication.

.5 STEEL NOTES: #2, #3, #4, #5, #6, #9 and #11 on Sheet S2 also pertain to thesesupports.

DRAWING –P2

.1 Plug valves on this sheet are to be as follows:

.1 Plug valves are to be eccentric action and oriented in the manufacturers recommended positionrelative to the flow when the valve is in the open position. All buried valves are to be mechanicaljoint and direct nut operated. Standard of acceptance is Cam-Central plug valves by “Val-Matic”.

.2 PROPOSED PIPE PROFILE –A:

.1 Replace EXISTING STORM SEWER note with the following:

.1 Existing Sanitary Sewer.

.2 Add the following note:

.1 Perform careful excavation to confirm depth of existing sanitary sewer prior toordering 1500mm dia. manhole. Excavation is to be backfilled prior to delivery ofthis manhole.

DRAWING –S1

.1 Add the following Detail and note:

.1 SUMP PIT DETAIL: A 450x450x175 deep sump pit is required in the four UVChambers. Sump is to be located in the corner directly beneath the



stair. Place additional reinforcing bars as shown to match the sizeand spacing of upper and lower mats.

.2 Add the following note to CONCRETE NOTES:

.1 12. All interior surfaces (walls, floor) of UV concrete chamber to receive “Permaquick 200 Crystalline Waterproofing". Product is to be applied (brush) as per manufactures recommendations at a minimum coverage rate of 1.3kg/ sq.m.

DRAWING –S3

.1 OVERHEAD DOOR NOTES:

.1 Reference to roll-up door interior and exterior open/close switch in note 2 and elsewhere in document to be modified as follows:

.1 Interior switch to have Nema 4 enclosure and complete with OPEN/CLOSE/STOPbuttons. Exterior switch to be a tamperproof Nema 4 enclosure and complete withOPEN/CLOSE/STOP buttons and surface mounted ON/OFF mortise cylinder forlockout and to be compatible with all specified equipment and controls.
