dearator test procedures ydtd qj facs 07e1

8/13/2019 Dearator Test Procedures YDTD QJ FACS 07E1

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Commissioning Measures Form for Approval

No.YDTD-TS07

Project

name

Phase I of 2330MW Project of Tengda

Coal-fired Power Plant in India

Contract

No.

ITD-032

To: Tengda Project Department of Sichuan Machinery & Equipment Import & Export Corporation

Now it is submitted for the examination and approval with the deoxygenation system

commissioning technical measure

Document No. :YDTD-QJCS-07

Appendix: deoxygenator commissioning technical measure

Contractor: Sichuan Tongneng Power Technology Co. Ltd.

Project principal Date

Examination and approval opinions of the project supervision department:

Project supervision department (seal)


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Phase I of 2 330MW Project of Tengda Coal-fired Power Plant in IndiaDeoxygenation system commissioning technical measure

Examination and approval opinions of the owner

Legal person of the project (seal):

Owner representative Date

Contractor: Sichuan Tongneng Power Technology Co. Ltd Mar. 2008


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Phase I of 2330MW Project of Tengda Coal-firedPower Plant in India

Deoxygenationsystem commissioning

technical measure


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Examination and Approval Record for

Documents

D o c u m e n t

n a m edeoxygenation system commissioning technical measure

D o c u m e n t

N o .YDTD-QJCS-07

The 1st

version

Date of

publication

The

2nd

version

Date of

publication

Main revised content

E d i t i o n n o .

The 3rd

version

Date of

publication

Main revised content


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Phase I of 2330MW Project of Tengda Coal-fired Power Plant in IndiaDeoxygenation system commissioning technical measure

R e v i e w o f

t h e

p r i n c i p a l o f

p r o f e s s i o n a

l g r o u p o f

c o m m i s s i o n

i n g p r o j e c t

D a t e :

C o m p i l e r o f

t h e

t e c h n i c a l

d o c u m e n tD a t e

ontent

1. Compilation purpose ...........................

2. Compilation reference .........................

3. Commissioning quality standard and object


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9. Safety measure ................................

10. Appendix ......................................


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1. (Compilation Purpose)

1.1 Its established to instruct and regulate the commissioning of the system and equipment, and to assure it runsnormally and safely.)

1.2 Its to inspect electric and thermal technical protection interlock of the deaerator system and the signal fixture, to

make sure the proper actions.

1.3 Its to inspect the setting up status of the system & equipment, and system performance, and discover and solve

the defections which maybe existed.)

2. (Compilation References)

2.1 Project for the Basic Construction of Thermal Power Plant from Start to Finish to Check before Acceptance

Regulation (1996 version) Electric Power Construction (1996) No. 159

2.2 Technical Specification for Power Construction and Acceptance (Steam Turbine Unit Chapter) DL5011-1992

2.3 Technical Regulation for Power Construction and Acceptance (Pipeline Chapter) DL5031-19942.4 Thermal Power Project Tuning & Commissioning Quality Testing & Evaluation Standards Construction Quality

Inspection (1996) No. 111

2.5 "Regulation for the Adjustment & Trial Runs Starting of Thermal Power Project Construction Quality

Inspection (1996) No. 40

2.6 Factory Drawing, Instructions for Installation and Usage, Quality Guaranty Book and Certificate of Merchandise

2.7 Design Document, Drawing, Instructions, Commissioning and relevant document and meeting minutes, etc.

2.8 The Supply Contract for Equipment and the international or domestic standards regulated in the contract

3. Commissioning quality standard and object

3.1 Deaerator system commissioning, it should be according to the relevant quality standards for the deaerator

System and equipment and the quality requirements of commissioning contract to meet the setting uprequirements for the whole units.

3.2 Professional commissioning members and professional group leaders should be check and control the key

processes of commissioning in according to the Appendix 1(Quality control point to commissioning)


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4.1.6 To be responsible for the approval after trial running of sub-section of the system.

4.2 (manufacture unit)

4.2.1 To be in charge of setting up & stopping process, running adjustment and problems solving when the system is

trial running.

4.2.2 To be in charge of listing the official brands of the relevant system and equipment;

4.2.3 To prepare the regulation, tool and logsheet for records for operation;

4.2.4 To be in charge of in-process inspection (patrol inspection) and normal maintenance when trial running.

4.3 Responsibility of commissioning unit:

4.3.1 To be responsible for the preparation of the plan for the trial running, and disclose all-round technically

4.3.2 To prepare the relevant testing instrument, meter and tools;

4.3.3 To be responsible for directing the commissioning of the sub-system;

4.3.4 To be responsible for making notes of the testing data and filing work;

4.3.5 To fill in the quality evaluation sheet of the trial running;

4.3.6 To be responsible for the approval of the trial running of the sub-system;4.3.7 To prepare the commissioning report;

4.4 The commissioning of the deaerator unit is responsible for installation unit, but operated by commissioning unit.

The commissioning of the sub-system of the deaerator is responsible for commissioning unit, and to finish the

commissioning with the cooperation of the installation unit and other related units. The commissioning of the

deaerator system should be conducted at the direction of the trial running group of the sub-section, and operated

by professional commissioning group, pneumatic equipment group as the leader, and electric, thermal control

and other relevant groups as assistant.

5. (System brief introduction)

5.1 #1 set of phase I of 2330MW project of Tengda coal-fired power plant in India takes the horizontal deaerator,

its main function is to remove the oxygen, CO 2 and other non-condensed gas in the condensed water; andsecondly, it could heat the condensed water to the saturation temperature under the deaerator operation pressure,

and stock all the saturation water with standard oxygen level to the water tank of the deaerator to supply the needs

of the boiler at any time. Extraction steam by the section five of steam turbine will be the operation source when

its normally worked


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Temperature of the water output: 178.44 180.81 The oxygen content of water output: 7g/L

PH value: 8.8 9.3

6. (Conditions prior to commissioning)

6.1 The deaerator system have been installed, with sufficiency illumination at the scene, roads are open;

6.2 Its already finished for the washing of the condensed water system, and its clear for the water tank of the

deaerator;

6.3 Its washed clearly and properly for the downtake of the deaerator;

6.4 Its ok for the hydraulic pressure of the deaerator system;

6.5 Its blown clearly for the steam pipes of the deaerator system, and system restored;

6.6 The safety valve of the deaerator has met its operating pressure in pre-pressure when installation;

6.7 Nilometer in place should be clear and transparent, and with protection covering (if the nilometer is the magnetic

type liquid level meter, the operation should be flexible and properly);

6.8 Its in the normal position for the water level of the water tank of the deaerator;

6.9 All the manual controlled valve, automatic electric valve, and adjustment valves in the system could be opened and

closed properly and accurately;

6.10 All are ok for every interlock protection testing for the deaerator;

6.11 All kinds of thermal meters, transducers are ok for inspection and verification, and all could be put in place or DCS

7. (Commissioning work procedure)

The procedure for commissioning of the deaerator system as below:


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8. (Commissioning step)

8.1 executing organization inspection8.1.1 to inspect the automatic electric valve and record the following data:

a) KKS code;

b) name (if there is any detailed description from the power plant, and then take it as standards);

c) the position in place instructs correct or not?

d) the operating direction on the electric control plate is correct or not, and the feedback is correct or not?

e) the operating direction on the CRT is correct or not, and the feedback is correct or not?

f) the opening and closing time for the valve.

8.1.2 to inspect the steamed switch valve, and record the following data:

a) KKS code

b) name (if there is any detailed description from the power plant, and then take it as standards);

c) the position in place instructs correct or not?

d) the operating direction on the CRT is correct or not, and the feedback is correct or not?

e) is there any quick-opening and quick-closing function?

8.1.3 to inspect the steamed adjusting valve, and record the following data:

a) KKS code;

b) Name (if there is any detailed description from the power plant, and then take it as standards);

c) Whats the instructions for the corresponding position in place and the feedback as when the upper line

is 0% 25% 50% 75% 100% and when the lower line is 100% 75% 50% 25% 0%?

d) is there any quick-opening and quick-closing function?

8.1.4 To analyze the effect will probably be occurred under the condition of power off or gas off by the above

executing organization, and if there is larger impact, its need to show the contact list and explain the danger

to the owner.

8.2 Thermal technical signal inspection8.2.1 to inspect the analog signal, and record the data below:

a) signal name

b) KKS code

) d di d i


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a) If the water level value of the deaerator is higher than 1 stage (2650mm), it will warn, and turnoff the

bypass control valve and main inlet control valve;

b) If the water level of the deaerator is higher than 2 stages (2850mm), it will alarm, and turn on the

deaerator overflow valve, and turnoff No. 6 high pressure heater to drain valve of deaerator, the section

five extraction steam to the electrical isolation valve of deaerator, auxiliary steam to pressure adjusting

valve of the deaerator, and set up the min flow of recycle valve.

c) If the water level of the deaerator is higher than 3 stages (2950mm), it will alarm, and turn on from the

deaerator to condenser overflow valve and condensing pump recycle, and turn off from the section three

extraction steam to automatic electric valve and check valve, and turn on section 3 extraction steam

pipeline drain valve.

d) If the water level of the deaerator is lower than 1 stage (2250mm), it will alarm.

e) If the water level of the deaerator is lower than 2 stages (1400mm), it will alarm, and will link to the

pump to protect it to trip.

8.3.2 Deaerator pressure interlock protectiona) When the deaerator pressure is lower to 0.2MPa, it will turn on from auxiliary steam pressure to

deaerator electric valve, and the drain valve turn on automatically;

b) When section five extraction steam pressure increased to 0.2MPa, it will automatically set up from

section five extraction steam to deaerator steam valve, and the drain valve will turn off automatically,

and it will turn off automatically from the auxiliary steam pressure to deaerator pressure adjusting valve;

8.4 Trial Running of the Deaerator

8.4.1 Preparation and inspection before trial running of the deaerator

8.4.1.1 To check if all the system related with the deaerator, including the deaerator, are all in the normal situation,

and also the pressure gauge, thermometer, and nilometer;

8.4.1.2 To confirm if all automatic electric valve and adjusting valve could operate well, and all shows normal for

the relevant interlock protection testing.

8.4.1.3 Installation corp. should make a initial water pressure/steam pressure adjustment to the deaerator safety

valve.

8.4.2 The deaerator should be washed before the trial running.


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8.4.3.2 To check if the deoxygenated door of the deaerator with proper opening

8.4.3.3 Operate the auxiliary steam to the deaerator pressure adjusting valve by hands, and rise the pressure to

0.2MPa and maintain the operation with rated pressure.

8.4.3.4 Turn on the water-in valve of the water supply pump to warm the pump.

8.4.3.5 After network incorporated generating unit, and when the extraction pressure of section 5 arrived 0.2MPa,

it will turn on from the extraction steam of section 5 to steam supply electric valve of the deaerator, and

drain valve and auxiliary steam to deaerator pressure adjusting valve will be turned off automatically, and it

will be sliding pressure running.8.5 normal running and maintenance of the deaerator

8.5.1 regulation of the parameters for the normal running

Deaerator pressure 0.2 0.95 MPa a

Deaerator temperature saturation temperature to corresponding pressure

Deaerator water level 2450mm(middle line of the water tank of the deaerator)

Oxygen amount of the deaerator 7ug/L8.5.2 Often check if there is no any water leakage and vibration of the deaerator system, and inspect if the

indications of the meters in place and far-off meters are the same.

8.5.3 Often check the water level and the flexibility of the pressure controller and all kinds of valves operation.

8.5.4 To make sure the oxygen amount of the deaerator is OK, and adjust the open quantities of the deoxygenized

valve.

8.5.5 To enforce the system inspection in the winter, to prevent freezing and breakage of the equipment,

meters/gauge and pipelines and false indicating situations.

8.6 Stop Running of the Deaerator

8.6.1 We should keep eyes on the running status of the deaerator, as the pressure will be fallen down along with the

load fall of the assembly units;

8.6.2 Pay attention to the variation of the pressure when its stopped for the high pressure drain

8.6.3 When the deaerator pressure decreased to 0.2MPa, it will automatically set up for the auxiliary steam, and it

will automatically turn off for the section five extraction steam to deaerator steam supply valve, and the drain

valve will be turned on automatically.

8.6.4 When the water supply pump cease to run, the auxiliary steam to deaerator adjusting valve should be turnoff


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Enforce the management to all equipments when trial running, and adjust it if any abnormal running occurred, to

make sure that the system is under the best running situation.

a) Pressure adjustment

b) Temperature adjustment

c) Flux adjustment

d) Water level adjustment

8.8 Fill in the trial running record

All the main data/parameter collected in the trial running should be noted down in the logsheet 8 of Trial

Running Parameter Logsheet for Deaerator System .

9. (Safety measure)

9.1 All members who have take a part in the commissioning should be seriously carry out the Safety Regulation

and the relevant regulations on the spot to make sure the operation be completed safety and properly;

9.2 The commissioning operation should be stopped immediately, and the equipment should be adjusted to the

lowest energy consumption status, and then analyze the reason and come up with the solving methods when there

is any equipment likely to be or already damaged or personal injury or death occurred.

9.3 It should be adjusted in time and report to the commander timely when there is any abnormal occurred when

commissioning.

9.4 Every kinds of professional members should be on the spot for the whole commissioning process to make sure

safely operation for the equipment.

9.5 The commissioning members should analyze the reason and propose the solving actions when the running

equipment or pipeline with extreme vibration.

9.6 Every operator should wear the safety helmet when commissioning, and all the dangerous work leaders should

analyze the spot to eliminate the hidden danger, such as crashes, electric shock, burns, mechanical rotating cutter

injury, etc.9.7 The steam amount should be controlled to avoid the temperature increased too fast when heating up the steam.

9.8 to prevent the deaerator pressure from quick rise or quick fall;

9.9 to prevent the deaerator water level from quick-increase or quick-decrease;

9 10 to prevent the vibration of the deaerator


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Appendix 1 Inspection List of the Necessary Condition before Commissioning

No. INSPECTION ITEMS REQUIREMENTSINSPECTION DATE

INSPECTI

ONRESULT

REMARKS

1. Deaerator installation finished and all technical data be noted down

2. Installation for deaerator pipeline system Finished, hangers have been adjusted

3. Safety valve of deaerator both ok for the water or steam pressure adjustment, installationfinished

4. Condenser and condensed water system its ok for washing

5. deaerator system valve Commissioning finished, operate and running properly

6. electric and thermal technical meter Be verified and confirmed, indicate correctly

7. electric and thermal technical protection,interlock and signal device testing ok

8. dynamical power reliable

9. spot for trial runningroads are openwith sufficiency illumination at the scenereliable accident illumination

10. Communication equipment on the trialrunning spot could be used conveniently

11. Fire protection equipment enough quantity

12. inspector (including electric and thermal

technical members)

enough quantity

be trained13. Inspection tools and material enough quantity

14. running toolslog sheet for records ready

15. Instrument, meters ready


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Remarks:

PIC for commissioning: Date: M /D/ Y


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Appendix 2 Commissioning Log sheet for Electric Switches Valve

MCC plate operation DCS operation time (s)KKS Code Name

correctindicationin place

correctdirection

correctfeedback

correctdirection

correctfeedback

turnon

turnoff

Date Signature

20LBS40AA001Extraction steam of section 4 to deaerator steam supply valve1

20LBS40AA004Extraction steam of section 4 to deaerator steam supply valve2

20LBG50AA001 Auxiliary steam to deaerator steam supply valve

20LAA10AA501 setting up the exhausting electric valve 1 of the deaerator

20LAA30AA501 setting up the exhausting electric valve 2 of the deaerator

20LAA20AA501 Deoxygenated electric valve of the deaerator

20LAA40AA401 Urgent water-out electric valve of the deaerator

20LAA41AA401 Deaerator outflow to condenser electric valve

10LAA42AA401 Deaerator to water-out electric valve


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Appendix 3 Commissioning Log Sheet for Pneumatic Switch Valve

DCS operation FunctionKKS Code Name

correctindicationin place

correctdirection

correctfeedback

Quickswitch

on

Quickswitch

off

Date signature

20LBS40AA002 Extraction steam of section 4 to check valve 1

20LBS40AA003 Extraction steam of section 4 to check valve 2

20LBS40AA401Extraction steam of section No. 4 to the front pipelinedrain valve of deaerator steam supply valve 1

20LBS40AA402 Extraction steam of section No. 4 to the front pipelinedrain valve of deaerator check valve 2


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Appendix 4 Commissioning Log Sheet for Pneumatic Adjusting Valve

Indications as the below value, and the feedback will be %KKS Code Name

0% 25%50%

75%

100%

75%

50%

25% 0%

quick switch onand off function

Date signature

20LBG50AA101 Auxiliary steam to deaerator pressure adjustingvalve


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No. Testing content inspection dateResult

signature

valve.5. If the water level of the deaerator is lower than 1stage, it will alarm.

6. If the water level of the deaerator is lower than 2 stages, it will alarm, and will link to the pump to protect it totrip.

4 Deaerator pressure Interlock protection

1. When the deaerator pressure decreased to 0.15MPa, auxiliary steam will run automatically, and extraction steamvalve and check valve of section 4 will turn off automatically, and the drain valve will turn on automatically.

2. When section 4 extraction steam pressure increased to 0.15MPa, it will automatically set up from section 4extraction steam to deaerator steam valve, and the drain valve will turn off automatically, and it will turn offautomatically from the auxiliary steam pressure to deaerator pressure adjusting valve;

5 interlock turnoff conditions of section 4 extraction steam valve

1. the turbine trip

2. generator stepout

3. OPC operation

4. with higher deaerator water level5. deaerator pressure>1.3MPa

6. Deaerator pressure1.3MPa

6. deaerator pressure


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No. Testing content inspection dateResult

signature

4. with highest deaerator water level5.The temperature difference between the top and bottom of the extraction steam pipeline of section 4 is over 50

6.Electric load 1.0MPa , turned on

With non-high deaerator pressure 1.0MPa , turned off

Recorder: Testing Date: