GOVERNING.doc

8/20/2019 GOVERNING.doc

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TAPP-3&4 COMMISSIONINGPROCEDURE

PROCEDURE NO: 3&4-

COMMISSIONING PROCEDURE FORGOVERNING SYSTEM

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NUCLEAR POWER CORPORATION OF INDIA LIMITED(A Govto! I"#$% E"t''$)*

TARAPUR ATOMIC POWER PRO+ECT-3&4

Concurred BY

N%, & #)$"

NPC D)$" G'o.

PREPARED/Y

CECED /Y REVIEWED/Y

APPROVED/Y

ISSUED /Y



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-T2$) % $) $"t"t$o"% !t 5%"6-


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REVISION LOG

Revision Details Preparation Details

Issue No. Rev.No. Details DatePageNo.

Prepared byChecked byReviewed by

Concurred byApproved by


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CONTENTS

!

N".#I#!$ C!A%$ PA&$ N".

Cover sheet '

Revision log(

Contents)

'.Purpose

*

+.

Pre,re-uisites

+.' tatus o other syste/s+.+ yste/ Re-uire/ents+.( 0anpower re-uire/ents+.1 Re-uire/ent o special $-uip/ents+.) Re-uire/ent o outside agencies

+.* 2a3ards 4 precautions

*

(.&eneral /ethod

5

1.Design intents

'6

).$7pected process para/eters

+8

*.9ork plan

+8

:.#est report or/at

+'

5.Reerence

+(

6.;eriication process

+1

'8. COMMISSIONING PROCEDURE ACCEPTANCE NOTE +)


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10 P.'o):

#he purpose o this procedure is to provide guidelines orco//issioning o the governing syste/.

70 P'-'8.$)$t):

7.1 St%t.) o! ot2' ))t,):

a All erection activities should be co/pleted.b "il lushing o the syste/ should be co/pleted.c yste/ should be available with resh oil.d Pipes should be nor/ali3ed in all respects.e #e/porary supports should be re/oved. A"Ps are available or running.g "il Puriication yste/ should be in operation.h ervice air should be available near ilters or cleaning.

i Cooling water at oil cooler should be available.

77 S)t, R8.$',"t)

#he ollowing e-uip/ents and Instru/ents shall be /ade available.

a< Portable vacuu/ pu/p one No.b< 2ydraulic pressure pu/p one No.c< tandard pressure gauges with an accuracy o 8.'kg=c/+ range 8,

'8 kg=c/+ 1 Nos. > 8 ?+8 kg=c/+ ' Nos. > 8 ? 18 kg=c/+ ' Nosd< tandard vacuu/ gauge range 8 ? :*8 // 2g.e< Dial gauge with 0agnetic Base 8,'8 // one No.< Depth gauge one No. range 8,)8 //g< lip gauges Bo7 one No.h< @iler gauge 8.8) to ' // ' et.i< Dient si3es o spanner set double end< < Ring spanner ( // to +: // one set.k< Allen ey one set ( // to '8 //.l< crewdriver s/all to big one set.

/


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30 G"'% ,t2o#

Check the co/pletion o erection as per the design low sheets anddrawings. Check the co/pletion o e-uip/ents and supports in all oil pipesyste/s.

Check the N+ pressure in the accu/ulators. 0ake up N+ i re-uired.N+ pressureG(.8 bar.,2yd rack or CD; controller.2P syste/Gbar !P

syste/ prG1.) bar<

Check whether the test valves o 2P stop valves 0AH 1: AA +'' ? +'+ arekept opened ully.

Check whether the isolating valve in $2C circuit in 2P secondary oil isclosed 0AH 1) AA )8+ 4 0AH 1) AA)8' is open while setting thehydraulic controller.

Close the trip oil line,isolating valve 0AH )' AA )+' )++ )+1 )+) )+:)+5 )(8 )(')(*)(5 o e7traction NR; test valves 0AH )' AA 81' and81+81181)81:8158)88)'8)*8)5.

@i7 a dial gauge 8,'8 // underneath bellow A 86 in the hydraulic speed&overnor 0AH 1* By 88'.

@i7 three standard gauges in Au7iliary secondary oil 4 2P secondary oillines.8,5 kg=c/+ to read upto 8.' kg=c/+ accuracy


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0aintain oil te/perature in oil tank around )88 C = ))8 C.

$nsure that the /ain trip valve is in reset conditions.

witch o A#R panel supply so that hydraulic governor can be checkedwhen boiler is not in service.

Record the ollowing pressure in the rack.

Control oil pressure

tart up oil pressure

Au7. tart up oil pressure

#rip oil pressure

Au7. #rip oil pressure

$nsure that the respective governor characteristics are used while settingthe governor.Drg No.',''188,86+88 4 ','+58886(88<

Procedure or checking and setting o 2ydraulic &overnor.

Note down the initial reading o starting device when the starting device isin ull closed condition.

"perate starting device 0AH 1* BY 88' gradually ro/ 0ini/u/ to0a7i/u/ position and carry out the ollowing checks.

Check whether the start up and Au7iliary start up oil pressure drops.

"perate the starting device gradually and increase the Au7iliary secondaryoil pressure to +.( kg=c/+ and note down 2P secondary oil pressure.

9hen starting device is ully opened note down the starting device lit.#he lit should be +1.)// and au7iliary secondary oil pressure should be1.+ kg=c/+ or above.


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I the au7. econdary oil pressure is not obtained adust Au7iliary ollowup piston A 85 which is in service o 0AH 1* By 88' to obtain au7.econdary oil pressure o 1.+ kg=c/+ and above when starting device isully opened condition.

Note down the 2P secondary oil pressure corresponding to 1.+ kg=c/+ o Au7iliary secondary oil pressure.

Bring back the starting device gradually towards the closing position and

check the trip point o au7. econdary oil pressure. #he trip point shouldbe around +.' kg=c/+ appro7i/ately. At least under +.( kg=c/+.

Note #rip point o Au7iliary ollow up piston is the pressure at whichau7iliary secondary oil pressure suddenly alls.

Bring back the starting device to ully closed position.

$nsure the starting device is in closed condition.

@i7 the dial gauge below the bellow and adust it to read 3ero //.

Note down the initial reading o power piston A 85 o 0AH 1) By 8'' bya depth gauge.

Note down the starting device initial readings.

"perate the starting device gradually to open position till the au7iliarysecondary oil pressure increases to +.( kg=c/+.

At +.( kg=c/+ o Au7iliary secondary oil pressure check whether the 2Psecondary oil pressure is (.8 kg=c/+.

I the value is not achieved adust the ollow up pistons A 8' o 0AH 1)By 8'' o 2P secondary oil pressure e-ually.

Check the lit o power piston A 85 o 0AH 1) By 8'' is around * to :// appro7.


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tarting device travel.

!it o the bellow.

Power piston lit o 2ydraulic controller.

Au7. econdary oil pressure 2P secondary oil pressureIncrease the Au7iliary secondary oil pressure to 1.+ kg=c/+ and check

whether 2P secondary oil pressure reaches ).8 kg=c/+

.

I the value is not achieved adust the proportionality aduster A 86 o 0AH 1) By 8'' to get 2P secondary oil pressure o ).8 kg=c/+ whenau7iliary secondary oil pressure is around 1.+ kg=c/+.

Check by closing the isolating valve 0AH 1' AA )8')8+ 4)') o speedcontrol rack and note at what pressure o trip oil #ripping device 0AH )'AA 88* 0AH )' AA 88) and e/ergency trip valve 0AH )+ AA 88) tripssuddenly.

#rip device and e/ergency trip valve should trip at ( +.6 J 8.'< bar o trip oil pressure.Ater checking and ensuring that trip devices and e/ergency trip valvetrips at ( bars bring down starting device ro/ open position to closedposition.

"perate the starting device ro/ closed position and once again check at+.( kg=c/+ o Au7iliary secondary oil pressure the 2P secondary oilpressure is (.8 kg=c/+.

Increase the au7iliary secondary oil pressure in steps o 8.+ kg=c/+

and note down the ollowing.

2P secondary oil pressure.

Power Piston lit o 2ydraulic converter.

tarting device travel.

Check that a closing and opening reserve o (.) // is available or

power piston A 85 2ydraulic A/pliier 0AH 1) By 8''.


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Check the bellow travel A 86 o 0AH 1* By 88' between au7iliarysecondary oil pressure o +.( to 1.+ kg=c/+ should be appro7. ) //.

Check the total travel o A/pliier power piston. It should be )8 //appro7i/ately ro/ ully closed position to ully open condition o startingdevice 0AH 1: By 88'.

Plot the ollowing curve.

Power piston lit versus Au7iliary secondary oil pressure.

Bellow lit versus au7iliary secondary oil pressure.

Bellow lit versus 2P secondary oil pressure.

Bring the starting device to /ini/u/ position to calibrate 2P controlvalves.

Adust the local position trans/itter to indicate 3ero // or 2P control

valves.

Bring the starting device to a position where 2P secondary oil pressure is(.8 kg=c/+.

Adust the start o opening o 2P control valves ust to open at (.8kg=c/+ o 2P secondary oil pressure.

Increase the Au7iliary oil pressures in steps o 8.+ kg=c/+ and note downthe ollowing upto the /a7i/u/ position o starting device.

2P secondary oil pressure.

2P control valve lit.

Plot the curve or the ollowing.

2P secondary oil pressure versus 2P control valve lit.

I the lits o control valves are not co/ing e-ual adust the ulcru/ pointo lever eed back linkage as shown in "40 /anual.


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"pen the test valve o 2P stop valve ully and check whether stop valveopens ully.

@ully close the test valves o 2P stop valve and check whether the stopvalve closes ully.

$nsure ull lit o 2P stop valves 4 co/pare with the design values.

Now open 2P stop valve by opening the test valve ully and ensure that

the stop valve has opened ully.

Note down at what trip oil pressure 2P stop valve suddenly closes.

Bring back the starting device to ull close condition.

Bring back the starting device to closed position.

Check the dial gauge below the bellow is set at 3ero.

Note down the intial reading o starting device.

"pen gradually the starting device ro/ ully closed position to ully openposition and note down the ollowing.

Bellow lit.

Au7iliary secondary oil pressure.

2P secondary oil pressure.tarting device travel.

Plot the ollowing curve

Bellow travel versus Au7iliary secondary oil pressure.

Bellow travel versus 2P secondary oil pressure.

During the actuation o load shed relays 0AH 1* AA8'' 4 8'+ checkwhether Au7. econdary oil pressure drops down to 3ero and co/es backto the value at which the load shedding relay was actuated.


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witch on the A#R supply.

Check the 0ain trip valve trips i//ediately and all the stop valves andcontrol valves closes i//ediately.

Check the Au7iliary secondary oil pressure 2P secondary oil pressuretrip oil pressure and Au7iliary trips oil pressure reads 3ero.

witch o A#R panel supply.

I"$t$% 26) to 5 %''$# o.t 5!o' )tt$" o! Et'o-#'%.$Co"v't'

"pen the isolating valves 0AH 1) AA )8+ in 2P secondary oil line ro/$2C which was kept closed while checking the hydraulic controller.

eep the starting device 0AH 1: By 88' in /a7i/u/ position 4 close

0AH 1)AA)8'.

$nsure that the control oil line isolating valves 0AH 1+ AA *'+ is keptopened.

$nsure that au7 secondary oil line,isolating valve 0AH 1* AA )8+ is keptopened.

$nsure a pressure gauge 8 to 5 kg=c/+ in the pressure gauge pointprovided beore $2C 0AH 1) By 88' in au7 sec oil line.

P'o#.' !o' 26$" %"# )tt$" o! EC

@eed through set point voltage a i7ed voltage in co,ordination with C 4 I$ngineer.Check whether the voltage in /oving coil 0AH 1) C& 88' # is around/inus ' volts.

#he $-uilibriu/ voltage should be between /inus 5 volts to /inus '.+volts.


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I it is not adust the /oving coil by loosening the three locking screws tosuch a position where the e-uilibriu/ voltage is around /inus ' volt.

Ater adusting eed 3ero volt through set point and note down the powerpiston lit. 0ini/u/ reading<

@eed '8 volts through set point voltage and note down the power pistonlit. 0a7. reading<

#he dierence in lit between /a7i/u/ and /ini/u/ lit should beappro7i/ately )8//.

;ary the controller ro/ /ini/u/ to /a7i/u/ position and note downthe output o Collins II and I in the /ini/u/ and /a7i/u/ position.

#he Collins I and II out put should be ?:.); to J:.);. Adust the Collins0AH 1) C& 88'A 0AH 1) C& 88' to get this voltage i it is notachieved.

Increase the set point voltage and hold the power piston lit A 85 o $2C0AH 1) By 88' about * to :// as obtained in 2ydraulic &overnorsetting.

Check the 2P secondary oil pressure and adust the our ollow up pistonsA 8' o $2C 0AH 1) By 88' e-ually to get 2P secondary oil pressure o (.8 kg=c/+ when power piston lit is * to :// as obtained in 2ydraulic&overning setting.

Increase set point voltage and hold the 2P secondary oil pressure at (.+1kg=c/+.

Increase the set point voltage in steps on one volt and note down Collinsout put I and II and power piston lit.

Check whether the 2P secondary oil pressure obtained is e-ual to thehydraulic governor characteristics set earlier.

$nsure by plotting the curve that a closing and opening reserve o ( to )// is available or power piston A 85 o $2C 0AH 1) By 88'.


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$nsure the start o opening o 2P control valves re/ains at (.8 kg=c/ + o 2P secondary oil pressures as set earlier during hydraulic controlleradust/ent.

Check and ensure that the 2P control valves open with respect to 2Psecondary oil pressure as per the governor characteristics ro/ ull closeto ull open position. Drg No. ',''188,86+88<

Plot the ollowing curves.

et point voltage versus Collins I and II voltage

Et'$% %$5'%t$o" >o5 )2% 5 t%6" .

$nsure the ollowing settings in coordination with C4I = electrical$ngineers.

$nsure the starting device percentage position at control roo/ indication

ro/ 8 to '88K /atches with ull close to ull open position.

Adust the our nu/ber o li/it switches provided on the starting deviceor 'K 1+K )5K and '88K 0AH 1: C&88'C'D'@ 4 'B respectivelyo starting device opening.

$nsure the speeder gear percentage position at control ro/ indicationro/ 8 to '88K /atches with ull close to ull open position.

Adust the li/it switches in ull open direction and ull close direction oro 2P stop valves and IP stop valves.

$nsure the open and close indication is appearing or all the stop valve atcontrol roo/.Adust the percentages position o the control valves o 2P in theirrespective position indicators.

$nsure the local scale indicator /ounted on the body o o 2P controlvalves in the ully open and ully closed directions.Correct the scale i re-uired

$nsure that the potentio/eter or e7traction valves are indicating thevalve opening position is calibrated.


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$nsure the e7traction NR; solenoid 0AH )' AA 8+' 8++ 8+1 8+) 8+:8+5 8(88('8(* 4 8(5 indication at control roo/ or energi3ed and de,energised condition.

CONDUCT TE FOLLOWING CES AT 3000 RPM

Check whether the turbine speed is e7actly (888 rp/.

Carry out oil inection tests

#he actuation o over speed bolt is indicated on the test rack by la/psand can be observed by the actuation o li/it switches 0AH '8 C& 88' J88+ provided on the !2 o ront bearing pedestal.

Note down the test oil pressure at which over speed bolt nu/ber oneco/es out and over speed bolt nu/ber two co/es out.

Repeat the test two to three ti/es and check whether test oil pressureco/es to a steady valve.

#esting o :K regulation o 2ydraulic &overnor.

Check the /achine is running on electro hydraulic or 2ydraulic.

I it is running on $lectro 2ydraulic change over to 2ydraulic by closingthe isolating valve in the secondary line to $2C,0AH 1) AA )8+


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$nsure beore carrying out actual over speed test the both over speedgovernors are operative by conducting oil inection test as e7plainedabove$nsure that all speed indicators and recorders are indicating the sa/espeed when the /achine is at (888 rp/ and at (+'8 rp/.

$nsure that turbine is running at a speed o (+'8 rp/ with starting deviceand speeder gear in /a7i/u/ position.

Press continuously the over speed testing lever provided in the start andload li/iting device 0AH 1* by 88' by watching the speed indication.

$nsure the speed raise is steady and the /achine trips at appro7. '')J8.) K o rated speed< by the actuation o over speed governors.

Note Release the lever i the over speed governor is not acting at '')J8.) K o rated speed. Adust the over speed governor bolt to act '')

J8.) K o rated speed.

Record the speed at which over speed governors ' or + acts.

Ater trip out when /achine reaches (888 rp/ note down the coastingdown ti/e ro/ (888 rp/ to turning gear speed at '88,rp/ interval.

Bring back the /achine to the rated speed or urther checks.


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;0 E?t# 'o)) %'%,t')

D)$" '8.$',"t) !o' )tt$" # ov'"o'

N Bellow !itAu7 ec. "il

Pressureecondary oil

pressureControl valve

lit

'. 8 +.( (.8 8

+. 8.)'5 +.)1 (.+) ''.)(. ' +.:* (.) +(

1. '.)( (.8' (.:1 ()

). +.8 (.++ (.65 1)

*. +.) (.1* 1.++ )6

:. (.8 (.*6 1.1* :*

5. (.+5 (.5+ 1.*8 6'

6. (.) (.6+ 1.: ''+

'8. (.: 1.8+ 1.5 '18

''. 1.' 1.+ ).8 '6)


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@0 T)t 'o't !o',%t

(A* Fo' # Gov'"o':

2ydraulic conveyor Below lit # Device 2P

0easured Calculated 0easured Calculated 0easured Calculated "P

(/* Fo' Et'o # Gov'"o':

;olt CollinFs

I

CollinFs

II

"P

2P

$2C K

8

'

+

(

1

)

*

:


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5

6

'8

(.11*

*.'):

:.(:8

(C* Fo' v%v):

N Bellow !itAu7 ec. "il

Pressureecondary oil

pressureControl valve

lit


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0 R!'"

a. #urbine "40 /anualb. Drawing no. ',''188,86+88

B0 V'$!$%t$o" 'o))

;eriication points are included in 1.8 general /ethods

;eriication re-uire/ents, all unctional re-uire/ents have beenlisted in general /ethod. Also please reer Drawing no. ',''188,86+88.

100 L$)t o! %""?.'

Drawing no. 1-11400-09200(Please refer supplied drg)


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APPENDIX

VERIFICATION TABLE

COMMISSIONING PROCEDURE FOR GOVERNING SYSTEM

COMMISSIONING PROCEDURE NO.

S/.NO

ACTIVITVERIIED

ACCEPTANCECRITERIA

VERIING AGENC

CERTIICATION VERIING AGENC

PROCEDUREVERIICATION

INSPECTIONITNESS

UNCTION(A/ TEST

RESU/TVERIICA(TION

GENERA/REMARS

1 P" %efe%4.0

P" %efe% 4.0


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ANNEXURE

NUCLEAR POWER CORPORATION OF INDIA LIMITED(A Govt. of India Ente!i"e#

TARAPUR ATOMIC POWER PRO$ECT%&'

COMMI))IONING PROCEDURE ACCEPTANCE NOTE

Co)!%a&!o% &o$$++o))g '%o&e*#%e )#$be% fo% !e &o$$++o))g of GOVERNING SYSTEM +#b$!!e* b E/ #)*e% !e&o)!%a&! )#$be% + %e&e8e* a)* fo#)* &o)fo%$)g !o !e%e9#%e$e)! of NPCI/ +'e&f&a!o)+ : No%$+ : e)&e a&&e'!e*.

Co$$++o))g '%o&e*#%e )#$be%;

Co$$++o))g '%o&e*#%e !!"e;


NAME ' DE)IGNATION )IGNATURE

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