ML17325A556

Forwards Addl Info on Emergency Diesel Generator Surveillance Interval Extensions for Cycle 6,per NRC 871218 Teclon Request

ML17325A556
Person / Time
Site:	Cook
Issue date:	12/23/1987
From:	Alexich M AMERICAN ELECTRIC POWER SERVICE CORP.
To:	Murley T NRC, NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
AEP:NRC:0916AG, AEP:NRC:916AG, NUDOCS 8712290389
Download: ML17325A556 (21)

Text

REGULATO INFORMATION DISTRIBUTION . TEM (RIDS)

ACCESSION NBR: 87122'70389 DOC. DATE: 87/12/23 NOTARIZED: NO DOCKET 0 FACIL: 50-316 Donald AUTH. NAME C. Cook Nuclear Power P I

AUTHOR AFF IL ATION lant'nit 2i Indiana 5 05000316 ALEX ICHOR M. P. American Electric Power Service Corp.

REC IP. NAME REC IP IENT AFFILIATION MURLEYs T. E. NRC No Detailed Affiliation Given

SUBJECT:

Forwards addi info on emergency diesel generator surveillance interval extensions for Cycle 6> per NRC 871218 tee lan request.

DISTRIBUTION CODE: A001D COPIES RECEIVED: LTR ENCL SIZE:

TITLE: OR Submittal: General Distribution NOTES:

REC IP IENT COPIES REC IP IENT COP IES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD3-3 LA 0 PD3-3 PD 5 5 WIGGINGTONi D 1 INTERNAL: ARM/DAF/LFMB 1 0 NRR/DEBT/ADS 1 1 NRR/DEST/CEB 1 1 NRR/DEST/MTB 1 1 NRR/DEST/RSB 1 1 NRR/DOEA/TSB 1 1 NR S/ILR9 1 1 OGC/HDS1 0 01 1 RES/DE/EIB 1 EXTERNAL LPDR 1 NRC PDR 1 1 NSIC 1 1 TOTAL NUMBER OF COP 1 ES REQUIRED: LTTR 20 ENCL 17

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1 Cy

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American Electric Power Service Corporation 1 Riverside Plaza Columbus, OH 43215 614 223 1000 8

AEP:NRC:0916AG Donald C. Cook Nuclear Plant Unit 2 Docket No. 50-316 License No. DPR-74 ADDITIONAL INFORMATION ON SURVEILLANCE INTERVAL EXTENSIONS FOR UNIT 2 CYCLE 6 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555 Attn: T. E. Murley December 23, 1987

Dear Dr. Murley:

This letter responds to requests for additional information made by your staff during a telephone conversation on December 18, 1987.

Specifically, we were asked to provide supplemental information regarding the diesel generator surveillance interval extensions that we requested in our letter AEP:NRC:0916AE, dated October 28, 1987. The information requested is contained in the attachment to this letter.

This document has been prepared following Corporate procedures which incorporate a reasonable set of controls to ensure its accuracy and completeness prior to signature by the undersigned.

Sincerely, M. . Al xich Vice President cm Attachments cc: John E. Dolan W. G. Smith, Jr. - Bridgman R. C. Callen G. Bruchmann G. Charnoff NRC Resident Inspector - Bridgman A. B. Davis - Region III 87i2290389 87>~3ib PDR ADocx 0 PDR p

'l Attachment to AEP:NRC:0916AG Supplemental Information Regarding Diesel Generator Surveillance Interval Extensions

Answers to NRC Questions of 12/18/87 Regarding Cook Nuclear Plant Emergency Diesel Generator Surveillance Extensions Problem Areas from Past Ins ections 4

Completed packages of Maintenance Procedure MHP 4030STP.046 (Emergency Diesel Generator System 18-month Inspection) were reviewed for identified equipment deficiencies by the Plant Maintenance Department on 12/18 and 12/21/87. Packages from the previous 5 inspections for the Unit 1 diesels, and from the previous 4 inspections for the Unit 2 diesels, were reviewed.

The vast majority of these deficiencies were in the category of minor gasket leaks. These leaks are judged to have had no effect on the operability or reliability of the affected diesel generator. The other categories were:

1. Broken intake or exhaust valve springs (5 occurrences)

2. Failed valve lifters (6 occurrences)

3. Re-torquing of a cylinder head bolt and a foundation bolt (1 occurrence each)

4. Crankshaft deflection out of specification (4 occurrences all in 1984 or earlier)

5. Missing nut or lockwire (1 occurrence each)

6. Injector failure or popping pressure out of specification (3 occurrences)

7. Main bearing found worn upon inspection (1 occurrence)

These items would maintenance.

all fit in the category of routine Emer enc Diesel Generator Manufacturer's Recommendation on Surveillance Interval Extension The Cook EDGs were manufactured by Worthington Compressor Co. of Buffalo, NY. The company was merged with Dresser-Rand of Painted Post, NY in 1987.

Dresser-Rand technical personnel were contacted by AEPSC on 12/21/87. They stated that extending the interval of the

Page 2 surveillance inspections until June 1, 1988 should cause no problems. They also stated that no additional inspections were recommended for the interim period from January 1 to June 1, 1988.

As a point of reference, the manufacturer's standard recommendation calls for an inspection of similar scope every 4000 hours0.0463 days <br />1.111 hours <br />0.00661 weeks <br />0.00152 months <br /> of operation. This recommendation applies to diesels in continuous operation and is therefore not directly applicable to the Cook EDGs. For comparison, the Cook Unit 2 EDGs have each incurred approximately 1500 total hours of operation.

Emer enc Diesel Generator Reliabilit Reliability for the last 100 starts is 100% for 2AB diesel and 99% for 2CD diesel.

Effect on Blackout Tests Extension of the surveillance inspection interval should not affect the ability of the EDGs to successfully perform the blackout tests specified in the Technical Specifications.

The main problem area of past blackout tests has been in the area of load rejections. During a full load (3500 kw) rejection, approximately 80% of the Technical Specification overspeed margin (7.5%) had been used. The amount of overspeed margin used in subsequent tests has been reduced to approximately 55% by tuning and adjustment of the governor, and of fuel rack linkages. We believe this problem to be corrected, however, it is not considered relevant to the extension of the surveillance interval since these components are not subjected to substantial wear or degradation.

Results of Last lns ection The most recent 2AB EDG inspection was completed on 5/3/86.

No major problems were found. One main bearing that was inspected was found to be worn on the lower half. The bearing was replaced.

The most recent 2CD EDG inspection was completed on 6/3/86.

No major problems were found during the inspection.

Following the inspection, during a post-maintenance test run, a main bearing failure occurred. This failure caused damage to the crankshaft and b=se. The engine was rebuilt with new parts and tested successfully.

~- Page 3 Desi n and 0 erational Chan es to Enhance Main Bearin Reliabilit Two main bearing failures have occurred on the Cook EDGs since initial criticality of Unit 1 in 1975. The failures have never been attributed to a specific cause or'causes.

Several improvements in the areas of design and operation have been or will be implemented:

1. Improved method of checking crankshaft web deflection. (Completed)

2. Reducing oil sump temperature from 165F to 145F.

(Completed on Unit 1)

3. Installation of a main bearing metal temperature indication/high temperature trip system.

(Completed on Unit 1)

4. Elimination of Tech Spec requirement to run EDG at 3850 kw (104 overload) for 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> during the post-maintenance 24-hour run prior to blackout testing.

(Completed on Unit 1) 5 ~ Change in the maintenance procedure to ensure that the bottom half, as well as the top half, is inspected any time a main bearing assembly is opened for inspection. (Completed)

6. Change to Tech Spec to allow "slow" starts for most surveillance starts, consistent with manufacturer's recommendations and Generic Letter 84-15.

7. Installation of an improved-design center main bearing. This design will improve the load-carrying capability of the bearing and improve the oil supply to the predominantly-loaded area of the bearing.

G. D. Hines 12/22/87

SURVEILLANCE TEST DUE DATES

1. Maintenance Inspection (T/S 4.8.1.1.2.c.l)

Due Date Approximate length Diesel Last Test Date includin 25% race of Extension 2AB 05/03/86 03/18/88 3-1/2 months 2CD 06/03/86 04/18/88 2-1/2 months

2. Blackout Testing (T/Ss 4.8.1.1.2.cd 2 through 4.8.l.l.c.12)

Due Date Approximate Length Diesel Last Test Date includin 25$ race of Extension 2AB 07/01/86 05/16/88 l-l/2 months 2CD 07/01/86 05/16/88 1-1/2 months

~Assumes that the fuel is unloaded from the core on July 1, 1988.

1 SPECIFIC DIESEL GENERATOR RELATED TECHNICAL SPECIFICATION EXTENSIONS The diesel-generator related Technical Specifications which we are requesting extensions for are listed below:

Test 4.8.3..1.2.C.1 Diesel generator inspection per manufacturer's recommendations.

4.8.1.1.2.C.2 - 4.8.1.1.2.C.12 Diesel generator "blackout": testing 4.8.1.2 Node 5 and 6 reference to Technical Specification 4.8.1.1.2.

4.4.11.3 PORV and block valve emergency power supply.

4.7.4.1.b ESW automa=ic valve actuation.

The relevant Technical Specification pages, with the specific extension Technical Specifications circled, are attached for the reviewer's convenience.

3/4.8 ELECTRICAL nOWER SYSTEMS 3/4.8.1 A.C. SOURCES OPERATING LIMITING CONDII.ON:OR OPERATLON 3,8.1.1 As a minimum, tne following A.C. electrical power sources shall be OPERABLE:

a, Two physically independent circuits between the offsite trans-mission network and the onsite Class lE distribution system, and

b. Two separate and independent diesel generators each with:

l. A day fuel tank containing a minimum volume of 70 gallons of fuel,

2. A separate fuel storage system containing a minimum volume of 42,000 gallons of fuel, and

3. A separate fuel transfer oumo.

APPLICABILITY: MODES.1, 2, 3 and 4, ACTION:

a. With either an offsite circuit or diesel generator of the above requi red A.C. el ectri ca power sources inoperabl e, demons trate 1

the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirements 4.8.1.l.l.a and 4;8.1.1.2.a.4 within one hour and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter; restore at least two offsite circuits and two diesel generators to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

b. With one offsite circuit and one diesel generator of the above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A C. sources by performing

~

Surveillance Requirements 4.8.l.l.l.a and 4.8.1.1.2.a.4 within one hour and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter; restore at least one of the inoperable sources to OPERABLE status within 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> s or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLO SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. Restore at least two offsite circuits and two diesel generators to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> from the time of initial loss or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours.

D. C. COOK - UNIT 2 3/4 8-1

ELECTRZCAL POWER SYSTEMS ACTZON {Continued) c, With two of the above reauired of site A.C. circuits inoperable, demonstrate the OPEPiBZLZTY of two d'esel cenezators by performing Surveillance Recuireme..t 4 8 1 1 2 a.4 within one hour and at least

~ ~ ~ ~

once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> the eafter, unless the diesel generatozs are alzeady operating; zestore a" least one of the inoperable offsite sources to OPERABLE status w thin 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be in at least HOT STANDBY within the next 6 hcurs. with only one of site source restozedp restore at least two offs'=e c>> 'uits to OP PEBBLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> from time of initial loss cr be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDCWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

d. with two of the above recuired diesel generators inoperable, demonstzate the OPERABZLZTY of two offsite A.C. circuits by pezforming Surveillance Requirement 4. 8. l. 1. l. a within one hour and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> the eafter; restore at least one of the inoperable diesel generators to CPERABLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> oz be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hcurs. Restore at least two diesel generators to OPERABLE status'within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> from time of initial loss or be in least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the fol'owing 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

SURV ZLLAÃCE zvQU B-.v-.y S 4.8.1.1.1 Each of the above required irdepe..den= =ircuits between the offsite t ansmission network a..d the cnsite Class 'E d's='= bution system shall be:*

a. Determined OPERABLE>> at least once per 7 days by verifying correct breake alignments, indicated power availability, and

b. Demonstrated OPERABLE at least once per 18 months by transferring the uni" oower souzce automatically from the ..ormal auxiliary source to the pre;erred rese ve source and by transfe 'ng manually to the alternate reserve source, 4.8.1.1.2 Each diesel generator shall be demonstrated OPERABLE:'.

Zn accordance w'th the frequency specified in Table 4.8-1 on a STAGGERED T:"S. BASZS bv:

1. Vez'fying =he fuel level in the day fuel tank.

2. Verifying =he "uel level in the fuel storage tank.

.he provisions of Spec'f'cat'on 4.0.6 are applicable.

D. C. COCK - LNZT 2 3/4 8<<2 Amendment No. 78

ELECTRICAL POME" ""ST= !S SUR!lEIL! ANCE RE"!g:R-".'!E;3"S ",'"ontinued)

3. 'ler ;y nc :he fuel iransfer pump can be started and tr ns-.e. s -..ei ;rom the storage system to the aay tank.

4. 'ler ;yina the diesel starts from ambient condition and acc ie. a-.es to at least 514 rpm in < 10 seconds.

5. Ver ifying the generator is loaded to > 1750 kw, and operates -.or. > 60 minutes and verifying that the generator output breaker to the emergency bus is OPERABLE.

6. Verifying the diesel generator is aligned to provide stana"y power io the associated emergency busses.

At least onc per 92 days by verifying that a sample of diesel fuel free the fuel storage tank obtained in accordance with AST>'l-"273-65 's uithin the ac eptable limits specified in

!able 1 o= AS!'1-0975-74 when check="'or viscosity, water and sediment.

c, At least once per 18 months during shutdown by:

Subjec:ing the diesel to an ';"spection in accordance with proceaures prepared in conjunction with i: s manufacturer's recommendations 'or this class of standby service.

Ver;;ying that ihe automatic sequence timing relays are OPER"BLE with each load sequence =ime within + 5.'"o of i;s required value and that each load is sequencea on within ihe design allowable time limit.

'leri,ying the generator capabi!ity to reject a load of >

600 ku uhile maintaining voltage at 4160 + 420 volts and req ency at 60 + 1.2 Hz.

"leri;ying the generator capaoili iy to reject a load of 3500 '<w without exceeding 75:l of the difference between ncminal soeed and the overspeed trip setpoint.

mulating a loss of offsite pcwer by I

itself, and:

Verifying de-energization of the emergency busses and load sheading from the emergency busses.

0. C. COOK - Ui'ii 3/4 8-3

~ ~

h.LECTRICAL Vv'~cR SY

'URVKiLLAllC"=R"-"UiR-.M-..(TS (Continue>

b) Verifying the diesel starts from ambient condition on the auto-start signal, energizes the emergency busses with "er.-..anently connec"ted loads, energizes the auto-connected shutd"wn loads through the load sequencer and ."pera:es fcr ' minu:es while its generator :s loaded wi:h :he shu"down loads.

Veri fying .'.hat cn an .S.= ac.uaticn 'est signal (without

'loss of offsite -ower ) the d':esel generator starts on the auto-star. s~gnal and operates on standby '.or '

minutes.

Q7. Verifying .hat "n ~ simulated loss of the diesel gener-ator (with orfsite vower not available), the loads are shed from .he emergency busses and hat subsequent loading o; :he diesel generator is in accordance with design requirements.

r

8. Simulating a loss of f offsite f power in conjunction with t an ESF actuation

~ '.t e st signal, g and a) Veri,ving de-energization of the emergency busses and load shed".',"." from the emergercy busses.

b) Veri;yinc << e diesel starts f."m ambient condition

~

on the auto-start signa 1, ener: :es the emergency busses with pe..<<anently connec:e". loads, energizes the auto-connected emergency ,=:ident) loads '.hrouch the load sequencer and operates 'or . 5 minutes while its generator is loaded with  :.-.e emergency loads.

c) Veri,ying that on diesel generator tr ip, the loads are shed from the emergency buses and the diesel re-starts on the auto-s <<art s; gnal fc lowing manual 1 resetting of the diesel trip lockout relay, '.he emergency buses are energized w;".h permanen:ly connected loads the auto-conne . d mer-ency loads are energized through the load sequencer and the diesel opera es -,or >5 minutes while i: s generator is loaded with emergency loads.

d) Veri fving tha t a I ) diesel gener a tcr '.ries, except engine overspeed and generator di fferential , are au'tcma << i ca y bvpa s s ed upcn os s 1 1 1 o.'ol ta ge on the emer"ency bus and/or safety injection ac:ua << Ion signal.

Verifying the diesel generator opera t~s for a 1 ast 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Our,'ng the '.Irst 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> of thl s tes t, he diesel generator shall be leaded to 3 0 kw and during t(ie rema inirg 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> of this test, ". e diesel genera Qr shall be loaded to .'500 xw. 'Jithin 5 minutes af (.~r corn pleting this 2>>'cur test, repeat Sp ecification '.8.1.1.2.c.S.

0. C. CCQK - U'llT 2 3/v 8-3a hi <<;noh'>out t(o. 22, ~in L

ELECTRICAL POWER SYST=PIS SURVEILLANCE RE UIRE.'1E.'ITS (Continued 10 f i that :he auto-connected Yerifying t loads o each diesel generator do c rot exceed e the 2 hour2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> rating of 3850 kw.

11 f Yerifying "iesel genera or's caoability to:

.'.",e d a) Synchronize with the offsite power source while the generator is loaded with its emergency loads upon a simulated restoration of offsite power.

b} Transfer i.s loads to the of. site power source.

c.} Proce d through its shutdown sequence.

12. Verifying tnat with the diesel generator operating in a

~

test mode, a simulated safety injection signal overrides tne test mode by (1} returning the diesel generator to

~

stancby oceraticn and (2} automatically energizing the emergency loads with cffsite pcwer.

d. At least ence per 10 years or after any ;..c=.'rications which could affect diesel generator interdepence",ce by starting. both diesel generators simultaneously, during s.'"utdown, and verifying that both diesel generators accelerate tc -. least 514 rpm in

( 10 seconds.

.8.1.1.3 Recorts - All diesel generator failures, valid or non-valid, hall be reportea to the Conmission pursuant to Specification 6.9.1, If he number of failures in he last 100 valid tests (on a per nuclear nit basis) is ) 7, the report, shall be supplementec to include the dditional informaticn r cormended i'n Regulatory Position C.3.b of egulatory Guide 1.108, Revision 1, Augus- 1977.

0. C. COOK - U!LIT 2 3/4 8-4

iAHL:. 4 8-1

..'.:.":-L G=N:RA "R .5 iC:.""DUL"-

Number of;ai I~res Las- 1 "0 'la" s:= i st Freo~uenc At least once per 31 days At least once per 14 days At least once per 7 days At least once per 3 days Cri eria -.". "eterminirg number of fai'.res and number of valid

ests shall be in accordance wi h Regu'..--..ry position C.2.e of Regul a tory "=vide . 108, Revi s ion 1, Au=..:: 1977, where the last 1

100 tests are determined on a per nucle= Jnit basis.

0. C. COOK - U'l " > 3/4 8--'a

0 t TT hf OP 3.4.11 Three power operated elief valves (PORVs) and their associated block valves shall ba OP~L"-.

KXLQE:

a ~ PORVs inoperab': *

1. With o,. PCB.V nope able, within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> e cher restore che PORV to OPB.%LE status or close the assoc'aced block valve and remove paver from the b'ock valve; otherwise be in ac lease HOT STANDBY vichin che next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHtJTDOlVi vichin the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

2. j 7 th rvo PORVs inoperable, within 'our eithe restore ae least one PORV to OP~L"= stat s or close the associated block valves and re ove power from che olock valves; restore ac least one PORV to OP~LZ sea~ vithin the following 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in HOT STANDBY vichin che ne:..= 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOl if vithin the Following'30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

3. arith ~"~e PORVs inoperable, vithin 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> either reseore a" 'ease one of the PORVs co OPDA3L". sea~ or close their associated block valves and remove powe" rom che b'ock va'ves and be in HOT STAÃ)BY vithin eha nexe 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and COLD Si'.UTDO~N vithin the following 30 hou s .

b. Block valves inoperable:*

l. Pith ~ block valve inoparaole, within 'our eiehar (1) reseora che block valve eo OP~LZ scaeus, or (2) close the block valve and rcmove power from the block valve, or (3) close the associated PORV and remove power from the assoc'aced solenoid valve; otherwise, be in ae least HOT STAR)BY vi&in the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SciVii04H within the folloving 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

• PORVss isolated co 1~it RCS leakage th ough their saaes and the block sh<<eot isolate this 'eakage are valvess shut noe considered inoperable.

C. CQQg - ggZT 2 3/4 4-32 A?~DIGHT HO. 82

s MI Th) Q QQ T'QR Q<<c'J 'TTQg (Co <<~<<used) 2, With -~o ot -,...-e block va ves inope able, within 1 hou" e'ther {1) restore a "otal of at 'east two b'ock valves to OP-""~LE status, or (2) close the block valves and e .ove power rom the block valves, or (3) close "he associated PORVs and x'emove power from their assoc'ared scl nnid valves; and apply the poxtion" of ACTION a.2 or a.3 above for inoperable PORVs, re'ting to OP&A..ONAL .'LODE, as appropr'ate.

Wj.th >OV7s and b ock va>v~ ..ot in che same line inoperable,

• within 1 hou" e ther (1) restore the valves to OP%ABLE status or (2) close and de-energize the othe. valve in each line.

Apply the port'ons of ACTION a.2 or a. 3 above, relating to OP~TIONAL .'fCDE, as appropr'ate for two or three ~> ~~e unavailable .

d. The provisions o Spec ication 3.0.4 are not applicable.

S RV"I < Rr U R"-u~~

.5 4.4.11.1 Each of the three PCRVs shall be demons-". "ed OPERABLE:

a At least once per 31 days by perfox~nce -.= a CK<4~rL HRiCTIONAL TEST, excluding valve operation, and b, At least once per 18 months by performance of a CHA'GAEL CALIBRATION.

4.4.11.2 Each of the three block valves shall be demonstrated OPE~LE at.

least once pex'2 days by operating the valve through one complete cycle of full travel. The block valve(s) do not have to be tested when ACTION 3.4.11.a or 3.4.ll.c is applied.

4.4.11.3 The emergency power supply for the PORVs and block valves shall be demonstrated OPERABLE a" least once pex'& months by operating the valves through a complete cycle of full travel while the emergency buses axe energized by the onsite d'esel generators and onsite plant batte i.es. This testing can be performed in con]unction with the requirements of Specifications 4.8.1.1.2 ' a"..d 4.8 '.3.2.d.

• PORVs i.solated to limit RCS leakage through their seats and the block valves shut to isolate thi.s leakage ax'e not considered inoperable.

9. C. COOK - UNIT 2 3/4 4-33 ~mme No. 82

PLANT SYST",'iS

/4 7 4

"-"""g . <r>"'r- HAT-2 SYST 1 LIMNI "ING CONOIT:ON ."-."R ')P=.";~.:"N 3.7.4.1 At leas-.':wo ','nde.encent essent al service water looos shal'i be OPERABLc,.

APPLICABIL!:Y: MODES 1, 2, 3 and 4.

ACiIOII:

c I>lith Only One ServiCe water 1OOp OPLRABLE, reStOre'at leaSt tWO lOOOS to OP RABLe. status within 72 hours or be in. at least HOT STANOBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and n COLD SHUT~0'AN within tne following 30 nours.

SURVE ILL~"iC"- R='"U! R"=~'.5'ITS

.7.4.1 At least two essential service wate" '".ops shall be demonstrated BL"=

At least once per 31 days by verify no that each valve (manual, power operated or automatic) servic'ng safe y related equip-ment that is no" locked, sealed, or :therwise secured in position, is in its correct position.

At least once'er 18 months dur nc snutdown, 5y veri,ying that each automatic valve servicing sa=e:y related equi" ment actuates to its correct pos',t'on on 'afety In',ec:ion tes:

signal,

0. C. COCK - "NI; 2 3/4 7-13