ML20009F063

Requests Info Re Station Blackout (Unresolved Safety Issue A-44).Questionnaire & LER Documentation Encl.Reply Requested within 120 Days

ML20009F063
Person / Time
Site:	Beaver Valley
Issue date:	07/21/1981
From:	Varga S Office of Nuclear Reactor Regulation
To:	Carey J DUQUESNE LIGHT CO.
Shared Package
ML20009F064	List: ML20009F063 ML20009F065
References
REF-GTECI-A-44, REF-GTECI-EL, TASK-A-44, TASK-OR TAC-68510, NUDOCS 8107280645
Download: ML20009F063 (21)

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NRC & Local PDR TERA ORB #1 Rdg Pflorian GIB Rdg KKniel IJUL 21 1961 DEisenhut FSchroeder RPurple TMurley Docket tio. 50-334 TNovak PBaranowsky JRoe JButts ifr. J. J. Carey, Vice President Duquesne Light Company yl3 fluclear Division Post Office Box 4 Svarga harr Shippingport, PA 15077 h

Dear fir. Carey:

he t es

Subject:

Infomation Request Regarding Station Blackout, Unresolved Safety Issue A-44 Geaver Valley Power Station, Unit 1 3

Ine flRC starf is currently addressing Unresolved Safety Issue (USI)

A-44, Station Blackout. The purpose of this work is to establish the safety significance of an event resulting io a loss of all alternating current power and, if significant, to consider the need for any specific changes. Over the past several years infomation requests have been forwarded which requested information that is being used in the USI analysis. Your interest and cooperation in the past have been appreciated.

At this time the USI A-44 effort i. being directed toward detemining the reliability of the onsite standby diesel generators. The enclosed questionnaire has been prepared to provide accurate operating experience to serve as a basis for such a determination. fiore specifically, its purpose is to obtain.nore detailed data thr1 were available in previcus diesel generator studies such as AEC-00E-ES-002,fiUREG/CR-0660, and HUREG/CR-1362.

The questionnaire (enclosure 1) requests infomation in tabular fom and solicits data for the years 1976 through 1930, inclusive. There are four tables enclosed:

(1) Diesel Generator Operations Data (2) Diesel Generator Scheduled Down Time Record, (3) Diesel Generator Unscheduled Down Tine Record, and (4) Onsite Energency Diesel Generator and Auxiliary Equipment fiodification Record. Also enclosed are examples of completed tables as well as a clarification of what should be entered. P'iease note that, although it may appear that only Licensee Event Report (LER) information is sought, data on all diesel generator malfunctions, independent of whether an LER was prepared, is requested.

Please find enclosed LCR documentation (enclosure 2) presently docket?d for your facility. You are requested to review these and to indicate if there are other reports which have not been enclosed. Finally, please find enclosed a copy of the appropriate portions of your response (enclosure 8107280645 810721 DR ADOCK 05000 owcn >

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ouey OFFICIAL RECOffD COPY mm. u-mm

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,. Mr. J. J. Carey

3) to our letter of March 6,1978 which requested related, but different, information. This is being forwarded for your information only and should aid in preparinq Tables 1 through 4 In consideration of the time and effort necessary to obtain this information, the completion of Table 4 shouid be considered voluntary. However, it should be noted that if operational and hardware modifications are not identified, the positive or negative influence of these features on emergency alternating current power reliability may be lost in the evaluation of the data. The expected effect is that our generic reliability estimates may be lower than that which actually exists.

The above information is requested in accordance with Sections 103.b.(3) and 161.c of the Atomic Energy Act of 1r54, as amended. To meet our schedule requirements for the resolution of USI A-44 and to incorporate as much real experience as possible into the reliability nodel for emerqency power systems, it is requested that your response be provided within 120 days of the receipt of this letter. However, if this schedule is incor.31 stent with priority requirements for other licensing work, please provide us with your proposed date of response within 30 days.

We plan to complete our analysis of this data by February 1982. Your data snould be provided by that time so that an accurate assessment of onsite alternating current power sources can ce made.

Mr. P. Baranowsky has been designated Task Manaqer for USI A-44.

Should you have any questions, please feel free to contact him at (301) 443-5921. Your time and efforts are appreciated.

DISTRIBUTION bbcket File 50-334 OELD Sincerely, NRC & Local PDR I&E (3)

TERA S. Varga Oricinal signed by:

ORBh1 Reading D. Chaney S. A. Varga GIB Readina C. Parrish D. Eisenhut ACRS (16)

Steven A. Varga, Chief R. Purple J. Heltemes Operating Reactors Branch #1 T. Novak P. f'orian Division of Licensing J. roe K. Kniel

Enclosures:

F. Schroes.r As Stated

i. Murley P. Baranowsky cc: w/enclosuresh Botts See next page This request for information was approved by the Office of Management and Budget under clearance number 3150-0067 which expires May 31, 1983.

Coments on burden and duplication nay be directed to the Office of Manaqement and Budget, Washington, D. C.

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Mr. J. J. Carey Duquesne Light Company Mr. R. J. Washabaugh, QA Manager Gerald Charnoff, Esquire cc:

Duquesne Light Company Jay E. Silberg, Esquire Quality Assurance Department Shaw, Pittman, Potts and Trowbridge Post Office Box 4 1800 M Street, N. W.

Shippir.gport, Pennsylvania 15077 Washington, D. C.

20036 Mr. J. A. Werling Karin Carter, Esquire Station Superintendent Special Assistant Attorney General Duquesne Light Company Bureau of Administrative Enforcement Beaver Valley Power Station 5th Floor. Executive House Post Office Box 4 Harrisburg, Pennsylvania 17120 Shippingport, Pennsylvania

'5077 Mr. Roger Tappan Mr. T. D. Jones, Manager Stone & Webster Engineering Corporation Nuclear Operations P. O. Box 2325 Duquesne Light Company Boston, Massachusetts 021 07 Post Office Box 4 Shippingport, Pennsylvania 15077 Mr. F. Noon R & D Center Mr. F. J. Bissert, Manager Westinghouse Electric Corporation Nuclear Support Services Building 7-303 Duquesne Light Company Pittsburgh, Pennsylvania 15230 Nuclear Division Post Office Box 4 Marvin Fein Shippingport, Pennsylvania 15077 Utility Counsel City of Pittsburgh Mr. R. M. Mafrice, Nuclear Engineer 313 City-County Building Duquesne Light Company Pittsburgh, Pennsylvania 15219 435 Sixth Avenue Pittsburgh, Pennsylvania 15219 Mr. John A. Levin Public Utility Commission Mr. R. E. Martin, Nuclear Engineer P. O. Box 3265 Duquesne Light Company Harrisburg, Pennsylvania 17120 435 Sixth Avenue Pittsburgh, Pennsylvania 15219 Irwin A. Popowsky, Esquire Office of Consumer Advocate Mr. N. R. Tonet, Fbnager 1425 Strawberry Square Nuclear Engineering Harrisburg, Pennsylvania 17120 Duquesne Light Company Nuclear Division Charles E. Thomas, Esquire Post Office Lux 4 Thomas and Thomas Shippingport, Pennsylvania 15077 212 Locust Street Box 999 Mr. J. D. Sie ber, Fbnager Harrisburg, Pennsylvania 17108 Nuclear Safety & Licensing i

Duquesne Light Company Resident Inspector Nuclear Division U. S. Nuclear Regulatory Commission Post Office Box 4 Post Office Box 298 Shippingport, Pennsylvania 15077 Shippingport, Pennsylvania 15077 I

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TAbt.E2 Diesel Gan2 rotor Schsduled Downtime Rscord -

Plext Name Calender Year 19_

Unit No.

Ilours of Downtime Reason for Reactor shutdown Reactor not shutdown Comments Downtime DGf DUF DUF DGF DGF DGF DGI DGF DGI DGF Scheduled Hsintenance i

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Tine DG is unavailable i

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Encloruro 1 - Paga 3 TABLE 3 Diesel Cenarctor Unscheduled Downtimo Itecord Plant Namie Calendsr Year 19 _

Unit No.

1

""Y E " #*E # *

~

LER Abstract &

Downtime Hours

~

failure under emergency conditions, please explain here, (Refer to atecl ~

i 'a r t s, Del - Repair /

Refer to attached LERs or the failures listed in Table 1.

ad LER Abstracts) Total Trouble-l Ilours sfioo t ing Ivery.etc teplace m

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TA111.E 4 Onsite Emergency Diecel Generator and Plcut Name Auxiliary Equipment HodificaLlon Macord Linit No.

Equipment or Date of Reason for Hodification and procedure Hod.

Desired Improvement Description of Modification moell f led e.

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Encionura 1 - Pcg2 5 TABLE ENTRIES a

l EXPLANATION / CLARIFICATION i

i Table 1 Reason for DG Operation and Scheduled Duration of Run: This column contains the di.fferent categories of diesel generator operation. The categories.

4 are structured such that the start and run conditions are similar for all of the tests in a category.

In this column, enter the scheduled run duration for each of the test categories. Also enter the number of diesel generator starts that are done for each type of test. For example, if on the monthly test there is one start from the local con-trols and one start from the remote controls, the number of starts i

per test is-rwo.

If two or more diesels are started simultaneously 4

for any reason, please record it as a multiple start.

DG No.: Enter each diesel generator's identification number in this column as rhown in the example.

Number of Starts: Enter the sum of the successful and unsuccessful start attempts for each category.

If there are several starts for each test, e

include all of them, but be certain to record the number of starts per test in column one.

Number of Failures: Enter the sum of the failures for each category. A failure is counted if the objectives of the test are not achieved. A subsysteu failure that does not cause failure of the diesel generator 1

system is not counted as a failure.

If the diesel generator did not start, run, and load as required by the test, a failure should be recorded. However, if the diesel generator would have supplied power 1

in some capacity for an emergency, please explain in Table 3.

For l

example, if the diesel started on the second attempt or the diesel i

was tripped to repair a minor oil leak that would not have been a l

problem in an emergency, this should be noted in Table 3.

l Percent Loading of DG CKW): Enter the percentage that the diesel is

^

1 loaded for each category. The continuous kilowatt rating is conaidered j'

to be 100%.

J Duration of Run Before Stop for each DG Failure: Record the run-ti=e for each failure. If the diesel failed to start, the run-time wculd l

be 0 min.

Identification of Failures: Attached to this questionnaire are abstracts of the LERs related to the diesel generators. The abstracts are numbered starting with.one.

Refer to this number to identify the failures, but if there was a failure for which there is no abstract, assign the failure a number and include it in Table 3.

Table 2 i

Reason for Downtime: Enter in this coluen the categories of schedule main-tenance that make the diesel generator unavailable for emergency Jervice.

If the diesel generator is unavailable for emergency service during surveillance. testing, report that also, i

l

i Enclo:ura 1 - Pcgm 6.

2 Table 2 (cont'd)

Hours of Downtime: Enter the number of hours that the diesel generator is unavailable for emergency service. Report the hours under the column reactor shutdown or reactor not shutdown as appropriate.

Comments: Comment on time to return to service after maintenance has begun, or other pertinent information.

Table 3 LER Abstract No. (Refer to attached LER Abstracts):

The attached LERs are numbered starting from one.

Refer to this LER number in column one.

Each LER abstract should have an entry in this table.

If there was a failure not included in the attached abstracts, please assign it a number and enter it in this table.

Downtime Hours:

Enger the number of hours that the diesel generator is unavailable for emergency service.

Subdivide these total hours into troubleshooting, parts delivery, and repair or replacement.

Comments: Use this column to comment on the downtime and the failure.

If the reported failure was only a technical specification violation, but would not be a complete failure of the diesel generatcr to supply power or would only be a delay, please elaborate in this column.

Table 4 Equipment or procedure modified: List in this colu=n the equipment or procedures related to the emergency onsite power system that have been modified since the reactor became critical.

Date of Mod. :

Enter the date that the modification was completed.

Reason for Modification and Desired Improvement: Report the reason fe the modification and the desired or observed improvement in the e,uten.

Description of Modification:

Briefly describe what modification was made.

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-TABl.E 2 Plect Name (Sample)

Diesel Cenarctor Scheduled Downtime Racerd.

U21t No.

Calendar Year 19_

llours of Downtime Reason for Reactor shutdown Reactor not shutdown Comments Downtime U(;#

Dgf gf DG#

DGf f

Dgf 1]I DGI DGI Scheduled 11aint enance Preventive 24 16 16 Maintenance Sent-annual 6 Annual Equipment ibdification 8

8 8

Modified lobe oil on each diesel. Diesels down at different times.

0 Time DC is unovailable for einergency service because of required testa Down 4 hrs per test 8

48 40 48 Diesel cannot be automatically started during test or for three hours afterwards

/

Encla;ura 1 - P gs 9 TAlli.E 3 Diesel Generntor Unacheduled Downtime Rzcord FIC t Name XXX (Sample)

Calendar Year 19 _

Unit No.

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• E I.ER Abstract ib Downtime llours failure under emergency conditions, please explain liere, (itefer to attel l-a u

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r e fa ures sted 1,n Table 1.

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10 1

4

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0 0

Diesel started in 15 see instead of required JO sec 5

0 0

0 0

Secondary air pressure low.

Primeq air satisfactory.

6 0

0 0

0 Secondary air pressure low. Primary air satisfactory.

~

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0 0

0 Diesel started in 20 see instead of required 10 acc.

8 0

0 0

0 False DC start signal. DC satisfactgry No I.ER 9

0 0

0 0

Required DC starts after the failure of one elesel.

10 0

0 0

0 Starts to verify repairs.

9 4

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Enclo:ure 1 - Pcga 10 TABLE 4 Onsite Emergency Diesel Generator and Plent Name (Sample)_

Auxiliary Equipaaent Hodification Record Unit Ns.

t.quipnent or Date of Reason for Modification and procedure Mod.

Desired Improvement Description of Modification modified Lube oil system 2/76 Improve turlio charger lubrication Soak-back pump was removed and replaced with a-for emergency starts.

continuous lu'e oil pump. New pump also o

continuously lubricat,the crankshaft.

Relay cabinets 1/78 Prevent dirt from fouling relcy Cabinet doors with gaskets were installed.

contacts.

lastrumer.t 6/79 Eliminate vibration damage to Cbutrol and monitoring instrument panel was Relocation instruments relocated from the engine skids to a free standing panel mounted on the engine room floor.

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WHEN iHE-DIELEL Le t:E R AT OR. 15 UPER Al E D IN T Hc,. E XC RC I SE MODE.-THERC Akt Pf R M I b S I Vt' 5 IN THE CIRCUIT bhEAKER 1 iAl %RE ACTUATED BY THE MANUAL SIART RELAY CONTAClb.

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lHE RELJ CONTACT hLOCK HAS BECN COANGdD 001 AND ThE DIESEL 1ESTED S A'il SF A C T OR I LY.

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DURING PERFORMANCE OF THE i.hr eu bh LDAD IEbT utJ THE P:U. E EMLhGENCY DIE 5EL GENLR AT OR. THE-DlblHANGh PhtLbuRL GAUGE UF lHE b ACKUP ELECT R IC FUEL DIL PUVP MAL blbCovtHLD l tW I C A l l.',, ZEkb.

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ItIL LtcRLENCY GENERATOR RE MA I NED UPERABLE ANO THE S ILIC A D.L HAS NO DtIRIMENTAL EFFECib UN FUCL OIL.

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NOV IL, 1974 DOCKET 50-334, I y P E -IN 4, itG--WLS1, AE--b+W-CO N T R O L--0 21362 A4 AIL AVAILAU!Li1Y - NRL PUBLIC DOCUMENT ROOM, 1717 H LTREET, WAbillNGION L.C. 2LLL 2.

(08 /PAGE -- MINIMUM CHARGC 12.00)

Abb1RACl DAlt UF bVENT - 650179. POntR LbVLL - G00%. CAUSE - DEFFCTIVE Ph0LCDUhtb. DUhlNG nOUTINE AUD11 DF CHEMISTRY RECORDS 10/22/79, 11 *AS ObbERVdb THAT LURING'1HE PERIOD MARCH'THROUGH SEPTEMBER, I975, THeRh WERC LEVERAL.CCCA519NS 4 HEN ANALYSIL-OF THE DIESEL F UE L LAMPLLL #Ab N31 COMPLElED r!! THIN THE REOUIRED TIME.

THE SAMPLLb nLRE I FMt-DI A T ELY ANALYZED AND FOUND TO bE WITHIN ACCLPIALLE LI41Tb EOR vILCOSITY, %A1ER AND SEDIMENT.

C Hti M I b 1 R Y PERbuhNtL F A ILhu 10 ANALYZE bAMPLEb WITHIN ALLOWAuLE TIME LIM 11b Ht C A u st UF INLOMPLtit itsSinUCTIONS IN CHEFlSTRY MANUAL F Os MODtb L L e,.

C HE M I S T R Y MANUAL WAS REVISCO 10 CLARIF( TECH SPLC bAPPLING AND ANALYSIS RduulREMENTS.

CHEMILTRY PERSONNEL mLkE Ib$ulD LXITLhb STRE?51tsG THE IMPORTANCE OF TIMELY AN ALY SI 5 OF LANPLLL.

COMPOr,LN T COLL Z u Z 2 4 -COMP UNC N1 CODL NO1 APPL IC A bLE_

LfSicF CODt Et-EPERb GE N t e< A I U h SYS 6 CON 1ROLS I t2 / b/ 0 0 0 w O L ! -0 0 0 LO P2 / /

5 ACCT St ION NO.

002 01521 N' T11LL ulLLEL OLNtRATD4 * :A L bi f uR1 FIRbi SEGUENCE INTERVAL AT DEAVER VALLLY l CUW A bl H DLOUtbNL LIGH1 CD.

DAlt 1 9 7's TYPL U

MW L in * /L L s 79 -0.31 la U.S.

NRC, REGluN 1,

SLP G7, 1979 DOCKET

$ 0 -@, T Y Pt:-P A n,

?>0--hEL1, A E--b+ w CO N T R O L--0 26 98 9 AVAIL AVAILAdlLil's - Nht PUbL!C DOCUVEN1 ROOM, 1717 H STREET.

MINIMUM CHARGE 12 00) 6,AbblNGION l>. C. Lubbb. (Ob /PAGE Abbl4ACI D AI L UI-

1. s L N 1 - ObO779. POhLR LEVEL - 000*4. CAUbh.- SCOUENCE OFF ZLHD.

Oth !.G SUhVEILLANCE TEblING OF THE NO.

1 EMERGENCY DIEbcl GtNLhAILH StGUENCING CIRCUIT. 1HL FIRbT LOADING SEQUENCE INltRVAL heb 4.100 SECGNOS RAIMER TilAN THE REGUIRED 4.500 blC bN t<b.

Thi uitbEL GENE R. IUR IS CAPAHLE OF ACCEPTING FULL LDAD IN a.$

ilCONDS Ab DE M ONb1 R AI L D ti Y THE MANUFACTURER'S 150 14.5 1 WUNS.

IHE S t.O w l FIRL1 INTERVAL RLbuLTED btCAU5ti lHE blAhlING PO l fwl OF l i tt LECUENCER WAb SLibHILY OFF ZERP.

1HE dlNUCNCLh wAh CY CLt ta AND ADJUSTED Ill WilHIN SPECIFICATIONS.

C um PNu o l (OL:

I t-6 i wu-I NST huMLN i Al 1 UN A ND CUNTROLL b('. l e to Chat tb-LMLnL 0Lbt4AIOL bYb b LON1h0LS 1 o / b / b 0 0 00 01 -6 0 0 0 012 / /

6 ALLt.LLim. M.

u0Z bi bl A 4' Talli DILL L LiNLhA104 UUlPul LREAKt.H FAILL 'I O CLOSE AT BEAVER VALLEY C U w i,U 1 h DUQULENu LitHI CD.

DAIL 1 *rY 9 1YPt u

FtMC L14 w/LLN 7 5 -O P.$

ID-U.S.

NRC. HLGION 1.

AUG 23. 1979. DOCKE1 bO-44.

l Y P L --We h.

f* F L -- w L b l.

AE--t+b CO N 1 h 0 L --O P 69 71 A V/A ll AVAiLAblLilY - te h t PULLIC DCCUktNT NOOM. 1717 N SIREtT.

4 Abt. I N0 l ut:

L.C.

uubtb. (Ub / PALL -- M I N I M UM CHARGE 12.00)

/ t:51 k AC T LAlc UF hVENI - G724/G. POnth LEVLL - 000%. CAUSE - MANUAL b!Ahl htLAY MALFUNCilON.

OURING A bukVEILLANCt TtbT. NO.

I CIF 5CL GLNLhAllM EdIPUI bHtANLh FAILEU 10 CLOSE WHEN THE CUN1dHL %I1CH AL AllUAlLD.

IN ALDI1 ION. A ts ALARM WAL ACLCivtp I N'; 1C A l l tu s FAILURL OF THt NO.

1 AIR START M010RS 10 b l +,41 IN L 1 :.S tL GLN RA1GR.

1HE DilbEL SlAwitD ON THE NO. F Alk d1Akt

t. u T U R L.

Iht No.

2 LFE4bENCY C I L SE L GE NtR A104 hEMAlblu UILhAbLL.

AIn bl A Fi l kOTUR r;AILUWE R L b blT E D FRGM A C Xt. N C I S L D. L b Al l dF IC10R IL Y TESTED.

IEb1 CIRCull WHICH WAE.

j bliC41NL P. t. lO N DN /* l -i Nb104.

F-I N I ON ASSEM6lY WAS CLEANED, n

u v---

r, m,

,,--,,--.,v-

-~----,-v,

-ne---,e

,,----,e,,

v e -m

-m m~

1 h / $ / 0 0 0 u u'01 -0 0 0 00 F 2 / /

o CONTINUATION

'l PAGC.

43 INSIALLLb 10 MUN110W UhEAKEk CONTROL CIRCUITRY INDICA 1CD F t. ! LURL LL L ukR LO' IN MANUAL STAR 1 RELAYL.

REPLATED CYCLING OF RLLAYS Diu NUT PRODUCL ANY FAILURCS.

' CO MPU N L N 'I CLDC C h i ed4 K-C l R C u l i CLDLhRS/ INTERRUPTERS SYSILk LODL CC-LMLh G GLNLR A1 Dh SYL L CONTROLS l b/b / 0 0 0 G O G l -00 0 0012 //

7 i ACC L L b ! G#. NO.

0 02 01 b04 )

. DU1PUT bREAAcR F A ILS TO CLOSE AT DEAVER VALLEY

TITLL DiebtL GENERAIOR I

LORPAUlh DUQUELNL L I L HT CO.

D A 11.

!979 1YPL u

MCMD L1R %/LLH 7 *> -0 09 10 U.S.

NRC. RCblON

1. JUN 21. 1979. DOCKET 50-334. l Y b b -Pn R. F.F G--w E S T.

AE--b+W CON 1ROL--02627b' A V t. l L AVAILADIL!lY - NRC PUBL I C DUCUMEN T kOOM. 1717 H STREET.

i W AS H i t.G I ON u.C. 20bbb. (06'/PAGE - - M INIMUM CHARGC E2.00)

At6lkAL1 isAIC UF LVLNI - 032079. POwCR LEVEL - 000%. CAUSE - NOT-Ut.1CRMlhLD.

l>U R I N G A LURVE ILL ANCE 1 C ST. #1 blCSCL GENERATOR OU1PUT fWCAntR F AILLU 10 CL USE WHEN.THC CONTROL SWITCH WAS ACTUAIL(e.

1hi ILbi LINCulT INSTALLLD TO MONITOR OREAKER C ON 1 riDL CIRCUITHY WAS OBSERVED. UUT DUC TO AN INCOMPLETE UNDE ~4biANDING bY lHL OPL4f1Fs. NOI ALL OF THE' STATUS LIGHT CUf 4D I I I ONS FLR L RLPUxlED.

lHE SUR VL 1 LLANCE IE5T WAS S UC L ti SL F UL L Y COW.PLLILD A1 1400 HOURS.

CAUSE OF INOPERAHLE O Rt Amis 15 UM t.0 % N.

nRtAKLh 1EST PANEL REMAINa INSTALLED 10 i

NUNiiUR lHE tes t A KLR CLUSING CONTACTd.

'HE OPERA 1GRS HAVC RCCLiVLD f(URt DL1A1 LED INSTRUCTIONS IN USE C IN TriRoRE T A I ION OF ICLI L I NC*> l l.

~CUMPOM N 1 Lubh C N F itR N-L IN Cu li CLOStRS/ INTERRUPTERS lbYb iL M LUJE tL-LMLhb GFNLGATOR LYb & CONTROLL 16 /b / D O O v 0 01 -0 0 0 00 N //

b

,/CCLLLIUh NO.

0 0Z O 143!M

lllLL DIL$tL LLNC W A104 UUIPUT bHEAKER F AILS 10 CLOLC /I bCAVER VALLEY 1

LO.dAU1h D Ud uL bN t.

LIGhi CG.,

PA

,Doli 1 "/ 7

T Y W.

C ytyU 2 PLS. L lh */LFR 7 / -4 9 / 0 3L TG U.S.

NRC. REGION 1.

NOV. 29.

1977. DUte.t i ':,0-3 2 4. i Y P L --P w R. MF G-W d LT.. AL -510NE C WE051ER IAVAll

.*VAILAMILITY - NkC PubLIC DOCUMLN1 es 0 C M. 1717 H STFELT.

W /.bb l N b 10N.

D.

C.

2Obbb (Ub CEN15/PAGE -- MINIMUM C H t.k G C LL.00) i Ab51 W ACl D 61 E OF L VE t41 - 00007/.

FUWER LEVLL - 42%.

CAUSE - S11CKING NFLvA I4LLAY.

lHC F ULLuw lNL JNCIDENT WAL DISCOVERED DURING A RLCLN1 f( AN AGt M EN I AUDI1. ON 9/23/76. W HI LE PCRFORMING A

%UhVtILLANLL TEST.sN THE NO. 2 DILSCL GENERATOR. THE OU1PUT

.mE A4L -s f- /* I L LD IO LLUbL.

1hh bhE /.NCR FAILED 10 CLOSC fiLC AUSL OF /s.31 1 L K i h b NF LD A RELAY IN Tht MANUAL GR EAERCISt MODL b t uR I IN G C I F LU 11.

( b &i mL t.1 L Oist RLLAYA-hLLAYL LYLILM ( O.sl CL-CVtRG GL Ne ed A l tN !YS f.

CON 1ROL5

. I o / 5 / O L 0 0 0 01 -0 0 0 OL c.* / /

4 l AG I bb ION hb.

u v e u t *+ 0 e ' O jIllLt Dit.dLL GobEhAluR Ud1PUI LRLANLR F AILL 10 CLOSC Al BCAVER VALLEY I

,: Lit.*>A UIit DUQUtLNL LIGHI LO..

Pl1TLbOAGH. PA

DAIL l '4 7 F l1YW w

1. LMD 4

.h. 5, L lw w/LLR 7n -b l / 011 10 NRC CIRCClGR OF REGULAllON, W t b I O ts bt P1.

26.

197o. DOCKh1 6 0.$.2 4. T Y PE --P WR. MFG--wLbl..

Al--bl U; L 1.

%:b51tR

! AVAIL i.VAILAslLaiY - NRL PUDLIC DOCUMENT ROOM. 1717 H S1 RECT..

M I N I Mut'. CHARGE u tJa H l h010r..

b.

C.

Eubbb (Ob CEN15/PAGE 2

A2 00)

AU51:4AC1 D A l t; Or; L V L: L 1 - 09127b.

P O.s t R LEVEL - 0%.

CAULE - NOT DL1 L ktil Nt D.

Iht No. 2 Let t b E L GENLkATOR WAS OU1 OF SERVICE FOR trnilhL O r-thi DlubLL nik Si b i t v. AND OIL SYSTEM RtLIEF VALVES.

Al I107 h0URL CUMINL SudVCILLANCE 1E511NG OF THE NO.

I D I C LC L b t N :. R A 1 0 %. I hd OUIPUI iWEAKEk FAILED 10 CLOSE U51NG ThE CONTROL Sh!1CH.

VAINIENANCL SUPPUhi W A!: UETAINED OUT. Al 1126 HOUR 5.

Iht.1 % % L A CL Os t D bh 1HL F IRS 1 ATTEMPT. NEGATING 1HE i

~

Ib/b/00GOGGI-0000002//,

9 CONTINUAllON 1

PAGE 44

+

IRCU.lLLbHUG T ING t-F F CR i.

A 5'EC1AL 1E51 WAS PERFOHWED AI I t,2 b HOURS 10 AU10-LOAD i t1E NO.

4' DIESLL GENtRATOR.

THE OUTPUT O kt A K E rd LPERAftD P40PcRLY DuklNG lh15 TEST.

,CuouNENT CODL C(l ba r.-C l 4 CU l f C LUS tR 6 / I NT E hR UPT E R L

'bYL1LM C04 EE-EMERG GtNLRATOR LYS L CONTROLE 1b/5/0000301-0000022//

10 lACCEbb!ON NO.

0 0Z O 14 0 c ',1 il!TLL O lc hE L L"N E R A I OR UU1PUT BREAKER F AILS 10 CLObE AT BEA%IR VALLEY I

' Cu t r* A u l n UULuCbNE LIGHI CO..

P! T I SEsVRGH, DA DATC 19?e L1VPL G

ME ^4 C' S PGS, L14 h/LER 78 -LO / 011 TO NRC DIRECTOR OF REGULATION, RLblON 1.

LEPl-21, 1970. DOCKE1 50-334. T Y PE --P WR, MFG--WCST.,

AE--510NL L dosTLN 4 AVAIL AVAILAulLI1Y - NRC PUbLIC DOCUMENT ROOM, 1717 H STRECT, MINIMUM. CHARGE et4HINLTON, D.

C.

205bb (Ou CtNTS/PAGE M.00)

AbSI,ACT D AT C LF tVLN1 - 0 4 0 L7 ti.

PUWCR LEVEL - 0%.

rAULE - NO1 D L l E R M i ts E D.

T HE NO. 2 DIESLL uSNERATOR WAS OUT OF SERVICE FOR TLS11NG OF I hd DICbEL AIR SYSTEM AND Olt SYb;EM RELIEF VALVEL.

Al 0115 h0045 DUi<!NG SURVelLLANCE TESTING OF T HE NO.

I DIESEL t> C f.E O. l Ob, llc GtNchATCS OUTPUT BREAKER FAILED 10 CLOSC USING 4

I Iht CON 1aOL bw11CH.

FINALLY, AFTER CLOSING THE BREAKER i

M ar,U A LL Y ( LUCALL Y, Al THE BREAKER), THE DIESEL WAS RUN FOR ONE I

HUUk Al FULL L UAD.

THEN. AT 0530 HOURS. ThE D IE SEL GEfJER A 1 DR l

WAb lyt,ChRONIZLD THhLL 11MES SUCC E LSF ULL Y USING 1HE CONTROL S W11 Cit.

A SPECIAL TESI WAS PERFORNED A1 2200 H0Uk5 TO AU10-LUAD 1HL NO. I DIE 5tL GENERATOR.

THE OUTPUI t3RE AKE R OPEtsAILD PH OPE RL Y DUhlNG THIS Ttbl.

4 Cu@uNL t,1 CODL C AT uh-C IR CU I T CLOSERS / INTERRUPTERS

bY S I B LCDs dL-tMLRG ut tJeR Al bP SYS L CONTROLS

. I b / a / u b u d O b l -O O O OO O 2 //

11

ALCtLblON LU.

0 02 014 0 3/b lliLt CLL C i k l L AL iAULT UCLUML IN STAllON f4AIN TRANSFORMER Al DEAVER VILL: i 1

'C Ol W A U' lit DUOUd L% t L1Gh1 CU..

P 1 T T SE!URLH, PA

DAIt 1t70 (lYW G

iktVU 7 PCS, LTh b /L E h Y' -4 a/O 1 i -O 10 U.L.

NRC, REGION 1,,

AUG.

I1, 147F, u GLh t-1 S0-334.

1 Y P E - - P t.k. :.F L-w E ST., AE--STONE 6 WEOSTER

AVAIL AVAILAblLilY - f Jk C PubLIC DOCUf4LtJ1 ROOM, 1717 H 51REET,

v. AS H I N G 10N,

D.

C.

20bSL (Ob CEN15/PAGE -- MINIMUM CHARGE.

n..UO1

( Atf u l h A t t R AIL Uf t VL N i - 6 72 b ? ti.

PDEER LEVLL - 100t.

CAUSE - F AUL1 IN Uhc PHI St.

AN L LLC 1R I CAL FAULT OLCURkED IN THE STATION F*AIN e

T < AN SF Uh.4E k HE bu L 11 t.b IN A GENEkalLH 1 RIP, T URE INE TRIP, att.CIDR 1 RIP A ND SAFE 1Y INJL CT IOf, FOLLOWED 4 ft!NUIES LATER HY i-L DS L DF ue F b i1 E i>G V.N.

RC PUMPS lhlPPLD ON A ts UNDtRF R E QUE NC Y C Of G 1 1 1 bo..

I C IH MLRCLNLY D ICbC L LENERATORL 61Ah1ED Esui THE P DG P IL LU F A ILib 10 tuTOMAllCALL) FLASH.

THE FIELD hAS LATLR M ANU ALL Y FLASHED.

lME PLANT WAL PLACED IN A HOT SHUTDOWN i

LugutilLN IN A C ONi hblLE D fc. ANNE R.

EVENTS WEHk INITIA1ED bY AN LLLilhlCAL FAUL1 IN ONt PHASE OF ThE MAIN TRANSFUuER.

LOSS OF GrFbl1L W v(E R REbuL1CD F W O t4 I MP R O P t-84 UPERATION OF 1HE MAIN LENL1Al(& Out OF STEP RELAY.

THE T DG FIELD FLASH RELAY F AI LukL Cuulb NO T BE LUPLjlA1EL AND HAL SINCE TLSTED SA11LFAC1 DRILY.

ICD 4 plt 1NI CDRs 1 N t.N 5 f - I k A N! FO W14 L kb

. L Y b i l f-Luut Le-AL UNblit PUwth LYS L CUN1kOLS Ib/b/UUOubul-000G022/,

12 JACtL1 LION f.U.

OUzul a bIL

1 1 I L t.

Ull Li Ah FUUN) UN D I L St L GLNtRA10h CON 1ROL PANEL Al OLAVER 1

VALLLY l

LO%PAU1H uuuutSNL LIGHT CU..

P 1115t3 Uh th, PA IDAll 147t

1yPt u

ihtvt 4 PLS, L16 w/LtR to -u37 / LL 1 10 N7C DIRECTOR OF RtGULATION, RLGION 1.

suhd 14, 1976, DOCKET b 6 - 13 4. TYPE--PeR, R F G- -WE L1..

AL--biONE 6 Vd651rR 7

AV A ll AVAILALlL11Y - NR L PUBLIC Docurat N T ROUM, 1717 H STREET,

3 n/b/00000 01 -Gv0 0C 2 2 // ~ <

.)i C09di I NU Al I OM 1

PAGE 46 MINIMUPi Cit ARGE

• ASH &NG1Dra.

L.

C.

20bbb (Ob CtN15/PAGE 12.00)

'Abbi4ACI D AT L OF LVtNI - 000176.

POntR LEVLL

-0%.

CaubC - PRCLSURE GAGL' INSTALLED IMPROPERLY.

ON b/21/76. Wi1H THE PLAN ~ IN OPLhATIONAL MJDE b.

THE LUOL DIL PRESLURE. GAGE ON THE NO.

?

DIEbEL GENERA 1DR WAS CAllbHATED AND THE G E NE R /.T OR WAS AllORNLD

• 10 SERVICL.

UN 6/1/Ve, DURING THE MONTHLY SURVEILLANCE T E ST.

AN DIL LLAK WAL DibCOVERtD IN lHE ENGINE CONTROL PANEL AND THE GENEdATOn WAL LHUT DOwN AND DECLARcD INOPERABLE.

THE LEAN MLSUL1hD FROM A LUULE SWAblLUCN C utsNE C T I ON ON THL LUBE OIL P h E L S Uh ',' GAGE.wHILH AFPAkENTLY %AS NOT PROPERLY REINSlALLED AFILR CAllbRATION Oh b/21/V6.

THE LINE WAS REPA! RED AND lHE DIESEL RLluRNdD 10 SChVICL.

'COMPONt.N 1 " 0 0 f.

I NLlk u-lNb1kUMEN1 A T l ON AND CON 1ROL5 SYb1EM CODE E L-E M ER G GENtRATOR LYS L CONTROLS

-16/b/0000001-000002T//

13 ACCILLION tO.

00Z013bJ49 TITLC LtAA F Out.D 11. DIESEL FUEL Ull PUMP DISCHARGE. PIPING AT DEAVER V AL L E Y I 3;DR P A U 1 h D UG UE LN t L1GMT CO..

P11TSHURGH. PA GATL 1976 TYPt O

MMU 3 PGS. Llh E /L ER 7 H -3 2 / 0 2 L TO U.b.

NRC. REGION 1.

MAY 16.

1976.

DOLKEl b0-334. lYPE

'WR, Mi WE51.,

AE --S T O NE G WEBSTER I V A IL A VA I L A u l L I T ) - NkC PutiLIC DOCUMENT ROOM. 1717 H SlREET.

MINIMUM CHARGE WASHINGlUN, D.

C.

LObbb (06 CENTS /PAGE

%.001 Ab51x RI DATE CF EVtNI - 041e76.

POWER LLVLL - 100%.

CAUSC - F L AW IN P IP t is l PPL L.

DuklNG NORMAL OPERATION. THE NO.

I DIESEL GLisLRAloh N M, LH U I LOWN AND DECLARED INOPERAELE DUE TO AN Ull LEAN IN lhL FULL Ull PUMP D I SCH AR GE PIPING.

THL INCIDENT kAS CAUSED bY A FLAW IN A FULL Ull PUMP D I SC H AR GE P! PING N1PPLE.

THE NIFFLE e AS R L PL AC E D AND THE PIPING WAS INSPECTED FUR LEAKL.

IGWJ.RN1 LnDb P IPL X X-P IPt h er# lillNCL SYS1EA Cuvl bL-tMthG ut NER A T Oh bYS t,

CON 1 ROLL 10/b/0000601-0000024//

14 ALCLSLhdh f* U.

O CZ O l 34 54 0 IIILL OltEtL btNLWATOR LREANCR F AILL TO CLUSE AT DEAVER VALLEY l 10 WAUIH D UL Ui SN L L1GMT CO..

P 1 T'T b B U H G H. PA DATE 197&

T YPf.

O i

ALMO 3PC'.

L I F.

h /L LR 76-OU4/03L 10 U. S. NkC, htGION 1.

FEES.

7.

IMo. D O C h t-1 5 0 - 3.:9 1 Y P C --P n R. AFG--wtST., At--STONE 6 n' E B S T 5 R

%UAIL AVAILAblL11Y - Nk t l'ut,L I C DOCUALN1 ROOM. 1717 H STRLET.

v.AS H I N b 10 N.

O.

C.

PO b4 b (Oh CLN15/PAGE - MINivuM CHARGE LP.001 APbli. C T DML OF E Vtt.1 - 01117h.

PuhtR LEVEL - 100%.

CAU5L - NO AW AWtN I CAUSE.

LMhlNG A SURVEILLANCE TEST. DIELLL CENERATOR E UUIPU1 t,hl An L4 F A IL LU 10 C LO1 E.

THE UkEAKER WAS CGMPLF_TELY INLFCCILD. u ul NO CAULE FOR FAILURE COULD DE DE T h rot I NED.

IT AAS C)LLLb 5tVrHAL ilFEb IN IHL T L L1 PO51 TION AND THE lEST WAS T HL t.

W. I I E F ACl OR I LY P5i H F Oh k h D.

IOV5'ONE N T LUDL C A l t. h -C I W C U n i C LUST n5/ I NT E RRUPlE RS LYbid N COUc CL-a.VCRu ( E N c.R Al O h SY b f,

CUNIROLS I h /b / u ut:O V O 1 -0 0 0 001.' / /

1b

$1LLbblGN is O.

O O/ U l 32 h b

/IllLt WLAllLN 1AALN 10 PO hl R OPERAlION WilH DIESEL CLNERAlOR OU1 OF St4Vlu Al bl A VE R V/LLhY I LRe* Ab IN vuub.'SNu LIGHT CD..

P1TTEUURGH. PA AIC.

1577 YPt J

L/u 3 PGS. L14

v. /L LR 7/-50/011 TO NRC DIRECTOR OF REGULATION.

%LGluN 1.

JU rsE 23.

147?. DGCKET 50-334 TYPE PWR, MFG--WEST.,

AL--5lCNE G niDS104 3VAll AVAILAu! Lily - NNC PUbLIC DOCUMENT ROOM. 1717 H STREET.

wAdHl.% 10N.

v.

C.

20$*L (ub CEN1L/PAGE -- MIN!vUM CHARGE 11.00)

AthinACI

-DAIL UF-LVLNT - 0 n2 ;-7 7.

poker LEVEL - 0%.

CAULE -

MlalNiL #dtisiION OF REG. bu!DE.

DURING A MANAGEMENT AUDIl. IT wad DISCOVLnc0 THAT THL RtACTOR 4' A b TAAEN FROt* HDT STANDSY

'I O JUAtW DP._QA1 ION 4IIU'blEStL GENER AlON 1 OUT OF SERVICE FOR s

w r

-- sw+

-,_.-,--.+,.me%

m CONTINUAllON 1

PAGE 46 l o/ t / 0 0 0 00 01 -00 0 00P2 / /

,15 JREVLN1IVE imAlNi PANCL.

ThE S1ATIUN WAb OPERA 1ING whlN 1NE DG aAb H CMOVLD " F.4 GM bri H V I C E.

THE hLAClOR THdN 1RIPrbD AND WAS J

hLlURNLL 10 UPCRAIING COND1IION.

1Ht STA1 ION STAFF MIS!NicWPREltu ktG. GulDL 1.16.

THE ERROR HAS OELN RECOGNIZED.

L L4& G Ntd.1 LOUL t t. l N L-d t.G I t45. I t* I E NN A L COMGUS110N bYblLN L ORF LL-LMCRO GENLR AT OR SYS C CON 1h0LS 1 * > /S / 00 0 u0 01 -60000 2 2 //

16 1'ACCLLblCN NO.

00Z 0132 8> t 1 VOLlACE ZERO AT BEAVEk VALLEY l

=ll1Le DILb6L LcNLH ATO. buTPUT Cu m A Ulst.

DuuurbNE LILili CO.,

PITTbbuRbH, PA.

D A l e.

1977 TYPc 0

HC40 2 PLS, LIR h/LLR 7/-C9/03L TO NkC DIRECTOR OF REGULATION, 4

fit G ION - 1.

AUG.

the 18s /7, DOCAEl 50-334, TYPE--PnR, MFG--WEE 1.,

2 7

AL--STUNL 6 addSiLR.

AVAll AVAILAhlLilY - NRC PUdLIC DOCUMEN1 ROOM. 1717 H STREET.

wASHINylON.

D.

C.

2Ob4b (06 CE N15/P AGE' -- N I N I MUM CHARGE 60.00) lAbb l-AL T DALE OF 1VLNI - 071'/77.

PUwLR LEVEL.

50%.

CAUSE - LOOSE 1

CONNLCT lots.

DURING A b u %,

NET LOAD TRIP TEST, DIESEL GENERATOR 2 blah 1EL. A t'N 1 10 FULL $PCCD AND CLOSED ONTO THE bus.

I HuwLvER. lHL D IE SCL UUIPUT VOLTAGE hAL ZERO AND LOADS ON.OUS DF REhAINED GLL N kG l Zt D.

THE CAUSE WAS Lf"3 S E CONNECllONS IN lHE-AulOMATIC FIELD F LA SH CIRCUll.

T he.' GENER ATOR OPtRATED PROPERLY a11H MANUAL F 1 t.L D FLASH.

COMPOPLN1 CODL CK169 K-C ll'C U I T C L OS L H b/ I tit E RR UPl E R S

]LYdith LD.A.

Ch-LMEhb uthe_R AI Dh LYS & CONTROLS 16/.2/0000001-0000022//

17

" AC CLb b l GN NO.

O LZ u t De ae.:o

! 1 1 1 L 6.

DILLtL GENCHATOT4 OUTPUT LRCAKLk FtILS TO CLOSE Al DEAVER VALLEY i

1 EtunPAU1h DU.U 1bNL LIGHT CO..

P1IiSHURGH. PA 1 A1 t l'87 7 il)P:

O A. */ u 2 PGb. LlR b/LER 7 / -13/ 0 3L 10 U.S.

NRC. REGION 1.

APRIL 4 f

1827 7. sbCsL1 5 0 - 3.34, 1YPE--PwR. MFL--WEST., A E --S T O N E C WE65 TE R TA% AIL AVAILAUILi1Y - fJdC PU L:L1C DOCUMLN1 ROOM, 1717 H STRCET.

• AbHINulON.

L.

C.

20L4b (Ob LE N15 /P AGE -- MINIMUM CHARGE

/.00) i j Abb lW /4 I DAll Of L V L t.1

- 031.77.

POWER LEVCL - 75%.

C A US L. - D I R T Y C t *J l f'OL hv. ! 1 LH CONTACTS.

DURINb A LOR VE I LL A fsCF lLLT ON DIESEL GLNt 4 A l tih L.

l HE GE tu.R A'l GR Uu1Pul tm t A KE R FAILED TO CLOSE.

I F Al LUht n/d UVE TO U l '41 Y CON 1AClS ON 1ME bHEAKLR CONTROL S,. l l C l i.

IPL WL511NbhaOSE lYPt OT2 SWilLH WAS CLEANED AND THE CLNlALTL WL ht AllLNEU.

THE UG hAL lhSlED AND RETURNED 10 ORERAbLL STA10h.

LOW #iN1 C ODt CETh.o.-ClkColl CLUStWh/INTERRUPlERS Mbit M LUJL EL-tMLkb GLNc4ATOh SYb L CCN1ROLS l b /b / 0 0 0 0 b O I -O O O OO P/ / /

1L ACL L L L I UN Nh.

OO/CIP94J1

lllLL DILLLL t L w h A T LR LulPUI bHL ANLR F A IL5 10 CLOSE al BEAVER VALLEY I

ltW*u O I h U UG ttu Lin L I stil Cb..

r> l T T S E L R G H. PA DA1t I 'e 7 7 1YPt u

PLPG a PUS. L1h w/Lik ??-2v/04L 10 U.L.

Nac, REGION I.

MAY l!.

1977.

1 Je LO.t ! t 0 -3 7. 4 l Y F E --P n R. MFG--WLSI..

AE --S T O N E 6 neb 5TER

' t.V A I L AVanLAdlLIT) - Nhl PUCLIC L O CU hi'41 ROOM. 1717 H STREET.

wt5HINLteN.

b.

C.

00545 (06 CLNTb/PAGE -- MINIMUM CHARGE j

4.

0u)

' ALS1n Atl D A1 L OF c Vt N1 - G4117/.

POthR LE VEL 75%.

CAULE - DIRTY DELAY LLNlAlIb.

LUhlNG A II4 A I NING L1A.! TUP OF DICSEL GE NE R A T OR

<. THE 101901 LRL h L A FAILLD 10 CLOLE.

I1 FAILED bECAUSE OF

[a l R B Y C L'.l A l l 5 "N

l Mh NFLDA (NO FIELD) RELAY.

AFTER THE CbNIAC1b neht CU L AN Lv. ThL RLLAY UPERAlLD.

DGE WAS TESTED AND 2

l< L I UR NE D it InstH ALL C STAlub.

(.0 90NtNT CLbL H tL A Y X-F t.L A Y L S Y S I c te C G X CC-LMEkb LLhh.4 Al Ok LY$ 6 CONTROLS l

+

P A fst 47 lif I f,/L / O G i u o t t i -0 9 0 0v ad / /

A L' C L L L l u t.

f.b.

OO/p1294Le

' l ! I L :.

D IL Li L GLNLHATOR OUTPUT LA h ARE R. F A IL S TU CLD50 AT HEAVER V ALLE Y I

CUWPAUlH DUubl5NL LIGHI CO.,

PIT 1LbORGH, PA DATL 1977 TYPt a

MLMU J PGS, L1R h/LER 7 7 -34 / 0 3L 10 U.S.

NRC. REGION 1.

MAY 20.

1977 n LC o.E T bc-334, 1 Y PL --P dH, MFG--WEST..

Ah --ST ONE L W E B S T tE R

AVAIL AVA IL Ab ILll Y - Nh t PubL I C DOCUMEt81 ROOM, 1717 H STREET.

nALHINGlON, b.

C.

POS4b (Ob CENTS /PAGE - M I NIMUM CHARGE iL.00)

%D S t h /.C T un1 E OF LVLN1 - 042 077.

PuntR LEVEL - 100%.

CAUSE - DIRTY 9tLAY L uhl A C 15.

LURING A TEST OF DIESEL GENERATOR I.

THE OUil2W T bh E A K tJ< FAILLO 10 CLO5E.

FAILURE WAS DUL TO DIRTY CONTAC~lb GN lHL NFLDA ( fJ D FIELD) RELAY.

AFTER CLEANING THE CONlACib. l HL R". LAY UPLRATED SATISFACTORILY.

A deb!GN CHANGE Hnh Ilbl d bl OUE b1 L D 10 RLPLACE T Ht; PRESENT NFLOA RELAYS WITH I f *P RO VE L L L ALC D RLL /,Y b.

COMPOt.CN T CODt 4LL AY A-RLL AYS

'SYSICM COUL tr-LMhWL bENLRATUR SY S 6 CONTROLb Ib/b/OUOuuOI-6000022//

2O ACCtb510N t.O.

DOZul294LS TIILE DICbEL Gt NLh AT OR FAIL 5 IO STANT AT BEAVER VALLEY I CD,4PAUIH D UQ ui:. 5 N r.

LIGHT CU..

PITT56URGH. PA DAlt l *s / 7

1YPL O

F E *4 U 2 PGb, LlR w/LER 7/-37/02L 1(i U.S.

NRC.' REGION 1.

MAY 20, 1477.

DC'CKEI 50-334. {YPJ--PWR. k.F G - n ti b l., AE--STONL L WEBSTER AVAll AVAILAu1Lili - NWC PubLIC DOCUMENT ROOM. 1717 H STREET.

W/bHINGlON.

U.

C.

20b46 (06 CLNTS/PAGE - filNIMUM CHARGE L2 00) 100%.

CxUSE - MOISTURd

>hLI4/.Cl D AT L GF t;VE N 1 - 042477.

POWER LdVCL 1N 51x41ING Al R.

AN A T T Et4P T wAS MADE TO START D lti b E L GENERATOk 1 PhlGR IU PLRtOnNING PRtV[NTIVE MAINTENANCE ON DG2 OUTPUT APrARENTLY BECAUSE OF MOISlVRE IN i

JREAKER.

bol FAILtD 10 ;al AR 1 8

i lht SIAR11Nb A IN.

A DbSIGN LH A NG ti HAS BEEN INITIATED 10 INSIALL REF R IG ER A T E D COMPktSLtu A1R ORlhRS IN-lHL A IR START aYblEM.

LOW'P NL N I CODE ENG I NL-Lfu,1 Nt b,1 N1 t kN AL COMUUSllON i

SY S i t = CUut ut-LMcWh LtNtRATOis SYS L CONIROLL 86/b/0D00001-0000012//

21 ACCi *,b l GN NJ.

0020129424

T i l li.

DIESCL GENtRATOR OU1PUT BREAKER 1 RIPS AT BEAVER VALLEY l CU4PAuld D uv u'. bN L L I GliT CD..

PIITLbORGH. PA DAIL l *s ? 7 lYst 0

MLNu 3 i>GL.

L1h F /L LR 7/-29/03L TO U.S.

IN C. REGION 1.

JUNE 15, 1o/7. OCCNE1 50-334 1 Y P c --P w h,

MFG--WEST.,

A L --b 10 N E 6 WESSTER AVAIL AVAILAhlLITY - NHL PUotIC DOCUMtN1 ROCM. 1717 H SlREET, W s.S t t l NG l ON.

b.

C.

E U ba. b (De CtNTS/PAGE - MINIMUM CHARGE i.

1P.00)

AL'b i d A C T D AI L UF tVEN1 - 022477.

Po*LH LEVEL - 0%.

CAULE - I N1 ER N AL Lubb UF F1LLL TR I P NOT DlbCONNEClCb.

ALL MulOR LUADL SUPPL 1ED F nt1M EMLnGLNCY 4KV bU5f S HAD bELN LHIF1ED 10 IHE AL bu5 IN uhtPANAIION rOR IES1ING IHL AUl0-51Adl UN DIESCL GENERATOR F.

dud!NG

t. 1Ebl (F htL Du 1 RIP LOLNOu i F E AT Uht IN THE tMERGENCY MGut. THL Db O UT PU I HRLAr.LR 1RIPPLU.

THE DC TRIPPED GLCAUSL GF AN INILk"AL LOS5 Of7 FIELL IRIP buPPLIED BY THE V h ts D O R WHICh MAD NOI HLEN DIStaNNLCTLD OURINb ACCEPlANCE TEblING.

A DESIGN CHAN',t kLoutbl WAL INiilATED TO 5<EMOVE THE TRIP.

LO M P U N. N 1

(. u v L I NSTR U-INSI GUAEN I A T lON A f sU LONTRULL SYS(:- LO.

Z-Et4LNu LENtRAIUh LYL L CON 1ROL6

.16/b/ObOOubt 99000i2//

2P

'ALCLLb!ON NU.

OU2 Ol l h94 I l l L t-DIEbtL GrNEhATDR FitLD LUS1 AT DEAVt4 VALLEY l (J4PAulH DwudLNc LloH1 CU..

SHIPPINGPORT. PA UAIL

' l 's 7 u TYPL O

FtMO

• PGb. L1h ArLhR VO-lb/UEL lu NHL DIRECTOR OF ktGULATICN.

REbION 1,

APRIL 2%.

15; 7 6, DDCKLT bO-334, l y P d --P w R. MFG--WEST..

A E---S I C NE C t h bb i tA l

8 6 /b / 0 0 0 0 0 01 -f/ 0 0 00 2 //

20 CONTINUATION 1

PAGE 4e AVA IL A V A I L A c l L l 'l Y - N4C PUhLIC DOCUMEN1 ROOM, 1717 H 57HECT, MINlv.UM CHARGE e t.St il t.o l ute, i,. C '.

L u ba. :)

(Oo CL N 1:>/P AGE as.00)

HIGH 4E51 STANCE LorsNE C T I ON.

DIESCL GENERATGR I DC abs la t C I C td> L t FILLD WAL L O ST DUh]NG ILbilNG RESULl!NG IN LOSS OF OUS lAL E r.'c h v L tJ C Y LuulPMENT.

A HIGH Rtbl5TANCE WIRING CONNECTION IN ItC DG LXCl le t bktAAfk CAUSED DVC4 HEATING AND MELTING OF THE alklNG.

HLAl CAUL 2D IHE dhEA%Eh TO TRIP.

THE 6REAKER WAS REPLACED ANL> A NEa CONNECTION MADE UP.

,