IR 05000269/1985038

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Insp Repts 50-269/85-38,50-270/85-38 & 50-287/85-38 on 851112-1209.No Noncompliance or Deviations Noted.Major Areas Inspected:Operations,Surveillance,Maint,Startup Testing of Safe Shutdown Facility & LER Review
ML20138N917
Person / Time
Site: Oconee  
Issue date: 12/13/1985
From: Bryant J, Dance H, King L, Sasser M
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
To:
Shared Package
ML20138N863 List:
References
50-269-85-38, 50-270-85-38, 50-287-85-38, NUDOCS 8512240208
Download: ML20138N917 (8)


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UNITE 3 STATES -

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'Li NUCLEAR REGULATORY COMMISSION

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' ATLANTA,GEonGIA 30323

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Report.Nos:'.50-269/85-38, 50-270/85-38, and-50-287/85-38

.' Lice'nse' : Duke Power Company.

e 422iSouth Church Street Charlotte,.N.C. :28242

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!FacilityName: 'Oconee Nuclear Station-

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<DocketfNos.: 150-269, 50-270, and 50-287

License Nos.:

DPR-38, DPR-47, and.DPR-55 Inspection: Conducted: November-12 - December 9, 1985 Inspectors:

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M. K. Sass 7:

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' 'dpproved'by:

' H.-C. Dance,-3ection Chief Dat6 Signed

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' Division of Reactor Projects

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L SUMMARY f.

Scope: This 1 routine, announced inspection. entailed 146 inspector-hours on -site in -the areas ' of. operations, 'su'rveillance, maintenance, startup testing of the

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isafe shutdown < facility, and LER review.

g Results: Of the five areas inspected, no. items of noncompliance or deviations

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(REPORT DETAIL?

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? Licensee-Employees: Contacted

  • '?M.S. Tuckman? Station' Manager

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>*J.N.: Pope,: Superintendent of.0perations.

  • 4T.S.'Barr, Superintendent;of Technical. Services
T.B;E0 wen,; Superintendent'of Maintenance

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JR.T.; Bond,3 ompliance Engineer-

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' *T; C.! Matthews, 'Techni cal - Special i st 1

(H.R.ilowery,)-Shift Operati.ng Engineer

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Otherblidense'e employees.co'ntacted -included ' technicians, operators,

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.; mechanics,: security-force members, and staff engineers.

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1 Resident:Inspectorsi

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' '*J.ChBryant'

'*M.K.:Sasser 1*L.P. King.

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'* Attended exit-interview.

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' Exit Interview The inspection scope and findings were summarized on December-10, 1985;with Ltho'seipersons indicated in paragraph-1 above. The licenseeLdid'not identify

' = asiproprietaryf anyi of.L.the. materials prov.ided to ' or reviewed by- *the

11nspectors;during this= inspection.

53.c fi.icensee ction'on Previous Enforcement Matters

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(Closed)- Violation /85-10-01:

Control Rod Position Limits. The inspectors

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t. verified that Lall corrective' actions specified have been satisfactorilyt

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' l completed.- This, item 11s closed.

' ~ 4.1 Unresolved Items

' Unres'olved items were not-identified on this inspection.

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Plant' Operations-

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LThe inspectors reviewed plant operations throughout the reporting period to

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verify?conformance with regulatory requirements, Technical Specifications

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/ (TS), ? andi adm.inistrative_ controls.

Control' room logs, shift turnover

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' records and' equipment. removal f and restoration records were reviewed routinely.. Interviews were conducted with plant operations, maintenance, l chemistry, health physics and performance personnel.

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.o Activities within the control, rooms were monitored on an almost daily basis.

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f Ins"pecti' ns ;were. conducted on : day and 'on night-shifts,- during week days and -

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o ron weekends. LSomeiinspections were made during' shift' change in~ order to

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evaluate 4 shift ' turnover performance.

Actions observed were conducted as.

required ; by
Operations. Management Procedure _2-1.

The complement of-l licensed personnel on-each shift inspected met or exceeded the requirements ~.

x ofJTS; Operators were responsive to - plant.' annunciator alarms and were

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cognizantsof1 plant conditions.

-Plant tours were taken'throughout the reporting period on a routine basis.

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The areas toured included the;following:

Turbine Building:

Auxiliary Building Units 1, 2, and 3 Penetration Rooms

' Units 1,2, and 3~ Electrical Equipment._ Rooms

. Units 1,2, and 3 Cable Spreading Rooms-

~ Station. Yard l Zone within.the Protected Area Standby Shutdown-Facility

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Keowee Hydro Plant-E During the. plant. ; tours, ongoing activities, housekeeping, security, equipment status,-and radiation-control ~ practices were observed.

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Lunit' 1Tand - 2 remained at essentially 100*4 power-throughout the reporting

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period, November 12 to December 9,=1985.

Unit 3; began the ' report period shutdown for_ replacement of a main turbine

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bearing; As ' the unit _ was.being shut down --a steam -generator tube leak

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ideveloped. The leaking tubeFand another.which demonstrated reduced wall thickness 'in' A" steam : generator, were plugged. The turbine bearing wa's

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replaced end th$ uniC made critical 'at 4:47 p.m.Lon November 16. It reached

.100*4 power at 11:14 a.m. on November 17.

Unit 3 ' wated et 100% power until 8:43 p.m. on November 24 when it was-

shut?dovn for 'f ailure of ' main turbine bearing No.

1, the same bearing

position whicn had failed previously.

During extensive examination, the Licensee found no specific <cause for the bearing' failure. No condition was found - that was not within tolerance.

In order to eliminate possible i contributing factors,1two oil lift pumps were ~ replaced, the journal, was machined, all bearings ' inspected, and efforts made to provide. perfec'

alignment of the shaft. At the end of the report pe'iod, work was nearint

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completion and it is anticipated that Unit 3 will be.on line by December 13.

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No ' violations or deviations were identified.

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L 6.1 iSurveillance Testing;

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LThe z surve111ance ' tests l'isied f below!were-reyiewed and/or1 witnessed byl the

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~ ; inspectors :to verify - procedural; and _ performance adequacy.

The completed

.; tests? reviewed were examined forEnecessary, test prerequisites, instructions, facceptance ? criteria,' technical content, cauthorization.toL begin -work, data-fcollection, (independent verification < where required,. handling _of-

deficienciesinoted, iand ' review of completed _ work. - The : tests : witnessed,.in LwholeLorfin part,'were? inspected to determine that approved procedures.were:

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iavailable, test equipment was! calibrated,. prerequisites were met,7 tests were

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' conducted according to procedure,; test results were acceptable.and systems

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irestoration_was completed.

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- c Surve'111ances witnessed'in wholeaor;in part are as' follows:

v PT/0/A/0150/008 Reactor _ Building Personnel Lock Leak' Rate Test, m

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Unit 2

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PT/0/A/0610/02=,

-ExternallGrid Trouole Protection System Logic and Switchyard Isolation Logic Test

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T LSurveillance tests reviewed were:

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WR 51511'D-Read Senscr Voltages for Reactor Building Normal-

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l Sump Level Sensors

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PWR-57126 C! 3

~ Install.Strongbacks for Performance-of Personnel

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Hatch Leak' Rate Test-WRL55053'A Perform.E/S System Logic Sub System 1, LPI

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Channe113 On-line Instrument Calibration WR:55052 A Perform E/S System Logic Sub System 1,'HPI and

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RV' Isolation, Channel 1, 0n-line:Instrumenti p

Calibration'

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WR' 55319 : A-Perform:Cor'e Flood Tank Pressure Instrument :

Calibrat"on Required by Technical' Specification-4.1.1 s

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N,o violations or deviations were identified.

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Maintenance Activities n.

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. Maintenance activities were observed and/or ' reviewed during. the ' reporting period to. verify-that work was" performed by qualified personnel and _that Lapproved procedures in use adequately-described work that was not within the

skillcof the Ltrace., Activities, procedures and work requests were examined

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~ to - verify i proper authorization-to begin work, provisions for. fire,

-cleanliness,/and-exposure control,- proper return of equipment to' service, g

y f and tha'. limiting conditions for operation were met.

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JPerform PMion Breaker TC-9,L" Low Pressure

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Perform Mle'TestiofxTransformer Bus 2,' Unit. 3,

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V!N: [8M/ReahoriBuihiinglSpray}Va'1ves

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,< y D ' w itojreactor buildilng # spray 1 valves might bel:. inadequate to-open; theXvalves

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? D ' 1 g jimmediatelyTunder? accident conditions. Specifically,1 valve 2BS-2!wasifound:

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Cinadequate and'the' remaining five valves,atwo in;ea'ch unit,;were determined

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tolbe < marginal t i;The; valves; involvedeare,J in iUnit 1, !1BS-11 and 1185-2; in

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(closededuringE reactor Loperationland Jopen :;automatica11yf ath10. psig. _

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containment pressure. LThe; building ; spray.pumpstalsoLstart at;that pressure?.

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system isCanyaccidentimitigating system and,)asjsuchfdoes not require thet g & _ Q; double?; boundary isolation ' of ' non-accidentrmitigating; sys

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iTechnicalf Spectfications,. Table 4.4.1,istate ethat the~ check valveslinf the V Jm-V' 'actio'nhwas. tot replace the? power. cables L to; the ~ valve operatorsEwith'

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ispraylsystemJare used ^ forlcontainmentMisolation. - Permanent corrective

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m ! considerably heaviericable,'thusireducing'line;1oss. This action'was taken:

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?on' bothivalves on each unit.' iThe Evalves were ttested iand' rt; turned to the t

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gnormallylclosed position by November 24.

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(Nolviolation'sdrdeviations;wereiidentified.

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Keowee= Unit 2 was-taken.out of' service.at 4
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burned: field; coil pole connecting -strap.. Technical ' Specifications (TS)

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shutdownfofsone Keowe'e unit'for maintenance for a period of up to 45 daystat

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Unit'2'was shut:down:for

~ m l maintenancex for}about? 20 ? days:lin 11984.' ; Ford the c current" repai rs, f the.

( jlicenseefwasjpermittedfto. extend the::72 ho_ur? period,/ifine'cessary,1without-a,

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%s, ) W-(an emergencylTS Jchange,vsince La 45 day shutdownjwas:already analyzed and 'a i

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4 y% _ ?lon [ Licensee 1EventL Reports

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/ qThelinspectors breviewediinonroutine. event? reportsf toi verify the report-

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s N idetailsj met { license frequirements, -. identified thef cause Kof Athef event,.

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described (correctivef action's lapprog riata foMthe -idenfified cause, and

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@ Q *1-Ladequatelyfaddres' sed the ~ event :and_ 'anyD generic implications. In addition, l

y3 Mas appropriate Mthe! inspectors examined (operating and maintenance logs,^a'nd-

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. W NPersonnel[wereIihterviewedito;vertfy that the report accurately. reflected

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,t'4 kthe-circumstances ofLthe event,.that;the corrective action had been taken.or

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,4 1 fresponsibilityfassign'ed Lto assureJcompletion, -and that 1the M evedt 'was'-

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@n, M,,;followinglevent reports 1wereJreviewed:.

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((Closed)hlE_R270)85O3[ Rod.IndexCurve.LimitViolated: The' inspectors-T i

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qc i verifiedithat/all; corrective actions specified have~been. satisfactorily-

-Ecompleted; cThis item is' closed.

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%qg-((Closed)? LER 270/83-03S
Valve: Failed Dueto-Bent--Stem: f The inspectors n

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J reviewed ? the1 corrective 1'? actions f and E verified that' all. have !been.

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,3 completed. mThis item isl closed.

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. E(Open) jLER'270/82-10f Stuck Suction Relief f onithe "2B" MFWP,1After a

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5 jgN ReactorjTrip; JThisiincident resulted 1in ' the upper. surge 7 ank -level; t

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falling ( below"technicall specificationilimits. ' Only Vone Toutstandin'g
commitment ' remains. - Station Modification 1584 has been
installed, but.

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ldoes(not; work satisfactorily. Until; operational? problems are resolved.

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411.x Motor Operated Val _ve (MOV) Torque. Switch Setpoints

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1for"selectingksetting,2 and; maintaining _ swi.tch setpoints on safety related

Th residentslinitiatedIinspectionfefforts to review the licensee!s'programL i

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MOV'.s.i Discussions to;date have centored on the licensee's basis : for.

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P R currentlylused_torqueLswitch setpoints. Additional plans are to investigate-

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Lyalve histories,f vendor frecommendations; and _ licensee valve functional

  1. , f testingitoensurelthat;switchsetpointswillaccomodate.maximumdifferential E

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_ l ? pressures l expected during both normal and abnormal. occurrences.

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j g_ _ _ r , , 6-T ^ lA'ny fihdings'will be reviewed with' the. licensee in light of the recently ~ ' cm - issued IE Bu111 tin' No.185-03: LMotor 0peratedLValve Common Mode Failures- ' -

During Plant > Trans1_ents Due, to ; Improper' Switch Settings. 'Results will be discus'ed;in theLnext monthly report.

s , 112'; Facility Modifications (37701) , , (ThA inspectors' contin'ue'd their review of ~selacted test procedures performed ' ~ iduring checkout of, the Standby Shutdown Facility (SSF). The previous report ~11sted ; incorrectly 7 est. Procedure TT/2/A/0400/07-SSF RC Makeup Pumps Flow.

T - Verification. Tests. l The correct' number-for that 'est is TT/2/A/0400/07A.

1 Additional. tests reviewed were: . TT/1/A/0400/10 SSF - Unit 1 Transfer of Control Test - ^ ~ ,- TT/1/A/0400/07 SSF ; Unit'1 RCiMakeup Pump Performance Test . TT/3/A/0400/07-SSF - Unit 3 RC Makeup Pump Performance Test I.n artest performed.on Unit-1 RC makeup pump. on November 23, 1984, the pump i - provided 24.25-. gpm" at: 2275' psig.

In a'.May. 17, 1984'te'st,. the Unit.'3 RC.

, _ Lmakeup Jpump provided-23.5 gpm flow.at 2500 psig. The auxiliary service : . " water' pump delivered: 1750 gpm at 1110 psig as-described in the system- = man'ual s.

The. previous report. mentioned the1 requirements of IE Bulletin 79-23 which

'pointediout. a= potential diesel' generator failure and' specified a 24 hour full load t test. and " requested a response.from the111censee on certain ' circuitry" questions. 3 At the time 'of the-bulletin issuance, Oconee brd no ~ emergency diesels; however,'it is ' assumed that the bulletin appl.ies to the - .SSF diesel'.

The inspector _ reviewed the' diesel manufacturer's test results as prescribed by? Duke-Power Company; ' Included in' these tests was-a full power load test conducted on.0ctober 16 and 17,. -1980 at the Power Systems Division of Morrison-Knudsen Company, Inc. :The data show that the Oconee diesel-generator-wes operated ~ continuously for 22. hours at 3500 kW (the full power . rating) and then for 2 hours at'3850 kW (110%). The data show that v'oltage Land frequency requirements' were constant-in each of the test periods, and ,that' cooling water' temperature and stator temperatures met requirements.

~ - LIn an' internal - letter of Octo'ber 25, 1979, concerning Bu11etin. 79-23', the- - ~ Llicensee Dstated that. corrections had not been made between low KVA rated. transformers 1 and' high KVA. emergency diesel generators" without adequate - 11 imitations ~ on L the flow of circulating currents.- The inspector has Lrequested the licensee to verify that the in place Oconee diesel generator wiring _ meets-the' requirements of Bulletin 79-23. The results will be.given ~ in a subsquent: report.

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l131 > Low.Presaure Injection:(LPI) Pump.

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Whiletconducting a fsurveillance'. t'est' of the IC LPI pu'mp
on October 4, i

k:. ' operations personnel noticed excessive' noise and below normal flow when the- @ pumpJ was started.

The l pump ' was.' immediatelyE stopped ~and, a subsequent.. . "~. ~ -: investigation _resulted in finding sLction1 valve ILP-7fclosed rather than-in- ' the required open position. The valve -lineup was rechecked and the pump , ' f test'.was'then satisfactorily completed.

Further review revealed that the; " ~ - 11nitial valve ^ lineup and test 1 preparation was' completed by theLnight shift . . '

prior. togtesting -by. the day shift. The' initial lineup. required the pump to be vented and that ILP-7-be left open'. However, operations -vented the. pump

.and then closed ILP-7.as is;usually-done in normal venting procedures. The' R ~ lineup'was'not reverified by eitherfthe day shift operations or performance- ' ( -groups / prior to starting the pump. The" licensee has reviewed and documented e thel incident and is-taking corrective-:actionso to ~ prevent i recurrence.

Pending c review ^of cthe corrective actions this will be identified ' as - - ' - Jinspector ifollowup f item ' 269/85-38-01, Abnormal Operation of Low Pressure -. Injection Pump.

. .. 14. : Onsite; Review Group (403018) - . m - - LThe review = of - the' onsite safety review; group - was completed.' -A review was

' made? ofo a : computer. : printout of all operating experience documentation-

-received at10conee.. This was reviewed by the OSRG - and ' screened for; - iapplicableLinformation. 'It was then forwarded to the' designated individual-in the: responsible. group.

' ~ Al followup on. the review of in planti activities. for the~ purpose. of - F identifying deficiencies, determined that:assigments 'were made by the OSRG - Jchairman which-would cover-this area.

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No' violations'or? deviations were ide'ntified.

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