ML18016A449

LER 98-006-00:on 980508,failure to Perform Insp & Preventive Maint on MCCB as Required by TS Was Noted.Caused by Inadequate Sps.Tested 9 Pressurizer Heater Bank Breakers by Cycling each.W/980608 Ltr

ML18016A449
Person / Time
Site:	Harris
Issue date:	06/08/1998
From:	Donahue J, Verrilli M CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
HNP-98-084, HNP-98-84, LER-98-006, LER-98-6, NUDOCS 9806120025
Download: ML18016A449 (5)

Text

CATEGORY 1 ~

REGULATORY INFORMATION DISTRXBUTIONWYSTEM (RIDS)

ACCESSION NBR:9806120025 DOC.DATE: 98/06/08 NOTARIZED: NO FACIL:50-400 Shearon Harris Nuclear Power Plant, Unit 1, Carolina DOCKET ¹.

05000400 AUTH. NAME .

AUTHOR AFFILIATION VERRXLLX,M. Carolina Power 6 Light Co.

DONAHUE,J.W. Carolina Power &. Light Co.

RECIP.NAME RECIPIENT AFFILIATION

SUBJECT:

LER 98-006-00:on 980508,failure to perform insp & preventive maint on MCCB as required by TS was noted. Caused by inadequate SPs.,Tested 9 pressurizer heater bank breakers by cycling each.W/980608 ltr.

DISTRIBUTION CODE: XE22T COPIES RECEIVED:LTR ENCL SIZE:

TITLE: 50.73/50.9 Licensee Event Report (LER), Incident Rpt, etc.

NOTES:Application for permit, renewal filed. 05000400(

RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD2-1 PD 1 1 FLANDERS,S 1 1 INTERNAL: ACRS 1 1 RAB 2 2 AEOD/SPD/RRAB 1 1 FILE CE E 1 1 NRR/DE/ECGB 1 1 R DWEELB 1 1 NRR/DE/EMEB 1 1 NRR/DRCH/HHFB 1 1 NRR/DRCH/HXCB 1

'1 1 NRR/DRCH/HOLB .1 1 NRR/DRCH/HQMB 1 NRR/DRPM/PECB 1 1 NRR/DSSA/SPLB 1 1 NRR/DSSA/SRZB 1 1 RES/DET/EIB 1 1 RGN2 FILE 01 1 1 EXTERNAL: L ST LOBBY WARD 1 1 LITCO BRYCE,J H 1 1 NOAC POORE,W. 1 1 NOAC QUEENER,DS 1 1 NRC PDR 1 1 FULL TXT 'UDOCS 1 1 NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE. TO HAVE YOUR NAME OR ORGANIZATION REMOVED FROM DISTRIBUTION LIST'R REDUCE THE NUMBER OF COPIES RECEIVED BY YOU OR YOUR ORGANIZATION, CONTACT THE DOCUMENT CONTROI DESK (DCD) ON EXTENSION 415-2083 FULL TEXT CONVERSION REQUIRED TOTAL NUMBER OF COPXES REQUIRED: LTTR 25 ENCL 25

Carolina Power 8c Light Company Harris Nuclear Plant P.O. 8ox 165 New Hill NC 2T562 JUN - 8 1998 U.S. Nuclear Regulatory Commission Serial: HNP-98-084 ATT¹ NRC Document Control Desk 10CFR50.73 Washington, DC 20555 SHEARON HARRIS NUCLEAR POWER PLANT UNIT 1 DOCKET NO. 50-400 LICENSE NO. NPF-63 LICENSEE EVENT REPORT 1998-006-00 Sir or Madam:-

In accordance with 10CFR50.73, the enclosed Licensee Event Report is submitted. This LER describes a failure to perform inspections and preventive maintenance on certain molded case circuit breakers as required by Technical Specifications.

Sincerely, J. W. Donahue Director of Site Operations Harris Plant MV Enclosure co Mr. J. B. Brady (HNP Senior NRC Resident)

Mr. L. A. Reyes (NRC Regional Administrator, Region II)

Mr. S. C. Flanders (NRC - NRR Project Manager) 5413 Shearon Harris Road New Hill NC 9806120025 'st80608 PDR ADQCK 05000400 S POR

NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB NO. 3150-0104 i4-95) EXPIRES 04/30I99 ESTIMATED BURDEN PER RESPONSE TO COMPLY WITH 'THIS MANDATORY INFORMATION COLLECTION REDDEST: 500 HRS. REPORTED LESSONS LEARHEO ARE LICENSEE EVENT REPORT (LER) U(CORPORATED (NTO THE UCENSING PROCESS ANO FED BACK TO UIOUSTRY.

FORWARD COMMENTS REGAROIHG BURDEN ESTIMATE TO THE INFORMATION AHD RECORDS MANAGEMENT BRANCH IT4) F33L US. NUCLEAR REGULATORY COMMISSION, (See reverse for required number of WASHU(GTOH, DC 20555000), AND TO THE PAPERWORK REDUCTION PROJECT l3150 digits/characters for each block) 0104L OFFICE OF MANAGEMENT ANO BUDG'ET, WASHINGTON, DC 20503.

FACIUTY NAME (1) DOCKET NUMBER (2) PAGE (3)

Harris Nuclear Plant Unit-1 50-400 1 OF 3 TITLE (4)

Failure to perform inspections and preventive maintenance on molded case circuit breakers as required by Technical Specifications.

EVENT DATE (5) LER NUMBER (6) REPORT DATE (7) OTHER FACILITIES INVOLVED (6)

FACIUTY NAME DOCKET NUMBER SEQUENTIAL REVISION MONTH OAY YEAR MONTH OAY YEAR NUMBER NUMBER 08 98 98 006 *- 00 06 08 98 FACIUTY NAME DOCKETNUMBER 05000 OPERATING THIS REPORT IS SUBMITTED PUR SUANT TO THE REQUIREMENTS OF 10 CFR B: (Check one o r moro) (11)

MODE (9) 20.2201 (b) 20.2203(a)(2)(v) 50.73(a)(2) (i) 50.73(a)(2)(viii)

POWER 20.2203(a) (1) 20.2203(a) (3) (I) 50.73(a) (2) (ii) 50.73(a) (2) (x)

LEVEL (10) 100% 20.2203(a)(2)(i) 20.2203(a)(3)(ii) 50.73(a)(2) (iii) 73.71 20.2203(a) (2)(ii) 20.2203(a) (4) 50.73(a)(2)(iv) OTHER 20.2203(a)(2)(iii) 60.36(c) (1) 50.73(a) (2) (v) 6 P ecif Y in Abstrectbei ow or in NRC Form 366A 20.2203(a)(2)(iv) 60.36(c) (2) 50.73(a)(2)(vii)

LICENSEE CONTACT FOR THIS LER (12)

TELEP)(ONE NUMBER (Irrrrude Area COde)

Michael Verrilli Sr. Analyst - Licensing (919) 362-2303 COMPLETE ONE LINE FOR EACH COMPONENT FAILURE DESCRIBED IN THIS REPORT (13)

REPORTABLE REPORTABLE CAUSE SYSTEM COMPONENT MANUFACTURER CAUSE SYSTEM COMPONENT MANUFACTURER TO NPROS TO NPROS SUPPLEMENTAL REPORT EXPECTED (14) MONTH OAY YEAR EXPECTED YES SUBMISSION (If yes, complete EXPECTED SUBMISSION DATE). X NO DATE (15)

ABSTRACT (Limit to 1400 spaces, i.e., approximately 15 single-spaced typewritten lines) (16)

On May 8, 1998, with the plant at approximately 100% power in Mode 1, a surveillance testing deficiency related to preventive maintenance and inspections for molded case circuit breakers was determined to be reportable. Specifically, during a review performed by Harris Plant maintenance and engineering personnel, a concern was raised regarding Technical Specification surveillance requirement 4.8.4.1.b, which states that each containment penetration overcurrent protection device shall be demonstrated operable: "At least once per 60 months by subjecting each circuit breaker to an inspection and preventive m'aintenance in accordance with procedures prepared in conjunction with its manufacturer's recommendations." Procedures that were credited for satisfying this requirement did not include provisions for the 60 month inspection and preventive maintenance (PM) for 480 volt molded case circuit breakers. Per the manufacturer, the 480 volt molded case breakers should have been cycled once to satisfy the inspection and PM requirement. A review of maintenance records indicates that each applicable molded case circuit breaker was not cycled as required. This review identified the failure to cycle nine pressurizer heater bank 480 volt molded case circuit breakers during the 60 month testing interval.

This condition was caused by inadequate surveillance procedures, which was due to confusion related to the actual manufacturer's recommendations for the 480 volt breakers.

Immediate corrective actions included testing the nine pressurizer heater bank breakers by cycling them each. No problems were encountered during this testing. Additional actions will include procedure revisions to ensure proper future testing of the 480 volt molded case circuit breakers.

HR R

NRC FORM 366A US. NUClEAR REGUlATORT COMMISSION 1699)

LlCEI)IISEE EVENT REPORT (LER)

TEXT CONTINUATION FACIMTT NAME (1) OOCKET lER NUMBER 16) PAGE l3)

TEAR SEOUENIIAl NUMBER NUMBER Shearon Harris Nuclear Plant - Unit //1 50400 2 3 OF, 98 - 006 00 TEXT Pf moro spsso Fs rsooPml oss sPÃss)os/ soprss ot HRC Form 36Q) I) 7)

EVENT DESCRIPTION:

On May 8, 1998, with the plant at approximately 100% power in Mode 1, a surveillance testing deficiency related to preventive maintenance and inspections for molded case circuit breakers was determined to be reportable. Specifically, during a review performed by Harris Plant maintenance and engineering personnel, a concern was raised regarding Technical Specification (TS) surveillance requirement 4.8.4.1.b. This TS states that each containment penetration overcurrent protection device shall be demonstrated operable: "At least once per 60 months by subjecting each circuit breaker to an inspection and preventive maintenance in accordance with procedures prepared in conjunction with its manufacturer's recommendations." Procedures that were credited for satisfying this TS requirement. Maintenance Surveillance Test (MST-E0007) "120 Volt Molded Case Circuit Breaker" and Maintenance Surveillance Test (MST-E0006) "480 Volt Molded Case Circuit Breaker Test" did not include provisions for the 60 month inspection and preventive maintenance (PM) for the 480 volt molded case circuit breakers. Per the breaker manufacturer, the 480 volt breakers should have been cycled once every 60 months to satisfy the inspection and PM requirement. A review of maintenance records indicates that each applicable molded case circuit breaker was not cycled as required. This review identified the failure to cycle nine pressurizer heater bank 480 volt molded case circuit breakers during the 60 month testing interval.

Upon confirmation of this testing deficiency, Operations was notified and the plant entered TS 4.0.3 at 0834 hours0.00965 days <br />0.232 hours <br />0.00138 weeks <br />3.17337e-4 months <br /> on May 8, 1998. This allowed 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> to complete the appropriate surveillance testing. Testing was completed by cycling the nine subject breakers and TS 4.0.3 was exited at 1145 hours0.0133 days <br />0.318 hours <br />0.00189 weeks <br />4.356725e-4 months <br />.

This condition constitutes operation prohibited by plant TS and is being reported per 10 CFR50.73.a.2.i.B.

CAUSE:

This condition was caused by inadequate surveillance procedures. MST-E0006 did not include specific guidance to ensure completion of the 60-month preventive maintenance and inspections for the 480 volt molded case circuit breakers. This procedure deficiency was caused by confusion related to the actual manufacturer's recommendations for the 480 volt breakers. A probable cause for this confusion was mis-application of guidance provided for the 120/208 volt molded case circuit breakers in 1992. This guidance was in the form a Technical Support Memorandum (TMM-92-192) and a previous interpretation of Technical Specifications, which is no longer active, and was based on manufacturer's recommendations. It stated that no preventive maintenance or inspections were required to satisfy the 60-month TS requirement for the 120/208 volt molded case circuit breakers. However, this guidance did not address, nor was it intended for the 480 volt breakers. It appears that this guidance intended only for the 120/208 volt breakers was improperly applied to the 480 volt breakers, causing the TS violation.

SAFETY CONSE UENCES:

There were no actual safety consequences as a result of this testing deficiency condition. There have been no instances where containment penetration overcurrent protection was required for the nine pressurizer heater bank breakers. Testing performed on the pressurizer heater bank breakers on May 8, 1998, revealed no problems with the breakers.

This condition constitutes operation prohibited by plant TS and is being reported per 10 CFR50.73.a.2.i.B.

Cr INRUN EORM 356k U.S. NUCLEAR REGULATORY COMMISSION

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LICENSEE EVENT REPORT (LEB)

TEXT CONTINUATION FACILITY NAME (I) DOCKET LER NUMBER (6) PAGE Is)

SEOUENTIAL REYISION YEAR NUMBER NUMBER Shearon Harris Nuclear Plant ~

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PREVIOUS SIMILAR EVENTS:

There have been no previous LERs submitted specifically related to containment penetration overcurrent protection circuit breakers. Several HNP LERs (94-01, 95-01, 95-03, 95-07, 96-02, 97-08, 97-11, 98-05) have been submitted to the NRC and were caused by Technical Specification Surveillance testing deficiencies. A comprehensive surveillance test review project is currently in progress in conjunction with HNP's conversion to the new Westinghouse MERITS Standard Technical Specifications (NUREG-1431) to help resolve these TS testing problems.

CORRECTIVE ACTIONS COMPLETED:

1. TS 4.0.3 was entered at 0834 hours0.00965 days <br />0.232 hours <br />0.00138 weeks <br />3.17337e-4 months <br /> on May 8, 1998 and testing was completed on the nine pressurizer heater bank supply breakers by cycling them each. No problems were encountered during this testing and TS 4.0.3 was exited at 1145 hours0.0133 days <br />0.318 hours <br />0.00189 weeks <br />4.356725e-4 months <br />.

CORRECTIVE ACTIONS PLANNED:

1. Maintenance Surveillance Test procedures will be revised or generated as appropriate to ensure that vendor recommended preventive maintenance and inspections are performed in the future to fully satisfy TS 4.8.4.1.b.

This will be completed by September 30, 1998.