ML17334B771

LER 98-021-01:on 980311,determined That Oil Pans Not Installed on RCP Motors Resulted in App R Noncompliance. Caused by Failure to Fully Implement App R Requirements.Will Updgrade Oil Leak Collection sys.W/980511 Ltr

ML17334B771
Person / Time
Site:	Cook
Issue date:	05/11/1998
From:	Finissi M, Sampson J INDIANA MICHIGAN POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
LER-98-021, LER-98-21, NUDOCS 9805190224
Download: ML17334B771 (7)

Text

I CATEGORY 30 REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:9805190224 DOC.DATE: 98/05/11 NOTARIZED: NO DOCKET FACZL:50-315 Donald C. Cook Nuclear Power Plant, Unit 1, Indiana M 05000315 AUTH.NAME . AUTHOR AFFILIATION FINISSI,M. Indiana Michigan Power Co.

SAMPSON,J.R. Indiana Michigan Power Co.

RECIP.NAME RECIPIENT AFFILIATION

SUBJECT:

LER 98-021-01:on 980311,determined that oil pans not C installed on RCP motors resulted in App R noncompliance.

Caused by failure to fully implement App R'equirements. Will updgrade oil leak collection sys.W/980511 ltr.

DISTRIBUTION CODE: ZE22T COPIES RECEIVED:LTR ENCL SIZE:

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

NOTES:

COPIES RECIPIENT COPIES 0, G'ECIPIENT

~ ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD3-3 PD 1 1 STANG, J 1 1 R INTERN . OD/iSPD~/ 2 2 AEOD/S PD/RRAB 1 1 E CE 1 1 NRR/DE/ECGB 1 1 NRR/DE/EELB 1 1 NRR/DE/EMEB 1 1 NRR/DRCH/HHFB 1 1 NRR/DRCH/HICB 1 1 NRR/DRCH/HOLB 1 1 NRR/DRCH/HQMB 1 1 NRR/DRPM/PECB 1 1 NRR/DSSA/SPLB 1 1 NRR/DSSA/SRXB 1 1 RES/DET/EIB 1 1 RGN3 FILE 01 1 1 D EXTERNAL: L ST LOBBY WARD 1 1 LZTCO BRYCE,J H 1 1 NOAC POORE,W. 1 1 NOAC QUEENER,DS 1 1 NRC PDR 1 1 NUDOCS FULL TXT 1 1 N

'NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE. TO HAVE YOUR NAME OR ORGANIZATION REMOVED FROM DISTRIBUTION LISTS OR REDUCE THE NUMBER OF COPIES RECEIVED BY YOU OR YOUR ORGANIZATION, CONTACT THE DOCUMENT CONTROL DESK (DCD) ON EXTENSION 415-2083 FULL TEXT CONVERSION REQUIRED TOTAL NUMBER OF COPIES REQUIRED: LTTR 24 ENCL 24

indiana Michigan Power Company

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C,e Ccc~p ace Bremen. Vl ga;6 INDMNA MICHIGAN POWER May 11, 1998 United States Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 Operating Licenses DPR-58 Docket No. 50-315 Document Control Manager:

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98-021-01 Sincerely, J. R. Sampson Site Vice President

/mbd Attachment A. B. Beach, Region III J. R. Sampson P. A. Barrett S. J. Brewer R. Whale

, D. Hahn Records Center, INPO NRC Resident Inspector 80Si~0~4. esosi~ 0 POR AOQCK 8

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NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB NO. 3150 0104 (5-92) EXP I RES 5/31/95 ESI'IMATED BURDEN PER RESPONSE TO COHPLY 'NITM THI INFORHATIOH COLLECTION REQUEST: 50.0 MRS. FORliAR LICENSEE EVENT REPORT (LER) COMHEHTS REGARDING BURDEN ESTIMATE TO TH INFORMATION AND RECORDS MANAGEMENT BRANCH (HNB 7714), U.S. NUCLEAR REGULATORY COMMISSION, WASHINGTON, DC 20555.0001, AND TO THE PAPERNOR REDUCTIOH PROJECT (3150-0104), OFFICE 0 MAHAGEMENT AND BUDGET NASHINGTOH OC 20503.

FACILITY NAME (1) DOCKET NUMBER (2) Page 1 of 3 Donald C. Cook Nuclear Plant - Unit 1 50.315 TITLE (4)

Oil Drip Pans Not Installed on Reactor Coolant Pump Motors Results in Appendix R Noncompliance EVENT DATE 5 LER NUMBER 6 REPOR T DATE 7 OTHER FACILITIES INVOLVED 8 SEQUENTIAL REVISION FACILITY HAME DOCKET NUHBER

'HONTH DAY YEAR YEAR MONTH DAY NUMBER NUMBER Cook- Unit2 50-316 03 11 98 98 -- 021 01 05 FACILITY NAHE DOCKET NUMBER OP ERAT IN G TH S REPORT IS SUBMITTED PURSUAN'I TO THE REQUIREHENTS OF 10 CFR: Check one or mor e 11 MODE (9) 20.2201(b) 20.2203(a)(3)(I) 50.73(a)(2)(iii) 73.71(b)

PONER 0

20.2203 a 1 20.2203 a 3 ii 50.73 a 2 iv 73. 710 LEVEL (10) 20 '203(a)(2)(I) 20.2203(a)(4) 50.73(a)(2)(v) OTHER 20.2203 a 2 ii 50.36 c 1 50.73 a 2 vii (Specify in 20.2203(a)(2)(iii) 50.36(c)(2) 50.73(a)(2)(viii)(A) Abstract betou 20.2203(a)(2)(iv) 50.73(a)(2)(I) 50.73(a)(2)(viii)(B) and in Text, NRC Form 366A) 20.2203(a)(2)(v) X 50.73(a)(2)(fi) 50.73(a)(2)(x)

LICEHSEE CONTACT FOR THIS LER 12 NAME TELEPHONE NUMBER (Include Area Code) 1 Mr. Mike Finissi, Electrical Systems Manager 616/465-5901, x2803 COMP ETE ONE LINE F OR EACH COHPONENT FA LURE DESCR ISED IN T HIS REPORT CAUSE SYSTEH REPORTABLE ~~'4:-

<<~rt)$ REPORTABLE COMPONENT MANUFACTURER CAUSE SYSTEM COMPONENT HANUFACTURER TO NPRDS TO HPRDS

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SUPPLEMEHTAL REPORT EXPECTED 14 EXPECTED HONTH DAY YEAR YES SUBHISSION (If yes, complete EXPECTED SUBMISSIOH DATE). NO.

DATE (15)

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

On March 11, 1998, with both Unit 1 and Unit 2 in Mode 5, it was determined that potential oil leakage sites existed on the Reactor Coolant pumps (RCPs) that had not been equipped with an oil collection system. 10CFR50, Appendix R, Section III.O requires RCPs to be equipped with an oil collection system capable of collecting lube oil from potential oil leakage sites. The intent of the requirement is to reduce the fire hazard due to possible oil contact with ignition sources. This LER is therefore submitted in accordance 10CFR50.73(a)(2)(ii)(B), as a condition outside the design basis.

The root cause of this condition was the failure,to fully implement the requirements of 10CFR50, Appendix R. To correct this condition, the oil leak collection system for the drain plug on the RCP upper oil cooler shell will be upgraded. Additional potential oil leak sites will be evaluated and either an exemption will be requested or upgrades made to the oil collection system as applicable.

This condition has been evaluated to determine the safety significance of the condition. Based on a lack of easily reached components with a surface temperature high enough to ignite the oil, it has been determined that condition has no safety significance, and therefore, the health and safety of the public was not jeopardized.

HRC FORM 366A U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB NO. 3150-0104 EXPIRES 5/31/95 ESTIMATED BURDEN PER RESPONSE TO COMPLY MITH THIS INFORMATION COLLECTION REQUEST: 50.0 HRS.

LICENSEE EVENT CONTINUATION FORliARD COMMENTS REGARDING BURDEN ESTIMATE TO THE INFORMATION AND RECORDS MANAGEHENT BRANCH (MNBB 7714), U.S. NUCLEAR REGULATORY COMMISSION, llASHINGTON, DC 20555-0001, AND TO THE PAPERHORK REDUCTION PROJECT (3150.0104), OFFICE OF MAIIAGEHEHT AND BUDGET IIASHINGTON DC 20503.

FACILITY NAME 1 DOCKET NUMBER 2 LER NUMBER 6 PAGE 3 YEAR SEQUENTIAL REVISION Cook Nuclear Plant - Unit 1 50-315 98 021 01 2 of 3 TEXT (if more space is required. use addit(ooaI NRC Fore 366A's) (17)

C i Ev Unit 1 was in Mode 5, Cold Shutdown.

Unit 2 was in Mode 5, Cold Shutdown On March 11, 1998, it was identified that potential oil leakage sites existed on the Reactor Coolant pumps (RCPs) that had not been equipped with an oil collection system. 10CFR50, Appendix R, Section III.O requires RCPs to be equipped with an oil collection system capable of collecting lube oil from potential oil leakage sites. The leakage points to be protected shall include plugs. The intent of the requirement is to reduce the fire hazard due to possible oil contact with ignition sources.

Potential leakage sites were identified that had not previously been explicitly identified, or discussed as an exemption.

ln Unit 1 and Unit 2, one RCP motor has a drain plug on the upper oil cooler shell, oil side. No catch pan hadbeen installed under this drain plug. In Unit 1 and Unit 2, the three other RCP motors have drain valves on the upper oil cooler shell. No catch pan has been installed in these locations.

The root cause for this condition is the failure to fully implement the requirements of 10CFR50, Appendix R. The design for the RCP lubricating oil collection system was already in progress at the time that Appendix R was implemented. As a result of Appendix R, the system was walked down, but these potential leakage sites were either not identified, or the intention was to request an exemption.

An exemption from certain Appendix R Section III.O requirements was granted by the NRC on December 23, 1983.

However, the exemption request, and the associated NRC Safety Evaluation Report, did not address the issue of drip pans under all possible oil leakage sites. No documentation is available to establish that the exemption granted by the NRC was intended to cover this design variance from Appendix R requirements.

This LER is submitted in accordance with 10CFR50.73(a)(2)(ii)(B), as a condition that resulted in the nuclear power plant being outside its design basis.

There are locations on the RCP motors in both units where oil may not be captured by the oil collection system. This does not significantly compromise plant safety because there is no direct leak path to hot surfaces. Metal non-combustible mirror insulation is installed on Reactor Coolant System piping proximate to the reactor coolant pump.

The lube oil has a flash point of approximately 425'nd the mirror insulation maximum surface design temperature is approximately 140'. Therefore, contact of the oil with the surface of the insulation will not result in ignition of the oil.

As only noncombustible mirror insulation is used, there is no fibrous insulation to become oil soaked and support a combustion process. There are no known ignition sources on the floor. Additionally, each RCP is provided with a manual water spray sprinkler system which was installed to satisfy the requirements of Appendix A to the BTP APCSB 9.5-1.

It has been concluded that this condition has no safety significance, and therefore, the health arid safety of the public was not adversely impacted.

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NRC FORM 366A U.ST NUCLEAR REGULATORY COMMISSION APPROVED BY OMB HO. 3150.0104 EXPIRES 5/31/95 ESTIMATED BURDEH PER RESPONSE TO COMPLY WITH THIS INFORMATION COLLECTIOH REQUEST: 50.0 HRS.

LICENSEE EUENT CONTINUATION FORWARD COMMENTS REGARDIHG BURDEN ESTIMATE TO THE INFORMATION AND RECORDS MAHAGEMEH'r BRANCH (MHBB 7714), U.S. NUCLEAR REGULATORY COMMISSION, WASHIHGTOH, DC 20555-0001, AHD TO THE PAPERWORK REDUCTION PROJECT (3150-0104), OFFICE OF MANAGEHEHT AND BUDGE'I WASHINGTON DC 20503.

FACILITY NAME 1 DOCKET NUMBER 2 LER NUMBER 6 PAGE 3 YEAR SEQUENTIAL REVISION Cook Nuclear Plant - Unit 1 50-315 98 021 01 3 of 3 TEXT (if more space is required. use additional NRC Fons 366A's) (17)

The oil leak collection system for the drain plug on the RCP upper oil cooler shell will be upgraded by the end of the second refueling following restart. Additional potential oil leak sites will be evaluated and either exemption will be requested or upgrades made to the oil collection system as applicable.

l C den i tl None 315/97-028-00

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