ML16139A526
| ML16139A526 | |
| Person / Time | |
|---|---|
| Site: | Oconee, Crystal River  |
| Issue date: | 11/14/1997 |
| From: | Essig T NRC (Affiliation Not Assigned) |
| To: | Foster W BABCOCK & WILCOX OPERATING PLANTS OWNERS GROUP |
| Shared Package | |
| ML16139A527 | List: |
| References | |
| PROJECT-693 TAC-M99019, NUDOCS 9711190218 | |
| Download: ML16139A526 (4) | |
Text
CATEGORY REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
R:9711190218 DOC.DATE: 97/11/14 NOTARIZED: NO DOCKET #
7 Oconee Nuclear Station, Unit 3, Duke Power Co.
05000287 i2 Crystal River Nuclear Plant, Unit 3, Florida Power Co 05000302 ct-693 Babcock & Wilcox Owner's Group (B&WOG) Activitie PROJO693 AUTHOR AFFILIATION RECIP.NAME RECIPIENT AFFILIATION FOSTER,W.W.
Babcock & Wilcox Operating Plants Owners Group
SUBJECT:
Forwards safety evaluation of B&W Owners Group submittals re potential for common-mode failure of HPSI sys for B&W plants.Common-mode failure failure potential identified as result of Oconee Unit 3 event does not affect other plants.
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UNITED STATES 0
oNUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-OWI lo November 14, 1997 Mr. W. W. Foster. Chairman B&WOG Steering Committee Director of Safety Assurance Oconee Nuclear Station PO Box 1439 Seneca, SC 29679
SUBJECT:
SAFETY EVALUATION OF THE BABCOCK & WILCOX OWNERS GROUP SUBMITTALS RELATING TO THE POTENTIAL FOR COMMON-MODE FAILURE OF THE HIGH PRESSURE SAFETY INJECTION SYSTEM FOR B&W PLANTS (TAC# M99019)
Dear Mr. Foster:
During a shutdown of Oconee Unit-3 in May of 1997, two of the three high pressure injection (HPI) pumps were damaged as a result of inadequate water inventory in the letdown storage tank. Following this event, the NRC asked the Babcock and'Wilcox Owners Group (B&WOG) to review the potential for common mode failure of the HPI system and recommend proposed corrective actions for any problems that were identified.
The NRC sent questions to the B&WOG on May 27, 1997 and follow-up questions on July 21. 1997. The B&WOG responded to these requests for information by letters dated, June 5, and August 8, 1997. Based on the information provided, the staff has prepared the enclosed safety evaluation.
The evaluation concluded that the common-mode failure potential identified as a result of the Oconee Unit-3 event does not affect the other B&W plants.
The staff has requested that the licensee for Oconee perform a study to address their system reliability. The NRC review of that study is being performed under a separate, Oconee-specific action (TAC NO. M98454). Also, information provided by Crystal River indicates that there are two open items related to the questions sent by the staff. Those items are being reviewed under different staff actions and no additional work will be performed under TAC M99019. This concludes the review activity for TAC M99019.
9711190218 971114 PDR TOPRP EUTOGBw C
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November 14, 1997 If you have any questions regarding this matter please contact Mr. Joseph Birmingham of my staff by phone. 301/415-2829. or email. jlb4@nrc.gov.
Sincerely, Thomas H. Essig, Acting ief Generic Issues and Environment Projects Branch Division of Reactor Program Management Office of Nuclear Reactor Regulation Project No. 693
Enclosure:
Safety Evaluation cc w/encl:
See next page
W. Foster 2
November 14, 1997 If you have any questions regarding this matter please contact Mr. Joseph Birmingham of my staff by phone, 301/415-2829, or email. jlb4@nrc.gov.
Sincerely, Akstulewicz for/
Thomas H. Essig, Chief Generic Issues and Environment Projects Branch Division of Reactor Program Management Office of Nuclear Reactor Regulation Project No. 693
Enclosure:
Safety Evaluation cc w/encl: See next page Distribution:
Hard Copy E-Mail Bentrati*-AFl e B. Sheron PUBLIC G. Holahan PGEB r/f B. Boger T. Essig J. Roe F. Akstulewicz C. Jackson J. Birmingham D. LaBarge ACRS L. Raghaven OGC DOCUMENT NAME:
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E C/PGEB:D NAME JBirmingham:sw FAkstl wicz TC l
TEssig DATE
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