ML20137Y524

Forwards AEOD/T516, HPCI Overspeed Trip Loss Events & Subsequent Damage Due to Water Hammer, Technical Review Rept.Licensee Response Appropriate & Corrective Action Underway.No Addl AEOD Action Needed

ML20137Y524
Person / Time
Site:	Pilgrim
Issue date:	12/12/1985
From:	Trager E NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD)
To:	Black K NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD)
Shared Package
ML20137Y528	List: ML20137Y524 ML20137Y550
References
AEOD-T516, NUDOCS 8603120315
Download: ML20137Y524 (1)

Text

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DEC 121985

,W MEMORANDUM FOR: Kathleen M. Black, Chief Nonreactor Assessment Staff, AE00 FROM:

Eugene A. Trager Nonreactor Assessment Staff, AE0D

SUBJECT:

TECHNICAL REVIEW REPORT: HPCI OVERSPEED TRIP LOSS EVENTS AND SUBSEQUENT DAMAGE DUE TO WATER HAMMER Enclosed is a copy of the subject Technical Review report AEOD/T516.

Pilgrim experienced two water hammer events during routine HPCI operability flow testing while at 100% power, and the technical review was perfomed to determine whether the licensee's action to prevent recurrence of this type of event was appropriate. The study found that the licensee responded appropriately to the events, although this item remains unresolved pending development and approval of the licensee's final corrective action that is underway at this time. Because the licensee's corrective action is being reviewed and approved by a team of IE, NRR and Region I personnel, no additional AE0D action is needed at this time.

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Eugene A. Trager Nonreactor Assessment Staff, AE00

Enclosure:

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