ML20117J990

Special Rept:On 960807,Diesel Fire Pump Disabled.Caused by Routine Maint on Pump.Completed Work on Pump,Tested & Restored Pump to Operable Status

ML20117J990
Person / Time
Site:	Calvert Cliffs
Issue date:	09/04/1996
From:	Katz P BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9609110073
Download: ML20117J990 (2)

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• PETER F. KATZ Baltimore Gas and Electric Company Plant General Manager Calvert Cliffs Nuclear Power Plant Calvert Cliffs Nuclear Power Plant 1650 Calvert Cliffs Parkway Lusby, Maryland 20657 410 495-4101 September 4,1996 U. S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION: Document Control Desk

SUBJECT:

Calvert Cliffs Nuclear Power Plant Unit Nos.1 & 2; Docket Nos. 50-117 & 50-318 Special Report Concerning an inoperable Fire Pump Technical Spssification 3.7.11.1, Action Statement a in accordance with our Technical Specification 3.7.11.1, Action Statement a, please find attached a Special Report concerning an inoperable fire pump. Specifically, the diesel fire pump was inoperable during routine maintenance for greater than seven days to support pump rebuild work. The repairs were completed on August 14,1996 and the pump was restored to operable status.

Should you have questions regarding this matter, we will be pleased to discuss them with you.

Very truly yours, for Peter E. Katz Plant General Manager PEK/DWM/bjd Attachment cc: D. A. Brune, Esquire 11. J. Miller, NRC J. E. Silberg, Esquire Resident inspector, NRC Director, Project Directorate 1-1, NRC R. I. McLean, DNR A. W. Dromerick, NRC J. II. Walter, PSC l 9609110073 960904 /

[ PDR ADOCK 05000317 l S PDR 09 nn55, p )I

, ATTACIIMENT (1) l SPECIAL REPORT CONCERNING AN INOPERABLE FIRE PUMP l

l CAUSE OF INOPERABILITY On August 7,1996 the Diesel Fire Pump was disabled to perform routine maintenance on the pump.

This maintenance included replacement of pump bearings, sleeves, shaft, and balancing. The Diesel Fire Pump is one of two high pressure pumps in the fire suppression water system. l As specified by Technical Specification 3.7.11.1, Action Statement a, if one pump is inoperable and cannot be restored within 7 days, a Special Report must be submitted within 30 days outlining the plans j and procedures to be used to provide for the loss of redundancy in this system.

l ACTION TAKEN As specified by Technical Specification 3.7.11.1, Action Statement a, with only one pump inoperable, l restore it to operable status within 7 days. The Electric Driven Fire Pump remained in service and the I

applicable sections of Operating Instruction 01-20, " Fire Protection System," which requires assigning an operator to open the fire main cross connect valve to the outside building complex fire pump house if neither fire pump failed to start. These actions remained in place until the fire pump was returned to operable status on August 14,1996.

PLANS AND PROCEDURES Work on the Diesel Fire Pump was completed, the pump tested, and was restored to an operable status on August 14,1996.

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