ML20077P970

Special Rept:On 910714,diesel Driven Fire Pump Out of Svc for More than Seven Days Due to Annual Preventative Maint Activities.Preventative Maint Completed & Pump Returned to Svc.Operability Testing Completed Satisfactorily on 910723

ML20077P970
Person / Time
Site:	Peach Bottom
Issue date:	08/15/1991
From:	Powers K PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
CCN-91-14124, NUDOCS 9108200157
Download: ML20077P970 (3)

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August 15, 1991 i

Docket Nos.

50-277 50 278 License Nos. DPR-44 r

DPR-56 l

U. S. Nuclear Regulatory Commission I

ATTH: Document Control Desk Washington, DC 20555 i

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SUBJECT:

Peach Bottom Atomic Power Station - Units 2 & 3 Special Report - Diesel Driven Fire Pump Out Of Service for l

More Than Seven Days l

REFERENCE:

Peach Bottom Atomic Power Station Technical Specification 3.14.A.2 t

Dear Sir:

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I Description of Occurence i

On 7/14/91, 2237 hours0.0259 days <br />0.621 hours <br />0.0037 weeks <br />8.511785e-4 months <br />, the Diesel Driven Fire Pump (DDFP) was removed from service to perform an annual inspection as part of the preventative i

mdintenance program.

Preventative maintenance was completed and the DDFP was returned to service.

Operability testing was completed satisfactorily i

7/23/91, 1435 hours0.0166 days <br />0.399 hours <br />0.00237 weeks <br />5.460175e-4 months <br />, i

Cause of the Malfunction r

The DDFP was removed from service for annual preventative maintenance activities.

Two separate maintenance problems prevented return of the pump

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within seven days.

During the operability run on 7/19/91, an electrical short caused the engine mounted voltage regulator to fail.

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bocument Control Desk Page 2 Additionally, during troubleshooting of the electrical system, a leak was identified on the cooling water line, lhe repair required the replacement of a section of the pipe.

Plans for Restoring Equipment to Operable Status lhe DDIP was returned to service //23/91, 143$ hours, if you have any questions or require additional inf ormation, please do not hesitate to contact us.

Sincerely, cc:

R. A. Burricelli, Public Service t'lectric & Gas

1. M. Gerusky, Commonwealth of Pennsylvania J. J. tyash, USNRC Senior Resident inspector T. 1. Martin, Administrator, Region 1. USNRC ll, C. Schwemm. Atlantic Electric R. 1. McLean State of Maryland J. Urban. Delmarva Power i

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Page 3 i

l bcc: J. W. Austin A4-4N, Peach Bottom e

J. A. Basilio

$?A-5, Chesterbrook i

G. J. Beck 5?A-5, Chesterbrook J. A. Bernstein SIA-13. Chesterbrook R. N. Charles SIA-1, Chesterbrook i

Commitment Coordinator

$?A-5, Chesterbrook i

Correspondence Control Program 610-3, Chesterbrook J. B. Cotton

$3A-l. Chesterbrook f

G. V. Cranston 638-5, Chesterbrook

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E. J. Cullen S?3-1, Main Office l

A. D. Dycus A3-15, Peach Hottom A. A. Fulvio A4-IS, Peach Bottom i

D. R. Helwig SIA-ll, Chesterbrook j

R. J. lees, NRB 53A-1. Chesterbrook C. J. McDermott S13-1 Main 0.'fice l

0. B. Miller, Jr.

5M0-1. Peac h Bot tom PH Nuclear Records A4-PS, Peach Bottom K. P. Powers A4-lS, Peach Bottom J. M. Pratt U-P-S Peach Bottom i

J. 1. Robb blA-13 Chesterbrook r

D. M. Smith 52C-7, Chesterbrook i

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