ML20147G153
| ML20147G153 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 03/03/1988 |
| From: | Franz J PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Russell W NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM), NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| NUDOCS 8803080144 | |
| Download: ML20147G153 (2) | |
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+.3 PHILADELPHIA ELECTRIC COMPANY
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PEACH BOTTOM ATOMIC POWER ST ATION p
' R. D.1. B O X 2 08 DELT' PENNSYLV ANI A 173 8 4 A
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March 3, 1988l-W. T. Russell, Administrator United States Nuclear Regulatory Commission Region 1-
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ATTN: Document Control Desk
-, Washington,.D.C. '20555
SUBJECT:
'REPORTABt.E OCCURRENCE - Both Fire Pumps Out Of Service At Peach Bottom Atomic Power Station'
Dear Mr. Russell:
Confirming Shift Manager telephone conversation with Mr. Smith,
. Duty Officer, Region 1. United States Nuclear Regulatory Commission on 3/2/88.
~ Re fe rence : Docket No. 5-277/278 Peach Bottom Units 2 and 3 Technical Specifications 3.14.A.3 b Identification of occurrence:
The diesel driven fire pump was taken out of service for maintenance at'10:30 PM on March I, 1988. At 9:04 PM on March 2, 1988, the-motor. driven fire pump-became inoperable when the E-224 breaker tripped.
At this time;.both fire pumps were inoperable. The Technical Specifications require that if both fire pumps are inoperable, the NRC must be notified by telephone and-in writing.
Conditions Prior to Occurrence:
l
. Unit 2 cold shutdown
. Unit 3 refuel Apparent Cause of Occurrence:
' The breaker feeding the motor driven fire pump, E-224 breaker, tripped as a result of the failure of the E-22 bus undervoltage relay.
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LCorrective Action:
At-19:34 PM,'the breaker automatically-reclosed. Due to the suspected..
unreliability of'the E-22 bus, temporary jumpers were installed at 5:03/AM to supply the E-224 load center from the E-424 load center. Both fire pumps were out-:of service' for 30 minutes.
Previous Occurrence:
On June 29, 1984,.both fire pumps were inoperable due to a fire header break in the' Turbine Building. On July 31, 1987, both fire pumps were inoperable due to repairs that were being made to the fire header.
Very truly yours,-
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. Plant Manager WW die JFF/DDS/ DAB:waf Tac.
cc:
T. P. Johnson, NRC Resident Inspector l
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