ML20058N665
| ML20058N665 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 08/08/1990 |
| From: | Fraz J PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| CCN-90-14147, NUDOCS 9008140351 | |
| Download: ML20058N665 (3) | |
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- iTu 90-14147 PHILADELPHIA ELECTRIC COMPANY M
PIACH IKFIDM ATOMIC POWER STATION R. D.1,160x 208 Delta. Itnnsylvania 314 1
rac mor.oes-Tue ros em to aucutswa (717) 456 7014 o
i August 8, 1990 Docket Nos. 50-277 r
50-278 i
l U. S. Nuclear Regut.. sy Commission ATTN: Document CcMrol Desk Washington, DC 20555
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SUBJECT:
Peach Botton Atomic Power Station - Units 2 & 3 Special Report - Diesel Driven and Motor Driven Fire Pumps Administrative 1y Out Of Service At The Sake Time
REFERENCE:
Peach Botton Atomic Power Station Technical f
Specification 3.14.A.3 I
Dear Sir:
r-Description of Occurrence On August 2. 1990, 1 2 aours, the Diesel Driven Fire Pump (DDFP) was declared inoperable during testirg due to the eNine overheating.
This was caused by silt and marine biotic life plugging n Y-strainer in a cooU ng line.
The strainer wcs cleaned and the DDFP was retested on August 3,1992, et 1815 hours0.021 days <br />0.504 hours <br />0.003 weeks <br />6.906075e-4 months <br />. Although testing was satisfactory, the DOFP was conservatively continued in " inoperable" status and investigation continued concerning the overheating problem. On August 6, 1990, the DDFP was again tested and began to overheat, therefore the DDFP still remained in the " inoperable" status.
On August 7. 1990, 0145 hours0.00168 days <br />0.0403 hours <br />2.397487e-4 weeks <br />5.51725e-5 months <br />, the E-2 Diesel Generator (DG) was administratively declared inoperable. Since the E-2 DG supplies backup power to the Motor Driven Fire Pump (EFP) in cases of loss of both offsite power sources, the NDFP was considered to be inoperable per the Tech Spec definition of operabilitj, The DG was still capable of supplying backup power to the MDFP, even though the maximum start time of the DG was exceeded by.3 seconds.
During the entire time and under the worst case scenario of loss of offe,ite power, MFP could still have delivered full flow to the system, except th c it could have possibly started 3 seconds later.
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, Document Control Desk Page 2 Plans for Restoring Equipment to Operable Status The local fire Department had been contacted and were willing to provide trucks to meet the station fire water needs. The EFP was declared operable on August 7, 1990, 1430 hours0.0166 days <br />0.397 hours <br />0.00236 weeks <br />5.44115e-4 months <br />, following the E-2 DG returning to an operable
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- status, i
The plant staff will review this event and determine a course of action, with regard to both the marine life issue and the possibility of loss of both i
fire pumps.
If you have any questions, please do not hesitate to contact us.
Sincerely.
l Plant Manager cc:
R. A. Burricelli, Public Service Electric & Gas l
T. M. Gerusky, Commonwealth of Pennsylvania i
J. J. Lyash, USNRC Senior Resident Inspector l
T. T. Martin, Administrator, Region 1. USNRC H. C. Schwems. Atlande Electric R. I. McLean, State of Maryland J. Urban. Delmarva Power I
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,bcc: J. A. Basilio 52A-5, Chesterbrook
. R. 6. Charles 51A-1 Chesterbrook Commitment Coordinator
$2A-5, Chesterbrook Correspondence Control Desk 618-3, Chesterbrook
. E. J. Cullen
$23-1,.;ain Office E. P. Fogarty A4-4N, Peach Bottom J. f. franz A4-15. Peach Botton A. A. Fulv'.y A4-15. Peach Bottos D. R. Helwig 51A-11, Chesterbrook G. A. Hunger 52A-5, Chesterbrook J. M. Madara 53A-1, Chesterbrook C. J. McDermott
$13-1. Main Office D. B. Miller, Jr.
SMO-1. Peach Botton PB Nuclear Records A4-25, Peach Botton 1
M. J. Pratt B-2-S, Peach Bottoe J. 1. Robb 51A-13. Chesterbrook D. M. Smith
$2C-7, Chesterbrook i
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