ML20086G415
| ML20086G415 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 09/08/1975 |
| From: | Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Boyd R US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| RO-75-16, NUDOCS 8401110360 | |
| Download: ML20086G415 (2) | |
Text
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September 8, 1975
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' k W[,* M Mr. Roger S. Boyd
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Acting Director Division of Reactor Licensing Office of Nuclear Reactor Regulations United States Nuclear Regulatory Commission
Dear Mr. Boyd:
Subject:
Envi ronmental Devia tion The following deviation was reported to Mr. Walt Baunack, Office of Inspection and Enforcement, Region 1, United States Nuclear Regulatory Commission on August 29, 1975.
Reference:
License Number DPR-44/56 Envi ronmental Technical Speci fications 2.1 Report No.:
50-277/278-75-16 Report Date:
September 8, 1975 Deviation Date: August 29, 1975 Faci li ty:
Peach Bottom Atomic Power Station Units 2 & 3 R.D. #1, Delta, Pennsylvania 17314 Identification of Deviation:
Inoperabili ty of
'B' cooling tower for approximately two hours wi th river flows less than 10,000 cfs.
Condi tions Prior to Deviation:
Units 2 and 3 were operating at approximately 55% power.
Description of Deviation:
At approximately 2:40 p.m.,
on August 29, 1975, the 'Br cooling tower lif t pump tripped. River flows at thi s time were ap-proximately 7800 cfs.
The
'A' and
'C' cooling towers were operational at this time.
Designation of Apparent Cause of Deviation:
[O h Tripping of the
'B' cooling tower lif t pump was traced to
/-/7 M plugging of the lubricating water to the pump shaf t.
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8401110360 750908
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50-277/278-75-16 Mr. Rog$r S. Bol Srptember 8, 1975 Page 2 Analysis of Deviation:
The total period of time that the
'B' cooling tower was out of service was approximately 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />.
Temperature monitoring did not show any signi ficant changes in downstream river temperatures during the period the cooling tower was out of service. This deviation is not expected to have a significant effect on river temperatures.
Corrective Action:
The
'B' cooling tower lif t pump lubricating water filter and flow switch were cleaned and the pump returned to service.
Stable lift pump operation was accomplished at 4:25p.m.on8/29/75.
Failure Data:
Envi ronmenta l Deviation Report 50-277/278-75-13 Very truly yours, M.J./ooney Asst. Gen l. Supt.
Generation Division cc:
Mr.- James P. 0 8Reilly, Di rector, Region 1 Office of Inspection and Enforcement United States Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA 19406 l
.