ML20086G241
| ML20086G241 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 05/07/1976 |
| From: | Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Stello V Office of Nuclear Reactor Regulation |
| References | |
| RO-76-23, NUDOCS 8401100128 | |
| Download: ML20086G241 (2) | |
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h.iLADELPHIA ELECTRIC COMPANY 2301 MARKET STREET PHILADELPHIA. PA.19101
- 2:si a414ooo f-May 7, 1976 R
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Mr. Victor Stello, Jr.
Director h
f Division of Operating Reactors x
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!i Office of Nuclear Reactor Regulations United States Nuclear Regulatory Commission i
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Washington, DC 20555
Dear Mr. Stello:
Subject:
Environmental Deviation The following deviation was reported to Mr. Walt Baunack, Region 1, Office of Inspection and Enforcement, United States Nuclear Regulatory Commission on April 29, 1976.
Reference:
License Number DPR-44/56 Environmental Technical Specifications:
2.1 Report No.:
50-277/278-76-23 Report Date:
May 7, 1976 Deviation Date: April 29, 1976 Facility:
Peach Bottom Atomic Power Station Units 2 and 3 R.D. 1, Delta, PA 17314 Identification of Deviation:
Two cooling towers simultaneously inoperable.
Conditig.s Prior to Deviation:
Unit 3 operating at full power. Unit 2 off for a refueling outage. The 'A' cooling tower was out of service due to a previous lift pump bearing failure. The 'B' cooling tower was fully operable during the outage. River flow was about 39,000 CFS.
Description of Deviation:
The 'C' cooling tower was removed from service for 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, making two cooling towers inoperable.
8401100128 760507 l
PDR ADOCK 05000277
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Mr. Victer Stollo, Jr.
5 7/278-76-23 May 7, 1976 Page 2 g
Designation of Apparent Cause of Deviation:
The 'C' tower was removed from service to erect scaffolding and repair a section of the tower structure. The structure was j
previously damaged when a shaft line bearing housing was thrown free l
and fell through the structure.
l l
Analysis of Deviation:
I Differential temperatures between the Pennsylvania-Maryland i
State Line and Holtwood Dam remained within Pennsylvania State limits.
Single unit operation during this period uinimized the thermal impact of this deviation.
Corrective Action:
The 'C' tower was returned to service subsequent to completing replacement of shaft line bearing housing.
Failure Data:
None.
Very truly yours, M
. Cooney perintendent Generation Division-Nuclear l
cc:
Mr. J. P. O'Reilly NRC, Reg. Office l
,i
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