ML20086H921

Environ RO 75-10:on 750513,second Fan Lost on Cooling Tower B.Caused by Worn Motor Bearings.Bearings on Motor Replaced & Fan Returned to Svc

ML20086H921
Person / Time
Site:	Peach Bottom, 05002787
Issue date:	05/23/1975
From:	Meyer R PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	Giambusso A Office of Nuclear Reactor Regulation
References
RO-75-10, NUDOCS 8401200350
Download: ML20086H921 (2)

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e PHILADELPHIA ELEGTRIC COMPANY 2301 MARKET STREET o

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12151 841-4o00 /. *,

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May 23,1975 'G; .  :>

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Mr. A. Giambusso /J I).). .

Director Division of Reactor Licensing Of fice of Nuclear Reactor Regulations United States Nuclear Regulatory Commission Washington, DC 20555

Subject:

Environmental Deviation The following deviation was reported to Mr. Walt Baunack, Region 1, Of fice of Inspection and Enforcement, United States Nuclear Regulatory Commission on May 13, 1975 Ra'eranent Iicence N. & r nuo 1.1/,rf Environmental Technical Specification 2.1 Report No.: 50-277/ 278-75-10 Report Date: May 23, 1975 Deviation Date: May 13, 1975 Facility: Peach Bottom Atomic Power Station Units 2 cnd 3 R.D. 1, Delta, Pennsylvania 17314 Identification of Deviation:

Loss of a second fan on the "3" cooling tower.

Conditions Prior to Deviation:

With the tower in service, the "J" fan tripped intermittently from high vibration.

Designation of Apparent Cause of Deviation:

Worn motor bearings. p '/

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_ Analysis of Deviation: cud "f As there were nine of eleven fans running, there were no significant environmental consequences as a result of the inoperability of this fan. The water temperature leaving the tower changed only slightly. River flow during this period was in excess of 60,000 CFS.

401200350 750523 -7 DR ADOCK 0500027y COPY SENT ItEGION m ECM . -

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Mr. A. Gitmbusso '

50-277/278-75-9

' May 23, 1975. Page 2 s

Corrective Action:

o The bearings on the motor were replaced and the fan was re-turned to service.

Failure Data:

Environmental Deviation Reports 50-277/278-74-2, 50-277/278-75-1, 50-277/278-75-2, 50-277/278-75-6, and 50-277/278-75-8. -

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Very truly yours,

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, . . R. D. Meyer  ;

l' General Superintendent Generation Division cc: Mr . J. P. O'Rei lly Director, Region 1 Office of Inspection and Enforcement

, United States Nuclear Regulatory Commission j' 431- Park .^.vc..uc Kinj of Prussia, PA 19606 e

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