ML20086G048

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Telecopy AO 75-56:on 750817,standby Gas Treatment Sys Fan OBV20 Failed to Auto Start.Cause Under Investigation. Corrective Maint Will Be Performed Subsequent to Identifying Problem
ML20086G048
Person / Time
Site: Peach Bottom 
Issue date: 08/18/1975
From: Ullrich W
PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20086G029 List:
References
A-75-56, A0-75-56, NUDOCS 8401100031
Download: ML20086G048 (1)


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1 PHILADELPHIA ELECTRIC' COMPANY Peach Botton Atomic Power Station

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License-Ilumber DPR-4h h.T.B.3.n Technical Specification

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  • Report Date:

August.It?. 1975 Occurrence Date:. Au g u st-17, 1975

,4 Facility:

Pench Botton Atomic Power Station R.D.

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Identification.of Occurrence:

Standby Gas Treatment Systen Fan.(OBV20)s failed to "AUT0" start..

i Conditions Prior to Occurrence-Unit 2 shutdown. f Description of Occurrence:

During the performance of ST 1.3. PCIS Logie Systen Functional Test, the "B"

fan failed to " AUTO" start with.the "A"

fan in " Pull To Lock" and a reactor building ventilation isolation signal.

Designation of Apparent Cause of Occurrence: -

Under investigation.

Analysis of Occurrence:

During the test, on the reactor building ventilation isolation signal.

the "A" SBGTS fan started autenatically.

In addition,'the "B"

fan operated satisfactorily manually.

Safety implications are, therefore.

minimal.

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Corrective Action:

Corrective maintenance vill be performed subsequent to identifying the problem.

Failure Data:

A previous failure of this type was reported as AO Su-277-7L-50.

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Yery truly yours.

SVWd W.

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Ullrich, Superintendent Peach Botton Atomic Power Station s

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