05000250/LER-1979-034-03, /03L-0:on 791105,during Power Operation,Auxiliary Feedwater Pumps Tested & Pump a Failed to Start.Caused by Misalignment Between Connections to Associated Pneumatic Controller Resulting in Inoperability of Valve CV-3705

/03L-0:on 791105,during Power Operation,Auxiliary Feedwater Pumps Tested & Pump a Failed to Start.Caused by Misalignment Between Connections to Associated Pneumatic Controller Resulting in Inoperability of Valve CV-3705

ML17339A403
Person / Time
Site:	Turkey Point
Issue date:	12/05/1979
From:	Schoppman M FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17339A402	List: 05000250/LER-1979-034, Forwards LER 79-034/03L-0 05000250/LER-1979-034-03, /03L-0:on 791105,during Power Operation,Auxiliary Feedwater Pumps Tested & Pump a Failed to Start.Caused by Misalignment Between Connections to Associated Pneumatic Controller Resulting in Inoperability of Valve CV-3705
References
LER-79-034-03L, LER-79-34-3L, NUDOCS 7912190522
Download: ML17339A403 (3)

LER-1979-034, /03L-0:on 791105,during Power Operation,Auxiliary Feedwater Pumps Tested & Pump a Failed to Start.Caused by Misalignment Between Connections to Associated Pneumatic Controller Resulting in Inoperability of Valve CV-3705

Event date:
Report date:
2501979034R03 - NRC Website

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LICiBlSEE EVENT REPOBT PAGE Dv'0 Additional Cause Descri on and Corrective Actions:

1 The failure of the."A" AHJ pump to start resulted fran inoperability of CV-3705 ("A" AEN steam turbine pressure control valve).

We root cause of this inoperability was a misalignment between the manifold plugs of the pneumat.c controU.er manifold assenbly and its naunting base assembly due to loose mounting screws.

The misalignment was a randan event.

Existing preventive maintenance and AHV system periodic testing will provide assurance that a reoccurrence of this type of event willbe promptly detected.

nent Data:

Bailey I~wter Co.

Pneumatic Controller

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