ML19210A184

Abnormal Occurrence 75-28:on 750820,during Test of Turbine Drive Emergency Feed Pump,Associated Valve Failed to Remain Open.Caused by Failed Pressure Switch

ML19210A184
Person / Time
Site:	Three Mile Island
Issue date:	08/23/1975
From:	Colitz J METROPOLITAN EDISON CO.
To:
Shared Package
ML19210A182	List: ML19210A181 ML19210A184
References
NUDOCS 7910240906
Download: ML19210A184 (2)

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Subject:

f.Snamai Occurrence I;o. AD 75-28 Daar I:r. O'P.cilly:- .

This teingra a is to confim tha cont'orsation between Lee Spassard (T.:-ica I-!:IC) and J.J. Colitz (T 'l Unit 1 Supertr. ten:"ont) at 10C0 hcurs on 23 ; July r_sG.

The folicaing rep 0rt is sch.zittcd in accordance with paragraph 1.3.d (page 1-C) of the Technical Specifications.

On Aunust 20. D75 the Turbine Driven Emergency Feed Pump was run for Serveillanct Tes tir.g. The pump cperated successfully on steam supplied frco A Steca Generacor thrct.gn P.3 V13,L.L' hen an attc pt was cade to test the picp on ste .a suppvied frca the B Steam Generator, the associated valve, t3 V133, opened in response to pressing the opan pushbutton but closed when the open pushbutten tas re-1er. sed.

Investigaflon revealed a failed pressure switch. The failed press.r0 switch would havc, prevented the valve opening on an autcr tic start signfi.

The pressure switch was replaced and the Turbine Driven Feed Fc-> t ; successfulb~

tested an stea:t supplied from the a steam Gc cratc:r vithin the 4.' ~ -

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