ML19308A498

Abnormal Occurrence 74-05:on 740531,leak Developed in 1B Makeup Pump Recirculation Flow Orifice.Pump Removed from Svc & Leaking Orifice Isolated.Pump to Be Replaced

ML19308A498
Person / Time
Site:	Three Mile Island
Issue date:	06/03/1974
From:	Herbein J METROPOLITAN EDISON CO.
To:
Shared Package
ML19308A499	List: ML19308A498 ML19308A500
References
NUDOCS 7910250695
Download: ML19308A498 (1)

Text

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METPOPOUTAN EDISON COMPANY su$rmSroracum.rusucummescovoumw ' , y

.i wc y 137 cmOE BOX 480 MIDDLETOWP ,PENNSYi.VANfA 17057 TEi.EPHOfE717-G44-4041

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- June 3,1974

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Mr. 3.P. D'Re133y, DirectDt -

Directorate of Regulatory Operations Region I n h f 631 Part Avenua King of Prussia, Pa. 19405 , . ,

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Q[] d Operating 1.fcense DPR-50~ '

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Cocket 50-239

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Stbject: Abnorsal Occurrence fio. A0 74 '

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• Ocar Mr. C' Ret 11y: '

This telegras is to confins a conversation between 1.1 Spessard (Region I-ORG),

and J.G. Herbein (THI Secertatendent) at 1500 HRS. 31 Rsy 1974.

The foiicwirs re1: oft is setsfi.ted in accordance with paragraph 6.7.2.a.2 (page 6-11) of the Technical S;scificatic..

On 37 By I?74, et 1345 a pinh31e sized leak deveteped in the "lB* cake-up pxp recirculation ficse orifice.

The 13 n3te-up pu p was la service and the reactor coolant systes was in a heat-up toda at the ttee the leak in the orifice was discovered.

F611cy'ing discovery of the leak, th21A r,3ke-up pu:ap was placed in service, the 1B nake-up pu:p was renoved frc: serrfce and the leskfng crfffee was fsolatd.. ,

The leaking orifice will be removed.and replaced with a stattar orifice.

. Very truly yours, -

^ 5/Ah

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.G. Herbein Station Super 1ntendent THI Nuclear Station

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