ML20127L226

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Informs That Listed Valves Found to Leak in Excess of Acceptance Criteria for Local Leak Tests Specified in TS
ML20127L226
Person / Time
Site: Monticello 
Issue date: 09/15/1975
From: Larson C
NORTHERN STATES POWER CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 9211230461
Download: ML20127L226 (1)


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Muticclio, ti:mesota WM Septaber 15,1WS-Mr.. J'.. G. Ecppler, Director Regiom III Office of Inspecttm and Enforement' Unite:U States Nw1 car Reguistory Ccanissim-7B9 Rooswelt' Road' Glen Bilyn, Illinois-60137.-

Dear Mr. Keppler:

11NfImi.In Nik'*,1IAR QNERATING PLAhTF Docket No.. 50-263 License No.. DPR-22" i

Written correspendence witE your office an. January 16L 1975, discusses.

l reportire of refueling outagc valve leabgo prohlansi As discussed:in that correspondence, penetration.and isointion valwleabge rates which-cxceed the acceptance crittria outlined in Section,4.7.K.2.f of the Technical: Specifications will be reported within 24' hcurs by telephcae.

and: telegrcph to the'Directac, Regi<n III, Office of Inspection and Enfomcmcnt with.a carbca-copy to the. Director,. Div.ision-of Reactor:

Licensing.

A? Licensee Event Rcqxrrt will be sutnittedi to-the Director,..

Divisi(n of. Reactor Licensisg within 10! days following repair of all-leaking valves..

In accordance with these reporting requironents,. notification.is hereby.;

inaic that the foricwing. valves were founi' to.lcak in; excess of the-acceptance criteria for local leak tests specifitxi in Secticm.4'.72.2.f of the Technical Specifications:

Core Spray Testchie Check Valve, A0'14-13A Core Spray Testable Check Valvo, A0;14-1310 Mtin Stems Drain Isointion Valve, FD 237.3-10UI Exhaust Line Check. Valve, HPCI-9:

gaM The. total' testable penetntion and'isointicn valve Icakage rate acceptance criteria-specified; by Tecinical. Specification 4'.7 A.2.f.(2)(a). was exceeded

&o 88 when the leabge through Core Spray Testablo Check Valve >D 14-133.was;

+0 found to be 153.0<SCFH.,

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$g Yours very t y,,

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bbaticello Nuclear Generating Pinnt CEL/mma cc:: R S Boyd,.G.Chamoff, Minnesota Polluticn Contr :3 Agency. Pile aten.

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