ML20058L166
| ML20058L166 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 03/18/1974 |
| From: | Larson C NORTHERN STATES POWER CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| NUDOCS 9105080338 | |
| Download: ML20058L166 (1) | |
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March 18, 1974 g
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Mr. J. G.
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Directorate o Regulstery Operations r
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Region III j
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Dear Mr. Keppler:
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FDhTICELID ?IJCLEAR GENERATIlE PIANI' j
Docket IJo, 50-263 License Ib. DPR-22
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Do March 16 and 17,1974, while perfoming local leak rate tests en pritary NN ~ # - I containment isolation valves, the following valves were founi to have leakage in excess of that allowed by the Technical Specifications:
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Valve No.
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Description "N[2Y w wn.
w.:e 16IV 2-SGA Inboard Main Steam Isolatica Valve
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AD 10-46A IPCI "A" Ioop Check Valve it.fh =m.
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b 10 2373 Inboard Main Steam Line Drain Isolayan Valve
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An investigatica intc the cause of the excess leakages will be cen+rted M n-prior to returning to pmer operation.
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Plant Manager
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i J F O' Leary, Directorate of Lir.ensing C
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Minnesota Pollution Centrol Agency
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Copies sent by telecopier to K@pler and O' Leary 9105080338 740318 CF ADOCK 05000263 C
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