ML20058K683
| ML20058K683 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 08/26/1974 |
| From: | Larson C NORTHERN STATES POWER CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| NUDOCS 9102130458 | |
| Download: ML20058K683 (1) | |
Text
!
r NONTHERN STATES P O W' E R C O ht. P A N.Y-
!l, Monticello, Minnesota 55362 I
August 26, 1974 r,
Mr. J. G. Keppler, Regional Director Dinctorate of Regulatory Operations Region III 799 Roosevelt Road Gian B11yn, Illinois 61073
Dear Mr. Kappler:
MNTIcmJn NUCLEAR N lY/WT thw-ket No. 50-263 License No. DPR-22 Maile perfer ing Youtine primary containment isolation valve exezrising on 26, 1974, the Reactor Coxe Isolation Cooling systaa osstboard steam August isolation valve did not go full closed when given a close signal.
After opening the valve fhlly, it went full closed on the secorvi closure atte:pt.
De cause of the valve closure failure is uruler investigation.
v- - eg.
s Co B..
Plant Manager CEL/nues cc: J F O'Imary, Directorate of Licensing G Otarnoff Minnesota Pollution Control Agency Attn:
E A Pryzira Pile Copies sent by telecopier to Keppler arx1 O'Icary 9102130458 740826 ADOCK050g63 CF
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