ML20086H295
| ML20086H295 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 09/29/1972 |
| From: | Rosalyn Jones VERMONT YANKEE NUCLEAR POWER CORP. |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20086H282 | List: |
| References | |
| AO-50-271-72-06, AO-50-271-72-6, VYV-2269, NUDOCS 8401160328 | |
| Download: ML20086H295 (1) | |
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vsnNoN. VERMONT 05S54 September 29, 1972 United States Atomic Energy Comission' Directorate of Regulatory Operations, Region I 970 Broad Street Newark, New Jersey 07102
REFERENCE:
Operating License DPR-28 Docket No. 50-271 Abnomal Occurrence No. A0-72-06 Gentlemen:
As defined by Technical Specifications for the Vermont Yankee Nuclear Power Station, Section 6.7. A.c, we are reporting the following
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Abnortul Occurrence as A0-72-06 and confiming our teleptione conversation with your office on this date.
At approximately 10:30 a.n. on September 28, during conduct of the monthly curve 111ance on the Reactor Core Isolation Cooling (RCIC) System instrumentation, one channel of the steam line high d/p isolation failed to operate at 160 (+ 15) inches of water as required by Table 3.2.2.3 of Technical Specifications. At this timo the Reactor was operating at approximately 18% power. Inspection revealed that the common lead between the conduit fitting and the switch torninal board f or DPIS 13-84 was found to be broken.
The broken lead was it: mediately repaired and the switch was functionally tented end verified to be operable. This remedial action was completed in a.
tine span that precluded the necessity of further in:mediato action.
Very truly yours, DOh o[hghjjg VERMONT YANKEE NUCLEAR PWER CORPORATION h.
ftL ' Robert F. Jone -
Plant Superintendent IME/kbd