ML20086D649
| ML20086D649 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 06/25/1973 |
| From: | Riley B VERMONT YANKEE NUCLEAR POWER CORP. |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20086D635 | List: |
| References | |
| AO-73-18, VYV-2750, NUDOCS 8312020431 | |
| Download: ML20086D649 (2) | |
Text
.) a VERMONT YANKEE NUCLEAR POWER C RPORATION 37
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i' United States Atomic Energy Concission
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REFERENCE:
Operating License DPR-28 gg3" Docket No. 50-271 8
Abnormal Occurrence No. A0-73-18 Centlemen:
As defined by Technical Specifications for the Vermont Yankee Nuclear Power Station, Section 6.7.A.c, we are reporting the following Abnormal Occurrence as A0-73-18 and confirming our telephone conversation with your effice.
At approximately 1015 on June 25, during conduct of RCIC Surveillance Testing, a Bart'on differential pressure switch sensing RCIC steam line high dif ferential pressure (DPIS 13-33) actuated at -150" ti 0.
This constitutes 2
a violation of the pressure setpoint specificd in Table 3.2.2.3 of Technical Specifications, which requires actuation at a pressure 1180 15" li 0.
The 2
reactor was at approximately 78% power at the time of this incident.
The switch was immediately reset, functionally tested 10 times, and verified to be within the tolerance specified during all ten functional tests. This remedial action was completed in a time span that precluded the necessity of further immediate action.
Very truly yours,
VERMONT YANFEE NUCLEAR POWER CORPORATION i
V B.W. Riley "k
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Plant Superintendent PET /kbd Y"
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b Abnortnal Occurrence:
A0-73-18 H2 umm 2
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To (name ana.a.t) an 1:ats armaans
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DR Central Files (1)
The attached rnport from the subject licensee is cart Regulatory Standards 3) l, Dir. of Licensing (13i forwarded in accordance with RO Mnnual Chnnter lonn.
10 (Ha ma and wn.t) eNiltal$
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Ro riles The action taken by t.he licensee is considered Central Mai1 6 Files nts appropriate'.
Fo11ovup will be performed during t
the next inspection as annropriate.
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the report have been fort.'arded to the PDR, Local e -_,-
i R. T. Carlson, Chibf F.F Facility Operations PDR, NSIC, DTIE and State representati'Jes. The 1k Branch, RO:I licensec vill submit a 10 day written report to g,..,-f,.
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