ML20086E790
| ML20086E790 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 01/25/1974 |
| From: | Riley B VERMONT YANKEE NUCLEAR POWER CORP. |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20086E784 | List: |
| References | |
| AO-74-01, AO-74-1, VYV-3146, NUDOCS 8312070522 | |
| Download: ML20086E790 (1) | |
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o'L K) Vicw MONT Y A NK EM NucL1cAu l'ow MR CON 1'ON ATioN MU GCVCtJ TY U CVC tJ Of tOVf* GTitt:GT Rt )TI. AND, Yld t M O NT 05701 VYV -3146 e+ r ror i ci s'.
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VLtdMOt4T o:33 3'4 January 25, 1974
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". t Unit ed ';t at t : A t 0: 'c 1:nergy Cor:ilsnion
,p' lif t ect orate of Regula tory Operations, Region 1 631 Park Aveno"
..y ning of Prut.cla, Penn:.y lvan i a
- 1. 4 0 fi J.'d @. 8 M.f :
W REFl:RE::C",:
Operat ing 1.1 ccuse DPR-2 !!
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Abnorail Occurrence 1;o. A0-74-01 sn/
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An defined by Tect.nical Speci fications for t.he Vernant Yankee
!;uclear Peeer Station, Section 6.7.B.1, we are report ing t he following Abnorrnal Occorrence.< A0-74-01.and conif ruing our t elophone convernation uith your office.
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A t. approxinately 2327 on January 24, 1974, uhile performing a L e t:1. annocialed with the plant startup tent. program, a reactor scram occurred an a renu]t of a turbine t ri p.
Suhncquent. to the r:c t an, a prieary cor.t ain:;ent fro]ation signal van initiated cauning aut ouatic c]onure of the r.ain stean inolation valven.
All valves cloned uith the exceptlon of valve 2-SOC.
Thin condition van deterrJned t o be in violation of Technical Specifications, Section 1.A.S, in that it result ed in abnorraal degradation of one of the neveral boundarie:, which are designed to contain the radioactive l
materialf; renult ing f rom the fit.nion procens.
The reactor van in
.l n shut down condit f o:2 at the tine of thin incident.
f The io.mediat e program vill deternine the canne of the valve failure and apply corrective action prior to renuming plant operation.
I Very truly yot.rn, 8312070522 740131
.VElWONT YAt;KEE 1:UCL1:AR POUCR ConPORATION PDR ADOCK 05000271
-l B.U. Kiley
,/1 plant Superintendent
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