ML19339C602

LER 80-036/03L-0:on 801017,standby Liquid Control Relief Valve Setpoints Found to Be Above Tech Spec 4.4.A Requirement of 1400 to 1490 Psig.Caused by Setpoint Drift. Relief Valves Adjusted,Bench Tested & Reinstalled

ML19339C602
Person / Time
Site:	Vermont Yankee
Issue date:	11/14/1980
From:	Murphy W VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19339C593	List: ML19339C592 ML19339C602
References
LER-80-036-03L, LER-80-36-3L, NUDOCS 8011180663
Download: ML19339C602 (1)

Text

NRC FOlM 366 U. S. NUCLEAR RESULATC~.Y COMMISSION

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LICENSEE EVENT REPORT LER 80-36/3L CONTAOL BLOCX

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7 6 6C 61 DOCKET NUMS E R 68 69 EVENT CATE 75 RE* ORT DATE EVENT DESCRIPTION AND PROB ABLE CONSECUENCES h j o !:; l During routine surveillance testing of the standby liquid control relief valves, thel toj3; lsetpoints were found to be above Tech. Spec. 4.4.A required setpoint of 1400 to 14901 l044 l lpsig.SR-39A setpoint was found to be 1550 psig while SR-39B was found at 1600 osie. I 1c;el l Since the system has been successfully hydrotested to 2250 psig, there were no I l o 16 l l Consequences to the public health and safety as a result of this event. Similar l lol2l [ occurrences were reported to the Corcission as LER 77-23/3L and 78-24/3L. 1

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. SE CU E NTI A L QCCURRENCE REPORT REvtsiON gg a raQ EVE F.T vf A R R EPORT NC. CODE TvPE NC.

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3J 34 36 36 d, 40 en 42 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h 11 ioll The deviation from the recuired setpoint was attributed to setooint drift. The tue !

"iyl relief valves were properly adjusted, be.nch-tested, and reinstalled into the svstem!

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