05000313/LER-1980-032-04, /04L-0:on 800905,during Cooldown Following Steam Generator Tube Leak,Excessive Release of Radioactive Matls in Gaseous Wastes Occurred.Caused by Premature Lifting of Letdown Relief Valve PSV-1236.Valve Was Readjusted

/04L-0:on 800905,during Cooldown Following Steam Generator Tube Leak,Excessive Release of Radioactive Matls in Gaseous Wastes Occurred.Caused by Premature Lifting of Letdown Relief Valve PSV-1236.Valve Was Readjusted

ML19338F126
Person / Time
Site:	Arkansas Nuclear
Issue date:	10/01/1980
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19338F117	List: 05000313/LER-1980-032, Forwards LER 80-032/04L-0 05000313/LER-1980-032-04, /04L-0:on 800905,during Cooldown Following Steam Generator Tube Leak,Excessive Release of Radioactive Matls in Gaseous Wastes Occurred.Caused by Premature Lifting of Letdown Relief Valve PSV-1236.Valve Was Readjusted
References
LER-80-032-04L, LER-80-32-4L, NUDOCS 8010070549
Download: ML19338F126 (1)

LER-1980-032, /04L-0:on 800905,during Cooldown Following Steam Generator Tube Leak,Excessive Release of Radioactive Matls in Gaseous Wastes Occurred.Caused by Premature Lifting of Letdown Relief Valve PSV-1236.Valve Was Readjusted

Event date:
Report date:
3131980032R04 - NRC Website

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NRC PORM 366 U.S. NUCLE AR REGULATORY COMMtsSION LICENSEE EVENT REPORT EXHIBIT A CONTROL BLOCst: l l l l l l lh (PLEASE PRINT 04 TYPE ALL REQU1 RED INFORMATION) i 6

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,,u EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES o, i During cooldown following a st m generator tube leak, the rate of release i of radioactive materials in gaseous wastes was such that 1 MPC at the site ran Iboundary was exceeded, assumina worst case meteorology conditions (2.2 1

o 4 IMPC at site boundary).

Actual meteoroloav conditions proiected 0.25 MPC l e s oa lat site boundary.

RCS letdown was immediately secured on hiah stack mon-1 Iitor indication.

No similar occurrences.

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