ML20010C194

LER 81-023/03L-0:on 810625,pressurizer Code Safety Valve 2PSV-4833 Seat Leakage Found.Cause Not Stated.Valve Gagged & Returned to Svc

ML20010C194
Person / Time
Site:	Arkansas Nuclear
Issue date:	07/17/1981
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20010C192	List: ML20010C191 ML20010C194
References
LER-81-023-03L, LER-81-23-3L, NUDOCS 8108190233
Download: ML20010C194 (1)

Text

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NRC FORM 364 .

U. S. NUCLE AR REGULATORY COMMISSION (7-77)

LICENSEE EVENT REPORT EXHIBIT A CONTROL BLOCIC: l l l l l el Ih (PLE ASE PRINT OR TYPE ALL REQUiREO INFORMATION) 7 o i 8 9 1 AlR l Al Nl 0 l 2 [gl 010 l LeCE LICENsit CODE e4 is

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s I 8 60_ 61 DoCEET NUM8ER in8 E8 EVENT OATE le 75 htPOHfDATE 80 EVENT OESCRIPTION AND PROBADLE CONSEQUENCES h o 2 IDuring Mode 3 operation, Pressurizer Code Safety valve, 2PSV-4833, seat i o

lleakaae occurred as indicated b_v Control Room indication of increased I o 4 trelief line temperature. The valve was manually aaaae'd in the closed I o s iposi_ tion, rendering it inoperable. The redundant safety valve, 2PSV-4834,i o e tremained operable. This occurrence is similar to LER Number 50-368/80-020s o i IRecortable oer T.S. 6.9.1.9.b. I 10181 1 I

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CAUSE DESCR4PTION AND CORRECftVE ACTIONS i o l The valve was aaaaed to stop weeDaae that was oresent followina the valver

[] 0 i repair conducted d_u_rina the Drevious refuelina outaae. The valve was J ,

, 2 I successfully bench tested orior to placina it in service. The aaa allowed i

l the valve disk to cool and reseat. The valve was returned to service I i . I within the requirements of T.S. Action Statement T.S. 3.4.3.a.

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