ML19270F562

LER 79-011/03L-0 on 790124:while in Cold Shutdown,Both Doors of Reactor Bldg Were Opened,Violating Secondary Containment. Bracket Into Which Dead Bolt Projects Was Bent,Preventing Interlock from Functioning.Bracket Was Repaired

ML19270F562
Person / Time
Site:	Hatch
Issue date:	02/09/1979
From:	Thomas Greene GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19270F561	List: ML19270F560 ML19270F562
References
LER-79-011-03L, LER-79-11-3L, NUDOCS 7902150443
Download: ML19270F562 (1)

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REPO4T DATE t' J EVENT DESCRIPTION AND PROBADLE COr SEQUENCES h l o l 21 l While in cold shutdown, plant personnel inadvertantly opened both doors of the [

o 3  ; reactor bldg.,130 ft. elevation, airlock # R106 v olating secondary containtnent. l o .i [ The standby gas treatrent system was oroven operable, insuring secondary contain- l lo ,s; ; ment integrity to comply with technical specification Section 4.7.C.2. Previous l c c 1 occurrences of this type were reported in LER's 76-75, 77-27, 77-39, 77-63, O 7 l 77-66, 77-73, 77-82, 77-95, 77-97, 78-7, 78-16, 78-25, & 79-1. l 0 8 l 1 7 8 9 80 SYSTE M CAUSE CAUSE C O'? P. VAL 2 CCDE COOE SU9 CODE CC'.*aONENT CODE SUSCOOE SUSCCOE O 9 8

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40 43 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h 1

o1 The bracket into which the dead bolt projects was found to be bent. The bracket i i i l was found to be bent to the extent it could only catch tho tio end of the dead i 1ii.i bolt. This condition prevented the interlock from performina its intended func- 1 i 3 l tion. The bracket was renaired. thus restoring the interlockina function to oner- I i .s I able status. I 7 8 9 E0 STA *.PCV.E R OTHER STA TUS ISCO FY OlSCOVERY DESCRIPTION i s LG_l@ I O I 0 l 0 l@ N/A I l@l Personnel Observation l Activi T V CO TENT RELE ASE D 08 RELEASE AMOUNT OF ACTIVITY LOC ATION OF RELE ASE li 16 l [Z_j @ l Z l@l N/A l l N/A l 7 8 9 10  : 44 45 80 PERSONNE L E nPOSunE3 NU'/H E H 1 7] l0 l0 Oj@l zTYPE @lCESCHIPTION N/A l

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• I- 1 > l Lzjg[ N/A l lllllllill ltl; 7 II *) 10 68 f,9 80 5 NAME OF PHCPAHEH Tom Greene, Suot. Pl t. Eng. Services.gggyg 912-367-7781 2, i