ML19208D442

LER 79-022/03L-0:on 790812,water from Carbon Absorber Housing of Standby Gas Treatment Sys a Sprayed Carbon Absorber Trays,Rendering Trays Inoperable.Caused by Inadequate Seating Area Between Valve Clapper & Latch

ML19208D442
Person / Time
Site:	Cooper
Issue date:	09/07/1979
From:	Dunton L NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19208D441	List: ML19208D440 ML19208D442
References
LER-79-022-03L, LER-79-22-3L, NUDOCS 7909280433
Download: ML19208D442 (1)

Text

NRC FQRM 366 U. S. NUCLEAR REGULATORY COMMISSION (7 7D LICENSEE EVENT REPORT CONTROL BLOCK: l 1

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74 75 REPORT OATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h O 2 During normal operations, water was observed co-ing from rho c,rknn ,Acnrhne k nn e 4 n g_,j g 3 ; of Standby Gas Treatment System "A". The deluge system had not been initiated and n , the valve was found closed. The carbon adsorber trays were sprayed with water and l 0 s rendered inoperable per RTS 3.7.B.3. There were no adverse effects on public health l 0 6 l and safety. Redundant system was available. The event is repetitive, see LER 79-21. l 0 7 l 1 O s 1 I 7 8 3 80 SYSTEM CAUSE CAUSE C OY P. VALVE CODE CODE SUSCODE COYPONENT CODE SUBCOCE SUBCODE O 9 l A l8 @ (g_J@ [3_J @ I v i r I r I v I r I .c l@ (d@ U @ -

7 8 9 10 11 12 13 18 D3 20 SEQU ENTI AL OCCUAAENCE REPORT REVISION LER. AO EVENT Yt AR R EPOR T NO. CODE TYPE NO.

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_ l21 22 23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SH UT DOWN ATT ACHM E NT N P R D-4 PRIVE COMP. COMPONENT TAKEN ACTION ON PLANT METHOO HOURS SUBYITTED FORMdVB. SUP7LI E R VANUFACTURER lJ3Al@l34Gl@ W@ lZlh 35 36 31 0l d d 0l 40 dj@

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42 l@ lLlh 43 44 A 6 0 l 5 lh 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h o The cause of this event is attributed *n i n ., do m m e n an, ring i ,rn, kortnon . . ,1. .o 1,7 a v

[i i and latch, system 22 Automatic Sprinkler Corp. of American Deluge Valve. The c1 m o- -

, , was replaced and adjusted to provide sufficient seating area. The carbon adsorber I i 3 l was dried out and the system returned to normal. l 1 4 l l 7 8 9 80 SA S  % POW E R OTHERS1ATUS 015 O RY DISCOVERY DESCR'PTION i s E@l0 7l8l@l NA l l Bl@l Operator Observation l ACTIVITY CONTENT RELEASED OF RELE ASE AMOUNT OF ACTIVITY LOCATION OF RELEASE W l_.Z} 4 9 .,

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