05000298/LER-1979-022-03, /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

/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: 05000298/LER-1979-022, Forwards LER 79-022/03L-0 05000298/LER-1979-022-03, /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
References
LER-79-022-03L, LER-79-22-3L, NUDOCS 7909280433
Download: ML19208D442 (1)

LER-1979-022, /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

Event date:
Report date:
2981979022R03 - NRC Website

text

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

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h (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATIONI 1

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7 8 9 LICENSEE CODE 14 15 LICENSE NUMBER 25 2A LICENSE TYPE J0 57 CA T $3 CON'T A 11 7 7 lo hln l 9 nl 7l 7 o@

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60 61 DOCKET NUVS ER 68 63 EVENT OATE 74 75 REPORT OATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h k nn e 4 n g_,j O

2 During normal operations, water was observed co-ing from rho c,rknn,Acnrhne of Standby Gas Treatment System "A".

The deluge system had not been initiated and g

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the valve was found closed. The carbon adsorber trays were sprayed with water and l

n rendered inoperable per RTS 3.7.B.3.

There were no adverse effects on public health l 0

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6 l and safety. Redundant system was available. The event is repetitive, see LER 79-21. l 0

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CAUSE

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o The cause of this event is attributed

• n i n., do m m e n an, ring

,rn, kortnon..,1..o 1,7 a v and latch, system 22 Automatic Sprinkler Corp. of American Deluge Valve.

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was replaced and adjusted to provide sufficient seating area.

The carbon adsorber I

l was dried out and the system returned to normal.

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ACTIVITY CONTENT RELEASED OF RELE ASE AMOUNT OF ACTIVITY LOCATION OF RELEASE W l_.Z} h [Z,j h l 7

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10 11 44 45 80 PERSONNEL EXPOSURES l 0 l 0 l0 lhlTYPEZlhl NUveER CESCRIPTION NA i

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8 3 11 12 80 LOSS OF OR D AMAGE To FACILITY Q j

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NAME OF PREPARER PHONE: