ML19208D422

LER 79-021/03L-0:on 790811,carbon Absorber in Standby Gas Treatment Sys B Was Wetted W/Water When Control Room Received Actuation Alarm for Deluge Sys.Caused by Improper Installation of Baseplate of Fire Detection Unit

ML19208D422
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
ML19208D403	List: ML19208D402 ML19208D422
References
LER-79-021-03L, LER-79-21-3L, NUDOCS 7909280407
Download: ML19208D422 (1)

Text

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,NRC40RM 366 U. S. N'JCLEAR REGULATORY COMMISSION (7 71)

LICENCE EVENT REPORT (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

CONTROL BLOCK: l 1

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? 8 9 LICENSEE COOE 14 15 UCENSE NUMBER 25 26 UCENSE TYPE JO S1 CAT $8 CON'T 7

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EVENT OATE 74 IS REPORT DATE DOCK ET NUM8ER EVENT DESCRIPTION AND PROSABLE CONSEQUENCES h o 2 The plant was at steady state operation when the control room received an actuation I o 3 l alarm for the deluge system on the Standby Gas Treatment System "B" carbon adsorber. l o 4 lThe carbon adsorber in Standby Gas Tre.; ment _ System "B" was wetted with water and l o s l rendered inoperable per RTS 3.7 B.3. There were no adverse effects on public health l o e land safety. Redundant system was available. [

0 7 l l 0 8 l 1 7 8 9 80 SYSTEV CAUSL CAUSE COVP. VALVE CODE CODE SUSCODE COMPONENT CODE SU8 CODE SUSCODE 7

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_ SE QU E NTI A L OCCURRENCE REPORT REVISION LER RO EVENT YEAR REPORT NO. COOE TYPE No.

O aEV E

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32 K N AC ON ON PLANT MET HOURS S B IT FOR b 8. SUPP LI E VANUFACTURER lA 33 l@lZ 34 l@ [j;.j@

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40 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS i o lThe cause of this event is attributed to improper installation of baseplate of fire [

i , jdetection anit (Pyrotronics Model DFS-3). Intermittent actuation of fire protection l .

, ,,  ; system was caused by the lead wire being " pinched" between baseplate and a metal fit- [

i , l ting attaching a piece of flexible conduit. The carbon adsorber was dried and a new l i 4 l baseplate installed ensuring the wire was not pinched. [

7 8 9 80 STA S  % POWER oTHER$TATUS IS O R DISCOVERY DESCRIPTION i 5 gg l0 5 l0 lgl NA l lAlgl Alarm Actuation l

A TlVI TY CO TENT aELEASED OF RELE ASE AYOUN e' OF ACTivlTY LOCATION OF RELEASE 1

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90 PERSONNEL EXPOSURES NUU8ER TYPE DESCRIPTION i 7 l 0 l 0 p l@l Z l@l NA j PERSONNELlw31ES NUv8ER DESCRIPTION 7

i a 8 9 0l0 0l@l 11 12 NA 80 i

i PE DESC PT O NA 79092809 y' 7

9 4 3 W @l'O l 80 ISSUE () e 1.j_1.o_] l N f@lDESCRtPTION NA l ll lllll[l ll l}

7 8 3 ?O 68 69 80 5 Lynn F. Dunton 402-825-3811 o NAVE OF PREPARER PHONE. $