ML20041B249

LER 82-006/03L-0:on 820114,B Oxygen Analyzer for Containment Atmosphere Dilution Sys Found Inoperable W/Low Flow on Span & Zero Gas.Caused by Defective Procedures.Bypass Flow Adjusted.Procedures Will Be Revised

ML20041B249
Person / Time
Site:	Duane Arnold
Issue date:	02/12/1982
From:	Varner D IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20041B242	List: ML20041B241 ML20041B249
References
LER-82-006-03L, LER-82-6-3L, NUDOCS 8202230427
Download: ML20041B249 (1)

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lo l2l IDurino normal operation, the 'B' oxvoen analyzer for the containment atm i fo TT1 losphere dilution system was found to be inoperable with low flow on span- 1 In 6 41 I and zero cas. The ' A' oxvaen analyzer was inocerable for modifications. 1 Io f s i ! Actions were bequn to take the reactor out of power operation as requir i lo!sIled by Technical Snocificatinn 1.7 A 6 c fnr hnth anniv7 pre hninn innnora l l a 6 71 lble. Reactor returned to previous power level 40 minutes later when 'B' I i o is i lanalyzer made operable. No previous event with similar cause. I 4C 7 8 9 4 CCot $ C 6 COMPCMENT CCOE Sus a su loisl l S l E l@ W@ l Z l @ l I l N I S I T l R l til@ [_X,,,,j @ [Z,,J @

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i n t o 1 IThe cause is attributed to defective procedures which insufficient 1v det I li t i i lailed the adiustment of the bynass flow reaulator on tho analvvor. Tho i I li ,21 incorrect adiustment of this bvoass flow reaulator rosultod in inw finw t I l i i s i lo the sensino element. Rvnass flow was adiosted and tho analv7pr tocted I li1 1 lsat. Procedures will ho annrnnriatolv modified. Anal . mannf. hv Cnmcin I s a 2 no STA  % POWf R QTWORSTATVS ,O Y OISCCVERY CESCMiPTiON li 151 [,E j@ l 01 81 61@l NA l [,,_A_j@l Opera tor Observation l

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