ML19330C724

LER 80-028/03L-0:on 800621,during Routine check,off-gas Radiation Monitors Found Reading Low.Caused by Problems W/ off-gas Condenser Affecting Flow to off-gas Sample Rack. Sample Flow Adjusted

ML19330C724
Person / Time
Site:	Pilgrim
Issue date:	08/05/1980
From:	BOSTON EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19330C720	List: ML19330C719 ML19330C724
References
LER-80-028-03L, LER-80-28-3L, NUDOCS 8008110390
Download: ML19330C724 (1)

Text

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R)[@ @@!@ M ' ~ .U S. NUCLEAR REGULATORY COMMISSION (7 77)

, LICENSEE EVENT REPORT 1

' CONTROL SLOCK: l 1

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6 lh (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) lo j i8l 9l M l UCENSEE 7

A l P lCCCE P l S 14l 1 lgl5 0l 0l -l 0 UCENSE 1

l 0 l 0NUMSER l 0 l 0 l- l 0 l 025 l@l26 4 l UCENSE 1l 1 l TYPE 1l 1JCl@l5 7 CAT l l@

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lol11 $uRCE l L gl l 5 l0DOCKET l -l NuMSER 0l 2l 9 l 368Ql 690 l 6EVENT l 2 DATE l1 l8 l0 @l 0l 8lREPORT 0l 5l 8 l 080l@

7 8 60 68 74 75 DATE EVENT DESCRIPTION AND PROBABLE CONSECUENCES Io 121 l On June 21, 1980 at approximatelv 0730 hours0.00845 days <br />0.203 hours <br />0.00121 weeks <br />2.77765e-4 months <br /> durine a routine check bv control l Io lal l room operators it was observed that the off gas radiation monitors RM 1705-3A & B l

,o,,,l on panel C910 were reading low (5 mr versus 100 mr). An immediate investigation l

,o,5, g revealed that low sample flow existed to the Off Cas Sample Rack. The operator l ,

l 0 l6 l l adjusted the sample flow to the posted level and the readings returned to normal. l 1

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7 8 9 to 11 12 13 18 19 20

_ SEcuENTTAL CCCuRRENCE REPORT REVIStoN j LER/Ro EVENT YEAR REPORT No. CCOE TYPE No.

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41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h

, , g o ; l Problems encountered with offgas condenser apparentiv adverselv affected flow to I 3,,,,; the Off Cas Sample ' tack. Radiation levels were not reduced sufficient 1v to I generate a low level alarm. During this period post treatment and stack gas

, I y radiation levels were normal. l It tai l I 7 8 9 80

$A  % POWER oTHER STATUS ISCo E Y DISCOVERY CESCRIPT1oN l 115 l l E l@ l 1 l 0 l 0 l@l NA l W hl Routine Tn <m ee t i o n _ l ACTIVtTV CO TENT P.ELEASED oF RELEASE AMOUNT oF ACTIVITY LOCATION oF RELEASE

!7 l1 l68 9l d h l Z 10 l@l 11 NA 44 l l 46 NA 80 l

i PER$oNNEL EXPOSURES NuM8ER CESCRIPTICN l 1 l '7*l l 0 l 0 l 0 lh]TYPEhl NA l

,ERScNNELbu'!,ES NuM8ER o Ld8J 10101018l ESCRiPTio~@

9 8 9 41 12 NA 80 l

LOSS oF oR DAMAGE To FACIUTY

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