ML19253C346

LER 79-090/03L-0:on 791031,containment Atmospheric Monitor Failed to Operate Properly & Low Sample Flow Was Noted. Caused by Condensate Drain Pot Solenoid Valve Failure Which Blocked Sample Flow.Solenoid Valve Was Replaced

ML19253C346
Person / Time
Site:	Brunswick
Issue date:	11/27/1979
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19253C343	List: ML19253C342 ML19253C346
References
LER-79-090-03L-01, LER-79-90-3L-1, NUDOCS 7911300608
Download: ML19253C346 (2)

Text

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DOCK ET NUMBER EVENT QATE EVENT DEStalPTION AND PRO 8ABLE CONSEQUENCES h o 2 lWhile trying to run the containment atmospheric monitor 2-CAC-A0H-1259, the operator 1 o 3 lcould net get the monitor to run for more than a few minutes at a time. Low sample l 0 4 [ flow was also noted at this time. I o s l l lo Is l 1 -

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O 8 l Technical Specifications 3.3.5.3, 6.9.1.9b I 7 8 9

• 80 SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUSCOCE COMPONENT CODE SUSCODE SUSCODE 7

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40 42 43 44 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h i O M failure of the condensate drain not solenoid valve caused condensation to back up l l i l i l linto the air sample lines blocking the sample flow. The solenoid valve was reolaced I g land the system was returned to service satisfactorily. A check was made of the other l i 3 monitors with no problem found. While this investigation was being conducted, it was l i 4 l determined that a section of piping from the suppression pool sa=ple line formed a l 7 8 9 80 ST S  % POWER OTHER STATUS 015 0 RY DISCOVERY DESCRIPTION i s lE l@ l 0 l 9 l 1l@l N/A l Al@lOperatorSurveillance ACTIVITY CO TENT .

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NAVE OF PREPARER L I hlli e - h- PH ON E: 919 - 457-9521

LER CONTINUATION - RO #2-79-90

. FACILITY: Unit #2 ,

EVENT DATE: 10-31-79

- small loop below the monitor which could fill with condensate and block sampic flow.

An Engineering Work Request was initiated to correct this problem.

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