05000324/LER-1979-090-03, /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

/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: 05000324/LER-1979-090, Forwards LER 79-090/03L-0 05000324/LER-1979-090-03, /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
References
LER-79-090-03L-01, LER-79-90-3L-1, NUDOCS 7911300608
Download: ML19253C346 (2)

LER-1979-090, /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

Event date:
Report date:
3241979090R03 - NRC Website

text

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60 61 DOCK ET NUMBER 68 69 EVENT QATE 74 75 REPORT 0 ATE 80 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

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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 l determined that a section of piping from the suppression pool sa=ple line formed a l

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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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