05000317/LER-1981-053-03, /03L-0:on 810613,26 & 30,pressurizer Level Deviated from Program Level by More than 5%.Caused by Temp Swings Due to Paralleling Main Generator

/03L-0:on 810613,26 & 30,pressurizer Level Deviated from Program Level by More than 5%.Caused by Temp Swings Due to Paralleling Main Generator

ML20009E842
Person / Time
Site:	Calvert Cliffs
Issue date:	07/13/1981
From:	Junge M BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20009E837	List: 05000317/LER-1981-053, Forwards LER 81-053/03L-0 05000317/LER-1981-053-03, /03L-0:on 810613,26 & 30,pressurizer Level Deviated from Program Level by More than 5%.Caused by Temp Swings Due to Paralleling Main Generator
References
LER-81-053-03L, LER-81-53-3L, NUDOCS 8107280480
Download: ML20009E842 (1)

LER-1981-053, /03L-0:on 810613,26 & 30,pressurizer Level Deviated from Program Level by More than 5%.Caused by Temp Swings Due to Paralleling Main Generator

Event date:
Report date:
3171981053R03 - NRC Website

text

v NRC F OR*4 366 U. S. NUCLE AR REGULATORY COMMISSION (77 5 LICENSEE EVENT REPORT CONTROL BLOCK: l l

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60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h O 2 l During the past 30 days, pressurizer level has deviated from the program l

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level by more than 5% several times (T.S. 3.4.4).

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l0l4ll June 26, and 15 minutes on June 30, the pressurizer level exceeded the l

lO lsi l 5% band while paralleling the main generator. For 7 minutes on June -13 l

0 s l the 5% band was exceeded as charging and letdown were isolated to inves-l l0 l7l l tigate slightly increased RCS leakage. LER 81-40 describes a similar l

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