05000364/LER-1981-009-03, /03L-0:on 810428 & 0501,pressurizer Pressure Indicator PI456 Declared Inoperable.Caused by Out of Spec Indicator Reading Which Occurred During Channel Check. Transmitter Replaced & Channel Returned to Svc

/03L-0:on 810428 & 0501,pressurizer Pressure Indicator PI456 Declared Inoperable.Caused by Out of Spec Indicator Reading Which Occurred During Channel Check. Transmitter Replaced & Channel Returned to Svc

ML19352A877
Person / Time
Site:	Farley
Issue date:	05/26/1981
From:	Hairston W ALABAMA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19352A876	List: 05000364/LER-1981-009-03, /03L-0:on 810428 & 0501,pressurizer Pressure Indicator PI456 Declared Inoperable.Caused by Out of Spec Indicator Reading Which Occurred During Channel Check. Transmitter Replaced & Channel Returned to Svc 05000364/LER-1981-010-03, /03L-0:on 810429 & 30,containment Atmosphere Radioactivity Monitoring Sys R-11 Declared Inoperable.Caused by Filter Paper Not Advancing Due to Paper Spool Slippage on Shaft.Drive Shaft Adjusted & R-11 Returned to Svc 05000364/LER-1981-011-03, /03L-0:on 810426 & 27,power Operated Relief Valve 445A Declared Inoperable.Caused by Seat Leakage.Valve Stroke Adjusted.Leakage Reoccurred & Valve Isolated.Repair Will Be Accomplished When Plant Conditions Permit ML19352A875
References
LER-81-009-03L, LER-81-9-3L, NUDOCS 8106020267
Download: ML19352A877 (2)

LER-1981-009, /03L-0:on 810428 & 0501,pressurizer Pressure Indicator PI456 Declared Inoperable.Caused by Out of Spec Indicator Reading Which Occurred During Channel Check. Transmitter Replaced & Channel Returned to Svc

Event date:
Report date:
3641981009R03 - NRC Website

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8 60 63 COCKET NUValER 6a 63 EVENT CATE T4 73 REPoR T C ATI 12 EVENT DESCRIPTION AND PRO 9A8LE CONSEQUENCES h

! o i 2 l l At 0420 on 4/28/81 and 1655 on 5/1/81, the cressurizer pressure indicator PI436 was

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l o 12 l I declared inoperable as a result of an out of spec. indicator reading which occurred l

1 o i 41 l during a channel check. Tech. Spec. 3.3.2, in part, requires PI456 to be operable..

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lo !5) l Tech. Spec. 3.3.2 action statement requirements were met.

p io is l lpublic were not affected by this event.

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l.;2j jbistables tripped. When rawer was restored to the transmitter to check its output, the ;

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1 i e 31 l output was found to be normal.

Iii&llperformed satisfactorily at 0925 on 4/28/81. The operator was instructed to closely 83 7

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LER 81-009/03L-0

..monitor PI456 readings' for any further anomalies.

At 1655 on 5/1/81 the problen re-curred. The instrumentation loop was placed in test and the transmitter power supply card was replaced. 11 transmitter was re-energized with:the loop in test and closely monitored.for several hours. At approximately 0100 on--5/2/81, PI456 indication reading shifted high out of tolerance. Power was then removed from the transmitter, the transmitter was replaced and the channel returned to service at

- 0740 on 5/2/81.

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