05000324/LER-1981-084-03, /03L-0:on 810909,discrepancy Noted in Suppression Chamber Water Level Recorders.Caused by Change in Trickle Flow to Wet Ref Leg of Recorder Transmitter 2-CAC-LT-2602. Flow re-established & Transmitter Calibr

/03L-0:on 810909,discrepancy Noted in Suppression Chamber Water Level Recorders.Caused by Change in Trickle Flow to Wet Ref Leg of Recorder Transmitter 2-CAC-LT-2602. Flow re-established & Transmitter Calibr

ML20011A411
Person / Time
Site:	Brunswick
Issue date:	09/29/1981
From:	Pastva M CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20011A409	List: 05000324/LER-1981-084, Forwards LER 81-084/03L-0 05000324/LER-1981-084-03, /03L-0:on 810909,discrepancy Noted in Suppression Chamber Water Level Recorders.Caused by Change in Trickle Flow to Wet Ref Leg of Recorder Transmitter 2-CAC-LT-2602. Flow re-established & Transmitter Calibr
References
LER-81-084-03L, LER-81-84-3L, NUDOCS 8110130321
Download: ML20011A411 (2)

LER-1981-084, /03L-0:on 810909,discrepancy Noted in Suppression Chamber Water Level Recorders.Caused by Change in Trickle Flow to Wet Ref Leg of Recorder Transmitter 2-CAC-LT-2602. Flow re-established & Transmitter Calibr

Event date:
Report date:
3241981084R03 - NRC Website

text

NNc FORM 366 U. S. NUCLEAR REGULATO3Y COMMISSION (7 77)f LICENSEE EVENT REPORT p

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EVENT OESCRIPTION AND PROBABLE CONSEQUENCFS Oio lDuring routine surveillance, it was discovered that suppression chamber water level l

l o 12 l l recorder, 2-CAC-LR-2602, was indicating a level of -26" while the other suppression o 3 l chamber water level indicator, 2-CAC-LI-2601-3, indicated a level of -27.5".

This j

o 4 g jevent did not affect the hecith and safety of the public.

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' lt lallA change in trickle tiow to the wet reference leg of the recorder transmitter. 2-CAC-l l1 11 J lLT-2602, Model No. BQ15221, caused the transmitter to be out of crtJ' bration. The

_,,j ITTT'l Itrickle flow was properly established, the transmitter was calibrated and the records rl lwas returnvl >o service. Plant Modification 80-78 has been developed to eliminate i

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ISSUED

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PDR ADOCK 05000324 68..

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S PDR M. J. Pastva, Jr.

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l LER ATTACHMENT - RO #2-81-84

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~g.,y..q, Facilitr: BSEP Unit No. 2 Event Date: 9/9/81 As a result of an event involving this instrument on Unit No.1, reported in LER 1-8107 and a post-TMI requirement, a plant modification package (80-79 for Unit No. I and 80-78 for Unit No. 2) has been developed. This modification will install a condensing pot in the reference leg in order to increase the accuracy and reliability of this instrument, and removs the requirement to have flow in the reference leg to ensure that it is full.

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