05000324/LER-1981-054-03, /03L-0:on 810611,while Performing Surveillance During Reactor Startup,Drywell Floor Drain Sump Flow Integrator Was Indicating Sump Flow W/No Pumps Running. Caused by Instrument Drift.Square Root Converter Recalibr

/03L-0:on 810611,while Performing Surveillance During Reactor Startup,Drywell Floor Drain Sump Flow Integrator Was Indicating Sump Flow W/No Pumps Running. Caused by Instrument Drift.Square Root Converter Recalibr

ML20005A313
Person / Time
Site:	Brunswick
Issue date:	06/25/1981
From:	Pastva M CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20005A310	List: 05000324/LER-1981-054, Forwards LER 81-054/03L-0 05000324/LER-1981-054-03, /03L-0:on 810611,while Performing Surveillance During Reactor Startup,Drywell Floor Drain Sump Flow Integrator Was Indicating Sump Flow W/No Pumps Running. Caused by Instrument Drift.Square Root Converter Recalibr
References
LER-81-054-03L, LER-81-54-3L, NUDOCS 8106300181
Download: ML20005A313 (1)

LER-1981-054, /03L-0:on 810611,while Performing Surveillance During Reactor Startup,Drywell Floor Drain Sump Flow Integrator Was Indicating Sump Flow W/No Pumps Running. Caused by Instrument Drift.Square Root Converter Recalibr

Event date:
Report date:
3241981054R03 - NRC Website

text

F UH M 366 U.S. NUCLEAR HEGULATORY COMMISSION

.t7 771 LICENSEE EVENT REPORT

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' DCCKET NUMBER 68 69 EVENT DATE le 75 6EPORT OATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h I'5T l luhile performing routine surveillance during a reactor startuo. It was observed that I

@ lthe Drywell Floor Drain (DWFD) sump flow integrator was indicating DVFD sump flow I

Q lwith no pumps running. The DWFD sump flow integrator was then declared inonerable l

l0lsl l in accordance with technical specifications. This event did not affect the health l

ITTW'l land safety of the public.

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'o 31 40 43 42 4J 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIO.*JS h lT"ITl lThe flew integrator Rouare root converter. model No. 565, was out of calibration due l

i i ito instrument drift.

It was calibrated and the DWFD sumo flow integrator vu re-I g l turned to service. A review of past LER's has indicated that thiR is an isolated I

i 3 l cvent; the.efore, no further action is required.

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