05000305/LER-1981-015-03, /03L-0:on 810510,steam Flow Transmitter Found Out of Calibr Resulting in Bi Steam Flow & hi-hi Steam Flow Trip Settings Less Conservative than Tech Spec.Caused by Instrument Drift.Transmitter Recalibr

/03L-0:on 810510,steam Flow Transmitter Found Out of Calibr Resulting in Bi Steam Flow & hi-hi Steam Flow Trip Settings Less Conservative than Tech Spec.Caused by Instrument Drift.Transmitter Recalibr

ML20004F016
Person / Time
Site:	Kewaunee
Issue date:	06/09/1981
From:	Jay Wallace WISCONSIN PUBLIC SERVICE CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20004F015	List: 05000305/LER-1981-015, Forwards LER 81-015/03L-0 05000305/LER-1981-015-03, /03L-0:on 810510,steam Flow Transmitter Found Out of Calibr Resulting in Bi Steam Flow & hi-hi Steam Flow Trip Settings Less Conservative than Tech Spec.Caused by Instrument Drift.Transmitter Recalibr
References
LER-81-015-03L, LER-81-15-3L, NUDOCS 8106160398
Download: ML20004F016 (1)

LER-1981-015, /03L-0:on 810510,steam Flow Transmitter Found Out of Calibr Resulting in Bi Steam Flow & hi-hi Steam Flow Trip Settings Less Conservative than Tech Spec.Caused by Instrument Drift.Transmitter Recalibr

Event date:
Report date:
3051981015R03 - NRC Website

text

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LICENSEE EVENT REPORT CONTROL BLOCK: l l

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60 61 DOCKET NUMBER 68 63 EVENT DATg 74 7S REPORT DATE 80 EVENT DEscalFTION AND PROBABLE CONSEQUENCES h

. o 12 l l Surveillance testing during refueling shutdown indicated that one steam flow trans-I l mitter was out of calibration resulting in Hi Steam Flow and Hi-Hi Steam Flow trip l

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, o ;,,, l settings less conservative than T.S. requirements, TS 3.5.a.

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o;3, l steam flow instrumentation were operable within T.S. limits and would have initiated l

3 o is ; ; steam line isolation as requir'ed. There was no effect on plant operation or public l

go;;; [ safety. Occurrences of excessive drif t have been previously reported.

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33 34 35 36 31 40 43 42 43 44 47 CAUSE DESCRIPT10N AND CORRECTIVE ACTIONS lli j o l l Instrumentation drif t of the Barton steam flow transmitter caused it to be out of I

lj i ii l l calibration condition.

The transmitter was recalibrated and returned to service.

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l The onsite review group is continuing to review the performance of transmitters l

j,;3; l with specifications in Technical Specifications. An update report will be issued l

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(414) 433-1329 J.

J. Wallace PHONE:

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