05000324/LER-1980-121-03, /03L-0:on 801229,reactor Level Instrument 2-B21-LI-R604A Found Not Tracking Properly to Decreasing Reactor Level.Caused by Instrument Level Transmitter 2-B21-LT-N026A Drift Out of Calibr.Transmitter Recalibr: Difference between revisions

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{{Adams
#REDIRECT [[05000324/LER-1980-121-03, /03L-1:on 801229,following Reactor Scram,Reactor Level Instrument 2-B21-LI-R604A Did Not Track Properly to Decreasing Reactor Level.Caused by Instrument Level Transmitter 2-B21-LT-N026A Out of Calibr]]
| number = ML19341B506
| issue date = 01/27/1981
| title = /03L-0:on 801229,reactor Level Instrument 2-B21-LI-R604A Found Not Tracking Properly to Decreasing Reactor Level.Caused by Instrument Level Transmitter 2-B21-LT-N026A Drift Out of Calibr.Transmitter Recalibr
| author name = Pastva M
| author affiliation = CAROLINA POWER & LIGHT CO.
| addressee name =
| addressee affiliation = NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
| docket = 05000324
| license number =
| contact person =
| document report number = LER-80-121-03L, LER-80-121-3L, NUDOCS 8102020398
| package number = ML19341B505
| document type = LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT
| page count = 1
}}
{{LER
| Title = /03L-0:on 801229,reactor Level Instrument 2-B21-LI-R604A Found Not Tracking Properly to Decreasing Reactor Level.Caused by Instrument Level Transmitter 2-B21-LT-N026A Drift Out of Calibr.Transmitter Recalibr
| Plant =
| Reporting criterion =
| Power level =
| Mode =
| Docket = 05000324
| LER year = 1980
| LER number = 121
| LER revision = 3
| Event date =
| Report date =
| ENS =
| abstract =
}}
 
=text=
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tsQ 61 DQLit ET r.gveEM 6J GJ EVENT DATE 14 7'J REPORT DAT E BJ EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h joj2l l Following a reactor scram, reactor icvel instrument. 2-B21-T.I-R604A, did not track l
I o l a J l properly to decreasing reactor level. All other level indications responded properly l
;oj ;lto changes in reactor level. This event did nct affect the health or safety of the 1
i InisJlpublic.
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==CAUSE==
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40 41 42 43 44 47 CAUSE DESCRIPTION ANO COAnECTIVE ACTIONS h l i j u l l The gain setting on the instrument level transmitter, 2-B21-LT-NO26A, drifted out of l
4 i,ji;; calibration. The transmitter was then recalibrated and returned to noTnal operation. ]
A check of the other similar icvel transmitters on both units did not reveal any l
,,,., j j l problem',.
These type transmitters will be replaced with more reliable instrumentation l
;,,,i;during a future outage.
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{{LER-Nav}}

Latest revision as of 18:38, 25 May 2025