05000293/LER-1980-060-03, /03L-0:on 800825,while Performing HPCI Sys Performance Test,Hpci Sys Declared Inoperable Due to Oscillating Steam Throttle Valve.Caused by Dirt Filtering Through Sys.Sys Recalibr

/03L-0:on 800825,while Performing HPCI Sys Performance Test,Hpci Sys Declared Inoperable Due to Oscillating Steam Throttle Valve.Caused by Dirt Filtering Through Sys.Sys Recalibr

ML19337A592
Person / Time
Site:	Pilgrim
Issue date:	09/23/1980
From:	Mcloughlin M BOSTON EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19337A565	List: 05000293/LER-1980-060, Forwards LER 80-060/03L-0 05000293/LER-1980-060-03, /03L-0:on 800825,while Performing HPCI Sys Performance Test,Hpci Sys Declared Inoperable Due to Oscillating Steam Throttle Valve.Caused by Dirt Filtering Through Sys.Sys Recalibr
References
LER-80-060-03L, LER-80-60-3L, NUDOCS 8009290313
Download: ML19337A592 (1)

LER-1980-060, /03L-0:on 800825,while Performing HPCI Sys Performance Test,Hpci Sys Declared Inoperable Due to Oscillating Steam Throttle Valve.Caused by Dirt Filtering Through Sys.Sys Recalibr

Event date:
Report date:
2931980060R03 - NRC Website

text

NRC FOIM 364 U. S. NUCLEAR '4EGULATORY COMMISSION

(7 77)

LICENSEE EVENT REPORT l

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60 61 COCKET NUMSER 68 69 EVENT DATE 74 7S REPonT QATE do EVENT DESCRIPTION AND PROSA8LE CONSEQUENCES h

1012 l l On August 25, 1980 at approximately 0600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-4 months <br /> while conducting HPCI system oer-I 1o i3 i I formance test 8.I.6, the HPCI system was declared fnoperable. The HPCI system l

l o 14 l l steam throttle valve was oscillating. The HPCI control system was recalibrated, I

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o ;3l l the system satisfactorily tested and returned to service at approximatuly 1945 l

ia ja ; l hours the same day.

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CAUSE DESCRIPTION AND CORRECTIVE ACTIONS li;o ; j Subsequent calibration of the control instrumentation indicated no anomaly. Tests l

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,,,,,y believed that dirt which eventually filtered through the system caused a temporary l

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