05000334/LER-1981-056-03, /03L-0:on 810601,train a Chemical Addition Tank Level Transmitter Failed Low.Cause Unknown.Channel Returned to Svc.Instrumentation Dept to Monitor Operation

/03L-0:on 810601,train a Chemical Addition Tank Level Transmitter Failed Low.Cause Unknown.Channel Returned to Svc.Instrumentation Dept to Monitor Operation

ML20009A553
Person / Time
Site:	Beaver Valley
Issue date:	07/01/1981
From:	Lacey W DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20009A546	List: 05000334/LER-1981-056, Forwards LER 81-056/03L-0 05000334/LER-1981-056-03, /03L-0:on 810601,train a Chemical Addition Tank Level Transmitter Failed Low.Cause Unknown.Channel Returned to Svc.Instrumentation Dept to Monitor Operation
References
LER-81-056-03L, LER-81-56-3L, NUDOCS 8107130305
Download: ML20009A553 (2)

LER-1981-056, /03L-0:on 810601,train a Chemical Addition Tank Level Transmitter Failed Low.Cause Unknown.Channel Returned to Svc.Instrumentation Dept to Monitor Operation

Event date:
Report date:
3341981056R03 - NRC Website

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LICENSEE EVENT REPORT e

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( 3121 l At 0400 hours0.00463 days <br />0.111 hours <br />6.613757e-4 weeks <br />1.522e-4 months <br /> on 6/1/81 with reactor power at 100%, the Train A Chemical Addition I Tank level transmitter [tT-QS-101A} failed low making this train inoperable for l

. i;,3; l 11141 I chemical addition to the Quench Spray System.

At 0420 hours0.00486 days <br />0.117 hours <br />6.944444e-4 weeks <br />1.5981e-4 months <br />. for unknown reasons.l l'

the channel returned to normal before failing low for the second time at 0651 I

3 s ITTTII hours. Power operation continued as per Technical Soecification 3.6.2.3.

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The cause is unknown. A surveillance procedure was performed on 6/1/81 to I

!l l5 ll troubleshoot the loon. No proble ns were found. At 1120 hours0.013 days <br />0.311 hours <br />0.00185 weeks <br />4.2616e-4 months <br /> on 6 /7 /RT. ebo I

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,,, ;i l channel was returned to service. The instrumentation department _,will monitor the !

i-l;} l operation of this instrument in an attempt to determine the cause for the I

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3 Attachment to LER 81-056/03L Beaver Valley Power Station Duquesne Light Company Docket No. 50-334 No further information is available or needed to satisfy the reporting requirement.

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