05000334/LER-1980-117-03, /03L-0:on 801218,during Physics Testing,Delta Flux Left Low Side of Target Band When Power Decreased Rapidly.Caused by Rapid Insertion of Control Rods During Power Decrease.Rods Partially Borated Out of Core

/03L-0:on 801218,during Physics Testing,Delta Flux Left Low Side of Target Band When Power Decreased Rapidly.Caused by Rapid Insertion of Control Rods During Power Decrease.Rods Partially Borated Out of Core

ML20002D930
Person / Time
Site:	Beaver Valley
Issue date:	01/15/1981
From:	Lacey W DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20002D928	List: 05000334/LER-1980-116-03, /03L-0:on 801217,degassifier a Recovery Heat Exchanger BR-E-12A2 Steam Leak Found to Be Cracked Weld. Cause Unknown.Exchanger Isolated & Drained.Weld Grounded Out & Temporary Mod to Seal Weld Performed 05000334/LER-1980-117-03, /03L-0:on 801218,during Physics Testing,Delta Flux Left Low Side of Target Band When Power Decreased Rapidly.Caused by Rapid Insertion of Control Rods During Power Decrease.Rods Partially Borated Out of Core ML20002D927
References
LER-80-117-03L, LER-80-117-3L, NUDOCS 8101230473
Download: ML20002D930 (2)

LER-1980-117, /03L-0:on 801218,during Physics Testing,Delta Flux Left Low Side of Target Band When Power Decreased Rapidly.Caused by Rapid Insertion of Control Rods During Power Decrease.Rods Partially Borated Out of Core

Event date:
Report date:
3341980117R03 - NRC Website

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ml 100 percent to 90 percent reactor power. Durinc. the power decrease, delta flux l

ITT71I left the low side of its tartet band at 0249 hours0.00288 days <br />0.0692 hours <br />4.117063e-4 weeks <br />9.47445e-5 months <br />.

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