ML19254E299

LER 79-083/03L-0:on 790926,during Mode 2 Operation,Rod 46 Dropped Four Times to Lower Electrical Limit.Cause Not Stated.Voltage to Cedm Gripper Coils Was Increased & Rod Exercised Successfully.Control Element Assembly Realigned

ML19254E299
Person / Time
Site:	Arkansas Nuclear
Issue date:	10/25/1979
From:	Pendergraft R ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19254E288	List: ML19254E287 ML19254E296 ML19254E299 ML19254E301 ML19254E305
References
LER-79-083-03L, LER-79-83-3L, NUDOCS 7910310428
Download: ML19254E299 (1)

Text

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LICENSEE EVENT REPORT EXHIBIT A CONTROL eLoco l l l l l l (PLE ASE PRINT OR TYPE ALL l'FOUIRED INFORMATIONI 1

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! 510 0 0 1316 18l@l0 Docet t y s.yugg m u 69 1912 1617 19)@l110121517 E v t'.T D AT E to ' .s REPORT DATE 191@8t 3 EVENT DESCRIPTION AND PROB A8LE CONSECUENCES toi2l lDuring mode 2 operation, Rod #4 dropped 4 times to the lower electrical ,

o 3 i limit. With CEA #46 misaligned by more than 19 inches from the group i o , iaverage position, operation in mode 2 continued per T.S. Action Statement i o U13.1.3.1(c). There have been no similar occurrences. j o s IPonortable opr T.S. 6.9.1.9 b. I c > l _

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i a IInvestication did not reveal cause for rod drops. The voltage to the I lii iiCEDM gripper coils was increased and the rod was exercised successfully. ,

i,i,ii The CEA was realigned within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> per Action Statement 3.1.3.1(c). ,

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