ML17266A410

LER 81-008/03L-0:on 810202,digital Data Processing Sys Dropped Off Line Resulting in Loss of Control Element Assembly Pulse Counting Backup Position Indication.Caused by software-related Problems.Investigation Continuing

ML17266A410
Person / Time
Site:	Saint Lucie
Issue date:	02/26/1981
From:	Pace P FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17209A814	List: ML17209A813 ML17266A410
References
LER-81-008-03L, LER-81-8-3L, NUDOCS 8103160758
Download: ML17266A410 (2)

Text

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8i 14 15 2I21 61 AfrOAT CATE 8 1 10 Q9 EVENT OESCRIPTION ANO >ROSAELE CONSECUENCES QIO During 100/ power o eration the DDPS corn uter droo e resulted in a loss of the CEA pulse countin backu osition indicati n.

Action was taken in accordance with T.S.1.3.3.d. The DDPS was line and backup CEA position indication restored in 30 minutes which is well within limits., This is the 22nd event for loss of DDPS and backup.

position indication for the CEA's.

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