ML19345A893

LER 80-090/03L-0:on 801026,during Control Rod Operability Check P.T.14.1,rod 34-23 Would Not Select.During Routine Surveillance Checks,Rod 18-23 Would Not Select.Caused by Failure of Rod Select Switches.Switches Replaced

ML19345A893
Person / Time
Site:	Brunswick
Issue date:	11/19/1980
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19345A891	List: ML19345A890 ML19345A893
References
LER-80-090-03L, LER-80-90-3L, NUDOCS 8011250379
Download: ML19345A893 (1)

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U. S. NUCLE AR REGULATORY COMMISSION

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NRCTORM M (7 77)

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LICENSEE EVENT REPORT

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F 8 60 61 OOCKET NUMBER EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h P.T.14.1, it was discoveredj ITTT1 l During the performance of Control Rod Operability L c.c.

Later while performing routine surveillance checks, j l O 13 ; I that rod 34-23 would not select.

In each case the health and safety of the public was  !

i o i 4 l l rod 18-23 would not select.

I lCisll not affected.

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10171l Technical Specifications 3.1.3.1, 6.9.1.9b 80 l

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JD J6 3d 40 di 42 43 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h I

lt1O1IBoth rods would not select because of a failure of their rod select switches.

f A 1 g,;,jlThese select switches were replaced and the 2 rods were successfully selected.

An Enoineerine l

['TT 1 I check of the other rod select switches did not detece w - +1c-e.

l I ,13 l l Work Request has been written to study the feasibility of replacine these switches I

! I'iT~i'l I with a different type in order to extend their oOerational lifetime. 80 7 8 9 ISCO Y OISCO'. EHv OESCRIPTtON A S *, POWER OTHER Status Periodic testing l li Is l l El@ l 0 l 9 l 8 l@l NA l l Bl@l ACTIVITY CON T E NT I LOC AT O*. OF RE LE ASE RELE ASED OF RELE ASE AYOLNT OF ACTnt rN NA l NAl l li 161 1 a 9 Lz_] @ l z l@l3: to 44 45 80 PEHsONNEL TxPOSU6tES NU9ttE n TvPE CESCHtPTION -

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