ML17266A043

LER 79-004/03L-0 on 790205:discovered Two Misalignments in Control Element Assembly.Caused by Faulty Upper Electric Limit Reed Switches.Faulty Switches to Be Replaced During Next Refueling Outage

ML17266A043
Person / Time
Site:	Saint Lucie
Issue date:	03/05/1979
From:	Schoppman M FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17206A699	List: ML17206A698 ML17266A043
References
LER-79-004-03L, LER-79-4-3L, NUDOCS 7903200377
Download: ML17266A043 (2)

Text

NRC FORNNNI 388 U. S. NUCLEAR REGULATORY COhlMISSION (7 77)

LICENSEE EVCIVT REPORT I I I iOi [PLPASE PAINT OR TYPE ALL REOUIREO INFORhIATIONI

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EVEE4T OESCRIPTION ANO PROSABLE CONVSEOUENCES Qlo

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~a~ inserted for test ur oses but then could not be manuall withdrawn. This

~o led to a reater than 7.5 inch misali nment with other CEA s in its rou .

~os ACTION was taken in accordance with T,S. 3.1.3.ld, and CEA 57 was aligned n A

~O eri ced se en e f events. Both misali nments were due

~o 8 to the same cause as described below.

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SUPPLIER 'IANUFACTUAPR COMPO NK. IT L~JQLJQ LJIQ LTJQ 25 28 OOOOI 0 27 El LJNQ 41 LKQ 42 LJNQ 42 44 I 4 9 0 47 CAUSE OESCRIPTION ANO CORRECTIVE ACTIONS Q27 o The CEA misali nments were caus d b fa lt i d switches. Both CEA's have redundant reed switches hat function as the fault swit thus enablin the redundant switch s to contro tw rd The fault switches will be re laced durin the next refuelina outa e.

7 8 9 5

FACILI Y STATUS E GE ~l0 R POYIER 0 QEE QTHER STATUS NA

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~AQI 0 DISCOVERY OESCAIPTION Q42 erator Observation BO 7 8 9 10 I'2 4S 48 ACTIVITY CQ'ITENT 30 AELEASFO OF AELKASE AVOVN7OF ACTIVITYQ3S LOCATION OF RELEASE Q38 EKi MO33 MOll 10 44 45 PEASOIINEL EXPOSURES TYPP EDQ3 Lala~OOE'ilOS II I'2 A

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