ML18347A852

License Event Report 1980-020-00 Re Misaligned Control Rod

ML18347A852
Person / Time
Site:	Palisades
Issue date:	07/29/1980
From:	Hoffman D Consumers Power Co
To:	James Keppler NRC/RGN-III
References
LER 1980-020-00
Download: ML18347A852 (2)

Text

consumers Power company General Offices: 212 West Michigan Avenue, Jackson, Michigan 49201 "(517) 788-0650 July 29, 1980 Mr James G Keppler Office of Inspection and Enforcement Region III U S Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKET 50-255 - LICENSE DPR PALISADES PLAUT - LICENSEE EVENT RE?ORT 80-020 - MISALIGNED CONTROL ROD On the reverse side is Licensee Event Report 80-020 which is reportable under Technical Specification 6.9.2.B.2; however, 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> notification was made under Technical Specification S-5.1.

David P Hoffman Nuclear Licensing Adrr1inistrator CC Director, Office of Nuclear Reactor Regulation Director, Office of Inspection and Enforcement NRC Resident Inspector - Palisades rz_ \ \9'00' j\Jl v

PALISADES PLANT NRC FORM366 U.S. NUCLEAR REGULATORY COMMISSION 17*771 LICENSEE EVENT REPORT CONTROL BLOCK: I I(!) IPLEASE PRINT OR TYPE ALL REQUIRED INFORMATIONI

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8 60 61 DOCKET NUMBER 68 69 EVENT DATE 7* 75 REPORT DATE 110 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES (,O'l

((I!J I Following control rod manipula'!&ions during normal power operation, f.IID I CRDM No 39 drove in approx 39 inches. As a result. the rad was

[]'JI] I misaligned :from the remaining rods in its group for about 5 minutes . J

[))]J I Immedia:te action consisted o:f halting rod inward motion, manual exer~isinEJ

[TI:[] I o~ the CRDM "down" contractors, and pulling* rod to its required position.

Reportable per TS S-5.l and 3.J.0.4c. Similar event occurred on July 24.

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[fil] 1 1980, but did not result in, lllisaligned rod *.. I

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SYSTEM CAUSE CAUSE COMI'. VALVi.

COQ.{ CODE SUBCOOE COMPONEr.rf COOE SUBCODE SUBCODE

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7 8 9 10 11 12 13 18 111 20 REVISION

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REl'ORT NO.

OCCURflEHCE CODE REl'ORT TYPE NO.

\::.I REPORT NUMBER I8 I 0I I I lo 12 I o I f/I IaI 1 I rLJ 1=.J IQJ 21 22 23 2* 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN . ~ ATTACHMENT NPRD-4 PRIME COMP. COMP'ONENT TAKEN ACTION ON PLANT METHOD HOURS @ SUBMITTED FORMliUB. SUPPLIER MANUFACT\,IRER LI@l!J@ ~@ l.!J@ I o I oI C4 ocoI Ll!.J@ W@) IILJ@ tc 14 t 9 lo i@

3J 3" 35 36 37 41 *2 G ... 47 CAUSE DESCRIPTION AND CORREC"flVE ACTIONS @

£.Im I CRDM control re1ay armatures and up/do-wn. contractor' interlock *were dirl..L.-J 1JJJJ I causing them to stick. Contactors and interlock for CRDM 39 have been _J cleaned and lubricated. Cleaning and lubrication of remaining contactors CTIIJ IL----~------------------~--_:;__________~----------------~~~---'

is in progress. A PM to perform this :function on a refueling cycle is J

£I1!] I being developed.

, 8 9 IO FACILl'TY '3Q\ M~OO~ t;:;\

STATUS 1' l'OWER OTHER STATUS ~ DISCOVERY DISCOVERY DESCRIPTION ~

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• M RELEASED DF RELEASE AM.:lUNT OF ACTIVITY ~ LOCATION OF RELEASE EE]

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LOSS oc:*oR DAMAGE TO FACILITY ~

TYPE DESCRIPTION Ii:::/

[2lij l.!.J@ . . N A 7 8 9 10 PUBLICITY C\ NRC USE ONLY

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