05000318/LER-1980-007-03, /03L-0:on 800130,while Performing Routine Surveillance Testing,Discovered Control Element Assembly 54 Would Not Drive Down Electrically.Cause Not Known.Rod Became Operable During Investigation of Rod Circuitry

/03L-0:on 800130,while Performing Routine Surveillance Testing,Discovered Control Element Assembly 54 Would Not Drive Down Electrically.Cause Not Known.Rod Became Operable During Investigation of Rod Circuitry

ML19290E232
Person / Time
Site:	Calvert Cliffs
Issue date:	02/29/1980
From:	Bauer E, Lagiewski J BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19290E230	List: 05000318/LER-1980-007, Forwards LER 80-007/03L-0 05000318/LER-1980-007-03, /03L-0:on 800130,while Performing Routine Surveillance Testing,Discovered Control Element Assembly 54 Would Not Drive Down Electrically.Cause Not Known.Rod Became Operable During Investigation of Rod Circuitry
References
LER-80-007-03L, LER-80-7-3L, NUDOCS 8003050512
Download: ML19290E232 (2)

LER-1980-007, /03L-0:on 800130,while Performing Routine Surveillance Testing,Discovered Control Element Assembly 54 Would Not Drive Down Electrically.Cause Not Known.Rod Became Operable During Investigation of Rod Circuitry

Event date:
Report date:
3181980007R03 - NRC Website

text

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LICENSEE EVENT REPORT control block: l l

l l

l l

lh (PLEASE PRINT oR TYPE ALL REQUIRED INFoRMATioN) 1 6

l ti l D l C l C l tl l 2 l@l 0 l 0 l - 01010l010l-l010l@l4l1l1l1l1l@l l

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8 9 LICENSEE CODE 14 15 LICENSE NUMBER 26 26 LICENSE TYPE JO Si CAI $8 con'T 3g,3 l L l@l 0 l 5 l 0 l 0 l 01311 18 l@l 011 1310 l 810 l@l 01212 l 9 l 8 0l@

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60 61 COCKET NUMBER 68 69 EVENT OATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PRoSABLE CONSEQUENCES h At 0705 while perfominq routine surveillance testino, it was discovered i

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1 that Control Element Assembly 54 (CEA 54) would not drive down l

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Lo L4 J l electrically.

CEA-54 was full out and level with its aroup.

CEA-54 I

was declared inoperable per T.S. 3.1.3.1.

All other CEA's remained l

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looerable and CEA-54 was returned to service at 0825 on 1/30/80. LER 78-46 1

0 s

l(U-2) describes a similar event.

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7 0

8 l

80 7

8 9 CE CO E S SC E COMPONENT CODE SU8 CODE SU E

l R l8 'l@ IX l@ Lzj@ I z zl zi zi zi zi@ i x i@ l zi@

o 9

7 8

9 to 11 12 13 18 19 20 SEQUE NTI AL OCCURRENCE REPORT REVISION LER/RO EVENT YE AR REPORT NO.

CODE TYPE N O.

@ atg l218 10 l l-l l'0i 0l 71 1/1 10131 lLl l-l 0l u

22 23 24 26 27 28 29 30 31 32 TK N C ON ON PLANT MET HOURS SB 4 D

P R 8.

SUPPLIER MANUFAC RER lz l@l Xl@

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l 01 0l 0l 01 lYl@

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33 34 JS 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h lit is not known at this time why CEA-54 would not drive down electrically.

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o IDuring the investication of the rod control circuitry, the rod became I

i i

i 2 l ocerabl e.

A current trace was taken and the data showed no electrical iea ioroblems.

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A ST S

% POWER OTHE R STATUS dis O RY DISCOVERY DESCRIPTION [2J@ l ll 0l 0l@l flA l

B l@l Ooerator Observation l

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80 A TIVITY CO TENT AMOUNT OF ACTIVITY LOCATION OF RELEASE RELE ASED@OF RELE ASEl zl@l NA l

l NA l

lzl 1

6 PERSONNEL EXPCS ES NUM8ER TYPE CESCRIPTION 1 T110 010l@lzl@l NA l

PERSONNEL NJURIES NUM8ER

DESCRIPTION

l0l0l0l@l NA i

a 7

8 9 11 12 go TYPE OtSCR PT ON [2j@l NA 9

7 8 9 10 30 e

ISSUED D E SCRIP TION R INi@l NA, I

11llIlliIlIIl{

7 8 9 to 68 69 80 ;

. Laciewski/E. R. Baur.r psoys. (301)259-4747/4;9R 2

NAME oF PREPARER 8003050$ Q

sa LER NO.

80-07/3L DOCKET t10.

50-318 EVENT DATE 01/30/80 REPORT DATE 02/29/80 ATTACHf1EllT CAUSE DESCRIPTION AND CORRECTIVE AC'.'I0tlS:

(CONTIriUED)

It is planned that during the next STP 0-29 a technician will be available to monitor operating parameters on all CEA's in order to look for.an intermittent problem on a real-time basis and take

corrective action

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6 6