ML17317A884

LER 78-038/03X-1 on 780623:while in Mode 2,position of Rods C-3,C-13,N-13,H-6,F-8 & K-8 Indicated Deviation of Greater than 12 Steps from Demand Position.Caused by Signal Conditioning Modules

ML17317A884
Person / Time
Site:	Cook
Issue date:	01/16/1979
From:	Beilman T INDIANA MICHIGAN POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17317A880	List: ML17317A879 ML17317A881 ML17317A884 ML17317A886 ML17317A887 ML17317A888
References
LER-78-038-03X, LER-78-38-3X, NUDOCS 7901220123
Download: ML17317A884 (2)

Text

NRC FORM 366 U. S. NUCLEAR REGULATORY COMMISSION (7 77)

LlCENSEE EVENT REPORT

'ONTROI. BLOCK: Q1 (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

I 6

~01 7 8 9 M I D LICENSEE CODE C C 1Qg 14 15 0 0 0 0 0 0 LICENSE NUMBER 0 0 0 0 0 ps 25 26 4 I I I LICENSE TYPE I

30 ps~ps 57 CAT 58

~0 7

CON'T 8

SOURCE I

60 LI~

61 0 5 0 0 0 DOCKET NUMBER 3 1 5Q 68 69 EVENT DATE 74 QOII6 R 80 Q

EVENT DESCRIPTION AND PROBABLE CONSEQUENCES ~10 WHILE IN MODE 2 THE INDICATED POSITISf OF RODS C-3, C-13, N-13, H-6, F-8 AND, K-8 INDICATED A DEVIATION OF GREATER THAN TWELVE STEPS FROM DEMAND POSITION.

~03 THIS IS IN EXCESS OF THE LIMIT IDENTIFIED BY T.S. 3.1.3.2 SIMILAR OCCURRENCES PREVIOUSLY SUBMITTED ARE: 0315/76-13, 44 AND 54; 0315/77-27,28,33, AND 34; 0315/78-04,07 AND 0316/78-07,08,22,31 AN 41.

~OB 80 7 8 SYSTEM fODFE 'ODE CAUSE CAUSE SUBCODE COMPONENT CODE COMP.

SUBCODE VALVE SUBCODE Q>> ~EQ>> ~2Q>> I N S T R 0 0>4 ~10ls ~2 Q>>

7 8 9 10 11 12 13 18 19 20

~B SEQUENTIAL OCCURRENCE REPORT REVISION Q "" "'~~

EVENT YEAR REPORT NO, CODE TYPE NO.

LERIRO 21 22 Q

23 24 26 Q>

27

~03 28 29 QN 30 Q

31 32 1

NPRDQ PRIME COMP. COMPONENT

'3 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT TAKEN ACTION ON PLANT METHOD HOURS Q22 SUBMITTED FORM SUB. SUPPLIER MANUFACTURER

~Eppes 33

~ZQAg 34

~20gp 35

~2 36 31 0 0 0 0 40

~NQgg 41

~N024 42

~NQgs 44 W 1 2 0 47 Qzs CAUSE DESCRIPTION AND CORRECTIVE ACTIONS ~27 THE CAUSE WAS TRACED TO THE SIGNALMONDITIONING MODULES WHICH WERE RESPANNED ND SATISFACTORILY RETURNED TO SERVICE AFTER SECONDARY VOLTAGE WAS VERIFIED TO BE CORRECT PER POSITION DEMAND.

THE EXTERNAL CAUSE OF INDICATOR DRIFT HAS NOT BEEN DETERMINED ALTHOUGH AN 3

ENGINEERING REVIEW IS IN PROGRESS.

7 8 9 80 FACILITY METHOD OF 7 8 STATUS

~Ps 9

C ~pgg 10 0

CONTENT SE POWER 0 4 12 13 OTHER STATUS NA s44 DISCOVERY

~APgi 45 46 OPERATOR OBSERVATION DISCOVERY DESCRIPTION 80 ACTIVITY RELEASED OF RELEASE AMOUNT OF ACTIVITYQ- LOCATION OF RELEASE Q36 NA NA

[116] Z Q33 ~ZQ34 44 45 80 7 8 9 10 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q39

~!7 ~00 0 Qgv ~203g NA

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8 12 13 80 7 9 11 PERSONNEL INJURIES 7 8 9 11 12 80 LOSS OF OR DAMAGE,TO FACILITY 43 TYPE DESCRIPTION g Z Psg NA 8 9 10 80 7

PUBLICITY NRC USE ONLY ISSUED DESCRIPTION Q~ o LHJQ44 NA 8 9 10 88 69 BO o T. P. Beilman 616-465-5901 0 NAME OF PREPARER PHONE