ML17317A899

LER 78-022/03X-1 on 780407:during Normal Operation,Position Indication for Rods D-12 & H-8 Exceeded +/- 12 Step Limit of Tech Specs.Outputs of Amplifiers That Feed Control Board Indicators Found to Be Incorrect

ML17317A899
Person / Time
Site:	Cook
Issue date:	01/19/1979
From:	Rischling J INDIANA MICHIGAN POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17317A898	List: ML17317A897 ML17317A899 ML17317A901 ML17331A139
References
LER-78-022-03X, LER-78-22-3X, NUDOCS 7901260168
Download: ML17317A899 (4)

Text

NRC FORM 366 U. S. NUCLEAR REGULATORY COMMISSION

{7-77)

TE 0 - E IOUS EPORT DATE 5-78 CONTROL BLOCK: \ QI (PLEASE PRINT OR TYPE AI.L REQUIRED INFORMATION)

I 6

~oi 7 8 9 N I 0 C LICENSEE CODE C 2 14 Q 15 0 0 0 0 0 0 LICENSE NUMBER 0 0 0 0 0 25 Qs4 26 1 1 LICENSE TYPE 1 I 30 Q~Qs 57 CAT 68 CON'T

~o1 R'T SOURCE ~LQB 0 5 '0 '0 0 3 1 6 Q7 0 4 0 7 7 8 QB 0 I I 9 7 9 Q 68 69 EVENT DATE 74 75 REPORT DATE 80 7 8 60 61 DOCKET NUMBER EVENT DESCRIPTION AND PROBABLE CONSEQUENCES QIO DURING NORMAL OPERATION ROD POSITION INDICATION RP I FOR RODS D 12 AND H 8

~03 EXCEEDED THE + 12 STEP LIMIT OF T.S. 3.1.3.2. ON ELEVEN OTHER OCCASSIONS D-12 RPI WAS FOUND TO BE. IN. EXCESS OF THE T.S. LIMIT. IN ALL CASES THE ACTION RE UIRE-

~OB MENTS WERE FULFILLED. PREVIOUS OCCURRENCES OF A SIMILAR NATURE INCLUDE:

~O6 RO-050/0315:-'78=07,04772'-;34.;33-;-'28;27.;76-54,44 13; RO-050 0316-78-08 07.

~OB 80 7 8 SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

~OS ~I.E Q>> E Q>s ~EQs I N S T R 0 04 ~IQis ~ZQs 7 8 9 10 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION 21 22 23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN ATI'ACHMENT NPRDQ PRIME COMP. COMPONENT TAKEN ACTION ON PLANT METHOD HOURS Q22 SUBMITTED FORM SUB. SUPPLIER MANUFACTURER 33 QIB LuQ>>

34

~Q" 35 L~JQ 36 37 40 MY Q>>

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44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 THE SECONDARY VOLTAGE FOR D-12 AND H-8 WAS MEASURED AND FOUND TO BE CORRECT FOR THE INDICATED POSITION ~ THE OUTPUTS OF THE AMPLIFIERS THAT FEED THE CONTROL BOARD INDICATORS WAS FOUND TO BE INCORRECT. THE AMPLIFIERS WERE CALIBRATED AND PROPER INDICATION WAS RESTORED. THE OTHER NUMEROUS EVENTS OCCURRING TO D-12 WAS THE 3

RESULT OF HAVING A RECORDER CONNECTED TO THE ( SEE ATTACHED SUPPLEMENT) 4 80 7

s 8 9 FACILITY STATUS E Qs ~03

% POWER 0Qss OTHERSTATUS ~ METHOD OF DISCOVERY

~AQ31 OPERATOR OBS DISCOVERY DESCRIPTION Q32 7 8 9 10 12 13 44 45 46 80 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY Q LOCATION OF RELEASE Q Q33 Z Q34 NA 80

,7 8 9 10 PERSONNEL EXPOSURES 11 44 45 TYPE DESCRIPTION Q39 7

Q7 8

~0Q37 9

NUMBER 11 12 2 Qss 13 gA 80 PERSONNEL INJURIES 0 / '2 6 C>/ 6 9. 80 7 8 9 11 12

. LOSS OF OR DAMAGE,TO FACILITY 43 TYPE DESCRIPTION Z Q4, NA 8 9 10 80 PUBLICITY NRC USE ONLY ISSUED DESCRIPTION Qs)

~2O ~N' NA 68 69.

I 80 o 7 8 9 10 0

JaCk Ri SChl in PHONE:

61 6-4 NAME OF PREPARER

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LICENSEE EVENT REPORT 878-022/03X-I SUPPLEMENT TO CAUSE DESCRIPTION OUTPUT OF THE RPI CABINET (MONITORING 0-12). THIS RECORDER WAS CONNECTED IN PREPARATION FOR THE NEGATIVE RATE TRIP ASSOCI'ATED,.WITH. THE POWER ASCENSION PROGRAM, SINCE THIS RECORDER WAS DISCONNECTED ON APRIL 19, 1978 NO FURTHER'ROBLEMS HAVE BEEN ENCOUNTERED WITH RPI FOR ROD D-12.

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