ML17331A180

Updated LER 79-041/03L-1:on 791101,hydrogen Recombiner 1 Failed to Increase Temp to 1,200 F within 5-h.Caused by Incorrect Electrical Connection of One Heater Element.Wiring Corrected & Controller Gain & Bias Adjusted

ML17331A180
Person / Time
Site:	Cook
Issue date:	06/02/1980
From:	Wizner D INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17331A177	List: ML17331A176 ML17331A179 ML17331A180
References
LER-79-041-03L, LER-79-41-3L, NUDOCS 8006050315
Download: ML17331A180 (2)

Text

NRC FORM 366

{7-77) UPDATE REPORT PREVIOUS REPORT DATE 11/03/79 LICENSEE EVENT REPORT P

'ONTROL BLOCK: Qi (PLEASE PRINT OR TYPE ALI. REQUIRED INFORMATION)

~

I 6 7 8 9 M I 'oi D C SEE CODE C 2 14 Qg 15 0 0 0 0 0 0 LICENSE NUMBER 0 0 0 25 Q34 26 I I I I LICENSE TYPE 30 Q4~OE 57 CAT 58 LIC EN CON'T

~oi RE~DRT SOURCE

~LiP 0 5 0 0 0 3 1 6 68 Qj 69 1 1 0 EVENT DATE 1 7 9 74 QB 75 0 6 0 REPORT DATE 2 8 0 09 80 7 8 60 61 DOCKET NUMBER EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10 DURING SURVEILLANCE TESTING HYDROGEN RECOMBINER NO. 1 FAILED TO INCREASE

~03 TEMPERATURE TO >1200 F-WITHIN 5 HOURS AS REQUIRED BY T.S. 4.6.4.2B3. SIX HOURS WERE REQUIRED TO REACH THAT TEMPERATURE. ONCE THE TEMPERATURE WAS REACHED'T WAS MAINTAINED AS REQUIRED. THE NO. 2 RECOMBINER TESTED

~06 SATISFACTORILY. THIS IS THE FIRST OCCURRENCE OF THIS TYPE. PUBLIC HEALTH AND SAFETY WERE NOTAFFECTED.

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

~SE Qll B QT2 ~B Ol3 R E C 0 M B Olg gJ 19 Qlg 20 Qlg 7 8 9 10 11 12 13 18 SEOUENTIAL OCCURRENCE REPORT R EV I 5 ION Qll LER/RO REPoRT EVENT YEAR

~79 21 22

+23

~04 24 REPORT NO.

1 26 QH 27

~05 28 CODE 29 TYPE

+L 30 Q

31 NO.

I

'1 NPRDP PRIME COMP. COMPONENT ACTION FUTURE TAKEN ACTION EFFECT ON PLANT SHUTDOWN METHOD

' HOURS +22 Q ATTACHMENT SUBMITTED FORM SUB. SUPPLIER MANUFACTURER

~~OEg~zOEE 33 34

~zO28 35 ,

POET 36 37 40 41 0>> MO4 42 L~JO28 43 . 44 w 2 o QO" 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 027 0 CAUSE OF THE EVENT WAS INCORRECT ELECTRICAL CONNECTION OF ONE HEATER ELEMENT WHICH RESULTED IN A RESISTANCE IMBALANCE BETWEEN PHASES, THE WIRING WAS CORRECTED AND THE CONTROLLER GAIN AND BIAS WERE ADJUSTED.

THE UNIT WAS RETESTED AND TEMPERATURE EXCEEDED 1200 F IN 4 HOURS, 3

4 80 7 8 9 FACILITY STATUS

~00 Tg POWER 0

OTHER STATUS NA

~

~30 METHOD OF DISCOVERY SURVEILLANCE TEST DISCOVERY DESCRIPTION Q32 CCI8 g 9

M Qgg 10 12 Qgg 13 44

~BOET 45 46 80 ACTIVITY CONTENT RELEASED OF RELEASE

'34 AMOUNTOF ACTIVITY Q LOCATION OF RELEASE Q36 CZ 7 8 VuO33 9 10 NA 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION

~ET 8

~00 9

0 11 Q32 12 2 Q38 13 NA 80 7

PERSONNCI. INJURIES NUMBER DESCRIPTIONO41 8 ~00 0 Q40 12 NA 80 7 8 9 11 LOSS OF OR DAMAGE,TO FACILITY 43 TYPE DESCRIPTION 3 00<0503II+ JUN g

~lg"8 2 Q42 10 NA 80 9

NRC USE ONLY ISSUED P U 8 L I CITY DESCRIPTION Q KZ.~044 8 9 10 68 69, 80 Eg DAVID G. WIZNER 616-465-5901,EXT.1398 NAME OF PREPARER PHONE:

'