05000416/LER-1982-078-03, /03L-0:on 821005,battery Surveillance Procedure 06-E1-1111-W-0001 Revealed Voltage on Div 1 Dc Supply to Be 121.7-volts Dc Resulting in Reduction in Electrical Reserves.Caused by Errors in Maint Instruction 07-S-12-45

/03L-0:on 821005,battery Surveillance Procedure 06-E1-1111-W-0001 Revealed Voltage on Div 1 Dc Supply to Be 121.7-volts Dc Resulting in Reduction in Electrical Reserves.Caused by Errors in Maint Instruction 07-S-12-45

ML20027D284
Person / Time
Site:	Grand Gulf
Issue date:	10/28/1982
From:	White A MISSISSIPPI POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20027D281	List: 05000416/LER-1982-078, Forwards LER 82-078/03L-0 05000416/LER-1982-078-03, /03L-0:on 821005,battery Surveillance Procedure 06-E1-1111-W-0001 Revealed Voltage on Div 1 Dc Supply to Be 121.7-volts Dc Resulting in Reduction in Electrical Reserves.Caused by Errors in Maint Instruction 07-S-12-45
References
LER-82-078-03L, LER-82-78-3L, NUDOCS 8211040077
Download: ML20027D284 (1)

LER-1982-078, /03L-0:on 821005,battery Surveillance Procedure 06-E1-1111-W-0001 Revealed Voltage on Div 1 Dc Supply to Be 121.7-volts Dc Resulting in Reduction in Electrical Reserves.Caused by Errors in Maint Instruction 07-S-12-45

Event date:
Report date:
4161982078R03 - NRC Website

text

NRC FORM 366 U. S. NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT Attachment to AECM-82/512 Page 1 of 1 CONTROL BLOCK: l l

l

}

l l

l (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6

l0 l1l lM lS lG lG lS l1 l@l 0 l 0 l -l 0 l Ol 0 l O ! O ! - l O l 0 l@l 4 l 1 l 1 l 1 l 1 lh!

l l@

7 8 9 LICENSEE CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE JO b7 CAT $8 COWT l0ltl

,"$n"C lL l@l0 l 5 l 0l 0 l 0l 4 l 1 l 6 @l 1101 O l S l 8 l 2 l@l1 l 0 l2 l8l8l2l@

1 8

60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h I o l 2j l Battery Surveillance Procedure 06-EL-1L11-W-0001 revealed rho voir:we on rho l

l o l 31 l Division I DC supply to be 121.7 volts DC.

This resulted in a reduction in the DC l

l o 14 l lelectrical reserves for the Division I ECCS System. There was no threat to the health I l o I s l for safety of the public and no threat to plant safety due to no fission product I

o 6 linventory present in the core.

This event is being renorted under T.S.3.8.2.2.

I l o 171 lT.S.4.8.2.1.a.2. and pursuant to T.S.6.9.1.13.b.

I lois i l l

7 8 9 80 DE CODE S BC DE COMPONENT CODE SUSCODE S

E lE l Cl h W h lZ lh lB l A lT lT lR lY lh yh W h o 9 7

8 9

10 11 12 13 18 19 20 SEQUENTIAL OCCUH R E NCE REPORT REVISION

_ EVENT YEAR REPORT NO.

CODE TYPE NO.

h "LER;Ro l8l2l

[--j l0l7l8l l/l l 0] 3l y

l-l l 0l Ug EP

_ 21 22 23 24 26

, 27 28 29 30 31 32 TAK N ACTO ON L NT 1 T HOURS 22 SB IT FOR 8.

SUPPLI MANU CTURER lC l@ W @

lZl@

W h l0l0l0l0l lNl@

W@

l Al@

l C l 1 l 7 l 3 l@

3J 34 35 36 3/

40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l i j o l lThe Division I battery chargers were fo'und to be tripped on overvoltage as a probable l i i l result of errors in the Charger Maintenance Instruction 07-S-12-45.

This procedure I

lis being modified to prevent recurrence. The battery chargers were reset, placed back l i 7

'lil3l lin service, and the battery returned to normal operating voltage. This is a final I

i 4 l report.

l 7

8 9 80 A S

% POWER OTHER STATUS IS O RY DISCOVERY DESCRIPTION I1l5l b h l0l0l0]@l NA l

l B l@l Battery Charger Surveillance l

ACTIVITY CO TENT l

RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE NA l

l NA l

@ lZl@l i 6 7

8 9 10 11 44 45 80 I

PERSONNEL EXPOSURES NUMBER TYPE

DESCRIPTION

l0 l0 l0 l@y@l NA l

]

i 7 PERSO~NELIN;UWies NUMBER DESCRIP TION NA l

li la l l0 l0 l0 l@l 7

8 9 11 12 80 821028 LOSS OF OR DAMAGE TO FACILITY 43 g2110400770 200416 TYPE

DESCRIPTION

{ @l PDR ADOCK PDR l

i 9 7

H 9 10 80 PUBLICITY NRC USE ONLY r

ISSUED @ DESCRIPTION W

l NA l

l l l l l l l l l l l l l *g 2 o 7

8 9 to 68 69 80 te NAME OF PREPAREF PHONE: