ML20042D357

LER 89-019-00:on 891206,discovered That Tech Specs Violated Due to Foreman Approving Measurements of Cell Recorded as 2.10 V on 891122.Caused by Personnel Error & Inadequate Procedure.Foreman counseled.W/900102 Ltr

ML20042D357
Person / Time
Site:	Vogtle
Issue date:	01/02/1990
From:	Hairston W, Odom R GEORGIA POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
ELV-01188, ELV-1188, LER-89-019-01, LER-89-19-1, NUDOCS 9001090052
Download: ML20042D357 (4)

Text

L - ,

1O[ g . k .Georgio Power Ccmpany -

• 1333 Piedmont Awnve

. Atlanta, GeotDia 30308

,1ciopnone 404 526-3195

.j'M d ' ' Mailing Address:

,"N'<

. 40 Irwerness Center Parkway Post OfIce Box 1295 -

BarminDham. Atabama 35201

Telephone 205 868 5501 M January 2, 1990 'te m*'" e/src srstern W'O. Hairston, til Senior Vce President --

Nuclear. Operations - ELV-01188 0180

. Docket.No. 50-424-

- U.: S. Nuclear ~ Regulatory Commission 7~

ATTN: Document . Control Desk 4

Washington, D. C- 20555 .

Gentlemen:

V0GTLE ELECTRIC GENERATING PLANT LICENSEE EVENT REPORT PROCEDURE INADEQUACY LEADS TO TECHNICAL SPECIFICATION-VIOLATION In accordance withL10 CFR'50.73, Georgia Power Company hereby submits the-L enclosed report related to an event which was discovered on December 6,1989.

Sincerely,

, 4 A. /WW W. G. Hairston, III 7

WGH,III/NJS/gm:

Enclosure:

LER 50-424/1989-019 xc: Georaia Power Company Mr. C. K. McCoy Mr. G. Bockhold, Jr.

Mr.-P. D. Rushton Mr . R. M. Odom NORMS U. S. Nuclear Reaulatory Commission Mr. S. D. Ebneter, Regional Administrator Mr. J. B. Hopkins, Licensing Project Manager, NRR

~.Mr. J. F. Rogge, Senior Resident Inspector, Vogtle j,[O $kOh '

$4

, S S~E3%

4

<f,

. p , , ' O, .

asMC Form See U $. NUCLE AR 3.52ULATOIY COMMISSION APPIOVID OMB NO 2150 0104 -

' '"'""8"

. ,, LICENSEE EVENT REPORT (LER) .

l DOCKE T NUMSER 421 PAGE(3' 9ACILITY 8eAME tu V0GTLE ELECTRIC GENERATING PLANT - UNIT 1 ois;oio;oi4ipi4 3joFI013 TsTLS 141 PROCEDURE INADEQUACY LEADS TO TECHNICAL SPECIFICATION VIOLATION EVENT DATE (S) LIR NUMSER 48) REPORT Daf t (7) OTHER F ACILITIES INVOLVED tel

'L f ACILIT Y NAMgg QQCKE T NUM$tRt$1 j MONTH day vtAR VEAR IIP [ [ MONT H OAV YEAp 0151010101 I i

~ ~

1 \'1 2l2 8 9 2 8[9 0l 1l9 0l0 0l1 0l 2 9\0 o isio ic i oi- i i 9,,,g,g THl8 REPORT 88 SUDutTTED PUR5UANT TO THE REQUIREMENTS Oe to CF R 6. Ich.c4 on. or mor. .'(*. fe**mst 1111 MOO 4 W 20 402N 20 406tel 60.73teH2Hn) 73 71M 1

n., u.i g a 40.i.HiH., ami.Hu a ni.H2H,i H0i 11010 20 40saHum _

n=aH2i _

n ni.H2Hva _ g, Hgs g g J664J 20 406(sit 1H40

] 60.736eH2H68 60.73 tail 2 Hen 6H A >

20 406teH1Hivl 50.730 sit 2H4) 60 T3teH2Hvil6HB) 20 4061sH1Hel 50 73saH2Had 50.73teH2 H al LICENSEE CONT ACT FOR THl3 LER HIl gggg. TELEPHONE NUMBER AHE A CODE R. M. ODOM, NOCLEAR SAFETY ANDiC0tiPLIANCE 404 i i 81 2 i6 l-i3 12:011 COMPLEf t ONE LINE FDR E ACH COMPONENT F AILumt DESCRISED IN THis REPORT H31 fA 4 RifoONfA pp E AC CAUSE SYSTEM COMPONENT **[X'g AC CAU$1 SYSTEM COMPONENT MANN'g R E,P g pp I I I I I I I I I I I I I I l l l~ 1 I1 l 1 l l 1 111

- SUPPLEMENT AL REPORT EXPECTED H41 EXPECTED

~],u ur ,. ..,,. umeno svowssiON oa w T NO l 1 l A. 1RAC, m _,, , . ,,-.,s ...,- .-. ,m . y . ~ ,. ~ . ,~.,n.I On 11-22-89, an electrician was performing monthly preventive maintenance (l'M) on a Class lE battery bank. Several parameters on each battery cell were measured and recorded on a data sheet and attached to the PM work order. The PM was completed and aigned-off as approved by the electrician's foreman.

On 12-06-89, the system engineer was reviewing the work order and found that the measured voltage of one cell was recorded as 2.10 volts. Technical Specifications (TS) require entry into a Liraiting Condition for Operation (LCO) when the voltage is not greater than 2.10 volts. Therefore, a TS violation occurred because-a LC0 action statement was not completed within the allowable time.

The causes of this event were a cognitive personnel error and an inadequate procedure. Although the voltage limit identified in the procedure was not met, the maintenance foreman erroneously approved the measurements and failed to alert the Shift Supervisor of the abnormal parameter. The foreman has been counseled and a memo will be sent to other appropriate personnel describing this event and the need for adequate reviews of documentation. Secondly, the procedure used did not indicate that cell voltage limits were tied to TS requirements. This procedure will be changed.

E*d'~"* ____ - _ _ _ _ _ _ _ - - _ _ _ _ _ -

p~. ncl F NMC Form ansa < ,

U.S. NUCLEA3 7.EIULATORY COMMISSION

$ ~ UCENSEE EVENT REPORTiLER) TEXT CONTINUATION  : mRovto oMe soaiEoio4: 1

txPints

s'ailes ,

7 ACILifY NAME (i) DOCKET NUMBER (2) LER NUMSER ($1 PAGE (3) l

• ~

f- Y8A" '

n Nv"gYa VEGP - UNITLl' TEXT M more spece de agurest, see asloNNmelNRC FON 3e&4W (i7) oisl0lol0l4l2l4 8l9 -

0l1l9 -

0l0 0 l2 oF 0 l3 l

)

A. ~ REQUIREMENT FOR REPORT I This report is required per 10.CFR 50.73 (a)(2)(i) because the unit operated ,

in a condition outside of Technical Specification (TS) requirements. A Limiting Condition for Operation (LCO) action statement was not completed within the allowable time when it was found that a component was not meeting its operability requirements.

-B. UNIT STATUS AT TIME OF EVENT At the' time of the occurrence of this event on 11-22-89, Unit I was o)erating in Mode 1/(Power Operation) at 100% of rated thermal power. Other ,

tlan that described herein, there was no inoperable equipment which contributed to the occurrence of this event.

C. DESCRIPTION OF EVENT 1 On-ll-22-89, _ an electrician was performing monthly preventive maintenance (PM)- on battery bank 1001B in the 125 volt DC Class lE electrical system per Procedure 27915-C, " General Battery Maintenance". Several parameters on each battery cell were measured and recorded on the " Battery Maintenance Data Sheet" attached to the PM work order. The PM was completed and signed-off as approved by the electrician's foreman.

On 12-06-89, at approximately 1330 CST, the system engineer was reviewing the work order and found that the measured voltage of cell #9 was 2.10 volts. Technical Specification Table 4.8-2 requires the float voltage for each connected cell to be greater than 2.10 volts. If this condition is not '

met, the applicable action statement requires that the battery bank be restored "to OPERABLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />".

Therefore, a TS violation occurred when a LCO action statement was not completed within the allowable time. The Shift Supervisor was notified and cell #9 voltage was measured at 1432 CST and found to be 2.20 volts. j D. CAUSE OF EVENT l

The causes of this event were:

1. Cognitive Personnel Error.

Although the voltage acceptance criteria identified in the procedure was not met, the foreman erroneously approved the measurements. This error was not the result of any unusual characteristics of the work location. I gg oau m. .u... m , ..._ m o.o = .

f_g ,

D ~ ,ue m . se.A . - us. wuctu.a r.s:utArm commesion I

,  : LICENSEE EVENT REPORT (LER) TEXT CONTINUATION maoveo ove wo mo-oin

, ,p (XPtRES: t/31/M FACIL4ry NAME (1) .. .

DOCKEY NUMBER (2) LtR NUMBER ($1 PAGE (3)

VEAR .

"U.Nn '

NNsYn VEGP - UNIT li o js o lo jo j 4l2 $ 8]9 -

0'l1 l 9 ._ 00 0_ l- 3or 0 ;3 rixta . .

,wn.cr amonni-

2. Procedure Inadequacy.

-Procedure 27915-C did not indicate that. cell voltage limits were tied to TS voltage parameter requirements nor did it indicate that a TS LC0 may need-to be entered based on measurements taken.

E. ' ANALYSIS OF EVENT Measurements taken both prior to the 11-22-89 event and again on 12-06-89 indicated acceptable = cell voltage values. Additionally, the other three battery banks in the system remained operable during the period of time involved.- Based on these considerations, there was no adverse effect on plant safety or public health and-safety as a result of this event.

F. CORRECTIVE ACTIONS 1.. The Georgia Power Company foreman involved has been' counseled regarding the importance of attention to detail in reviewing documentation.

2. A memo'has been sent to other appropriate personnel describing this event and the need for adequate reviews.

3. Procedure 27915-C will be reviewed and tevised as necessary by January 12, 1990.

G. ADDITIONAL INFORMATION

1. Failed Components None

2. Previous Similar Events None -

3. Energy Industry Identification System Code 125 volt DC Class 1E Electrical System - EJ 4 4 1