ML20042G732

LER 90-010-00:on 900418,oncoming Shift Supervisor Found That Containment Level C Temp Improperly Recorded.Caused by Data Being Recorded & Reviewed from Malfunctioning Indication.Individuals counseled.W/900511 Ltr

ML20042G732
Person / Time
Site:	Vogtle
Issue date:	05/11/1990
From:	Hairston W, Odom R GEORGIA POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
ELV-01636, ELV-1636, LER-90-010, LER-90-10, NUDOCS 9005160022
Download: ML20042G732 (4)

Text

- G2croia Power Company 9- 333 Piedmont Amnue ,

ife Atlanta Georgia 30308 -

t g, Telephone 404 526 3195

• . Maihng Address.

40 Inverness Center Parkway Post Office Box 1295 Birmingham, Alabama 35201 Telephono 205 008 $581

. l!c LDuthirn t%CllC Sy$lem W, G. Hairston, Ill l

~

senior Vice President Nuclear Operatons May 11, 1990 ELV-01636

.0381  ;

Docket No. 50-424 I 1

U. S. Nuclear. Regulatory Commission -j ATTN: Document Control Desk {

Washington, D. C. 20555  ;

Gentlemen:

V0GTLE ELECTRIC GENERATING PLANT LICENSEE EVENT REPORT IMPROPER RECORDING OF DATA LEADS TO INADEQUATE -I TECHNICAL SPECIFICATION SVRVEILLANCE ,i

'In.accordance with 10.CFR 50.73, Georgia Power Company hereby submits the ,i enclosed report related to an event which was discovered on April 18, 1990. 1 Sincerely, ul.d k.//, M (

W. G. Hairston, III WGH,III/NJS/gm

Enclosure:

LER 50-424/1990-010  :

Georaia Power Company 1

.xc:

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. T. A. Reed, Licensing Project Manager, NRR Mr. R. F. Aiello, Senior Resident Inspector, Vogtle 9005160022 900511 PDR S

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DOCRET NUMBE R (2) P AGE (3' F..C4LITY hAME til V0GTLE ELECTRIC GENERATING PLANT - UNIT 1 o i s I o j o I o i 41214 1 lod 0l3 itTEE 446 IMPROPER RECORDING 0F DATA LEADS TO INADEQUATE TECHNICAL SPECIFICATION SURVEILLANCE EVENT DAf t IS) LER NUMSER 461 REPORT DATE 176 OTHER 7 ACittills INvotvtD (6)

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20 406tsHitbel 60 73 eH2Hel 20 406teH11tvl 50.73teH21bhi 60.73 tall 2Hul LICENSEE CONT ACT FOR THis LER 6121 NAMg TELEPHONE NUMBER AREA CODE R. M. 000M, NUCLEAR SAFETY AND COMPLIANCE 4061 82i 1 6-l320l1 i 11 COMPLETE ONE LINE FOR E ACH COMPONENT F AILURE DESCRISED IN THis REPORT 113i CAUSE Sv5 TEM COMPONENT "j g"C "fD NPR CAUSE SYSTEM COMPONENT Mh AC REPORtA LE l l l l 1 1 I I I i 1 l l I l l l 1 l l I I l l I l I i

$UPPLEMENTAL REPORT EXPECTED (14i MONTH DAY YEAR YES (19 vos corrotere WX*tCTRO SUMt!$$lON 9A rto NO l l l L98TR ACT tvemt to IM spaces n e . ecoronometry Menen nunte spece troewerrten knest l1th On 4-18-90, during his review of completed procedure 14000-1, " Operations Shift and Daily Surveillance Logs", the oncoming Unit Shift Supervisor (USS) found that on 4-17-90 and 4-18-90, containment level C temperature had been recorded from Emergency Response Facility (ERF) computer point T7502 which had been reading erroneously low since 4-11-90. This low reading caused the overall containment average temperature, comprised of the average of level 2, level' B and level C readings per Technical specification 4.6.1.5, to be erroneously low.

A review of surveillances performed on 4-12-90 through 4-16-90 determined that alternate indication had been utilized and the results were satisfactory. The surveillance on 4-11-90 was performed prior to the failure of computer point T7502.

The cause of this event was a cognitive personre! error by the on-duty Reactor Operator (RO) and Unit Shift Supervisor (USS) in that they recorded and reviewed data from a malfunctioning indication. In addition, the USS on duty on 4-12-90 failed to ensure adequate turnover of information to prevent use of the malfunctioning computer point. The USS and R0 responsible for the inadequate

surveillances were counseled regarding the importance of attention to detail in I the performance and review of surveillance procedures. The USS on duty on L 4-12-90 was counseled regarding the need to ensure adequate turnover of information to the oncoming shift.

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0 l1l 0 -- 0 0 0]2 or 0l3 Text w- . -w. N, ,-c r.,,,, asmmn A. REQUIREMENT FOR REPORT This report is required per 10 CFR 50.73 (a)(2)(1) because a surveillance required by the Technical Specifications (TS) was not performed adequately -

within the specified time interval. A containment air temperature reading required by TS 4.6.1.5 was obtained from a computer indication that was not functioning properly.

B. UNIT STATUS AT TIME OF EVENT i At the time of discovery of this event on 4-18-90, Unit I was in Mode 1 (power operation) ~ at approximately 11% of rated thermal power. Other than that described herein, there was no inoperable equipment whi_ch contributed to the occurrence of this event.

C. DESCRIPTION OF EVENT On 4-18-90, during his review of completed Procedure 14000-1, " Operations Shift and Daily Surveillance Logs", the oncoming Unit Shift Supervisor (USS) found that on 4-17-90 and 4-18-90, containment level C temperature had been recorded from Emergency Response Facility (ERF) computer point T7502 which is specified by Procedure 14000-1. This computer point had been reading erroneously low (.027 degrees fahrenheit) since 4-11-90.- This low reading caused the overall containment average temperature, comprised of level 2, level B and level C readings, to be erroneously low, Upon noting this, the USS had ERF computer point T7502 removed from trending so that erroneous readings would not be taken. An investigation of surveillances performed on 4-12-90 through 4-16-90 determined that alternate indication was used and the results were satisfactory. The surveillance on 4-11-90 was performed ,

prior to the failure of computer point T7502. l 2

The cause of this event was cognitive personnel error. The Reactor Operator 'l (RO) recorded data from en indicatior wnich was not functioning properly and I failed to realize it was an unrealistic value. This data was also reviewed by a USS other than the one that discovered the discrepancy. In addition, the USS on duty on 4-12-90 failed to ensure adequate turnover of information to prevent use of the malfunctioning computer point. There were no unusual characteristics of the work location which contributed to the occurrence of this event. l NRC Form 306A (649) ,

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_ LICENSEE EVENT REPORT (LER) ins ^u','So'df,E.E"o0'E?iviiT' C io fT" ,T".%'! -

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0!?#.."JJ OF MANAGEMENT*n'!'u' UDGET,AND .Cha,^=?Wi W ASHINGTON, DC 20603. L'"Mi?Ci FACILITY NAME di DOCKET NVMBER (2) LER NUMBER (6) PA08 (3) viaa "Etm

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1 VEGP - UNIT 1 o ls l0 l0 lo l4 l 2l4 91 0 0l1l0 -

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TexTw - ., w, =c w muwnn E. ANALYSIS OF EVENT .

i A review of recorded data for containment levels 2 and B from properly functioning indication showed that, for surveillances performed on 4-17-90 and 4-18-90, containment temperatures were well below the TS limit of 120 degrees fahrenheit. Surveillances performed between 4-12-90 and 4-16-90, using alternate indication, showed that containment level C readings were consistent with level 2 and level B readings and that all readings were well below the TS limit. The surveillance on 4-11-90 was performed prior to the failure of computer point T7502. Therefore, it is' concluded tnat there was no adverse effect on plant safety or public health and safety as a result of this event.

F. CORRECTIVE ACTIONS

1. The USS and R0 responsible for the inadequate surveillances were counseled regarding the importance of attention to detail in performance and review of surveillance procedures.

2. The USS on duty on 4-12-90 has been counseled regarding the need to ensure adequate turnover of information in order to prevent a recurrence of this type of event.

3. A copy of this LER will be placed in the Operations Reading Book for reading by licensed operators.

4. Procedural controls are being evaluated for sddressing malfunctioning computer points. This evaluation will be completed by 9-15-90.

G. ADDITIONAL INFORMATION

1. Failed Components None

2. Previous Similar Events LER 50-424/1990-001, dated 3-27-90, described a previous event for Unit 2 involving an inadequately performed Technical Specification surveillance. LERs 50-425/1989-026, dated 10-2-89, and 50-424/1988-012, dated 5-12-88, involved improperly completed surveillances. The causes of these events were different than this event.

3. Energy Industry Identification System Code:

Containment Environmental Monitoring System - IK Nf.C Fenn StGA (6-891

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