05000280/LER-1988-019-01, :on 880625,emergency Diesel Generator 1 Unintentionally Started.Caused by Technician Accidentally Shorting Fast Start Relay.Electrician Counseled to Proceed Cautiously When Installing Jumpers

:on 880625,emergency Diesel Generator 1 Unintentionally Started.Caused by Technician Accidentally Shorting Fast Start Relay.Electrician Counseled to Proceed Cautiously When Installing Jumpers

ML18152B062
Person / Time
Site:	Surry
Issue date:	07/18/1988
From:	Benson D VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
LER-88-019-01, LER-88-19-1, NUDOCS 8807280364
Download: ML18152B062 (4)

LER-1988-019, on 880625,emergency Diesel Generator 1 Unintentionally Started.Caused by Technician Accidentally Shorting Fast Start Relay.Electrician Counseled to Proceed Cautiously When Installing Jumpers

Event date:
Report date:
2801988019R01 - NRC Website

text

POW 28-06-01

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TITLE 1*1 START OF EMERGENCY DIESEL GENERATOR DUE TO PERSONNEL ERROR IVENT DATE 151 LIii NUMIEA Ill Al,OAT DATE 171 OTHER FACILITIES INVOLVED Ill MONTH DAY YEAR YEAR

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. I I IU"LEMENT-'L FIE,OIIT EX,ECTED 1,.1 MONTM DAV YEAR EXPECTED SUBMISSION ~ NO n YES /If yn, compl*te EXPECTED SUBMISSION DATE/ DATE 1151 I I I ABSTRACT (Limit ro 1400 11>>C*1. i.,..,oorox,m*rtly fif?Hn 11ngl1-11>>c1 rvtHwritren hn11J 1111 NRC Form Jae ,g 831 On June 25, 1988 at 2010 hours, with Unit 1 in cold shutdown, the number 1 Emergency Diesel Generator (EDG) (EIIS-DG) was unintentionally started during preparation for performance of a periodic test of voltage and speed permissive relays for the number 1 EDG. Since the start of the EDG was unintentional, it is considered an Engineering Safeguards Feature (ESF) actuation and is being reported in accordance with 10CFRSO. 73 (a) (2) (iv). An electrician placing a jumper around one of the EDG fast start relays accidentally hit a third contact when placing the jumper. This shorted the fast start relay, which completed the start matrix and the EDG

started, Operations personnel and the electrician verified that shorting the fast start relay was the cause of the EDG start.

The jumper was properly placed and, since the test required that the EDG be running, the voltage and speed permissive test commenced. The electrician has been counseled to proceed cautiously when installing jumpers. 0007280364 ~~gbA~o (ot 1.J) PDR ADOCK PNU

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• -1 N'lC Form 366A 19-831 FACILITY NAME (1)

POW 28-06-01 LICENSEE EVENT REPORT (LER) TEXT CONTINUATION U.S. NUCLEAR REGULATORY COMMISSION APPROVEO 0MB NO. 3150-0104 EXPIRES: 8/31 /88 DOCKET NUMBER 12) YEAR LER NUMBER (6)

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:::::::::: REVISION NUMBER

- NUMBER PAGE (31 SURRY POWER STATION, UNIT 1 0 15 IO IO IO 12 I 8 10 818 -

0 I ll 9 - 0 10 012 OF O I 3 TEXT 1/f more space i* required. USll *ddition*I NRC Form 3S6A'*I (17) NAC FOAM 366A 19-83) 1.0 Description of the Event On June 25,. 1988 at 2010 hours, with Unit 1 in cold. shutdown, the number 1 Emergency Diesel Generator (EDG) (EIIS-DG) was unintentionally started during preparation for performance of a periodic test of voltage and speed permissive relays for the number 1 EDG. Since the start of the EDG was unintentional, it is considered an Engineering Safeguards Feature (ESF) actuation and is being reported in accordance with 10CFRS0.73(a)(2)(iv).

2.0 Safety Consequences and Implications

The number 1 EDG is designed to supply power to the lH emergency bus (EIIS-EK) during undervoltage conditions. During this event, the number 1 EDG was fully capable of performing its intended function. The~efore, the health and safety of the public were not affected. 3.0

Cause

An electrician placing a jumper around one of the EDG fast start relays accidentally hit a third contact when placing the jumper. This shorted the fast start relay, which completed the start matrix and the EDG started. 4.0 Immediate Corrective Action(s) Operations personnel and the electrician verified that shorting the fast start relay was the cause of the EDG start. The jumper was properly placed and, since the test required that the EDG be running, the voltage and speed permissive test commenced. 5.0 Additional Corrective Action(s) No further action was necessary. 6.0 Action(s) Taken to Prevent Recurrence The electrician has been counseled to proceed cautiously when installing jumpers.

t,RC Form 366A 19-831 FACILITY NAME (1 I LICENSEE VENT REPORT (LER) TEXT CONTINU,ION DOCKET NUMBER (21 POW 28-06-01 U.S. NUCLEAR REGULATORY COMMISSION, APPROVED OMS NO. 3150-0104 EXPIRES: 8131188 LEA NUMBER 161 PAGE (3) SURRY POWER STATION, UNIT 1 0 1 s IO I O I O I 218 10 8 18 0 I 11 9 - 0 IO O I 3 OF O I 3 TEXT (ff mom,paCtJ i* mquiffld, u"" *dditional NRC Form 366A '*) 1171 NRC FOAM 366A (9-831 7.0

Similar Events

None. 8.0 Manufacturer/Model Number N/A

July 18, 1988 U.S. Nuclear Regulatory Commission Document Control Desk 016 Phillips Building Washington, D.C. 20555 Gentlemen: VIRGINIA ELECTRIC AND POWER COMPANY Surry,ower Suitlon P.O. lox 315 Surry, VlrQ4nle l3883 Serial No.: Docket No.: Licensee No.: 88-032 50-280 DPR-32 Pursuant to Surry Power Station Technical Specifications, Virginia Electric and Power Company hereby submits the following Licensee Event Report for Surry Unit 1. REPORT NUMBER 88-019-00 This report has been reviewed by the Station Nuclear Safety and Operating Committee and will be reviewed by Safety Evaluation and Control. Very truly yours, David L. Benson Station Manager Enclosure cc: Dr. J. Helson Grace Regional Administrator Suite 2900 101 Marietta Street, NW Atlanta, Georgia 30323 }}