05000339/LER-1980-077-03, /03L-0:on 801022,improper Breaker Alignment Caused Number of Operable High Head Safety Injection Pumps to Be Reduced to One.Caused by Failure to Follow Proper Procedure. Breakers Realigned

/03L-0:on 801022,improper Breaker Alignment Caused Number of Operable High Head Safety Injection Pumps to Be Reduced to One.Caused by Failure to Follow Proper Procedure. Breakers Realigned

ML19345B117
Person / Time
Site:	North Anna
Issue date:	11/20/1980
From:	Cartwright W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19345B116	List: 05000339/LER-1980-077, Forwards LER 80-077/03L-0 05000339/LER-1980-077-03, /03L-0:on 801022,improper Breaker Alignment Caused Number of Operable High Head Safety Injection Pumps to Be Reduced to One.Caused by Failure to Follow Proper Procedure. Breakers Realigned
References
LER-80-077-03L-01, LER-80-77-3L-1, NUDOCS 8011260180
Download: ML19345B117 (2)

LER-1980-077, /03L-0:on 801022,improper Breaker Alignment Caused Number of Operable High Head Safety Injection Pumps to Be Reduced to One.Caused by Failure to Follow Proper Procedure. Breakers Realigned

Event date:
Report date:
3391980077R03 - NRC Website

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U.S. NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT CGNTROL BLOCK / / / / / / / (1)

(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) is/1/

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LICE.SSEE CODE LICENSE NUMBER LICENSE TYPE CAT

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DOCKET NUMBER EVENT DATE REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES (10)

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On October 22, 1980, while preparing charging high safety injection pump "1C"

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for testing after maintenance, improper breaker alignment caused the number of /

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operable high head safety injection pumps to be reduced to one.

The T.S.

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require two operabic charging pumps in Mode 1.

Unit 2 was in Mode I wnen the /

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event occurred. This event is reportable pursuant to T.S. 6.9.1.9.c.

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The Action Statement of the LCO was met.

The public health and safety were

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not affected.

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SYSTEM

CAUSE

CAUSE COMP.

VALVE CODE CODE SUBCODE COMP 0 KENT CODE SUBCODE SUBCODE [0f2/

/S/F/ (11) LA/ (12) [B/ (13) /P/U/M/P/X/X/ (14) [B/ (15)

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SEQUENTIAL OCCURRENCE REPORT REVISION LER/R0 EVENT YEAR REPORT No.

CODE TYPE NO.

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ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRD-4 PRIME COMP. COMPONENT TAKEN ACTION ON PLANT METHOD HOURS SUBMITTED FORM SUB. SUPPLIER MANLTACTLTER [lI/ (18) [Z/ (19) [Z/ (20) [Z/ (21) /0/0/0/0/ (22) [Y/ (23) [N/ (24) [N/ (25) /P/0/2/5/ (26)

CAUSE DESCRIPTION AND CORRECTIVE ACTIONS (27)

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An operator failed to follow written procedures and made an improper breaker

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alignment.

The breakers were realigned properly and operability of a second

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charging high head safety injection pump restored and tested within 40 minutes./

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FACILITY METHOD OF STATUS

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/ (30) DISCOVERY DISCOVERY DESCRIPTION (32)

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/ OPERATOR OBSERVATION

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ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY (35)

LOCATION OF RELEASE (36)

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PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION (39)

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PERSONhEL INJURIES NU!!BER DESCRIPTION (41)

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LOSS OF OR DA'! AGE TO FACILITY (

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DESCRIPTION

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PUBLICITY I S S !'ED DESCRIPTION (45)

NRC USE ONLY

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NAME OF PREPARER W.

R. CARTkRIGHT PHONE (703) 394-5151 8 01 12 6 (t/1"C2

4 Virginia Electric and Power Company North Anna Power Station, Unit (i2 Attachment: Page 1 of I Docket No. 50-339 Report No. LER 80 077/01T-0

Description of Event

Ou October 22, 1980, while preparing charging high head safety injection pump "1C" for testing after maintenance, both charging high head safety injection pump "lC" 11 and J bus breakers were racked in causing an automatic lock out of the J bus "?B" charging high head safety injection pump. The number of operable charging high head safety injection pumps was reduced to one.

The Technical Specifications require two operable charging high head safety injection pumps in Modes 1, 2, and 3.

Unit 2 was in Mode I at 100 percent power, the "1A" charging high head safety injection pump was running, and the "1B" pump was in "AUT0" when the event occurred. This event is reportable pursuant to T.S. 6.9.1.9.c.

Probable Consequences of Occurrence The "lA" charging high head safety injection pump remained operable and the operability of the "1B" pump was restored and tested within 40 minutes of the event. The Action Statement of the LCO was met.

The public health and safety were not af fected.

Cause of Event

An operator failed to follow written procedures and racked in both breakers.

Immediate Corrective Action

An alarm indicating breaker misalignment was received in the Control Room.

The Shift Supervisor immediately called the.switchgear room and instructed personnel to rack out both breakers.

The breakers were racked in for approximately one minute before corrective action was taken. The interlock on the "18" charging safety injection pump was leared 20 minutes after the event. The "1B" pump was started 40 minutes after the event to verify operability.

Personnel involved were reinstructed to carefully follow and adhere to written procedures.

Sched : led Corrective Action No scheduled corrective actions are required.

Actions Taken to Prevent Recurrence Personnel involved were reinstructed to carefully follow and adhere to written pror dures.

Generic I.nplications t

Ihis event had no generic implications.

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