05000281/LER-1978-036-03, /03L-0 on 781015:compensatory Surveillance on RCP Cstator & Hearing Temp Had Not Been Performed.Caused by Failure of Operating Personnel to Restore Process Computer Trend Block Following Computer Reinitialization

/03L-0 on 781015:compensatory Surveillance on RCP Cstator & Hearing Temp Had Not Been Performed.Caused by Failure of Operating Personnel to Restore Process Computer Trend Block Following Computer Reinitialization

ML18113A609
Person / Time
Site:	Surry
Issue date:	11/03/1978
From:	Baucom T VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
Shared Package
ML18113A608	List: 05000281/LER-1978-036, Forwards LER 78-036/03L-0 05000281/LER-1978-036-03, /03L-0 on 781015:compensatory Surveillance on RCP Cstator & Hearing Temp Had Not Been Performed.Caused by Failure of Operating Personnel to Restore Process Computer Trend Block Following Computer Reinitialization
References
LER-78-036-03L, LER-78-36-3L, NUDOCS 7811090240
Download: ML18113A609 (2)

LER-1978-036, /03L-0 on 781015:compensatory Surveillance on RCP Cstator & Hearing Temp Had Not Been Performed.Caused by Failure of Operating Personnel to Restore Process Computer Trend Block Following Computer Reinitialization

Event date:
Report date:
2811978036R03 - NRC Website

text

NRG.FORM 36-6 (7-77) e U.S. NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT CONTROL BLOCK: ~' -....__~ _

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I With the unit in normal operation at rated power, it was determined that compensa-I tory surveillance on RCP "C" stator and bearing temperatures had not been performed CUTI.

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This is contrary to T.S. 3.21.A and is reportable per T.S. 6.6.2.b(3).

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I The health and safety of the public were not affected.

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!This occurre~ce was brought about'-=-by the failure of operating personnel to restore ITTIJ I the process coquter trend block following a computer reinitialization., Upon the r:IIIJ I discovery 0£ the 1.2.a.vailability of surveillance data, the computer trend block was reinitiated.

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"Attachment (page 1 of 1)~

Surry Power Station, Unit 2 Docket No: 50-281 Report No: 78-036/0JL-0 Event Date: 10-15-78 Missed Surveillance -

RCP 'C' Fire Protection

1. Description of Event

With unit in normal operation at rated power, it was determined that compensatory surveillance on RCP "C" stator and bearing temperatures had not been performed hourly as required, from 1650 on 10-15-78 to 0138 on 10-16-78.

This surveillance was required because the fire protection heat detector system on RCP "C" was not operable.

The event constitutes a condition contrary to Technical Specification 3.21.A and is reportable in accordance with Technical Specification 6.6.2.b(3).

2. Probable Consequences/Status of Redundant Systems:

Although the hourly surveillance was missed, the unit process computer would have flagged high stator or bearing temperature through its alarm programs.

Therefore, the health and safety of the public were not affected.

3.

Cause

This occurrence was brought about by the failure of operating personnel to restore the process-computer trend block which provides the surveillance data following a computer reinitialization.

4.

Immediate Corrective Action

Upon. the discovery of the unavailability of surveillance data, the computer tre:ld block was reinitiated.

Subsequently,_ the RCP "C" fire prevention *system detector was repaired.

5.

Scheduled Corrective Action:

Tne -prcblem was corrected innnediately and no further action is deemed necessa...ry.

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• . 6. *Action Taken to Prevent Recurrence:

Operators were instructed on 10-17-78 to monitor once per hour::the temperature of the systems affected by the RCP."C" fire protection sensor failure.

7.

Generic Implications:

There are no generic implications associated with this event.