ML19316A389

RO 269/78-10:on 780323,Unit 2 Not Verified Operable within Time Limit.Caused by Personnel Error.Station Procedure, Removal & Restoration of Equipment, Not Properly Used. Personnel Instructed by Operating Engineer

ML19316A389
Person / Time
Site:	Oconee
Issue date:	04/07/1978
From:	DUKE POWER CO.
To:
Shared Package
ML19316A386	List: ML19316A385 ML19316A389 ML19316A392
References
RO-269-78-10, NUDOCS 7912110649
Download: ML19316A389 (1)

Text

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' DUKE POWER COMPANY OCONEE UNITS 1,2,3 Report Number: R0-269/78-10 Report Date: April 7, 1978 Occurrence Date: March 24, 1978 "'

Facility: Oconee Nuclear Station, Seneca, South Carolina Identification of Occurrence: Failure to Verify Keowee Hydro Unit 2 Operability Conditions Prior to Occurrence: Unit 1 100% FP '

Unit 2 100% FP Unit 3 100% FP Description of Occurrence:

On March 23, 1978 at 0749 Keowee Hydro Unit 1 was removed from service for planned breaker maintenance in accordance with procedure MP/0/A/

2001/2. Keowee Unit 2, the standby unit, was verified operable at 0722 and at 1544. The verification at 0722 satisfied the "erification with-in one hour requirement of Specification 3.7.26b, but the reverification at 1544 failed to meet the requirement to verify the standby Keowee unit operable within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

Apparent Cause of Occurrence:

The cause of this occurrence was a personnel error. Personnel failed to properly use the station procedure " Removal and Restoration of Equip-ment" to document the testing requirements when Keowee Unit 1 was removed from service.

Analysis of Occurrence:

Keowee Unit 2 was verified operable at 1544. Additional sources of off-site power as well as Keowee Unit 2 were available to provide emergency power for the Oconee Station if it had been required. Thus, the health and safety of the public were not endangered by this incident.

l Corrective Action: l Operating personnel concerned with this incident were reviewed by the l Operating Engineer to assure that they fully understood the required l actions.

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The procedure for removal of a Keowee Unit from service has been revised to include a checklist to assure that the requirements of Technical Spe-cification 3.7.2 are complied with.

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