05000366/LER-1980-013-03, /03L-0:on 800203,while Maint Was Performed on 2082-K002 Static Inverter,Emergency Control Transfer Switch Was Placed in Emergency Position.Reactor Core Isolation Cooling Was Rendered Inoperable.Caused by Personnel Error

/03L-0:on 800203,while Maint Was Performed on 2082-K002 Static Inverter,Emergency Control Transfer Switch Was Placed in Emergency Position.Reactor Core Isolation Cooling Was Rendered Inoperable.Caused by Personnel Error

ML19296D179
Person / Time
Site:	Hatch
Issue date:	02/20/1980
From:	Baxley S GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19296D178	List: 05000366/LER-1980-013, Forwards LER 80-013/03L-0 05000366/LER-1980-013-03, /03L-0:on 800203,while Maint Was Performed on 2082-K002 Static Inverter,Emergency Control Transfer Switch Was Placed in Emergency Position.Reactor Core Isolation Cooling Was Rendered Inoperable.Caused by Personnel Error
References
LER-80-013-03L-01, LER-80-13-3L-1, NUDOCS 8002290446
Download: ML19296D179 (2)

LER-1980-013, /03L-0:on 800203,while Maint Was Performed on 2082-K002 Static Inverter,Emergency Control Transfer Switch Was Placed in Emergency Position.Reactor Core Isolation Cooling Was Rendered Inoperable.Caused by Personnel Error

Event date:
Report date:
3661980013R03 - NRC Website

text

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PLAtlT E. I. HAT Q Licensee Event Report R0 Report No. 50-366/1980-13 February 20, 1980

NARRATIVE

REPORT On February 3,1980 at 1055 EST, the RCIC systen was discovered to have been inoperative since 0730 EST.

The system had not been declared inoperative.

The system inoperability was due to the combination of a failed static inverter for the remote shutdown panel and the placement of the emergency transfer control switch to the emergency position.

The failed inverter rendered the RCIC controls at the remote shutdown panel inoperative.

The emergency control transfer switch transfered control to the inoperable panel controls. The switch had been placed in the emergency position to ailow maintenance personnel to troubleshoot the pro-blem with the static inverter.

Upon discovery of t'ie inoperability of RCIC, the operator returned the emergency control transfer switch to the normal position.

Maintenance personnel completed the repair of the static inverter and returned the remote controls to an operable status. There was no effect on normal plant operation. The health and safety of the public was not effected.

A review of the event found no generic problems.

HPCI, Core Spray, and ADS were all operable during the event.