05000321/LER-1981-013-03, /03L-0:on 810228,HPCI Sys Was Declared Inoperable When Oil Line Near Rear Bearing Broke.Caused by Person Stepping on Oil Line & Turbine Vibration Finishing Separation.Line Repaired

/03L-0:on 810228,HPCI Sys Was Declared Inoperable When Oil Line Near Rear Bearing Broke.Caused by Person Stepping on Oil Line & Turbine Vibration Finishing Separation.Line Repaired

ML20003E441
Person / Time
Site:	Hatch
Issue date:	03/26/1981
From:	Nix R GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20003E439	List: 05000321/LER-1981-013, Forwards LER 81-013/03L-0 05000321/LER-1981-013-03, /03L-0:on 810228,HPCI Sys Was Declared Inoperable When Oil Line Near Rear Bearing Broke.Caused by Person Stepping on Oil Line & Turbine Vibration Finishing Separation.Line Repaired
References
LER-81-013-03L, LER-81-13-3L, NUDOCS 8104030468
Download: ML20003E441 (2)

LER-1981-013, /03L-0:on 810228,HPCI Sys Was Declared Inoperable When Oil Line Near Rear Bearing Broke.Caused by Person Stepping on Oil Line & Turbine Vibration Finishing Separation.Line Repaired

Event date:
Report date:
3211981013R03 - NRC Website

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00 61 DOCK E T NUV8E at 66 Fe3 EVENT OATE 14 75 HLPORT DAT E b0 EVENT oESCntPTioN ANo PROBABLE C JNSEQUENCES h O 2 l On February 28, 1981, with the reactor in the shutdown made, while 1

10131 1 performing the llPCI Ra'.ed Flow Test to prove operability, the HPCI

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1 LER Ho.: 50-321/1981-013

, (\\ /~g Licensee: Georgia Power Company Facility: Edwin I. Hatch Docket No.: 50-321

Narrative

Report for LER 50-321/1981-013 On February 28, 1981, with the reactor in the shutdown mode, while performing the llPCI. Rated Flow Test to prove operability, the HPCI System was declared inoperable when an oil line near the rear bearing broke.

As the RCIC System

- was already inoperable, the requirements of Tech Spec 3.5.E.3 were complied with.

An investigation-into the cause of this incident revealed that the oil line had been damaged previously by someone stepping on the line.

The normal vibration of-the, turbine then caused the line to finish separating.

The broken oil line went to an oil -pressure gauge.

t The line was cut off, rethreaded and reconnected in the oil system.

The HPCI Rated Flow Test was then performed satisfactorily.

This was not a repetitive event nor were there any effects to public health and safety.

. Personnel were cautioned not to step on oil lines and the remaining HPCI and RCIC

. (~%, sil. lines; on both units were inspected for similiar damage. " No other problems A / were found.

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