05000321/LER-1980-052-03, /03L-0:on 800520,during Unit Startup,Hpci Pump Was in Progress Prior to Declaring HPCI Operable.Caused by Defective Ramp Generator on Woodward Turbine Controls.Ramp Generator & Egm Control Box Replaced

/03L-0:on 800520,during Unit Startup,Hpci Pump Was in Progress Prior to Declaring HPCI Operable.Caused by Defective Ramp Generator on Woodward Turbine Controls.Ramp Generator & Egm Control Box Replaced

ML19323J263
Person / Time
Site:	Hatch
Issue date:	06/11/1980
From:	Nix R GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19323J259	List: 05000321/LER-1980-052, Forwards LER 80-052/03L-0 05000321/LER-1980-052-03, /03L-0:on 800520,during Unit Startup,Hpci Pump Was in Progress Prior to Declaring HPCI Operable.Caused by Defective Ramp Generator on Woodward Turbine Controls.Ramp Generator & Egm Control Box Replaced
References
LER-80-052-03L-01, LER-80-52-3L-1, NUDOCS 8006190619
Download: ML19323J263 (2)

LER-1980-052, /03L-0:on 800520,during Unit Startup,Hpci Pump Was in Progress Prior to Declaring HPCI Operable.Caused by Defective Ramp Generator on Woodward Turbine Controls.Ramp Generator & Egm Control Box Replaced

Event date:
Report date:
3211980052R03 - NRC Website

text

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(M 63 EVENT DATE 74 7b REPOHT DATE 80 EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h f

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LD,J l During unit startup HNP-1-3303. IIPCI Pump Operability, was in progress l

t lal l prior to declaring IIPCI operable.

IIPCI Turbine speed swung badly when l

> TT) l controlled with the test pot, making it impossible to perform the pro-l l

)l5l l cedure. No significant event took place due to this event.

There were l

iTs 1 I no effccts upon public health and safety due to this event. This is a l

D l7l l repetitive event as last reported on Reportable Occurrence Report No.

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40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h 11ol l The cause of the turbine speed swinging was a de'fective rairp generator on I

i 111 l the Woodward Turbine Controls. The ramp generator and EGM Control Box l

was replaced and the controls were recalibrated.

HPCI was tested and de-l

,,7gl 313 l l clared operable. The unit is now in full compliance and no further re-l l

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NARRATIVE

REPORT Georgia Power Company Plant E..I. Ilatch

- Baxley,' Georgia 31513-Reportable Occurrence > Report No. 50-321/1980-052.

9-With the unit at 10% thermal' power, 250 MWt, and normal start-up in progress, llPCI was.put'in standby af ter being tagged out for maintenance..IINP-1-3303,

.IIPCI Pump Operability, was being run to prove operability.

HPCI Turbine speed swung badly when controlled with the test pot, making it impossible

..to perform the procedure.

The cause of ' the llPCI Turbine speed swinging was a defective: ramp generator on the Woodward Governor Turbine Speed Controls. The ramp generator and the EGM Control Box was replaced and the controls were recalibrated per HNP-1-5287.

HPCI pump operability was then performed satisfactorily.

There were-no effects upon public health and safety due to this event. Redundant safety systems RCIC,- Core Spray, ADS, LPCI and RilR were all operable. The unit

- is now in full compliance and no further reporting is required.

Utis is a repetitive occurrence as previously reported on Reportable Occurrence Report No. 50-321/1979-017.

A review of the event did.not reveal any generic defects with the Woodward Ramp Generator.

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