05000366/LER-1981-013-03, /03L-0:on 810224,rod 22-15 Hydraulic Control Unit Accumulator Low Pressure Alarm Received.Rod Declared Inoperable.Caused by Accumulator Not Being Fully Precharged Due to Charging Rig Problems.Accumulator Charged

/03L-0:on 810224,rod 22-15 Hydraulic Control Unit Accumulator Low Pressure Alarm Received.Rod Declared Inoperable.Caused by Accumulator Not Being Fully Precharged Due to Charging Rig Problems.Accumulator Charged

ML19350C511
Person / Time
Site:	Hatch
Issue date:	03/25/1981
From:	Baxley S GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19350C510	List: 05000366/LER-1981-013, Forwards LER 81-013/03L-0 05000366/LER-1981-013-03, /03L-0:on 810224,rod 22-15 Hydraulic Control Unit Accumulator Low Pressure Alarm Received.Rod Declared Inoperable.Caused by Accumulator Not Being Fully Precharged Due to Charging Rig Problems.Accumulator Charged
References
LER-81-013-03L-01, LER-81-13-3L-1, NUDOCS 8104030506
Download: ML19350C511 (2)

LER-1981-013, /03L-0:on 810224,rod 22-15 Hydraulic Control Unit Accumulator Low Pressure Alarm Received.Rod Declared Inoperable.Caused by Accumulator Not Being Fully Precharged Due to Charging Rig Problems.Accumulator Charged

Event date:
Report date:
3661981013R03 - NRC Website

text

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m 60 61 COCKET NUYDEH 68 t,3 EVENT DATE 14 75 HEPOHT DATE 83 EVENT OESCRIPTION AND PROC ABLE CONSEQUENCES h [sTil Lmpie operating at 77", power (Rod 22-15) HCU Accumulator low oressure alarm was re-I ceived. Accumulator was.not returned to operable status per Tech. Specs. 3.1.3.5.1.1.1 o 3 l Rod 22-15 was declared inoperable per Tech. Specs. 3.1.3.5.a.2 and Tech. Specs. 3.1.3.1 o, i 1.b. I a'nd 3 were complied with for Rod 22-15.

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33 34 35 36 31 40 41 42 43 44 47 CAUSE DESCHtPTION AND CORRECTIVE ACTIONS 27 L2._IOJ IRod 22-15's accumulator was not fully precharoed in reouired time due to problems I

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50-366/1981-013 Licensee:

Georgia Power Company Facility Name:

Edwin I. Hatch j }

Docket #; 50-366

Narrative

Report for LER 50-366/1981-013 While operating at 77% power at 1230 1-24-81, Rod 22-15's HCU Accumulator

' low pressure alarm was received. The Accumulator was not returned to an operable status per Tech. Specs. 3.1.3.5.a.1.

Rod 22-15 was declared inoperable per Tech. Specs. 3.1.3.5.1.2 and Tech. Specs. 3.1.3.1.b.1 and 3 were complied with for Rod 22-15.

Red 22-15's Accumulator pressure was only reduced to approximately 900 psig.

Rod 22-15's Accumulator was not fully charged in the required time due to problems with the charging rig. When a suitable regulator was obtained, the rod's Accumulator was charged. The rod was returned to an operable status at 2323, 2-24-81.

Plans are being made by the Maintenance Department for a better charging station fe.' HCUs.

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