05000321/LER-1980-126-03, /03L-0:on 801226,dinitrogen Storage Tank Inventory Reduced to Below Tech Spec Level.Caused by Pressure Control Valve Sticking Causing Tank Relief Valve to Open.Pressure Control Loop Placed in Manual Control

/03L-0:on 801226,dinitrogen Storage Tank Inventory Reduced to Below Tech Spec Level.Caused by Pressure Control Valve Sticking Causing Tank Relief Valve to Open.Pressure Control Loop Placed in Manual Control

ML19351F351
Person / Time
Site:	Hatch
Issue date:	01/06/1981
From:	Baxley S GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19351F344	List: 05000321/LER-1980-126, Forwards LER 80-126/03L-0 05000321/LER-1980-126-03, /03L-0:on 801226,dinitrogen Storage Tank Inventory Reduced to Below Tech Spec Level.Caused by Pressure Control Valve Sticking Causing Tank Relief Valve to Open.Pressure Control Loop Placed in Manual Control
References
LER-80-126-03L-01, LER-80-126-3L-1, NUDOCS 8101120303
Download: ML19351F351 (2)

LER-1980-126, /03L-0:on 801226,dinitrogen Storage Tank Inventory Reduced to Below Tech Spec Level.Caused by Pressure Control Valve Sticking Causing Tank Relief Valve to Open.Pressure Control Loop Placed in Manual Control

Event date:
Report date:
3211980126R03 - NRC Website

text

@. S. NUCLL AR HLbUL A 4 UR I LV-i'l>'w' RC F ORM 36G

!J LICENSEE EVENT REPORT r.77) s 6

CONTROL BLOCK: l l

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CON'T 80 74 75 REPORT DATE bd 69 EVENT OATE 60 61 DOCK ET NUYU E R EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h storage tank inventory was reduced to j

8 system, the N2 0121 lDuring normal operation of N2 This event less than the 2000 gals. required by Tech. Specs. section 3.7.A.6.b.

l 0,3 ; l There were no effects upon public i

50-321-80-120.

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( O i s i i health and safety due to this event.

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l A [1 l2 l0 lg 33 35 36 31 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS i

1 10 l l The pressure control valve was sticking causing the nitrogen tank relief v The pressure control j

The tank inventory was reduced below allowable limits.

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ble level.

g l loop was placed in manual control and nitrogen level restored to accepta 1

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.,,,, S. X. Baxley, Supt. of Operations 1

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l LER #:

50-321/1980-126 s

Licensee:

Georgia Power Company

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Facility Name:

Edwin I. Hatch Docket #:

50-321

Narrative

Report for LCR 50-321/1930-126 During normal reactor operation at 1345 CST on 12-26-80, the Unit I nitrogen storage tank was found to contain less thar. 2000 gallons.

Primary containment nitrogen system was in automatic operation and pressure control valve on nitrogen tank was sticking.

This caused the tank relief valve to operate and lowered tank level below mini-mum. The pressure control loop was placed in manual control and nitrogen added to tank. At 0915 CST on 12-27-80, the tank level was restored to acceptable limits.

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