ML20010G096

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LER 81-020/03L-0: on 810728, During Procedure Returning Diesel Generator 1 to Svc After Flexible Fuel Line Leak, Control Air Line Fitting Failed Causing Generator to Shut Down. Caused by Broken Air Line Due to Crimped Ferrule
ML20010G096
Person / Time
Site: Cooper Entergy icon.png
Issue date: 08/25/1981
From: Whitman D
NEBRASKA PUBLIC POWER DISTRICT
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20010G091 List:
References
LER-81-020-03L, LER-81-20-3L, NUDOCS 8109150320
Download: ML20010G096 (1)


Text

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REPORT DATE 80 EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h 10 l 2 l l During pe Lance of Surveillance Procedure 6.3.12.1 to return #1 DG to service fol-1 0 3 l lowing a flexible fuel line leak, a control air line fitting failed causing #1 DG to l iOi4Il automatically shut down due to low control air pressure. Surveillance procedures per i 10 I s l I RTS 4.5.F.1 were already underway. This event is not repetitive. There were no ad- 1 I O 16 I l' verse effects on the oublic health and safety. I 10171 1 I 10181l I SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SU8 CODE COMPONENT CODE SU8 CODE SUSCODE O 9 l El Fj @ d@ J @ l E l N l G l I l N l E lh [_Z_j@N ] @

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44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h I i I O I l The control air line fitting failed because the air line broke inside the fittinn I i i l where the ferrule was crimped. Due to eneine vibration the fittine worked loose caus-1 I i 12 I l ing loss of control air pressure and auto shutdown of #1 DG. The fitting was immed- 1 liIall intelv reolaced: the DG was tested and returned to service. A vendor visit has been i l i 14 l l scheduled tn survov t.rhorhor ndditionn1 control air system deficiencies exist. l 7 8 9 80 STA S *.POWER OTHERSTATUS DISCOV RY DISCOVERY DESCRIPTION l1 l5I(_r) h l nl Ol Alh! NA l (_Bjhl Surveillance Testine l ACTIVITY CONTENT RRE ASED OF.RRE ASE LOCATION OF RREASE @

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