05000369/LER-1981-114-03, /03L-0:on 810708,turbine Driven Auxiliary Feedwater Pump Declared Inoperable Due to Slow Operating Time for Two Steam Supply Valves.Caused by Water Hammer Problem.Sys Redesigned & Valves Retested

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/03L-0:on 810708,turbine Driven Auxiliary Feedwater Pump Declared Inoperable Due to Slow Operating Time for Two Steam Supply Valves.Caused by Water Hammer Problem.Sys Redesigned & Valves Retested
ML20010B009
Person / Time
Site: McGuire 
Issue date: 08/07/1981
From: Nardoci P
DUKE POWER CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20010B006 List:
References
LER-81-114-03L, LER-81-114-3L, NUDOCS 8108130214
Download: ML20010B009 (1)


LER-1981-114, /03L-0:on 810708,turbine Driven Auxiliary Feedwater Pump Declared Inoperable Due to Slow Operating Time for Two Steam Supply Valves.Caused by Water Hammer Problem.Sys Redesigned & Valves Retested
Event date:
Report date:
3691981114R03 - NRC Website

text

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i o,: # IWhile in Mode 3, periodic testing of two steam supply valves determined that l

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lo846Inuxiliarv feedwater pump (AFP) was declared inoperable nursuant to Technical f

io,sil Specification 3.7.1.2 which is reportable per Technical Specification 6.9.1.13(b).

I a is i IFven thoueh there were no incidents reoutrine the use of the AFP's, in additiott io,7gIto both motor driven AFP's availability, the valves did eventually open makingg the turbine driven AFP available also. Thus, the health and safety of the public t o t e i Iwere unaf fected.

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li t o i l A system redesign to correct a water hammer problem included replacing the i,,,,; orifice which bleeds off air pressure from each valve with a smaller one,

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