05000368/LER-1980-050, Updated LER 80-050/03X-1:on 800804 During Mode 1 Operation, While Testing Emergency Feedwater Pump (2P7A),overspeed Trip Occurred Rendering 2P7A Inoperable.Cause Not Specified, But Hydraulic Control Oil Sys Is Suspected.Vendor

Updated LER 80-050/03X-1:on 800804 During Mode 1 Operation, While Testing Emergency Feedwater Pump (2P7A),overspeed Trip Occurred Rendering 2P7A Inoperable.Cause Not Specified, But Hydraulic Control Oil Sys Is Suspected.Vendor Contacted

ML19331D643
Person / Time
Site:	Arkansas Nuclear
Issue date:	08/29/1980
From:	Pendergraft R ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19331D638	List: 05000368/LER-1980-050, Updated LER 80-050/03X-1:on 800804 During Mode 1 Operation, While Testing Emergency Feedwater Pump (2P7A),overspeed Trip Occurred Rendering 2P7A Inoperable.Cause Not Specified, But Hydraulic Control Oil Sys Is Suspected.Vendor
References
LER-80-050-03X, LER-80-50-3X, NUDOCS 8009030417
Download: ML19331D643 (1)

LER-1980-050, Updated LER 80-050/03X-1:on 800804 During Mode 1 Operation, While Testing Emergency Feedwater Pump (2P7A),overspeed Trip Occurred Rendering 2P7A Inoperable.Cause Not Specified, But Hydraulic Control Oil Sys Is Suspected.Vendor Contacted

Event date:
Report date:
3681980050R00 - NRC Website

text

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I Update Report - Previous Report Date 6/27/80 0

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60 ct DOCR ET NUMBE R 68 69 E V t NT Q.1 g r4 RE PORT D ATE As EVENT DESCRIPTION AND FAOB ABLE.CONSECUEN"E5 Oto F6TTI I During Mode 1 operation, while't'esting the Emergency Feedwater Pump io n i, (2P7A) an overspeed trip occurred rendering ZP7A inoperable.

The elec-1o u 1 I tric Emergency Feedwater pump and associated valves were verified oper-io isi i able. This occurrence is similar to LER's 50-368/79-055,79-072, 79-081,,

i o is i i 79-104,80-022, 80-030, and 80-036.

Reportable per Tech Spec. 6.9.1.9.b.,

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er CAUSE DESCRIPTION AND CORREC flVE ACTIONS h filoii Investigation did not reveal the cause for an overspeed trip.

The hy-li lii I draulic control oil system is suspected.

2P7A was successfully started i i,j2, I five times following the overspeed trip.

The vendor has been contacted i

til3i i and is working on this problem.

2P7A is being started every 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> to i

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