05000285/LER-1992-031, Updates Status of Corrective Action in LER 92-031,Rev 1,dtd 930226 Re Installation of Fire Pump Backpressure Control Valve.Schedule for Resolution of Item Revised from 930901 to 940131

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Updates Status of Corrective Action in LER 92-031,Rev 1,dtd 930226 Re Installation of Fire Pump Backpressure Control Valve.Schedule for Resolution of Item Revised from 930901 to 940131
ML20056H163
Person / Time
Site: Fort Calhoun Omaha Public Power District icon.png
Issue date: 09/01/1993
From: Gates W
OMAHA PUBLIC POWER DISTRICT
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
LIC-93-0235, LIC-93-235, NUDOCS 9309080318
Download: ML20056H163 (2)


LER-2092-031, Updates Status of Corrective Action in LER 92-031,Rev 1,dtd 930226 Re Installation of Fire Pump Backpressure Control Valve.Schedule for Resolution of Item Revised from 930901 to 940131
Event date:
Report date:
2852092031R00 - NRC Website

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Omaha Public Power District 444 South 16th Street Mall Omaha, Nebraska 68102-2247 402/636-2000 September 1, 1993 LIC-93-0235 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Station PI-137 Washington, DC 20555

References:

1. Docket No. 50-285 2.

LER 92-031, Revision 00, from OPPD (W. G. Gates) to NRC

3. (Document Control Desk) dated Januar LER 92-031, Revision 01, from OPPD W. (y 4,G.1993 Gates (LIC-92-0270) to NRC (Document Control Desk) dated Fabruary 26,1993)(LIC-93-0053)

Gentlemen:

Subject:

Pump Backpressure Control ValveUpdated Status of Corrective Action I The purpose Reference 3. of this letter is to update the status of a corrective action in in response to the event reported in Reference 2.The subject corrective action w electric motor driven fire pump (FP-1A .need for the pump recirculation valve corrective action was included in Refer)ence 3:Following the review, the following that a backpressure control valve be installed in addition to eliminate the dead heading of the FP-FP-1A flow for suppression purposes.1A pump. This valve would provide the to availability of materials. facility change is scheduled for completion b Action was initiated to implement this item, however, following installation of the backpressure performance control valve, it was determined that sand impaired the of the valve.

As a result, the original configuration was restored.

A different type of control valve was then procered and installed, but a problem was identified during post-installation testing performed on August 31, 1993 .

resolution January 31, 1994.of this item has been revised from September 1, 1993 l

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l U. S. Suclear Regulatory Commission l LIC-93-0235

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P' age Two If you should have any questions, please contact me.

l Sincerely, l

W. 5.  !

W. G. Gates ,

Vice President l WGG/jrg ,

i l c: LeBoeuf, Lamb, Leiby & MacRae  !

l J. L. Milhoan, NRC Regional Administrator, Region IV '

l S. D. Bloom, NRC Project Manager R. P. Mullikin, NRC Senior Resident Inspector INP0 Records Center l

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