05000423/LER-1996-035, Forwards LER 96-035-00.MOV Calculations Will Be Revised Based on Bounding Application Factor/Pullout Efficiency or MOV Specific Performance Characteristics Prior to start-up from Current Outage

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Forwards LER 96-035-00.MOV Calculations Will Be Revised Based on Bounding Application Factor/Pullout Efficiency or MOV Specific Performance Characteristics Prior to start-up from Current Outage
ML20129A110
Person / Time
Site: Millstone Dominion icon.png
Issue date: 10/18/1996
From: Brothers M
NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES SERVICE CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20129A114 List:
References
B15942, NUDOCS 9610220031
Download: ML20129A110 (2)


LER-2096-035, Forwards LER 96-035-00.MOV Calculations Will Be Revised Based on Bounding Application Factor/Pullout Efficiency or MOV Specific Performance Characteristics Prior to start-up from Current Outage
Event date:
Report date:
4232096035R00 - NRC Website

text

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g g g gg Millstene Officese Rope Ferry Rd., Waterford, CT 7 Utilities System e.o. nox In Waterford, CT 06E-0128 (203) 447-1791 October 18,1996 Docket No. 50-423 B16942 Re: 10CFR 50.73(a)(2)(ii) i U. S. Nuclear Regulatory Commission Document Control Desk Washingten, DC 20555 i This letter forwards Licensee Event Report 96-035-00, documenting a condition that was determined at Millstone Unit No. 3 on September 20,1996. This LER is i submitted pursuant to 10CFP 50.73(a)(2)(ii).

The following are NNECO's commitments made within this letter:

B15942-01: The MOV actuator efficiency and motor capability for each valve will be determined by performing on site testing, or, by utilizing bounding performance characteristics (application factor and efficiencies) from industry testing prior to start-up from the current outage.

C'. 5942-02: The MOV calculations will be revised based on bounding application factor / pullout efficiency or MOV specific performance characteristics prior to start-up from the current outage.

B15942-03: The actuator torque switches will be reset based on the newly calculated setpoints prior to start-up from the current outage.

915942-04: MOVs will be modified as required to ensure adequate capability of the MOV to stroke during their credited design basis event (s).

I These modifications will bs r,cmoleteri prior to start-up from the current outage.

Very truly yours, I

NORTHEAST NUCLEAR ENERGY COMPANY l 0100GG MgBrojk6 rs

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Unit Director, Millst nit No. 3 Of0422 9 REV. I 95 9610220031 961018 F PDR ADOCK 05000423 S PDR [

i U.S. Nuciscr Regulatory Cornmission '

B15342\Page 2 i ,

Attachment:

LER 96-035-00 cc: H. J Miller, Region I Administrator i A. C. Cerne, Senior Resident inspector, Millstone Unit No. 3 V. L. Rooney, NRC Project Manager, Millstone Unit No. 3 ,

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