05000336/LER-1995-019, Forwards LER 95-019-02,documenting Event That Occurred at Millstone Nuclear Power Station Unit 2 on 950514.Util Commitments Made within Ltr,Listed

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Forwards LER 95-019-02,documenting Event That Occurred at Millstone Nuclear Power Station Unit 2 on 950514.Util Commitments Made within Ltr,Listed
ML20134E890
Person / Time
Site: Millstone Dominion icon.png
Issue date: 01/31/1997
From: Funderburk C
NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES SERVICE CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20134E893 List:
References
B16193, NUDOCS 9702070140
Download: ML20134E890 (2)


LER-2095-019, Forwards LER 95-019-02,documenting Event That Occurred at Millstone Nuclear Power Station Unit 2 on 950514.Util Commitments Made within Ltr,Listed
Event date:
Report date:
3362095019R00 - NRC Website

text

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Northeast m.m mrm . m,pe rerry lia., w.terfora, er  ;

Utilities System 3,n m ,128 Waterford, CT 0638.%0128 i (203) 447-1791 l

January 31,1997 )

t Docket No. 50-336 '

B16193 l

1 Re: 10 CFR 50.73(a)(2)(i) l i

U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 4

This letter forwards Licensee Event Report (LER) 95-019-02, documenting an event

that occurred at Millstone Nuclear Power Station, Unit No. 2 on May 14,1995. This 3

LER is being submitted pursuant to 10 CFR 50.73(a)(2)(i). This LER supplement J provides an update on investigation and corrective actions underway for this event.

The following are NNECO's commitments made within this letter. All other statements made within this letter are for information only. j B16193-01: An analysis of tne suction piping from the RWST to the high pressure and low piessure safety injection pumps and the containment spray pumps is being performed to quantify water hammer loads generated due to various piping void assumptions. Data obtained from this analysis will be utilized in the pipe stress and support analyses that will fully address the consequences of the postulated events to establish a correlation between the analytical and field inspection findings. These ,

analyses will be completed prior to restart of the unit from the current  ;

outage.

B16193-02: Actions will be taken to ensure that the RWST piping is returned to full design compliance. Repairs and/or modifications will be completed to

resolve the discrepancies identified with the piping, supports, and

, anchors. Documentation inconsistencies will be resolved as part of this 4

effort. Analyses will be performed to ensure that the as-buiit configuration of the piping and supports can withstand the design stresses for the system. These actions will be completed prior to restart of the unit from the current outage.

l 070009702070140 970131 "_

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U. S. Nuclear Regulatory Commission B16193/Page 2 i  ;

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B16193-03: An investigation is currently in progress to evaluate the results of the previous IEB 79-02 and 79-14 reviews with respect to the support discrepancies identified in this LER. Based on the results of this J investigation, other corrective actions will be initiated as appropriate.

4 Very truly yours, i

) NORTHEAST NUCLEAR ENERGY COMPANY  !

FOR: J. A. Price Director - Millstone Unit No. 2 BY: C. LTFunderburk Manager of Work Planning & Maintenance

Attachment:

LER 95-019-02 cc: W. D. Travers, Director of Special Projects H. J. Miller, Region I Administrator D. P. Beaulieu, Senior Resident inspector (Acting), Millstone Unit No. 2 D. G. Mcdonald, Jr., NRC Project Manager, Millstone Unit No. 2