05000245/LER-1996-020-02, Forwards LER 96-020-02,documenting Event Occurred at Unit 1 on 960322.Supplemental Rept Provides Update to Vol Calculations.Commitment B15674-3 Updated

Forwards LER 96-020-02,documenting Event Occurred at Unit 1 on 960322.Supplemental Rept Provides Update to Vol Calculations.Commitment B15674-3 Updated

ML20136J517
Person / Time
Site:	Millstone
Issue date:	03/17/1997
From:	Hinnenkamp P NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES SERVICE CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20136J521	List: 05000245/LER-1996-020-02, Forwards LER 96-020-02,documenting Event Occurred at Unit 1 on 960322.Supplemental Rept Provides Update to Vol Calculations.Commitment B15674-3 Updated
References
B16212, NUDOCS 9703200128
Download: ML20136J517 (2)

LER-1996-020, Forwards LER 96-020-02,documenting Event Occurred at Unit 1 on 960322.Supplemental Rept Provides Update to Vol Calculations.Commitment B15674-3 Updated

Event date:
Report date:
Reporting criterion:	10 CFR 50.73(a)(2)(i) 10 CFR 50.73(a)(2)(ii)
2451996020R02 - NRC Website

text

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N:rthenst moe ornm. n,e rerry na., ne,rora, er p

Utilities System go 3,,128 Weierford, CF 06385-0128 i

(8t4) 447-1791 March 17,1997 Docket No. 50-245 B16212 Re: 10CFR50.73(a)(2)(i) 10CFR50.73(a)(2)(ii) l U.S. Nuclear Regulatory Commission Document Control Desk i

Washington, DC 20555 This letter forwards supplemental Licensee Event Report (LER) 96-020-02, documenting an event that occurred at Millstone Nuclear Power Station,' Unit No. I on March 22,~ 1996. This LER is submitted pursuant to 10CFR50.73(a)(2)(i) and 10CFR50.73(a)(2)(ii).

The supplemental report 96-020-01 that was submitted on December 16,1996, indicated that an additional supplement was intended. However, this was actually in error since no additional supplement was intended, In order to maintain a " clean docket," this supplemental report is bemg j

submitted.

This supplemental report provides an update to the volume calculatiov Accordingly, Commitment No. B15674-3 has been updated. Also, the Commitment No. B15674-4 has been i

supplemented.

The following are Northeast Nuclear Energy Company's (NNECO's) commitments made within this letter. All other statements made within this letter are for information only.

B15674-1 NNECO commits to revise design calculations to correctly identify the usable volume of the condensate storage tank (CST). This will be completed prior to startup for operating cycle 16.

i B15674-2 NNECO commits to perform a review of the calculations of the rusable volume of all safety-related tanks. This review will be completed prior to startup for operating cycle 16.

1 B15674-3 NNECO commits to revise administrative procedures to ensure at least 301,500 y

20003,1 gau ns is avaHable in the CST at aH dmes feedwater coolant injection inequired to y be operable, prior to startup for operating cycle 16.

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U.S. Nuclear Regulatory Commission B16212\\Page 2 of 2 B15674-4 NNECO commits to provide procedural guidance, as the long-term corrective action, for maintaining appropriate levels in the CST while the torus is drained.

NNECO will complete this prior to shutdown for refueling outage 16.

Administrative controls will remain in place to prevent torus draining, until such procedural controls for emergency core cooling system flow throttling are put in place.

Very truly yours, NORTHEAST NUCLEAR ENERGY COMPANY C

P. D. Hinnenkamp' V

~

Director, Unit Operations Attachment: LER 96-020-02 cc:

Dr. W. D. Travers, Director, Special Projects H. J. Miller, Region I Administrator S. Dembek, NRC Project Manager, Millstone Unit No.1 T. A. Eastick, Senior Resident Inspector, Millstone Unit No. I 1

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