ML20129G186

Responds to NRC Re Violations Noted in Insp Rept 50-382/95-23.C/As:commitment Change Was Discussed with Waterford 3 NRC Region IV Branch Chief During Conference Call on 960912

ML20129G186
Person / Time
Site:	Waterford
Issue date:	10/28/1996
From:	James Fisicaro ENTERGY OPERATIONS, INC.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
W3F1-96-0164, W3F1-96-164, NUDOCS 9610300034
Download: ML20129G186 (2)

Text

_ . . __ . _. . . _ . . . _ . _ . .

Ent gy perr.ti:ns, Inc.

f . Ktilona, LA 70066 Tel 504 739 6242 es J. Fisicaro "si%W

. W3F1-96-0164 A4.05 PR October 28,1996 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555

Subject:

Waterford 3 SES Docket No. 50-382 License No. NPF-38 NRC Inspection Report 95-23 Commitment Change Gentlemen:

Waterford 3 submitted the response to Notice of Violation EA 96-025/01013 per letter W3F1-96-0052, dated April 29,1996. In this letter it was stated that design change DC-3470 had been initiated to preclude excessive dynamic loads from air intrusion or column separation in the Auxiliary Component Cooling Water (ACCW) system, and that this design change would be ready to install by September 30,1996. This commitment, and proposed " ready-to-install" date, were originally discussed with the NRC during a March 5,1996 enforcement conference associated with the subject inspection report. The September 30 date was aggressively chosen at that time to possibly preclude running the ACCW pumps continuously through the winter months as was done in 1995. Since the proposed design change cannot be implemented at power, implementation of the design change was proposed for Refueling Outage 8 or a forced outage of sufficient duration. Waterford 3 has pursued DC-3470 aggressively, ensuring that the design accounts for the various possible mechanisms of air intrusion and column separation, while ensuring that the safety function of the ACCW system is maintained. The original design plan of installing a power-operated discharge valve for each ACCW pump alone was subsequently determined to not I fully address the potential for air intrusion and/or column separation. A combination of the power-operated valves and a keep-full system was determined to be the optimum solution. Due to the evolution of the design solution, the complexity of the -

jg l proposed modification, and the time required for the ordering and delivery of l components, Waterford 3 was unable to meet the original" ready-to-install" date of 9610300034 961028 .

PDR ADOCK 05000382 0 _.,

PDR

NRC Inspection Report 95-23 Commitment Change W3F1-96-0164 Page 2 October 28,1996 September 30. The interim action of running the ACCW pumps continuously will remain until the design change is implemented. The scheduled implementation date for DC-3470 remains as Refueling Outage 8 (scheduled for April,1997) or a prior forced shutdown of sufficient duration. This commitment change was discussed with

' the Waterford 3 NRC Region IV Branch Chief during a conference call on September 12,1996.

If you have any questions concerning this response, please contact me at (504) 739-6242 or Tim Gaudet at (504) 739-6666.

Very truly yours, 1

i i

J.J. Fisicaro Director Nuclear Safety JJF/DFlJtjs Attachment cc: L.J. Callan (NRC Region IV), C.P. Patel (NRC-NRR),

R.B. McGehee, N.S. Reynolds, NRC Resident inspectors Office