JPN-87-004, Informs That Installation of New RWCU Containment Isolation Valve Rescheduled Until First Outage After 871231,due to Fact That Valve Purchased Has Unsuitable Design Characteristics for Use as Containment Isolation Valve

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Informs That Installation of New RWCU Containment Isolation Valve Rescheduled Until First Outage After 871231,due to Fact That Valve Purchased Has Unsuitable Design Characteristics for Use as Containment Isolation Valve
ML20210B539
Person / Time
Site: FitzPatrick Constellation icon.png
Issue date: 01/03/1987
From: Brons J
POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK
To:
NRC OFFICE OF ADMINISTRATION (ADM)
References
RTR-NUREG-0737, RTR-NUREG-737, TASK-2.E.4.2, TASK-TM JPN-87-004, JPN-87-4, NUDOCS 8702090183
Download: ML20210B539 (2)


Text

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January 3, 1987 JPN-87-004 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C. 20555

Subject:

James A. FitzPatrick Nuclear Power Plant Docket No. 50-333 Revised Schedule for Installation of New Reactor Water Cleanun System Containment Isolation Valves

References:

1. NYPA letter, J. P. Bayne to T. A. Ippolitto, dated January 7, 1982 (JPN-82-005) regarding containment isolation dependability.
2. NYPA letter, J. C. Brons to D. R. Muller, dated December 19, 1986 (JPN-86-061) regarding proposed technical specification changes for containment isolation valves.

Dear Sir:

1 In response to NUREG-0737 Iten. _I.E.4.2 - Containment Isolation Dependability, the Authority completed a l

comprehensive review of the containment isolation dependability of the FitzPatrick Nuclear Power Plant. A report summarizing the results was transmitted as part of Reference 1. In Reference 2, the Authority proposed l changes to the FitzPatrick Technical Specifications to add l several new containment isolation valves for the Reactor Water Cleanup System (RWCU), Traversing Incore Probe System, and Recirculation Pump Mini-Purge lines as a result of this NUREG-0737 item.

The Authority must reschedule the installation of the new RWCU containment isolation valve until the first outage of sufficient duration after December 31, 1987. This is due to the fact that the valve purchased has design characteristics which make it unsuitable for use as a containment isolation valve in this specific application.

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Although the valve is capable of closing to achieve containment isolation, under certain conditions a slight unseating could occur while in the closed (isolated) position. The Authority has decided not to install this valve.

The Authority has attempted to locate a replacement valve. Despite a survey of several nuclear power plants, a suitable replacement valve that was available, could not be readily located. Our intent is procure a new valve.

Valves are long lead items and cannot be obtained within the schedule to support installation during the current cycle 7/8 refueling outage. Consequently, installation has been postponed to the next outage of sufficient duration following receipt of the new valve.

Should you or your staff have any questions regarding this schedule change, please contact Mr. J. A. Gray, Jr. of my staff.

Very truly yours, John C. Brons Senior Vice President Nuclear Generation cc: U. S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 19406 Office of the Resident Inspector U. S. Nuclear Regulatory Commission P. O. Box 136 Lycoming, New York 13093

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