ML17284A613
| ML17284A613 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 11/03/1988 |
| From: | Samworth R Office of Nuclear Reactor Regulation |
| To: | Sorensen G WASHINGTON PUBLIC POWER SUPPLY SYSTEM |
| Shared Package | |
| ML17284A614 | List: |
| References | |
| TAC-55579, NUDOCS 8811230215 | |
| Download: ML17284A613 (6) | |
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81gg03 PDR ADoci 05000397 PDC UNITEDSTATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 November 3, 1988 Docket No.:
50-397 Mr. G. C. Sorensen, Manager Regulatory Programs Washington Public Power Supply System P.O.
Box 968 3000 George Washington Way Richland, Washington 99352
Dear Mr. Sorensen:
SUBJECT:
SETPOINT METHODOLOGY FOR GE SUPPLIED PROTECTION SYSTEM INSTRUMENTATION (TAC NO. 55579)
By letter dated September 7,
1983 (A. Schwencer to D. Mazur/Ferguson)
NRC advised that additional information would be required to demonstrate the acceptability of methodology used to establish reactor trip setpoints.
By letter dated April 2, 1985 (A. Schwencer to G. C. Sorensen) we reiterated our need for the information.
By letter dated May 6, 1985 (G02-85-238) you provided a detailed discussion of your methodology for establishing the trip setpoints for General Electric supplied protection system instrumentation.
We have limited our review of your submittal to the instrumentation actuation systems that are required to operate at or near the onset of a loss-of-coolant-accident (LOCA) event and listed in the WNP-2 technical specifications.
Our review did not extend to those instrumentation systems that are required to operate during the course of a LOCA and which would be impacted by the harsh environmental effects of the LOCA event.
Based on our review we have concluded that the setpoint methodology is accept-able.
However in making this finding we note that the burden is upon you to demonstrate by analysis that each instrument to which you apply the methodology is not needed durin the LOCA.
Documentation of these demonstrations must be maintained and ma e available for staff review and examination on request.
WPPSS has committed to undertake a margin reevaluation program to help establish the need for revisions to setpoints for those instruments which are required to operate during the course of a LOCA event.
Our acceptance of the
November 3, 1988 setpoint methodology is also conditioned upon your commitment to submit a report containing the results of this reevaluation effort for NRC review and appropriate action.
Enclosed is a safety evaluation providing details of our review.
Sincerely,
Enclosure:
As stated Robert 8. Samworth, Senior Project Manager Project Directorate V
Division of Reactor Projects - III, IV, V and Special Projects Office of Nuclear Reactor Regulation cc:
See next page
November 3, 1988 setpoint methodology is also conditioned upon your commitment to submit a report containing the results of this reevaluation effort for NRC review and appropriate action.
Enclosed is a safety evaluation providing details of our review.
Sincerely, original signed by
Enclosure:
As stated cc:
See next page DISTRIBUTION NRC LPDRs PD5 Reading MVirgilio JLee RSamworth OGC-llFl EJordan BGrimes ACRS (10)
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- VThomas, EJCB Robert B. Samworth, Senior Project Manager Project Directorate V
Division of Reactor Projects - III, IV, V and Special Projects Office of Nuclear Reactor Regulation DRSP/PD5 R
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. Mr..G. C. Sorensen, Manager Washington Public Power Supply System WPPSS Nuclear Project No.
2 (WNP-2)
CC:
Nicholas S. Reynolds, Esq.
- Bishop, Cook, Purcel1
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II Reynolds 1400 L Street NW Washington, D.C.
20005-3502 Mr. G. E. Doupe, Esquire Washington Public Power Supply System P. 0.
Box 968 3000 George Washington Way Richland, Washington 99532 Hr. Curtis Eschels, Chairman Energy Facility Site Evaluation Council Hail Stop PY-11 Olympia, Washington 98504 Mr. Alan G. Hosier, Licensing Manager Washington Public Power Supply System P. 0.
Box 968, HD 956B Richland, Washington 99352 Mr. A. Lee Oxsen Assistant Managing Director for Operations Washington Public Power Supply System P. 0.
Box 968, MD 1023
- Richland, WA 99352 Mr. Gary D. Bouchey, Director Licensing and Assurance Washington Public Power Supply System P. 0.
Box 968, MD 280 Richland, Washington 99352 Mr. C.
M. Powers WNP-2 Plant Manager Washington Public Power Supply System P. 0.
Box HD 927M Richland, Washington 99352 Regional Administrator, Region V
U.S. Nuclear Regulatory Commission 1450 Maria Lane, Suite 210 Walnut Creek, California 94596 Chairman Benton County Board of Commissioners
- Prosser, Washington 99350 Mr. Christian Bosted U. S. Nuclear Regulatory Commission P. 0.
Box 69 Richland, Washington 99352