ML17290A175
| ML17290A175 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 04/02/1993 |
| From: | Virgilio M Office of Nuclear Reactor Regulation |
| To: | Sorensen G WASHINGTON PUBLIC POWER SUPPLY SYSTEM |
| References | |
| 93-6-001, 93-6-1, NUDOCS 9304120128 | |
| Download: ML17290A175 (7) | |
Text
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a 4 ah*ac qc UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555 0001 April 2, f993 Docket No. 50-397 NOED No. 93-6-001 Hr.
G.
C. Sorensen, Manager Regulatory Programs Washington Public Power Supply System 3000 George Washington Way P. 0.
Box 968
- Richland, Washington 99352
Dear Hr. Sorensen:
SUBJECT:
NOTICE OF ENFORCEMENT DISCRETION FOR WASHINGTON PUBLIC POWER SUPPLY SYSTEM REGARDING WASHINGTON NUCLEAR PROJECT NO.
2 By letter dated March 26,
- 1993, you requested a waiver of compliance from a portion of the Limiting Condition for Operation of Technical Specification 3.7.3 which requires that the Reactor Core Isolation Cooling System (RCIC) be able to automatically transfer its suction from the condensate storage tank to the suppression pool.
Under a revised policy statement published in the Federal Receister on Fiarch 17, 1993 (58 FR 14308), your request is being treated as a request for enforcement discretion for the U.S. Nuclear Regulatory Commission (NRC) to not enforce compliance with the required actions in Technical Specification 3.7.3 which would require that the reactor be shut down after 14 days with an inoperable RCIC system since the lack of automatic transfer capability renders the RCIC system inoperable.
In your letter of March 26, you identified a postulated single electrical failure of the Division 1
DC system which under certain circumstances could lead to leakage from the primary containment through the RCIC system.
Closing an isolation valve in the RCIC system also closes off this potential leakage
- path, but renders the RCIC system inoperable with respect to its ability to automatically take suction from the suppression pool.
You informed the NRC that WNP-2 would not be in compliance with the action required for an inoperable RCIC system at 2:30 pm PST on April 2, 1993, in that the allowed 14 day period would have expired, and requested NRC approval to operate with this isolation valve RCIC-V-31 closed until the refueling outage begins on or about Hay 3, 1993.
You provided as justification for continued operation that the alignment to the suppression pool could be performed manually if needed or if not appropriate that there are other systems available to provide core cooling for cold shutdown.
In addition, the supply circuit breaker to the motor for valve RCIC-V-31 will be opened to prevent inadvertent opening of the valve as compensatory action.
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C. Sorensen April 2, 1993 Based on our review of your request, we have concluded that this course of action involves minimum or no safety impact, and we are clearly satisfied that this exercise of enforcement discretion is warranted from a public health and safety perspective.
Therefore, it is our intention to exercise discretion not to enforce compliance with the action statement of Technical Specification 3.7.3 which otherwise would require a plant shutdown after 14 days because of RCIC inoperability as described above for the period from 2:30 pm PST April 2, 1993, until NRC takes action on the request for amendment on this same subject dated April 1, 1993.
This exercise of discretion is further conditioned on the commitment contained in this amendment request to not perform preventative maintenance or conduct other activity on the High Pressure Core Spray system that can be deferred until the refueling outage begins.
Sincerely, cc:
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C. Sorensen Based on our review of your request, we have concluded that this course of action involves minimum or no safety impact, and we are clearly satisfied that this exercise of enforcement discretion is warranted from a public health and safety perspective.
Therefore, it is our intention to exercise discretion not to enforce compliance with the action statement of Technical Specification 3.7.3 which otherwise would require a plant shutdown after 14 days because of RCIC inoperability as described above for the period from 2:30 pm PST April 2, 1993, until NRC takes action on the request for amendment on this same subject dated April 1, 1993.
This exercise of discretion is further conditioned on the commitment contained in this amendment request to not perform preventative maintenance or conduct other activity on the High Pressure Core Spray system that can be deferred until the refueling outage begins.
Sincerely, cc:
See next page Martin
. Virgilio, Assistant Director for Region IV/V Reactors Division of Reactor Projects III/IV/V Office of Nuclear Reactor Regulation
1
Hr.
G.
C. Sorensen WPPSS Nuclear Project No.
2 Washington Public Power Supply System (WNP-2)
CC:
Hr. J.
W. Baker WNP-2 Plant Hanager Washington Public Power Supply System P.O.
Box 968, HD 927H
- Richland, Washington 99352 G.
E.
C.
- DoUpe, Esq.
Washington Public Power Supply System 3000 George Washington Way P. 0.
Box 968, HD 396
- Richland, Washington 99352 Hr.
R.
G. Waldo, Chairman Energy Facility Site Evaluation Council Hail Stop PY-ll Olympia, Washington 98504 Hr. Alan G. Hosier, Licensing Hanager Washington Public Power Supply System P. 0.
Box 968, HD PE21
- Richland, Washington 99352 Hr. J.
V. Parrish, Assistant Hanaging Director for Operations Washington Public Power Supply System P. 0.
Box 968, HD 1023
- Richland, Washington 99352 Hr. James C. Gearhart, Director guality Assurance Washington Public Power Supply System P. 0.
Box 968, HD 280
- Richland, Washington 99352 Regional Administrator, Region V
U.S. Nuclear Regulatory Commission 1450 Haria Lane, Suite 210 Walnut Creek, California 94596 Chairman Benton County Board of Commissioners P. 0.
Box 190
- Prosser, Washington 99350-0190 Hr.
R.
C. Sorensen U. S. Nuclear Regulatory Commission P. 0.
Box 69
- Richland, Washington 99352 Nicholas S. Reynolds, Esq.
Winston
& Strawn 1400 L Street, N.W.
Washington, D.C.
20005-3502