ML20151E134
| ML20151E134 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 07/07/1988 |
| From: | Perkins K Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20151E137 | List: |
| References | |
| TAC-66699, NUDOCS 8807250385 | |
| Download: ML20151E134 (4) | |
Text
N 7590-01 U.S. NUCLEAR REGULATORY COMMISSION TOLED0 EDIS0N COMPANY THE CLEVELAND ELECTRIC ILLUMINATING COMPANY DOCKET N0. 50-346 ENVIRONMENTAL ASSESSMENT AND FINDING OF NO SIGNIFICANT IMPACT The U. S. Nuclear Regulatory Commission (the Connission) is considering issuance of an amendment to Facility Operating License No. NPF-3, issued to Toledo Edison Company and The Cleveland Electric Illuminating Company (the licensees), for operation of the Davis-Besse Nuclear Power Station, Unit No. 1 located in Ottawa County, Ohio.
ENVIRONMENTAL ASSESSMENT Identification of Proposed Action The proposed amendment would revise the provisions in the Davis-Besse Nuclear Power Station, Unit No. 1 Technical Specifications (TS's) relating to the Reactor Coolant System (RCS) pressure-temperature operating limits and the Reactor Yessel Material Surveillance Program in accordance with Toledo Edison Company's application dated March 30, 1988.
Specifically, the proposed amendment would:
(1) reflect f.he chariges in the RCS pressure-temperature operating limits I
during heatup, cooldown and inservice leak end hydrostatic tests to accommo-date operation to 10 Effective Full Fower Years (EFPY),
(2) reflect changes to the Low Temperature Overpressurization (LTOP) mitig tion measures to ensure continued protection against LTOP events to 10 EFPY, and l
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s (3) delete specific details regarding surveillance requirements and surveillance capsule withdrawal schedule of the Reactor Ye:sel Material Surveillance Program in favor of referencing a previously NRC-epproved document (BAW-1543A) for these program details.
The Need for the Proposed Action The proposed changes are needed to support station operation beyond S EFPY by imposing new RCS pressure-temperature limitations and LTOP mitigation measures.
Environmental Impacts of the Proposed Action The Davis-Besse reactor coolant system consists of mechanical piping and motive force to circulate reactor coolant between the reactor, where energy is added to the coolant, and the steam generators, where energy is removed from the coolant. The reactor vessel is an integral part of the RCS, and in order for the coolant to reach the core, the integrity of the reactor vessel must be maintained. The proposed changes will revise the pressure-temperature limits to reflect actual changes in the reactor vessel material due to r;eutron irradia-tion and will assure that the reactor is operated conservatively. The changes to the Reactor Vessel Material Surveillance Program are consistent with previous staff determination and encJre reactor Vessel properties are periodically monitored l
to ascertain potential e.mbrittlement effects.
The Comission has evaluated the enviro. mental impact of the proposed amendment and has determined that post-accident radiological releases would not be greater than previously determined.
Neither dcas the proposed amend-ment otherwise affect radiological plant effluents during nonnal operation.
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- t. Therefore, the Commission concludes that there are no significant radiological environmental impacts associated with this proposed amendment.
With regard to potential nonradiological impacts, the proposed amendment
.invo ves c anges-n t e operat ng proca ures for station heatup, cooldown and l
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d inservice leak and hydrostatic tests, and in the evaluation of the reactor vessel material properties.
It does not affect nonradiological plant effluents and has no other environmental impact. Therefore, the Comission concludes that there are no significant nonradiological environmantal impacts associated with the proposed amendment.
The Notice of Consideration of Issuance of Amendment and Opportunity for Hearing in connection with this action was published in the Federal Register onMay4,1988(53FR15932). No request for hearing or petition for leave to intervene was filed following this notice.
Alternatives to the Proposed Action Since the Comission has concluded that'the environmental effects of the proposed action are not significant, any alternative with equal or greater environmental impacts need not be evaluated.
The principal alternative would be to deny the requested amendment. This would not reduce the environmental impacts attributable to this facility and would result in operation being terminated at the end of 5 EFPY.
Alternative Use of Resources This action does not involve the use of resources not previously considered in-the Final Environmental Statement related to operation of the Davis-Besse facility.
Agencies and Persons Consulted The Comission's staff reviewed the licensee's request and did not consult other agencies or persons.
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,n FIhDING OF N0 SIGNIFICANT IMPACT The Commission has determined not to prepare an environmental impact statement for the proposed amendment.
Based upon the foregoing environmental assessment, we ;onclude that the proposed action will not have a significant effect on the quality of the human environment.
For further details with respect to this action, see the application for amendment dated March 30, 1988, which is available for public ins;,ection at the Commission's Public Document Room, 1717 H Street, N.W., Washington D.C.,
and at the University of Toledo Library, Documents Department, 2801 Bancroft Avenue, Toledo, Ohio 43606.
Dated at Rockville, Maryland, this 7th day of July, 1988.
FOR THE NUCLEAR REGULATORY COMMISSION w%
W Kenneth E. Perkins, Director Project Directorate III-3 Division of Reacter Projects - III, IV, Y and Special Projects l
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