ML20247F314
| ML20247F314 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 03/28/1989 |
| From: | Diianni D Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20247F317 | List: |
| References | |
| NUDOCS 8904030405 | |
| Download: ML20247F314 (4) | |
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7590-01 5
UNITED STATES NUCLEAR REGULATORY COMMISSION NORTHERN STATES POWER COMPANY PRAIRIE ISLAND NUCLEAR GENERATING PLANT, UNIT NOS. 1 AND 2 DOCKET NOS. 50-282 AND 50-306 ENVIRONMENTAL ASSESSMENT AND FINDING OF NO SIGNIFICANT IMPACT The U. S. Nuclear Regulatory Commission (the Commission) is considering issuance of amendments to Facility Operating Licenses Nos. DPR-42 and DPR-60, issues to Northern States Power Company (the licensee), for operation of the Prairie Island Nuclear Generating Plant, Units Nos. I and 2, located in Goodhue County, Minnesota.
ENVIRONMENTAL ASSESSMENT Identification of Proposed Action:
The proposed amendments would revise the Technical Specifications (TSs) by deleting the steam /feedwater mismatch flow in coincident with the low feedwater flow reactor trip.
The proposed action is in accordance with the licensee's application for amendment dated July 18, 1988 as supplemented by letters dated September 15, 1988 and March 10, 1989.
The Need for the Proposed Action:
The proposed changes to the TSs is required in order to permit the installation of a new feedwater flow control system that will result in a significant improvement in plant reliability.
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-r Environmental Impacts of the Proposed Action:
The Commission has completed its evaluation of the proposed revision to the Technical Specifications. The proposed revision would eliminate the reactor trip dealing with low steam generator water level coincident with steam /feedwater mismatch flow.
This proposed change does not impact on the reactor licensed thermal power level.
Since the evaluation demonstrates that the plant does not exceed the acceptable thermal limits, the proposed change does not increase the probability or consequences of accidents, no changes are being made in the types of any effluents that may be released offsite, and there is no significant increase in the allowable individual or cumulative occupational radiation exposure.
Accordingly, the Commission concludes that this proposed action would result in no significant radiological environment impact.
With regard to potential nonradiological impacts, the proposed change to the TSs involves systems located within the restricted area as defined in 10 CFR Part 20.
It does not affect nonradioloical plant effluents and has no other environmental impact.
Therefore, the Commission concludes that there are no significant nonradiological environmental impacto 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 on February 8, 1989, (54 FR 6201).
No request for hearing or petition for leave to intervene was filed following this notice.
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. Alternative to the Proposed Action:
Since the Comission concluded that there are no significant environmental effects that would result from the proposed action, any alternatives with equal or greater environmental impacts need not be evaluated.
The principal alternative would be to deny the requested amendment. This would not reduce environmental impacts of plant operation and would result in reduced operational flexibility.
Alternative Use of Resources:
This action does not involve the use of any resources not previously considered in the Final Environmental Statements related to the Prairie Island Nuclear Generating Plant Unit Nos. I and 2 dated May 1973.
Agencies and Person Consulted:
The Commission's staff reviewed the licensee's request and did not consult other agencies or persons.
FINDING OF NO SIGNIFICANT IMPACT The Commission has determined not to prepare an environmental impact stateinent for the proposed license amendment.
Besed upon the foregoing environmental assessment, we conclude that the proposed action will not have a significant effect on the quality of the human l
environment.
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- t For further details with respect to this action, see the application for amendment dated July 18, 1988, and supplemented by letters dated September 15, 1988 and March 10, 1989, which is available for public inspection at the i
Commission's Public Document Room, 2120 L. Street, N.W., Washington, D.C., and the Technology and Science Department, Minneapolis Public Library, 300 Nicollet Mall, Minneapolis, Minnesota 55401.
Dated at Rockville, Maryland, this.28th day of March 1989.
FOR THE NUCLEAR REGULATORY COMMISSION
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Dominime C. Dilanni, Acting Director Project Directorate III-1 Division of Reactor Projects - III, IV, V
& Special Projects Office of Nuclear Reactor Regulation
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