ML20247A969
| ML20247A969 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 08/22/1989 |
| From: | Hebdon F Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20247A973 | List: |
| References | |
| NUDOCS 8909120283 | |
| Download: ML20247A969 (3) | |
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7590-01 UNITED STATES NUCLEAR REGULATORY COMMISSION HOUSTON LIGHTING & POWER COMPANY, ET AL.
SOUTH TEXAS PROJECT, UNIT 1 DOCKET NO. 50-498 ENVIRCfEENTAL ASSESSMENT AND FINDING 0F N0 SIGNIFICANT II; PACT I
The U. S. Nuclear Regulatory Connission '(the Commission) is considering the issuance of an amenoment to Facility Operating License No. NPF-76, issued to Hcusten Lighting & Power Company, et al., (the licensee) for the South Texas Project, Unit 1, located at the licensee's site in Mategorda County, Texas.
ENVIRONMENTAL ASSESSMENT Identification of Proposed Action:
The proposed anienament would make changes to the plant and the Final Safety Analysis Peport regarding design changes to the Unit I core. The changes are the same as those resulting from a similar review for Unit 2, thus giving both plants a common licensing basis.
The proposed action is in accordance with the liter.see's application for arendment dated June 1, 1989.
The Need for the Preposed Action:
The proposed changes are necessary to describe the core and accompanying accident analysis for Cycle 2 for the South Texes Project, Unit 1 (STP-1).
Environmental Impacts of the Proposed Action-An assessment was made of the potential impact of the change on the radiological assessnent of the design basis accidents (DBA's). The DBA which e909120283 e90822 ADOCK0500g8 PDR P
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was tr. cst affected by the changes was the locked rotor.. The thyroid dose changed from 0.73 rem to 1.04 rem at the Exclusion Zone Bountiary ( ZB) and 1.07 rem to 1.53 rem in the Low Population Zone (LPZ). Whole body doses changed from 0.029' rem to 0.038 rem at the EZB and from 0.018 rem to 0.022 in the LPZ. These changes are small and well within the 10 CFR Part 100 limits of 25 rem for the EZB and 300 rem within the LPZ. Accordingly, the Commission concludes that this proposed action would result in no significant radiological environmental impact. With regard to potential ner-radiological impacts, the proposed change involves systems located within the restricted area as defined in 10 CFR Part 20.
It coes not affect non-radiological plant effluents and has no other environmental impact. Therefore, the Commission concludes that there are no significant non-radiological environmental 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 FEGISTEF, on June 13,1989 (54 FR 25184). No request for hearing or petition for leave to intervene was filed following this notice.
Alternatives to the Proposed Action:
Since the Commission ccncluded that there are no significant environmental effects that would result from the proposed action, any alternative with equal or greater environmental impacts need not be evaluated.
The principal alternative would be to deny the requested amendtrent. This would not reduce environmental impacts of plant operation and would result in reduced operational flexibility.
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' Alternative Use of Resonyces:
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This action does not involve the use of any resources'not previously
. considered in the Final Environmental Statement (NUREG-171, August 1986)' for the South Texas Project, Units l'and 2.
Agencies and Persons Consulted:
e The'NRC. staff reviewed the' licensee's request and did not consult other-agencies or persons.
, FINDING 0F NO SIGNIFICANT IMPACT-
'The Commission has determined not to prepare an environmental impact statement for the propose'd license amendment..
Based upon the foregoing environmental assessment, we: conclude that the proposed action.will.not have a significant effect on the quality.of the human-environment.
For-information concerning this action, see the application of amendment
. dated. June 1, 1989, which is available for public inspection at the Commission's Public Document Room, 2120 L Street, N.W., Washington, D.C., and at 3
the Wharton County Junior College, J.M. Hodges Learning Center, 911 Boling
' Highway, Wharton, Texas 7746 and Austin Public Library, 810 Guadalupe Street, Austin, Texas 78701.
- Dat'ed.at Rockville, Maryland this 22nd day of August 1989.
FOR THE NOCLEAR REGULATORY COMMISSION bM))wl h-Frederick J. Hebo.n, Director Project Directorate IV Divison of Reactor Projects - III, i-IV, V and Special Projects Office of Nuclear Reactor Regulation
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