ML20245B059
| ML20245B059 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 06/16/1989 |
| From: | Colburn T Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20245B062 | List: |
| References | |
| NUDOCS 8906220368 | |
| Download: ML20245B059 (4) | |
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7590-01 UNITED STATES. NUCLEAR. REGULATORY.COMNISSION UNION. ELECTRIC. COMPANY DOCKET.NO. 50-483 ENVIRONMENTAL ASSESSMENT.AND. FINDING OF
_NO,SIGNIFICANT. IMPACT n.e U. S. Nuclear Regulatory Commission (the Commission) is considering issuance of an amendment to Facility Operating License No. NPF-30, issued to Union Electric Company (the licensee), for operation of the Callaway Plant, Located in Callaway County, Mssouri ENVIRONMENTAL. ASSESSMENT Identification.of Proposed. Action l
The proposed amendment would increase'the allowed flow variations of-the control room emergency ventilation system and reduce the control room pressurization requirement from 1/4 inch water gauge to 1/8 inch water gauge.
1 The proposed action is in accorda ~s with the licensee's application for amendment dated March 25, 1988, as supplemented by letters dated December 28, 1988 and March 31, 1989.
The.Need for.the. Proposed. Action I
The proposed change to the technical specifications (TS). is necessary because of difficulties identified when verifying the capability of the emergency ventilation system to comply with the flow tolerances and pressurization level indicated in TS 3/4.7.6. This condition is caused by j
changes in filter loading as particulate accumulates over time.
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~ Environmental Impacts of.the. Proposed Action, l
The Commission has completed its evaluation of the proposed revision to TS and finds that the resulting value of the iodine protection factor (IPF) for l
use in the radiological dose calculations for control room personnel is not
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decreased significantly with the proposed increase in flow variations and lower control room pressurization in comparison to the IPF without these changes.
The staff has also calculated the potential radiation doses to control room j
operators following a design basis accident and finds them to be within the acceptance criteria of General Design Criterion 19 and Standard Review Plan Section 6.4.
Therefore, the proposed changes do not increase the probability l
or consequences of accidents, no changes are being made in the types of any i
l effluents that may be released offsite, and there is no significant increase in the allowable individual or cumulative occupational radiation exposure.
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Accordingly, the Commission concludes that this proposed action would result in J
ne significant radiological environmental impact.
The Notice of Consideration of Issuance of Amendment and Opportunity for Prior Hearing in connection with this action was published in the Federal Register on May 20,1988(53FR18187). No request for hearing or petition for leave to intervene was filed following this notice.
With regard to potential nonradiological impacts, the proposed change to i
tne TS involves systems located within the restricted area as defined by 10 CFR Part 20.
It does not affect nonradiological plant effluents and has no other
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.. environmental impact. Therefore, the Commission concludes that there are no significant nonradiological environmental impacts associated with the proposed l
amendment.
l Alternative to the. Proposed Action Since the Commission 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 i
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This action does not involve the use of any resources not previously considered in the Final Environmental Statement for the Callaway Plant dated January 1982.
Agencies and Persons. Consulted The NRC staff reviewed the licensee's request and did not consult other agencies or persons.
l FINDI NG. 0 F. NO. S IGNI FICANT. lMPACT The Comission has determined not to prepare an environmental impact statement for the proposed 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 I
environment, l
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i For further details with respect to this action, see the application for I
amendment dated March 25, 1988 and supplements dated December 28, 1988 and March 31, 1989, which are available for public inspection at the Commission's 1
Public Document Room, 2120 L Street, N.W., Washington, D.C. and at the Callaway County Public Library, 710 Court Street, Fulton, Missouri 65251 and the John M.
Olin Library, Washington University, Skinker and Lindell Boulevards, St. Louis, Missouri 63130.
Dated at Rockville, Maryland, this.16th day of June 1989.
FOR THE NUCLEAR REGULATORY COMMISSION h-Timothy G. Col urn, Acting Director
~ Project Directorate III-3 Division of Reactor Projects - III, IV, V and Special Projects Office of Nuclear Reactor Regulation i
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