[Federal Register Volume 67, Number 71 (Friday, April 12, 2002)]
[Notices]
[Page 18044]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 02-8865]



[[Page 18044]]

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NUCLEAR REGULATORY COMMISSION

[Docket No. 50-336]


Dominion Nuclear Connecticut, Inc.; Millstone Nuclear Power 
Station, Unit No. 2, Environmental Assessment and Finding of No 
Significant Impact

    The U.S. Nuclear Regulatory Commission (NRC) is considering 
issuance of an amendment to Facility Operating License No. DPR-65 
issued to Dominion Nuclear Connecticut, Inc. (the licensee), for 
operation of the Millstone Nuclear Power Station, Unit No. 2 (MP2), 
located in Waterford, Connecticut. Therefore, as required by 10 CFR 
51.21, the NRC is issuing this environmental assessment and finding of 
no significant impact.

Environmental Assessment

Identification of the Proposed Action

    The proposed action would revise the MP2 Final Safety Analysis 
Report (FSAR), Chapter 14, description of the Steam Generator Tube 
Rupture (SGTR) event. The changes are the result of incorporating a 
postulated loss of offsite power (LOOP) into the event analyses as well 
as revised assumptions and analysis methodology.
    The proposed action is in accordance with the licensee's 
application dated December 21, 2000, as supplemented by letter dated 
June 29, 2001.

The Need for the Proposed Action

    General Design Criterion (GDC) 17, ``Electric Power Systems,'' of 
Appendix A to 10 CFR part 50, ``General Design Criteria for Nuclear 
Power Plants'' requires that fuel design limits and design conditions 
of the reactor coolant pressure boundary are not exceeded as a result 
of anticipated operational occurrences including a LOOP and that the 
core is cooled and containment integrity and other vital functions are 
maintained in the event of postulated accidents including an SGTR. 
Currently, the description of an SGTR in the MP2 FSAR does not include 
a concurrent LOOP. Therefore, the licensee submitted a revision to the 
MP2 FSAR to include an SGTR concurrent with a LOOP.

Environmental Impacts of the Proposed Action

    The NRC has completed its evaluation of the proposed action and 
concludes that issuance of the proposed amendment would not have a 
significant environmental impact. The proposed changes to the FSAR 
provide documentation of a combination of events not previously 
included in the FSAR. The likelihood of an SGTR concurrent with a LOOP, 
along with the radiological consequences, are independent of the 
proposed action to revise the FSAR to include this combination of 
events. The analysis shows that the radiological consequences of an 
SGTR concurrent with a LOOP are within the limits of 10 CFR Part 100, 
Reactor Site Criteria, and GDC-19, Control Room.
    The proposed action will not significantly increase the probability 
or consequences of accidents, no changes are being made in the types of 
effluents that may be released off site, and there is no significant 
increase in occupational or public radiation exposure. Therefore, there 
are no significant radiological environmental impacts associated with 
the proposed action.
    With regard to potential nonradiological impacts, the proposed 
action does not have a potential to affect any historic sites. It does 
not affect nonradiological plant effluents and has no other 
environmental impact. Therefore, there are no significant 
nonradiological environmental impacts associated with the proposed 
action.
    Accordingly, the NRC concludes that there are no significant 
environmental impacts associated with the proposed action.

Environmental Impacts of the Alternatives to the Proposed Action

    As an alternative to the proposed action, the staff considered 
denial of the proposed action (i.e., the ``no-action'' alternative). 
Denial of the application would result in no change in current 
environmental impacts. The environmental impacts of the proposed action 
and the alternative action are similar.

Alternative Use of Resources

    The action does not involve the use of any different resource than 
those previously considered in the Final Environmental Statement for 
MP2, dated June 1973.

Agencies and Persons Consulted

    On February 25, 2002, the staff consulted with the Connecticut 
State official, Mr. Michael Firsick of the Connecticut Department of 
Environmental Protection, regarding the environmental impact of the 
proposed action. The State official had no comments.

Finding of No Significant Impact

    On the basis of the environmental assessment, the NRC concludes 
that the proposed action will not have a significant effect on the 
quality of the human environment. Accordingly, the NRC has determined 
not to prepare an environmental impact statement for the proposed 
action.
    For further details with respect to the proposed action, see the 
licensee's letter dated December 21, 2000, as supplemented by letter 
dated June 29, 2001. Documents may be examined, and/or copied for a 
fee, at the NRC's Public Document Room (PDR), located at One White 
Flint North, 11555 Rockville Pike (first floor), Rockville, Maryland. 
Publicly available records will be accessible electronically from the 
Agencywide Documents Access and Management System (ADAMS) Public 
Electronic Reading Room on the Internet at the NRC Web site, http://www.nrc.gov/reading-rm/adams.html. Persons who do not have access to 
ADAMS or who encounter problems in accessing the documents located in 
ADAMS should contact the NRC PDR Reference staff by telephone at 1-800-
397-4209 or 301-415-4737, or by e-mail to [email protected].

    Dated at Rockville, Maryland, this 8th day of April 2002.
    For the Nuclear Regulatory Commission.
Richard B. Ennis, Sr.,
Project Manager, Section 2, Project Directorate I, Division of 
Licensing Project Management, Office of Nuclear Reactor Regulation.
[FR Doc. 02-8865 Filed 4-11-02; 8:45 am]
BILLING CODE 7590-01-P