Environmental Impact Statement - radioactive monticello

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Appendix G insights from the plant-specific IPE and IPEEE. A qualitative screening removed SAMA candidates that (1) were not applicable at Monticello due to design differences, (2) were of low benefit in BWRs, (3) had already been implemented at Monticello, (4) had been achieved at Monticello using other means, or (5) exceeded $8.6 million to implement (the modified maximum averted cost-risk). Twenty-four SAMAs were eliminated leaving 16 for evaluation. Another screening removed one additional SAMA leaving 15 SAMAs for further evaluation. For the remaining SAMA candidates, a more detailed design and cost estimate were developed as shown in Table G-4. The cost-benefit analyses showed that seven of the SAMA candidates were potentially cost-beneficial in the baseline analysis. NMC performed additional analyses to evaluate the impact of parameter choices and uncertainties on the results of the SAMA assessment. As a result, several additional SAMAs were identified as potentially cost-beneficial. NMC evaluated the impact of implementing a selected set of six "recommended" row-cost SAMAs. The evaluation indicated that the remaining SAMAs, with the exception of one SAMA, would no longer be cost-beneficial. Since the ER was submitted, NMC stated that it has implemented all six of the "recommended" SAMAs (SAMAs 2, 11, 12, 28, 36, and 37). NMC is in the process of further evaluating the one remaining cost-beneficial SAMA (SAMA 16). The staff reviewed the NMC analysis and concludes that the methods used and the implementation of those methods was sound. The treatment of SAMA benefits and costs support the general conclusion that the SAMA evaluations performed by NMC are reasonable and sufficient for the license renewal submittal. Although the treatment of SAMAs for external events was somewhat limited by the unavailability of an external event PSA, the likelihood of there being cost-beneficial enhancements in this area was minimized by: inclusion of several candidate SAMAs related to dominant fire events, improvements that have been realized as a result of the IPEEE process, and inclusion of a multiplier to account for external events. The staff concurs with NMC's identification of areas in which risk can be further reduced in a cost-beneficial manner through the implementation of all or a subset of the identified, potentially cost-beneficial SAMAs. The staff agrees that the implementation of the "recommended" SAMAs by NMC is beneficial, and that after implementing the recommended SAMAs, only one additional SAMA remains potentially cost-beneficial. However, this SAMA does not relate to adequately managing the effects of aging during the period of extended operation. Therefore, it need not be implemented as part of license renewal pursuant to Title 10 of the Code of Federal Regulations, Part 54. G.8 References Northern States Power Company (NSP). 1992. Letter from Thomas M. Parker, NSP to U.S. Nuclear Regulatory Commission Document Control Desk. Subject: "Monticello Nuclear NUREG-1437, Supplement 26 G-28 August 2006 1 -
Appendix G Generating Plant, Docket No. 50-263, License No. DPR-22." Submittal of Monticello Individual Plant Examination Report. February 27, 1992. Northern States Power Company (NSP). 1995a. Letter from W. J. Hill, NSP to NRC Document Control Desk. Subject: "Submittal of Monticello Individual Plant Examination of External Events Report." March 1, 1995. Northern States Power Company (NSP). 1995b. Letter from W. J. Hill, NSP to NRC Document Control Desk. Subject: "Submittal of Monticello Individual Plant Examination of External Events Report, Revision 1; Seismic Analysis, Revision 0 and Internal Fires Analysis, Revision 1 (TAC M83644)." November 20, 1995. Nuclear Management Company (NMC). 2005a. Applicant's <strong>Environmental</strong> Report-Operating License Renewal Stage, Monticello Nuclear Generating Plant. Docket No. 50-263, License No. DPR-22. Monticello, Minnesota. Nuclear Management Company (NMC). 2005b. Letter from John T. Conway, NMC to NRC Document Control Desk. Subject: "Response to Request for Additional Information Regarding Severe Accident Mitigation Alternatives for the Monticello Nuclear Generating Plant (TAC MC6441)." July 27, 2005. U.S. Census Bureau (USCB). 2000a. Census 2000 Summary File 1 - 100 percent data. Available online at: http://www.census.gov/Press-Release/www/2001/SumFilel .html U.S. Census Bureau (USCB). 2000b. 2000 Redistricting Data (P.L. 94-171) Summary File and 1990 Census. Table 1 Counties in Alphabetical Sort within State, 1990 and 2000 Population, Numeric and Percent Change: 1990 to 2000. April 2, 2001. Available online at: http://www.census.gov/population/cen2000/phc-t4/tabO0 .xls U.S. Department of Agriculture (USDA). 1998. 1997 Census of Agriculture, National Agriculture Statistics Service, 1998. Available online at: http://www.nass.usda.gov/census/census97/volumel/vol1pubs.htm. U.S. Nuclear Regulatory Commission (NRC). 1990. Severe Accident Risks: An Assessment for Five U.S. Nuclear Power Plants. NUREG-1150, Washington, D.C. U.S. Nuclear Regulatory Commission (NRC). 1991. Supplement 4 to Generic Letter 88-20, "Individual Plant Examination of External Events (IPEEE) for Severe Accident Vulnerabilities, 10 CFR 50.54(f)," June 28, 1991. August 2006 G-29 NUREG-1437, Supplement 26 1
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NUREG-1437 Supplement 26 Generic En
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Generic Environmental Impact Statem
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Abstract The U.S. Nuclear Regulator
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Contents Abstract........... ......
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Contents 4.8.7 Conclusions Regardin
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Figures Figure 2-1. Figure 2-2. Fig
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Contents Table 5-1. Category 1 Issu
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Executive Summary The Commission ha
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Executive Summary NMC and the staff
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0 degree pCi microcurie(s) pCi/mL m
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Abbreviations/Acronyms IPE IPEEE J
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Abbreviations/Acronyms rem REMP RHR
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Introduction and (4) present the st
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Introduction (1) The environmental
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Introduction I assessment of the re
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Introduction This definition of pur
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2.0 Description of Nuclear Power Pl
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Description of Site and Environment
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Descfiption of Site and Environment
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Table 2-10. Land Use in Sherburne C
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Environmental Impacts of Refurbishm
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Environmental Impacts of Refurbishm
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Environmental Impacts of Operation
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Environmental Impacts of the Uraniu
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Environmental Impacts of Decommissi
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9.0 Summary and Conclusions By lett
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Summary and Conclusions The GElS co
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Summary and Conclusions not reached
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z a :m G) CA, Table 9-1. Summary of
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Summary and Conclusions U.S. Nuclea
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Appendix A: Comments Received on th
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Appendix A Commenter ID Commenter A
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Appendix A A.1 Comments and Respons
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Monticello Nuclear Generating Plant
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3. General Comments Regarding Licen
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Appendix A nuclear power (I) and Mo
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Appendix A scoping process. If an i
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Appendix A Comment: The NRC does no
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Appendix A Comment: The EIS needs t
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Appendix A Comment: The EIS needs t
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Appendix A cognitive impairment. We
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Appendix A Despite available eviden
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Appendix A Comment: The Hospital Di
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Appendix A Comment: The NRC also fa
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Appendix A The NRC fails to acknowl
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the coal chain What about all the s
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gasification generation balanced ag
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Appendix A 14. Comments Concerning
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Appendix A Part II Comments Receive
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Appendix A Table A-2. (contd) Comme
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Appendix A Table A-2. (contd) Comme
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Appendix A A.2.4 General Comments i
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Appendix A Comment: Page 2-7, Line
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Appendix A turns out that we don't
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Appendix A A.2.12 Comments Concerni
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Appendix A Response: As described a
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information in the Final SEIS as pa
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Appendix A Response: The impacts to
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Appendix A Response: The text in Se
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aging management aspects of the lic
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Appendix A A-2 PURVES TODD: Just ba
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Appendix A PURVES TODD: Thank you v
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Appendix A So you don't look for wh
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Appendix A Yes CHUCK HOSTOVSKY: I t
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Appendix A information a little bit
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Appendix A Return-path: Received:
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Appendix A tAY-W8-2006 11! 07 'ENCL
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Appendix A ta W.Y United States Dep
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Appendix A MAY-17-206 13:11 P.04 U.
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Appendix B Contributors to the Supp
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Appendix B Name Karen McWilliams Na
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Appendix C: Chronology of NRC Staff
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Appendix C May 27, 2005 May 27, 200
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Appendix C June 1,2005 June 2, 2005
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Appendix C January 23, 2006 Februar
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Appendix D Organizations Contacted
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Appendix D Wright County Assessor,
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Appendix E: Nuclear Management Comp
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Cn N0 Table E-2. (contd) Expiration
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Appendix E UNITED STATES -" NUCLEAR
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Appendix E N. Archabal -2- potentia
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Appendix E D. Stinnett -2- miles of
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Appendix E FIGURE 2.1-3 SITE BOUNDA
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Appendix E Common Name Scientific N
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Appendix E A. Stinnet : -2- ' !We a
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