L-PI-10-038, Prairie Lsland, Supplement to Lrradiated Fuel Management Plan and Preliminary Decommissioning Cost Estimates

Prairie Lsland, Supplement to Lrradiated Fuel Management Plan and Preliminary Decommissioning Cost Estimates

ML101170144
Person / Time
Site:	Prairie Island
Issue date:	04/26/2010
From:	Schimmel M Northern States Power Co, Xcel Energy
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
L-PI-10-038, TAC ME2480, TAC ME2481
Download: ML101170144 (15)

Text

L-PI-10-038 10 CFR 50.54 10 CFR 50.75 U S Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Prairie lsland Nuclear Generating Plant, Unit 2 Docket 50-306 License No. DPR-60 Supplement to lrradiated Fuel Management Plan and Preliminaw Decommissioning Cost Estimates for Prairie lsland Nuclear Generating Plant (PINGP) (TAC Nos. ME2480 and ME24811

References:

1. Northern States Power Company, a Minnesota corporation (NSPM),

letter to the NRC, "lrradiated Fuel Management Plan and Preliminary Decommissioning Cost Estimates for Prairie lsland Nuclear Generating Plant (PINGP)", dated October 28, 2009, Accession Number ML093020064.

2. NRC letter to NSPM, "Prairie lsland Nuclear Generating Plant, Unit 2 -

Request for Additional Information Related to Review of lrradiated Fuel Management Plan and Preliminary Decommissioning Cost Estimate (TAC Nos. ME2480 and ME2481)", dated March 26,2010, Accession Number ML100830719.

In Reference 1, NSPM, doing business as Xcel Energy, submitted the PINGP lrradiated Fuel Management Plan for NRC review and preliminary approval and the PINGP Preliminary Decommissioning Cost Estimate for NRC review and approval. To support the review of Reference 1, the NRC Staff requested additional information in Reference 2 which is provided in the Enclosure to this letter.

If there are any questions or if additional information is needed, please contact Mr. Dale Vincent, P.E., at 651-388-1 121.

1717 Wakonade Drive East .Welch, Minnesota 55089-9642 Telephone: 651.388.1121

Document Control Desk Page 2 Summarv of Commitments This letter contains no new commitments and no revisions to existing commitments.

ark A. Schimmel Site Vice President, Prairie Island Nuclear Generating Plant Northern States Power Company - Minnesota Enclosures (1) cc: Administrator, Region Ill, USNRC Project Manager, PINGP, USNRC Resident Inspector, PINGP, USNRC

ENCLOSURE PRAIRIE ISLAND NUCLEAR GENERATING PLANT UNIT 2 DOCKET NO. 50-306 RESPONSES TO REQUEST FOR ADDITIONAL INFORMATION (RAI)

Page 1 of 13

Enclosure By letter to the U.S. Nuclear Regulatory Commission (NRC) dated October 28, 2009 (Agencywide Documents Access and Management System (ADAMS)

Accession No. ML093020064), Northern States Power Company, a Minnesota corporation (NSPM), doing business as Xcel Energy, submitted a request for review and approval of the Irradiated Fuel Management Plan and Preliminary Decommissioning Cost Estimate for the Prairie Island Nuclear Generating Plant (PINGP), Unit 2.

Following are NRC requests for additional information on Enclosure 1 of the NSPM letter dated October 28,2009 (shown as bold) and the NSPM responses.

(Note: Numbers may not add due to rounding).

RAI No.1: Nuclear Regulatory Commission (NRC) Minimum and Funding Status PINGP Unit 2 reported a trust fund balance of $357.8 million as of July 2009. What is the radiological decommissioning trust fund (DTF) balance as of December 31,2009? What is the impact of the December 31,2009 DTF balance on the October 28,2009 submittal?

NSPM Response:

NSPM letter to the NRC, "Decommissioning Funding Status Reports", dated March 31, 2010, (ADAMS Accession No. MLI 00910135) stated a radiological decommissioning trust fund balance of $385 million as of December 31, 2009.

This demonstrated an increase of approximately $27 million over the radiological balance reported in the October 28, 2009 submittal.

RAI No.2: Sufficiency of Funds Analysis In its submittal, PINGP stated that the Minnesota Public Utilities Commission approved a 2.89 percent cost escalation rate and a 6.30 percent earnings rate on external funds resulting i n a 3.41 percent real rate of return. Xcel submitted, for PINGP on March 31, 2009, the Decommissioning Funding Status Report (L-XE-09-05) that used an earnings rate of 5.4 percent, an escalation factor of 3.61 percent and a real rate of return of 1.79 percent with projected annual continuations of $12.65 million for approximately 6 years. Provide the documentation that supports the higher rate of return, as well as the period for which the 3.41 percent real rate of return applies.

NSPM Response:

Xcel Energy files a triennial decommissioning study with the Minnesota Public Utilities Commission (MPUC) for approval. A portion of the study is dedicated to Page 2 of 13

Enclosure an internal analysis of inflation factors surrounding the various components necessary to perform the decommissioning function. The analysis utilizes long-range inflation projections published by Global Insight, the Consumer Price Index, and the Chained Price Index for Gross Domestic Product, as well as other forecasted data. The rate of earnings and escalation factors were approved by the MPUC in the most recent triennial decommissioning study completed by Xcel Energy, MPUC Docket# E-002lM-08-1201, effective June 12, 2009. The MPUC approval assumes that the 3.41% is a levelized rate of return over the remaining plant operating life along with the entire decommissioning period. This rate will be reviewed again in the next Xcel Energy triennial decommissioning filing with the MPUC, which is required to be filed by October 201 1.

RAI No.3: Sufficiency of Funds Analysis If there are changes in the DTF balance that materially impact the licensee's cost analysis, given these considerations, the licensee would be under an obligation under 10 CFR 50.9 to update any changes in projected cost or available funds. Has PINGP examined the impact of the change in the real rate of return and the deletion of the annual contributions on the projected DTF balance identified in their submittal dated March 31, 2009, and the PINGP Unit 1 submittal dated August 8, 2008?

NSPM Response:

The following tables provide a breakdown of the annual decommissioning costs, total expenditures, and total contributions for radiological, ISFSl (spent fuel management) and site restoration (Greenfield) for each Unit 2 cost area, and Unit 2 cost areas combined. This analysis assumes the current rate of return approved by the MPUC in 2009. In this analysis, the annuity (contributions) for 2010 and 201 1 are collected exclusively from ratepayers in the North Dakota jurisdiction. For the years 2012, 2013 and 2014 the annuity (contributions) will again come from ratepayers in all jurisdictions.

The beginning balances shown are the external fund balances, including both the qualified fund and the escrow fund, as of December 31, 2009. Decommissioning payment values are shown in 2009 dollars, inflated one year from the original decommissioning cost study values, using an assumed rate of inflation of 2.89%.

Assumed interest was calculated using an assumed real rate of return of 3.41%.

The effect of inflating the radiological decommissioning payments (expenditures) one year forward into 2009 dollars is an increase of approximately $15.5 million over the total radiological expenses shown in 2008 dollars in the NSPM letter to the NRC "Supplement to Irradiated Fuel Management Plan and Preliminary Decommissioning Cost Estimates for Prairie Island Nuclear Generating Plant (PINGP) (TAC Nos. MD9492, MD9493, MD9494 and MD9495)", dated

Enclosure January 19, 2009 (ADAMS Accession No. ML090210156). The 2008 estimate also assumed a 5.40% Rate of Return and a 3.61% Escalation Factor with a Real Rate of Return of 1.79%.

The effect of the changes in these assumptions, along with the corresponding changes in contributions (annuities) from customers, results in an increase in the estimated balance remaining in the fund for radiological decommissioning at the conclusion of decommissioning activities of $10.5 million. Under expected conditions the current fund balances for PlNGP Unit 2 are sufficient to cover all estimated decommissioning payments.

Radioloaical: PlNGP Unit 2 Beginning Payment Annuity Balance Assumed Ending Year Fund Balance (Expenditures) (Contributions) Before lnterest lnterest Balance 2010 383,932,350 383,932,350 13,092,093 397,024,443 201 1 397,024,443 397,024,443 13,538,534 410,562,977 2012 410,562,977 10,415,560 420,978,537 14,355,368 435,333,905 2013 435,333,905 - 10,415,560 445,749,465 15,200,057 460,949,521 2014 460,949,521 9,656,227 8,332,448 459,625,743 15,673,238 475,298,981 201 5 475,298,981 59,694,720 41 5,604,261 14,172,105 429,776,366 201 6 429,776,366 102,934,243 326,842,123 11,145,316 337,987,440 201 7 337,987,440 95,539,538 242,447,901 8,267,473 250,715,375 2018 250,715,375 71,079,499 179,635,876 6,125,583 185,761,459 2019 185,761,459 44,796,248 140,965,211 4,806,914 145,772,125 2020 145,772,125 10,001,937 135,770,188 4,629,763 140,399,951 2021 140,399,951 9,974,157 1 30,425,795 4,447,520 134,873,314 2022 134,873,314 9,974,157 124,899,158 4,259,061 129,158,219 2023 129,158,219 9,974,157 119,184,062 4,064,177 123,248,239 2024 123,248,239 10,001,937 1 1 3,246,302 3,861,699 117,108,001 2025 117,108,001 9,974,157 107,133,844 3,653,264 110,787,108 2026 110,787,108 9,974,157 100,812,952 3,437,722 104,250,673 2027 104,250,673 9,974,157 94,276,517 3,214,829 97,491,346 2028 97,491,346 10,001,937 87,489,409 2,983,389 90,472,798 2029 90,472,798 16,752,550 73,720,248 2/573,860 76,234,109 2030 76,234,109 42,577,940 33,656,169 1,147,675 34,803,844 2031 34,803,844 9,773,521 25,030,323 853,534 25,883,857 2032 25,883,857 37,040 25,846,817 881,376 26,728,193 2033 26,728,193 21,607 26,706,586 910,695 27,617,281 2034 27,617,281 27,617,281 941,749 28,559,030 2035 28,559,030 28,559,030 973,863 29,532,893 2036 29,532,893 29,532,893 1,007,072 30,539,965 2037 30,539,965 30,539,965 1,041,413 31,581,378 2038 31,581,378 31,581,378 1,076,925 32,658,303 2039 32,658,303 32,658,303 1 ,I13,648 33,771,951 2040 33,771,951 33,771,951 1,151,624 34,923,574 2041 34,923,574 34,923,574 1 ,I90,894 36,114,468 2042 36,114,468 36,114,468 1,231,503 37,345,971 Page 4 of 13

Enclosure Beginning Payment Annuity Balance Assumed Ending Year Fund Balance (Expenditures) (Contributions) Before lnterest lnterest Balance 2043 37,345,971 37,345,971 1,273,498 38,619,469 2044 38,619,469 38,619,469 1,316,924 39,936,393 2045 39,936,393 39,936,393 1,361,831 41,298,224 2046 41,298,224 41,298,224 1,408,269 42,706,493 2047 42,706,493 42,706,493 1,456,291 44,162,785 2048 44,162,785 44,162,785 1,505,951 45,668,736 2049 45,668,736 45,668,736 1,557,304 47,226,040 2050 47,226,040 47,226,040 1,610,408 48,836,448 2051 48,836,448 48,836,448 1,665,323 50,501,770 2052 50,501,770 50,501,770 1,722,110 52,223,881 2053 52,223,881 10,817,855 41,406,026 1,411,945 42,817,972 Total Unit 2 Radiological expenditures $553,531,738 Spent Fuel Management: PlNGP Unit 2 Beginning Payment Annuity Balance Assumed Ending Year Fund Balance (Expenditures) (Contributions) Before lnterest lnterest Balance 2010 29,861,404 394,046 30,255,450 1,031,711 31,287,161 201 1 31,287,161 394,046 31,681,207 1,080,329 32,761,536 2012 32,761,536 394,046 33,155,582 1,130,605 34,286,187 2013 34,286,187 394,046 34,680,233 1,182,596 35,862,829 2014 35,862,829 2,106,158 394,046 34,150,717 1,164,539 35,315,256 2015 35,315,256 12,453,806 16,874,250 39,735,701 1,354,987 41,090,688 2016 41,090,688 14,082,554 16,874,250 43,882,384 1,496,389 45,378,773 2017 45,378,773 11,258,224 16,874,250 50,994,799 1,738,923 52,733,722 2018 52,733,722 7,679,710 16,874,250 61,928,262 2,111,754 64,040,016 2019 64,040,016 7,190,982 16,874,250 73,723,284 2,513,964 76,237,248 2020 76,237,248 6,560,266 16,874,250 86,551,232 2,951,397 89,502,629 202 1 89,502,629 6,541,746 16,874,250 99,835,133 3,404,378 103,239,511 2022 103,239,511 6,541,746 16,874,250 113,572,014 3,872,806 117,444,820 2023 117,444,820 6,541,746 16,874,250 127,777,324 4,357,207 132,134,531 2024 132,134,531 6,560,266 14,159,571 139,733,835 4,764,924 144,498,759 2025 144,498,759 6,541,746 137,957,013 4,704,334 142,661,347 2026 142,661,347 6,541,746 136,119,601 4,641,678 140,761,279 2027 140,761,279 6,541,746 134,219,533 4,576,886 138,796,419 2028 138,796,419 6,560,266 132,236,153 4,509,253 136,745,406 2029 136,745,406 5,491,239 131,254,166 4,475,767 135,729,933 2030 135,729,933 504,161 135,225,772 4,611,199 139,836,971 2031 139,836,971 4,151,612 135,685,360 4,626,871 140,312,231 2032 140,312,231 5,542,684 134,769,546 4,595,642 139,365,188 2033 139,365,188 4,648,570 134,716,618 4,593,837 139,310,454 2034 139,310,454 3,418,006 135,892,448 4,633,932 140,526,381 2035 140,526,381 3,418,006 137,108,375 4,675,396 141,783,771 2036 141,783,771 3,427,266 138,356,505 4,717,957 143,074,462 2037 143,074,462 3,418,006 139,656,456 4,762,285 144,418,741 Page 5 of 13

Enclosure Beginning Payment Annuity Balance Assumed Ending Year Fund Balance (Expenditures) (Contributions) Before lnterest lnterest Balance 2038 144,418,741 3,418,006 141,000,735 4,808,125 145,808,860 2039 145,808,860 3,418,006 142,390,854 4,855,528 147,246,383 2040 147,246,383 3,427,266 143,819,117 4,904,232 148,723,349 2041 148,723,349 3,418,006 145,305,343 4,954,912 150,260,255 2042 150,260,255 3,418,006 146,842,249 5,007,321 151,849,570 2043 151,849,570 3,418,006 148,431,564 5,061,516 153,493,080 2044 153,493,080 3,427,266 150,065,815 5,117,244 155,183,059 2045 155,183,059 3,418,006 151,765,053 5,175,188 156,940,241 2046 156,940,241 3,418,006 153,522,235 5,235,108 158,757,344 2047 158,757,344 3,418,006 155,339,338 5,297,071 160,636,409 2048 160,636,409 3,427,266 157,209,143 5,360,832 162,569,975 2049 162,569,975 3,418,006 159,151,969 5,427,082 164,579,052 2050 164,579,052 3,418,006 161,161,046 5,495,592 166,656,637 2051 166,656,637 3,418,006 163,238,632 5,566,437 168,805,069 2052 168,805,069 3,427,266 165,377,803 5,639,383 171,017,186 2053 171,017,186 3,451,960 167,565,227 5,713,974 173,279,201 2054 173,279,201 7,380,300 165,898,901 5,657,153 171,556,054 Total Unit 2 Spent Fuel Management expenditures $209,861,646 Site Restoration: PlNGP Unit 2 Beginning Payment Annuity Balance Assumed Ending Year Fund Balance (Expenditures) (Contributions) Before lnterest lnterest Balance 2010 12,797,746 184,582 12,982,328 442,697 13,425,025 201 1 13,425,025 184,582 13,609,607 464,088 14,073,695 2012 14,073,695 184,582 14,258,277 486,207 14,744,484 2013 14,744,484 184,582 14,929,066 509,081 15,438,147 2014 15,438,147 43,214 1,972,830 17,367,763 592,241 17,960,004 2015 17,960,004 324,104 1,972,830 19,608,731 668,658 20,277,388 2016 20,277,388 1,507,339 1,972,830 20,742,880 707,332 21,450,212 2017 21,450,212 1,634,922 1,972,830 21,788,120 742,975 22,531,094 2018 22,531,094 1,256,287 1,972,830 23,247,637 792,744 24,040,382 2019 24,040,382 716,114 1,972,830 25,297,097 862,631 26,159,728 2020 26,159,728 1,972,830 28,132,558 959,320 29,091,878 2021 29,091,878 1,972,830 31,064,708 1,059,307 32,124,015 2022 32,124,015 1,972,830 34,096,845 1,162,702 35,259,547 2023 35,259,547 1,972,830 37,232,377 1,269,624 38,502,001 2024 38,502,001 1,972,830 40,474,831 1,380,192 41,855,022 2025 41,855,022 1,972,830 43,827,852 1,494,530 45,322,382 2026 45,322,382 1,972,830 47,295,212 1,612,767 48,907,979 2027 48,907,979 1,578,264 50,486,242 1,721,581 52,207,823 2028 52,207,823 52,207,823 1,780,287 53,988,110 2029 53,988,110 53,988,110 1,840,995 55,829,105 2030 55,829,105 55,829,105 1,903,772 57,732,877 2031 57,732,877 15,100,136 42,632,741 1,453,776 44,08631 7 Page 6 of 13

Enclosure Beginning Payment Annuity Balance Assumed Ending Year Fund Balance (Expenditures) (Contributions) Before lnterest lnterest Balance 2032 44,086,517 20,776,578 23,309,940 794,869 24,104,808 2033 24,104,808 12,091,633 12,013,176 409,649 12,422,825 2034 12,422,825 12,422,825 423,618 12,846,443 2035 12,846,443 12,846,443 438,064 13,284,507 2036 13,284,507 13,284,507 453,002 13,737,509 2037 13,737,509 13,737,509 468,449 14,205,958 2038 14,205,958 14,205,958 484,423 14,690,381 2039 14,690,381 14,690,381 500,942 15,191,323 2040 15,191,323 15,191,323 518,024 15,709,347 2041 15,709,347 15,709,347 535,689 16,245,036 2042 16,245,036 16,245,036 553,956 16,798,991 2043 16,798,991 16,798,991 572,846 17,371,837 2044 17,371,837 17,371,837 592,380 17,964,217 2045 17,964,217 17,964,217 612,580 18,576,796 2046 18,576,796 18,576,796 633,469 19,210,265 2047 19,210,265 19,210,265 655,070 19,865,335 2048 19,865,335 19,865,335 677,408 20,542,743 2049 20,542,743 20,542,743 700,508 21,243,251 2050 21,243,251 21,243,251 724,395 21,967,646 2051 21,967,646 21,967,646 749,097 22,716,742 2052 22,716,742 22,716,742 774,641 23,491,383 2053 23,491,383 23,491,383 801,056 24,292,439 2054 24,292,439 24,292,439 828.372 25,120,812 Total Unit 2 Site Restoration expenditures $53,450,326 Total PINGP Unit 2 Beginning Payment Annuity Balance Assumed Ending Year Fund Balance (Expenditures) (Contributions) Before lnterest lnterest Balance 2010 426,591,500 578,628 427,170,128 14,566,501 441,736,629 201 1 441,736,629 578,628 442,315,257 15,082,950 457,398,208 2012 457,398,208 10,994,188 468,392,396 15,972,181 484,364,576 2013 484,364,576 10,994,188 495,358,764 16,891,734 512,250,498 2014 512,250,498 11,805,599 10,699,324 511,144,223 17,430,018 528,574,241 2015 528,574,241 72,472,629 18,847,080 474,948,692 16,195,750 491,144,442 2016 491,144,442 118,524,136 18,847,080 391,467,387 13,349,038 404,816,425 2017 404,816,425 108,432,684 18,847,080 315,230,820 10,749,371 325,980,191 2018 325,980,191 80,015,495 18,847,080 264,811,776 9,030,082 273,841,857 2019 273,841,857 52,703,345 18,847,080 239,985,592 8,183,509 248,169,101 2020 248,169,101 16,562,203 18,847,080 250,453,978 8,540,481 258,994,458 2021 258,994,458 16,515,903 18,847,080 261,325,635 8,911,204 270,236,840 2022 270,236,840 16,515,903 18,847,080 272,568,017 9,294,569 281,862,586 2023 281,862,586 16,515,903 18,847,080 284,193,763 9,691,007 293,884,770 2024 293,884,770 16,562,203 16,132,401 293,454,968 10,006,814 303,461,783 2025 303,461,783 16,515,903 1,972,830 288,918,710 9,852,128 298,770,838 Page 7 of 13

Enclosure Beginning Payment Annuity Balance Assumed Ending Year Fund Balance (Expenditures) (Contributions) Before lnterest Interest Balance 2026 298,770,838 16,515,903 1,972,830 284,227,765 9,692,167 293,919,931 2027 293,919,931 16,515,903 1,578,264 278,982,292 9,513,296 288,495,589 2028 288,495,589 16,562,203 271,933,385 9,272,928 281,206,314 2029 281,206,314 22,243,789 258,962,525 8,830,622 267,793,147 2030 267,793,147 43,082,101 224,711,046 7,662,647 232,373,693 2031 232,373,693 29,025,269 203,348,424 6,934,181 21 0,282,605 2032 210,282,605 26,356,302 183,926,303 6,271,887 190,198,189 2033 190,198,189 16,761,810 173,436,380 5,914,181 179,350,560 2034 179,350,560 3,418,006 175,932,554 5,999,300 181,931,854 2035 181,931,854 3,418,006 178,513,849 6,087,322 184,601,I71 2036 184,601,171 3,427,266 181 ,I73,905 6,178,030 187,351,935 2037 187,351,935 3,418,006 183,933,929 6,272,147 190,206,076 2038 190,206,076 3,418,006 186,788,070 6,369,473 193,157,544 2039 193,157,544 3,418,006 189,739,538 6,470,118 196,209,656 2040 196,209,656 3,427,266 192,782,390 6,573,880 199,356,270 2041 199,356,270 3,418,006 195,938,264 6,681,495 202,619,759 2042 202,619,759 3,418,006 199,201,753 6,792,780 205,994,533 2043 205,994,533 3,418,006 202,576,527 6,907,860 209,484,386 2044 209,484,386 3,427,266 206,057,121 7,026,548 21 3,083,668 2045 213,083,668 3,418,006 209,665,663 7,149,599 216,815,262 2046 216,815,262 3,418,006 213,397,256 7,276,846 220,674,102 2047 220,674,102 3,418,006 21 7,256,096 7,408,433 224,664,529 2048 224,664,529 3,427,266 221,237,263 7,544,191 228,781,454 2049 228,781,454 3,418,006 225,363,448 7,684,894 233,048,342 2050 233,048,342 3,418,006 229,630,336 7,830,394 237,460,731 2051 237,460,731 3,418,006 234,042,725 7,980,857 242,023,582 2052 242,023,582 3,427,266 238,596,316 8,136,134 246,732,450 2053 246,732,450 14,269,814 232,462,636 7,926,976 240,389,612 2054 240,389,612 7,380,300 233,009,312 7,945,618 240,954,930 Total Unit 2 expenditures $816,843,710 RAI No.4: Table 3 Funds Analysis The Table did not identify the source of the annuity of $10.4 million in 2012, $10.4 million in 2013, and $8.3 million in 2014 contributions.

Please identify the source of this annuity.

NSPM Response:

Annuity contributions in 2012 through 2014 will be collected through rates from customers from the various jurisdictions.

Page 8 of 13

Enclosure RAI No.5: Table 3 Funds Analysis Table 3 does not addresslbreakout the expenses identified in the table. Are the paymentslexpenses for both radiological decommissioning and spent fuel storage costs or for radiological decommissioning costs only? The cost associated with spent fuel storage needs to be included in PINGP's analysis for Unit 2. For Unit I, PlNGP estimated that fuel transfer would begin in 2028, with completion of the fuel transfer to the DOE in 2053, and estimated the annual cost associated with dry storage for the period from 2031 to 2053 at $3.3 million. For Unit 2, PINGP's August 8, 2008, submittal estimated an annual cost of $3.3 million for the period from 2014 to 2053; however, these costs were not included in the analysis.

NSPM Response:

Table 3 in the August 8, 2008 submittal provided a breakout of expenses for the various periods involving radiological decommissioning (NRC license termination costs), irradiated fuel management costs, and site restoration costs for each unit.

The tables included in RAI No. 3, above, provide annual cash flows for radiological decommissioning, irradiated fuel management and site restoration costs for Unit 2.

In the August 8, 2008 submittal, the $3.3 million should apply to each year from 2034 to 2053 for Unit 2. The costs associated with irradiated fuel management for years 2014 to 2034 can be calculated as being one half of the cost identified in the IFM [Irradiated Fuel Management] column of Table 1 of the August 2008 report.

RAI No.6: Table 3 Funds Analysis The paymentslexpenditures identified in Table 3 appear to be in 2008 dollars. The expenses are identical to the expenses listed in PINGP's submittal dated January 19, 2009, Table 3.2a, while the trust fund balance is in 2009 dollars. Please update the estimated expenditures to 2009 dollars, and identify the escalation factor and its supporting basis.

NSPM Response:

The following tables show the estimated decommissioning costs for radiological, spent fuel management, and site restoration activities updated to 2009 dollars using the assumed rate of inflation approved by the MPUC in the 2008 triennial nuclear decommissioning filing. These costs tie to the payments shown in the tables in response RAI No. 3. The escalation factor assumed for this purpose is 2.89%.

Page 9 of 13

Enclosure Radiological: PlNGP Unit 2 Equipment &

Year Labor Materials Energy Burial Other Yearly Totals 2014 7,193,040 263,398 530,912 8,231 1,660,645 9,656,227 2015 42,404,056 3,105,220 3,555,878 1,409,593 9,219,973 59,694,720 2016 53,288,789 19,208,534 3,926,282 19,688,002 6,822,636 102,934,243 2017 53,854,684 16,372,886 2,621,637 17,715,600 4,974,732 95,539,538 2018 51,962,537 6,655,954 2,268,725 6,944,046 3,248,237 71,079,499 2019 32,891,875 3,839,855 1,552,610 3,962,294 2,549,614 44,796,248 2020 7,645,756 109,063 607,051 11,318 1,628,749 10,001,937 202 1 7,624,149 109,063 604,993 11,318 1,624,633 9,974,157 2022 7,624,149 109,063 604,993 11,318 1,624,633 9,974,157 2023 7,624,149 109,063 604,993 11,318 1,624,633 9,974,157 2024 7,645,756 109,063 607,051 11,318 1,628,749 10,001,937 2025 7,624,149 109,063 604,993 11,318 1,624,633 9,974,157 2026 7,624,149 109,063 604,993 11,318 1,624,633 9,974,157 2027 7,624,149 109,063 604,993 11,318 1,624,633 9,974,157 2028 7,645,756 109,063 607,051 11,318 1,628,749 10,001,937 2029 12,475,413 934,241 710,970 768,588 1,863,338 16,752,550 2030 28,772,160 3,072,295 921,894 2,287,245 7,524,346 42,577,940 2031 5,894,568 312,786 163,595 11,318 3,391,254 9,773,521 2032 37,040 0 0 0 0 37,040 2033 21,607 0 0 0 0 21,607 2034 0 0 0 0 0 0 2035 0 0 0 0 0 0 2036 0 0 0 0 0 0 2037 0 0 0 0 0 0 2038 0 0 0 0 0 0 2039 0 0 0 0 0 0 2040 0 0 0 0 0 0 204 1 0 0 0 0 0 0 2042 0 0 0 0 0 0 2043 0 0 0 0 0 0 2044 0 0 0 0 0 0 2045 0 0 0 0 0 0 2046 0 0 0 0 0 0 2047 0 0 0 0 0 0 2048 0 0 0 0 0 0 2049 0 0 0 0 0 0 2050 0 0 0 0 0 0 2051 0 0 0 0 0 0 2052 0 0 0 0 0 0 2053 0 226,358 0 0 10,591,497 10,817,855 Totals 54,973,098 52,896,778 66,480,316 553,531,738 Page 10 of 13

Enclosure Spent Fuel Management: PlNGP Unit 2 Equipment &

Year Labor Materials Energy Burial Other Yearly Totals 2014 491,814 1,473,385 0 0 140,959 2,106,158 2015 2,912,816 8,737,419 0 0 803,571 12,453,806 2015 3,352,156 10,058,526 0 0 671,872 14,082,554 2,662,793 7,989,409 0 0 606,022 11,258,224 1,768,679 5,305,008 0 0 606,022 7,679,710 2019 1,646,240 4,938,720 0 0 606,022 7,190,982 2020 1,487,789 4,465,426 0 0 607,051 6,560,266 2021 1,483,674 4,452,050 0 0 606,022 6,541,746 2022 1,483,674 4,452,050 0 0 606,022 6,541,746 2023 1,483,674 4,452,050 0 0 606,022 6,541,746 2024 1,487,789 4,465,426 0 0 607,051 6,560,266 2025 1,483,674 4,452,050 0 0 606,022 6,541,746 2026 1,483,674 4,452,050 0 0 606,022 6,541,746 2027 1,483,674 4,452,050 0 0 606,022 6,541,746 2028 1,487,789 4,465,426 0 0 607,051 6,560,266 2029 1,240,853 3,722,560 0 0 527,826 5,491,239 2030 85,399 254,138 0 0 164,624 504,161 2031 3,290,422 169,769 65,850 0 625,571 4,151,612 2032 4,500,409 152,277 90,543 0 799,455 5,542,684 2033 3,630,988 129,641 90,543 0 797,398 4,648,570 2034 2,431,291 98,774 90,543 0 797,398 3,418,006 2035 2,431,291 98,774 90,543 0 797,398 3,418,006 2036 2,438,493 98,774 90,543 0 799,455 3,427,266 2037 2,431,291 98,774 90,543 0 797,398 3,418,006 2038 2,431,291 98,774 90,543 0 797,398 3,418,006 2039 2,431,291 98,774 90,543 0 797,398 3,418,006 2040 2,438,493 98,774 90,543 0 799,455 3,427,266 2041 2,431,291 98,774 90,543 0 797,398 3,418,006 2042 2,431,291 98,774 90,543 0 797,398 3,418,006 2043 2,431,291 98,774 90,543 0 797,398 3,418,006 2044 2,438,493 98,774 90,543 0 799,455 3,427,266 2045 2,431,291 98,774 90,543 0 797,398 3,418,006 2046 2,431,291 98,774 90,543 0 797,398 3,418,006 2047 2,431,291 98,774 90,543 0 797,398 3,418,006 2048 2,438,493 98,774 90,543 0 799,455 3,427,266 2049 2,431,291 98,774 90,543 0 797,398 3,418,006 2050 2,431,291 98,774 90,543 0 797,398 3,418,006 2051 2,431,291 98,774 90,543 0 797,398 3,418,006 2052 2,438,493 98,774 90,543 0 799,455 3,427,266 2053 2,423,060 95,688 91,572 34,983 806,658 3,451,960 2054 542,230 1,100,923 150,219 4,172,190 1,414,738 7,380,300 Totals 88,143,805 86,112,757 2,209,048 4,207,172 29,188,864 209,861,646 Page 11 of 13

Enclosure Site Restoration: PlNGP Unit 2 Equipment &

Year Labor Materials Energy Burial Other Yearly Totals 2014 43,214 0 0 0 0 43,214 2015 324,104 0 0 0 0 324,104 2016 1,351,975 22,636 0 0 132,728 1,507,339 2017 1,493,963 25,723 0 0 115,237 1,634,922 2018 1,241,882 14,405 0 0 0 1,256,287 207 9 707,883 8,231 0 0 0 716,114 2020 0 0 0 0 0 0 202 1 0 0 0 0 0 0 2022 0 0 0 0 0 0 2023 0 0 0 0 0 0 2024 0 0 0 0 0 0 2025 0 0 0 0 0 0 2026 0 0 0 0 0 0 2027 0 0 0 0 0 0 2028 0 0 0 0 0 0 2029 0 0 0 0 0 0 2030 0 0 0 0 0 0 2031 10,641,913 4,301,831 154,335 0 2,058 15,100,136 2032 14,643,305 5,919,262 21 1,953 0 2,058 20,776,578 2033 8,522,379 3,444,757 123,468 0 1,029 12,091,633 2034 0 0 0 0 0 0 2035 0 0 0 0 0 0 2036 0 0 0 0 0 0 2037 0 0 0 0 0 0 2038 0 0 0 0 0 0 2039 0 0 0 0 0 0 2040 0 0 0 0 0 0 2041 0 0 0 0 0 0 2042 0 0 0 0 0 0 2043 0 0 0 0 0 0 2044 0 0 0 0 0 0 2045 0 0 0 0 0 0 2046 0 0 0 0 0 0 2047 0 0 0 0 0 0 2048 0 0 0 0 0 0 2049 0 0 0 0 0 0 2050 0 0 0 0 0 0 2051 0 0 0 0 0 0 2052 0 0 0 0 0 0 2053 0 0 0 0 0 0 2054 0

'otals 13,736,844 Page 12 of 13

Enclosure All Costs Combined: PlNGP Unit 2 Equipment &

Year Labor Materials Energy Burial Other Yearly Totals 2014 7,728,068 1,736,783 530,912 8,231 1,801,604 11,805,599 2015 45,640,975 11,842,639 3,555,878 1,409,593 10,023,544 72,472,629 2016 57,992,920 29,289,696 3,926,282 19,688,002 7,627,236 118,524,136 2017 58,011,440 24,388,017 2,621,637 17,715,600 5,695,990 108,432,684 2018 54,973,098 11,975,367 2,268,725 6,944,046 3,854,259 80,015,495 2019 35,245,998 8,786,806 1,552,610 3,962,294 3,155,636 52,703,345 2020 9,133,545 4,574,489 607,051 11,318 2,235,800 16,562,203 202 1 9,107,823 4,561 , I 14 604,993 11,318 2,230,655 16,515,903 2022 9,107,823 4,561 ,I 14 604,993 11,318 2,230,655 16,515,903 2023 9,107,823 4,561, I 14 604,993 11,318 2,230,655 16,515,903 2024 9,133,545 4,574,489 607,051 11,318 2,235,800 16,562,203 2025 9,107,823 4,561, I 14 604,993 11,318 2,230,655 16,515,903 2026 9,107,823 4,561 ,I 14 604,993 11,318 2,230,655 16,515,903 2027 9,107,823 4,561, I 14 604,993 11,318 2,230,655 16,515,903 2028 9,133,545 4,574,489 607,051 11,318 2,235,800 16,562,203 2029 13,716,266 4,656,801 710,970 768,588 2,391,164 22,243,789 2030 28,857,558 3,326,434 921,894 2,287,245 7,688,970 43,082,101 2031 19,826,903 4,784,385 383,780 11,318 4,018,883 29,025,269 2032 19,180,754 6,071,539 302,497 0 801,513 26,356,302 2033 12,174,974 3,574,399 214,011 0 798,426 16,761,810 2034 2,431,291 98,774 90,543 0 797,398 3,418,006 2035 2,431,291 98,774 90,543 0 797,398 3,418,006 2036 2,438,493 98,774 90,543 0 799,455 3,427,266 2037 2,431,291 98,774 90,543 0 797,398 3,418,006 2038 2,431,291 98,774 90,543 0 797,398 3,418,006 2039 2,431,291 98,774 90,543 0 797,398 3,418,006 2040 2,438,493 98,774 90,543 0 799,455 3,427,266 2041 2,431,291 98,774 90,543 0 797,398 3,418,006 2042 2,431,291 98,774 90,543 0 797,398 3,418,006 2043 2,431,291 98,774 90,543 0 797,398 3,418,006 2044 2,438,493 98,774 90,543 0 799,455 3,427,266 2045 2,431,291 98,774 90,543 0 797,398 3,418,006 2046 2,431,291 98,774 90,543 0 797,398 3,418,006 2047 2,431,291 98,774 90,543 0 797,398 3,418,006 2048 2,438,493 98,774 90,543 0 799,455 3,427,266 2049 2,431,291 98,774 90,543 0 797,398 3,418,006 2050 2,431,291 98,774 90,543 0 797,398 3,418,006 2051 2,431,291 98,774 90,543 0 797,398 3,418,006 2052 2,438,493 98,774 90,543 0 799,455 3,427,266 2053 2,423,060 322,046 91,572 34,983 11,398,154 14,269,814 2054 542,230 1,100,923 150,219 4,172,190 1,414,738 7,380,300

-rotals 484,592,351 154,822,699 24,402,421 57,103,950 95,922,289 816,843,710 Page 13 of 13