ML20055H469

Forwards Cj Stathas Indicating Estimated Cost for Decommissioning Reactor

ML20055H469
Person / Time
Site:	University of Wisconsin
Issue date:	07/19/1990
From:	Cashwell R WISCONSIN, UNIV. OF, MADISON, WI
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20055H470	List: ML20055H469 ML20055H473
References
NUDOCS 9007260245
Download: ML20055H469 (4)

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T. .- ., University- of- Wisconsin

.t NUCLEAR REACTws 1.ABORATORY ADDRESS

. DEPARTMENT OF NVCLEAR ENGINEERING AND ENGINEERING PHYSICE MFCHANICAL ENGINEERING BUILDlHO PHONE (608) #62 3397 1613 UNIVERSITY AVENUE MADISON 63Fotk16iR -

Re: 10CFR.Pt-50.75 July 19, 1990

'O ' S . Nuclear-Regulatory Commission ATT:- DOCUMENT CONTROL DESK Washington,- DC 20555 lSUBJCCT: License R-74, Docket 50-156; 10CFR Part 50.75 Decommissioning Funding Plan The following information is submitted in response to the requirements of 10CFR Part 50.75 for a decommissioning funding

_ plan. This letter includes a document _ indicating the decommissioning cost estimate and the means used to escalate the cost;untillthe expiration date of the current operating: license.

Also included by reference is a copy of-a submission under

-License 50-156/SNM-116 dated July 16, 1990 and signed (on behalf

'of the Regents of the University of Wisconsin) by C.J.-Stathas,

~GeneraliCounsel~and Ansistant Trust Officer, in which the University of-Wisconsin indicates that,-as a state agency, the funds for decommissioning will be obtained'wben needed.

.The estimate is based on decontamination of the facility and.

returningsit-to unrestricted use within a-three-year period. The funding required-is estimated as $1.2 million in the' year 2000.

Sincerely,

" ' f'evY R. J. .Cashwell, Reactor Director RJC/cke

Enclosure:

UW Nuclear Reactor Decommissioning Cost Estimate Letter signed by C.J. Stathas c:. U.S. NRC, 799 Roosevelt Rd., Glen Ellyn, IL'60137 f $S i r gjdd2

}{90072'60245900739DR/-ADOCK=05000156' ,

6ll PDC

j A UNIVERSITY OF WISCONSIN NUCLEAR REACTOR DECOMMISSIONING COST ESTlilATE The cost analysis that follows is based on NUREG/CR 1756, Technology, Safety and-Costs- of Decommissioning Reference Nuclear Research and Test Reactors,-

including its companion documents.

Cost Category Reference UWNR Estimated Estimated-1981 $ 1981 $ ,

Disposal of radioactive materiale.

Neutron activated material; 16,610 10,800 Reduced by 35% due to larger

, distance:from core to shield (2.4 m diameter yi 2.0 m) and UWNR wall not completely surrounding core.

Also reduced because UWNR core is 1.2 m above pool bottom vs. 0.46 m.

Contaminated materials 60,600 30,300

- Reduced by 50% due to smaller building size, with cooling system and auxiliary equipment compactly housed in one area. Half the assumed rubble volume in reference reactor is outside-the reactor building. In addition, pool concrete is well protected against contamination at UWNR due to liner and epoxy coatings.- Finally, the contamination level at UWNR is extremely-low- even the estimate above would require a major fuel rupture to produce enough contamination to require the

-expenditure indicated.

Radioactive Wastes 9,620 9,620 The' number from the reference document is used unchanged.

Total Disposal Costs 86,290 50,720

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Staff Labor- 530,570 265,285 q

.Our analysis o the work force required for vu,z . facility is 6.8  !

man-years yL. the 12.6 man-year estimate in the reference document.~ r Y Even this.is high, considering,that t the facility.has been sperated, upgraded, maintained, health physics services provided,etc. with a

_ considerably smaller _ staff than ,

indicated for decontamination. In addition, many of the items

indicated as chargeable. in the

' referenced-documentcare normal university overhead duties not borne-specifically for the project in question. . Therefore, the final estimate:is 50% of the value in the .

reference.

Energy'. --

13,790 13,790 The'value used-in the reference document -1 is used unchanged. t

~ Special Tools,and Equipment 21,150 21,150:

The value used in the reference is used ,

-unchanged. ={

Miscellaneous: supplies -

6,210 6,210

.The value used in the reference is used unchanged.

Nuclear Insurance 4,620 4,620 .

The value used.in the reference is used unchanged. <

. License Fees 13,950 0,000 m- It is assumed that the university will remain exempted from the NRC licensing-1- fees, so this ' item is zero for UWNR.

j  : Subtotal 676,580. 361,775 .,

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- Contingency (25%) 169,150 90,445 TOTAL 845,730 452,220 ,

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Note: . Cost of spent fuel shipment assumed.to-be paid per current contract

.with US DOE. Cost for' facility demolition and site restoration is not included, since it is_ expected that, once the reactor is decontaminated, the

. site uill be used for other university activities.

Assuming the decommissioning begins in June, 2000 when the present operating i license-expires, the cost. identified above should be increased by 5%'per year. The 5% figure-is based on the_ preponderance;of' salary in-the estimates T -above'and recent history on-pay rates for academic staff and civil: service employees of the university. Therefore, in the next 20 years.the prices above are expected to escalate by 'a factor of 2.65; LTherefore, the. decommissioning cost of: the University of Wisconsin Nuclear Reactor is expected-to' be $1.2 million in the year 2000.

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