ML20204H108

Forwards Updated Decommissioning Funding Plan & Financial Assurance for License SNM-142

ML20204H108
Person / Time
Site:	07000152
Issue date:	02/23/1999
From:	Burns K PURDUE UNIV., WEST LAFAYETTE, IN
To:	NRC
References
NUDOCS 9903290010
Download: ML20204H108 (12)

Text

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PURDUE U N IV E R'SITY i

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1 Executive VicE PRESIDENT AND TREASURER February 23,1999 l

U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Re: Docket 70-152 i

License SNM-142 Gentlemen:

i Enclosed is the updated Decommissioning Funding Plan and Financial Assurance for our j

NRC License SNM-142. The total costs for decommissioning with a 25% contingency is estimated to be $137,563. This will return the affected facilities to conditions for i

unrestricted use. As specified in the enclosed document, this amount will be adjusted at each. license renewal to ensure that inflation, changes in site conditions, and other relevant factors are taken into account.

As Executive Vice President and Treasurer of Purdue University, I certify that the funds will be available when needed to conduct the activities necessary to permit facilities to be returned for unrestricted use. If you have any questions regarding this information, please contact our Radiation Safety Officer, James F. Schweitzer at 765.494.2350.

Sincerely, k....J I y-[

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Kenneth P. Burns" Executive Vice President And Treasurer

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L Decommissioning Funding Plan for SNM-142 License Purdue University 1

1. IIistorical Radionuclide Possess' ion, Use, and Surveys.

A. The use of special nuclear material under this license has been primarily in the form of sealed sources and uranium contained in scaled fuel rods. b enriched uranium rods have not been opened. however, some of the natural uranium rods have been opened and the uranium oxide pellets removed. The sealed sources (PuBe) and calibration sources are all intact and have been leak tested as appropriate.

B. Routine surveys of the areas where special nuclear n.aterial (SNM) is used have been performed on a regular basis. No contamination that would indicate leaking fuel rods has been found. Also no sealed sources have shown any indication ofleakage. No manipulation of material in unsealed form has been done in this area for in excess of two years. Wipe tests over this period have found no removable contamination and direct radiation measurements have found no fixed contamination.

C. The only activity with unsealed radioactive material has been the removal of UO, 1

pellets from fuel rods. The uranium fuel rods have all been opened in a glove box specially designed for that purpose with exhaust air filtered by a llEPA filter. During operation, air samples have been taken to ensure the integrity of the llEPA filter. All samples analyzed have been negative for uranium in the air exhausted to the ductwork and environment.

D. The Cf-252 neutron source used in the suberitical assembly is stored below floor level and raised during experiments. The concrete surrounding the source has most likely a small amount of activation products produced from exposure to neutrons during its storage period.

All uranium with the exception of small amounts is owned by the Department of Energy (DOE), The research activities associated with the natural uranium and 1.3% and 4.8%

enriched uranium fuel have ceased. Accordingly, the DOE has been contacted to take possession of this material and we expect DOE to accept this fuel and sources when a facility becomes available. We also would expect that DOE would bear the expense for shipment and costs associated with the return of this material. Activities using the sealed sources and calibration sources will continue under the license.

We have used reference facility estimates found in NUREG/CR-1754 for the preparation of our decommissioning estimate. Appropriate modifications will be made due to the unique nature of the facility and the low potential for facility contamination.

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2. Description of Facilities The principal area for use and storage of special nuclear material is the Physics Building Room B-28 (Attachments 2.1,2.2). The suberitical assembly (FBBF) is located within a concrete and concrete block room (B28C) within the larger room. A cross sectional view is found in Attachment 2.3. The glove box is located m ham B28.

Additional locations that have been exclusively fbr storage of fuel rods are Duncan Annex Rooms B-84 and B-77A (Attachment 2.4).

These locations would not be decommissioned since they are used for activities involving other byproduct *. terial and source materials licenses.

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3. Scope of Decommissioning Activities The activities of decommissioning will be focused on a few specific items. listed below:

A. Dismantling Room B28C to Allow for Removal of FBBF and Cf-252 Source Prefaticated concrete beams make up the roof portion of Room B28C.

To remove the converters containing fuel rods and other iteme 'bese beams will be removed. An existing overhead crane will remove the beams and converter assembly l

B. Opening Sealed Converters j

i Two converters containing fuel rods may be opened to remove the rods.

The welds will be cut and the rods packaged for shipment.

C. Removing the Cf-252 Sources j

The four Cf-252 sources will be removed from the storage area (concrete) and placed in an appropriate shipping container for return to DOE.

i D. Removal of Concrete Storage Cell for Disposal The area below floor level where the Cf-252 neutron source is stored is composed of six prefabricated concrete blocks. The central block is expected to be activated from exposure to the neutron source. This block l

and the others will be removed and disposed as appropriate.

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l E. Decontamination and Disposal of Glovebox The interior of the glovebox is contaminated with natural uranium. The glovebox and associated ductwork will be decontaminated and/or disposed sfin a manner that minimizes radiation exposure and cost F. Shipment of Fuel and Sources to DOE j

The preparation of fuel for return to DOE will require the material control and accounting procedures be followed. Surveys and documentation to l

ensure compliance with DOT regulations will be necessary.

G. Final Survey and Release of Facility for Unrestricted Use The above activities are expected to remove all radioactive material from the facility.

Final direct radiation measurements and surveys for removable contamination will be performed.

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4. Costs of Decommissioning The following individuals may be necessary to provide services in order to decommission j

Purdue University facilities. The salaries and estimated worker costs (including 50%

overhead) are ::sted below:

Position Basic Salary (S/yr)

Worker Cost ($/yr)

Radiation Safety Officer 70,000 105,000 IIcalth Physicist 40,000 60,000 Technician 30,000 45,000 Foreman 40,000 60,000 Laborer 25,000 37,500 Crafisman 35,000 52,500 A. Planning and Preparation Preparation of Documentation for Regulatory Agencies Radiation Safety Officer

.08 yr x $105,000 =

$8400 Health Physicist

.04 yr x $60,000 =

$2400 Subtotal

$10800 Development of Work Plans and Equipment Procurement Radiation Safety Officer

.04 yr x 5105,000 =

$4200 Foreman

.08 yr x $60,000 =

$4800 Subtotal

$4000 Development and Presentation of Training Health Physicist

.04 yr x 560,000 =

$2400 Subtotal

$2400 Characterization of Radiological Condition of the Facility Radiation Safety Officer

.02 yr x $105,000 =

$2100 Health Physicist

.08 yr x $60,000 r

$4800 L

Technician

.16 yr x $45,000 =

$7200 Subtotal

$14,100 Total

$36,300

B. Decontamination and/or Dismantling Facility Components Component Fate Glove Box Decon/ Disposal Ductwork Disposal IIEPA Filter Disposal Misc. Tools Decon/ Disposal Concrete Neutron Shield Disposal Health Physicist

.04 x $60,000 =

$1500 Foreman

.04 x $60,000 =

$1500 Craftsman

.16 x $52,500 =

$8400 Laborer

.32 x $37,500 =

$12000 Equipment and Supplies

$13000 Total

$36400 C. Packaging. Shipment, and Disposal of Low-Level Waste Radiation Safety Officer

.04 x $105,000 =

$4200 Health Physicist

.08 x $60,000 ='

$4800 Technician

.08 x $37,500 =

$3000 Laborer

.08 x $37,500 =

$3000 Subtotal

$15000 Low-Level Waste Glove box 12 x $300/ft'

$3600

=

Ductwork 20 x $300/ft'

$6000

=

Concrete shield 15 x $300/ft'

$4500

=

Miscellaneous 15 x $300/ft'

$4500

=

Subtotal

$18600 Total

$33600 D. Final Radiation Sun'ey Radiation Safety Officer

.01 x $105,000 =

$1050 Health Physicist

.02 x $60,000 =

$1200 Technician

.04 x $37,500 =

$1500 Total

$3750 L

5. Summary The decommissioning funding estimate above was prepared using NUREG/CR-1754.

The estimates were modified to fit the specific features of our facility. Operating history has shown no contamination incidents and routine surveys demonstrate that no contamination is present. No sinks or drains are present in the facility that would allow for the accumulation of radioactive material. One glove box (HEPA filtered) is present but no additional hoods are present at the facility.

We believe that the estimate is sufficient to return the facility to conditions for unrestricted use. However, as recommended by NUREG/CR-1754 a 25% contingency will be added to account for unforeseen expenses during the process. The cost estimate will be reviewed at each license renewal to ensure that inflation, changes in site conditions, decommissioning procedures, and the cost of waste disposal are taken into account. ' When necessary, the estimate will be changed and our Statement of Intent adjusted to ensure the proper financial mechanism is on file with the Nuclear Regulatory Commission.

Total Cost Estimate:

l Planning and Preparation

$36,300 Decontamination Dismantling Components 536,400 Packaging, Shipment, and Waste Disposal

$33.600 Final Radiation Survey

$ 3750 Contingency (25%)

$27,513 Total S137,563 l

9 Attachm:nt 2.1 I

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