ML20155G959
| ML20155G959 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 11/03/1998 |
| From: | Maine Yankee |
| To: | |
| Shared Package | |
| ML20155G948 | List: |
| References | |
| NUDOCS 9811090269 | |
| Download: ML20155G959 (5) | |
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ATTACHMENT B The following pages are replacement pages to the PDSAR which was submitted on August 27,1997 (MN-97-99)
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9811090269 981103 PDR ADOCK 05000309 r,
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Maine vankee Atomic Power Station Post-Shutdown Decommbsloning Activities Report V.
DECOMMISSIONING COST ESTIMATE The Site-Specific Maine Yankee decommissioning cost estimate (Reference 7) summarized on the attached table was prepared by TLG Services Inc., a specialty contractor in the field, October 1997.
The methodology used by TLG to develop the decommissioning cost estimate follows the basic approach originally advanced by the Atomic Industrial Forum (now Nuclear Energy Institute) in their program to develop a standardized model for decommissioning cost estimates. The results of this program were published as AIF/NESP-036, GUIDELINES for Producing Commercial Nuclear Power Plant Decommissioning Cost Estimates." This document presents a unit factor method for estimating direct activity costs, simplifying the estimating process. The unit factors used in the study reflect the latest available data at the time of the study concerning worker productivity during l decommissioning, including field experience.
I l It should be noted that the scope of previously performed cost estimates does not coincide with the s
scope of the estimate presented here. The definition ofDeconunission" used by the NRC is provided in 10 CFR 50.2:
DECOMMISSION means to remove (as a facility) safely from service and reduce residual radioactivity to a level that permits release of the property for unrestricted use and termination oflicense."
The Commission amplified this definition when it issued the decommissioning rule, by notiny, that:
" Decommissioning activities do not include the removal and disposal of spent fuel which is considered to be an operational activity or the removal and disposal of nonradioactive structures and materials beyond that necessary to terminate the license. Disposal of nonradioactive hazardous waste not necessary for NRC license temiination is not covered in detail by this EIS but would be treated by other agencies having responsibility over these wastes as appropriate."
(53 Fed. Reg. 24018,24019 (June 27,1988)]. Similarly, the generic EIS (Reference 1) notes that these non-radiological wastes are not covered by the EIS, but would be addressed by other agencies.
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l Maine Yankee Atosnic Power Station Post-Shutdown Decommissioning Activities Report i
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The estimate provided in Reference 1, therefore, does not include the costs associated with storing the spent fuel while waiting for the Department of Energy (DOE) to take possession of the stored material; and it does not include the costs associated with restoring the site to a -
"greenfield" condition.
Site Specific Decommissionine Cost Estimate The Site Specific decommissioning cost estimate exceeds that presented in the August 1997 PSDAR submittal. Several factors lead to an increase. For example, certain costs such as soil remediation costs were not included. The original estimate included more optimistic assumptions about DOE's ability to take possession of spent fuel - assuming approximately 10 years of spent fuel storage at Maine Yankee vice the approximately 25 years of spent fuel storage that will be considered under the new cost estimate.
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Because of the relatively short fuel storage period, the earlier study did not consider the l
_ potentially more economical use oflong-term dry cask storage. The costs of siting, constructing and licensing an independent spent fuel storage facility for the dry cask storage of fuel is considered in the revised cost estimate.
l The Site-Specific Cost Estimate value of $508M is expressed in 1997 dollars. If escalated to l
l 1998 dollars at a 4.5% escalation rate, the total is $531M. This value compares to a total of 1
l $531M, which is the estimate currently under review by FERC, less the Texas Compact. On l
l October 22,1998, site licensing decisions by the State of Texas relegated the Texas compact to L
l an uncertain status. Consequently Maine Yankee is not including the cost of the compact in its
[
' l current cost estimates.
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i Maine Yankee Atomic Power Station Post Shutdown Decommissioning Activities Report l
Maine Yankee Summary of Decommissionine Costs m (thotisands of dollars)(2)
Kev Tasks / Milestone Plant Dismantlement Staffing
$91,128 i
LLW Burial
$64,816 I
Equipment Removal
$44,310 LLW Packaging and Shipping
$16,663 Decontamination Activities
$ 6,376 Contingency
$60,265 Other CostsW
$59,719 l
Subtotal
$343,279 ")
Spent Fuel Management Subtotal
$128,677 ")
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Site Restoration (Greenileiding)
Subtotal
$35,701 ")
Total Decommissioning Costs Estimates
$508,000 W ")
i Notes:
(1)
Prompt Decommissioning Technique (DECON)
(2) 1997 dollars (3)
Other costs include insurance, property taxes, energy, NRC and State fees, etc.
l (4)
Sums may not be exact due to rounding to nearest thousand 1
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Maine Yankee Atomic Power Station Post-Shutdown Decommissioning Activities Report REFERENCES 1.
Nureg-0586," Final Generic Environmental Impact Statement on Decommissioning of Nuclear Facilities," dated August,1988 j
2.
" Final Environmental Statement related to operation of Maine Yankee Atomic Power j
Station," dated July 1972 3.
MN-97-89, MY Letter to NRC, " Certifications of Permanent Cessation of Power Operation and Permanent Removal of Fuel From the Reactor," dated August 7,1997 4.
Maine Yankee Atomic Power Station Environmental Report, Supplement One, dated April 19,1972 (MYAPC to AEC) i 5.
NUREG/CR-5849, " Manual for Conducting Radiological Surveys in Support of License Termination" 6.
AIF/NESP-036, " Guidelines for Producing Commercial Nuclear Power Plant Decommissioning Cost Estimates" 7.
MN-98-65, MY Letter to NRC, "10 CFR Part 50.82(a)(8)(iii) Site Specific Decommissioning Cost Estimate and PSDAR Update, dated October 22,1998 l
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