ML13003A075

Enclosure 1 - Decommissioning Study of the Maine Yankee Independent Spent Fuel Storage Installation

ML13003A075
Person / Time
Site:	Maine Yankee
Issue date:	12/17/2012
From:	Pizzella C Knight Cost Engineering Services
To:	Office of Nuclear Material Safety and Safeguards, Maine Yankee Atomic Power Co
References
OMY-12-073
Download: ML13003A075 (26)

Text

OMY-12-073 ENCLOSURE 1 DECOMMISSIONING STUDY OF THE MAINE YANKEE INDEPENDENT SPENT FUEL STORAGE INSTALLATION December 2012

Decommissioning Study of the Maine Yankee Independent Spent Fuel Storage Installation Prepared for Maine Yankee Atomic Power Company Knight Cost Engineering Services, LLC December, 2012

Knight Cost Engineering Services, LLC KCES 2012-8W, Rev. 0 TABLE OF CONTENTS

1.0 INTRODUCTION

3 2.0

SUMMARY

4 3.0 DECOMMISSIONING COST ESTIMATING METHODOLOGIES................7 4.0 ASSUMPTIONS..............................................................................

8 5.0 SCHEDULES...............................................................................

10 6.0 PROJECT MANAGEME NT...........................................................

12 6.1 UTILITY STAFF.......................................................................................

12 6.2 DECOMMISSIONING GENERAL CONTRACTOR...........................................

12 6.3 SECURITY..............................................................................................

13

7.0 REFERENCES

............................................................................. 14 APPENDIX A....................................................................................... is Page 2 of 15

Knight Cost Engineering Services, LLC KCES 2012-800, Rev. 0

1.0 INTRODUCTION

The purpose of this study is to identify the costs associated with the decommissioning of the Maine Yankee (MY) Independent Spent Fuel Storage Installation (ISFSI).

This estimate includes only the structures, systems and land within the NRC licensed area. The MY ISFSI is located within the site boundary of the former Maine Yankee nuclear power plant in the Town of Wiscasset, Maine. The site is approximately 1200 feet north of the former plant site in an area used as a vehicle parking lot. The NAC-UMS fuel storage and transport canister system chosen by MY is licensed by the NRC for both storage and transportation.

The ISFSI consists of the storage system and concrete storage pads, a Protected Area (PA) for spent fuel storage and a Security/Operations Building for equipment and staff. The PA contains 16 3 foot thick concrete pads, each 31 feet by 31 feet. There are 64 dry storage casks on the 16 pads, 60 for spent fuel and four for sections of the reactor vessel internals that are classified as Greater Than Class C (GTCC) waste. Each vertical concrete cask has a two and a half-inch steel liner surrounded by 24.25 inches of reinforced concrete.

Page 3 of 15

Knight Cost Engineering Services, LLC KCES 2012-800, Rev. 0 2.0

SUMMARY

Decommissioning is the safe removal of a facility or site from service and the reduction of radioactivity to a level that permits either the release of the property for unrestricted use and NRC license termination; or a restricted release of the property and NRC license termination.

This estimate includes all costs incurred to release the property for unrestricted use.

On June 17, 2011, the NRC published a final rule amending its regulations to improve decommissioning planning. The rule will become effective on December 17, 2012 and requires compliance by March 31, 2013. This rule will require licensees to report additional details in their decommissioning cost estimate. To assist in the implementation of the new rule, the NRC issued NUREG-1757, "Consolidated Decommissioning Guidance, Financial Assurance, Recordkeeping and Timeliness."

NUREG-1757 does not apply to licensees under 10CFR Part 50 nor does it eliminate the need to follow Regulatory Guide 1.202 or NUREG-1713.

It does provide additional information to support the development of the cost estimate. This cost estimate was prepared in accordance with the guidelines provided in RG 1.202 and NUREG-1713.

In addition, it does take into account the guidelines identified in NUREG-1757.

NUREG-1757 specifies that a contingency of 25% is to be included in the estimate. This estimate takes exception to this contingency level for two reasons.

First, the estimate is conservative in that the entire storage pad, concrete overpacks and overpack liners are assumed to be disposed of as potentially contaminated. Second, the MY site has recently been successfully decommissioned. Many of the key personnel involved in that project remain at the MY ISFSI.

The lessons learned from that project will be incorporated in the MY ISFSI decommissioning. For this reason it is felt that a 10% contingency is adequate to cover unknown and unplanned occurrences.

The total cost including contingency is $25.2 million, 20.4 million for radiological removal and

$4.8 million for non-radiological removal. Table 2-1 provides a summary of costs. Cost details are provided in Appendix A TABLE 2-1

SUMMARY

OF COSTS Non-Radiological radiological Total Cost Removal $

Removal $

Grand Total Building

$25,170,039

$20,390,710

$4,779,329 Tax on General Contractor

$0

$0

$0 General Contractor with contingency

$16,796,626

$13,607,254

$3,189,372 Page 4 of 15

Knight Cost Engineering Services, LLC KCES 2012-800, Rev. 0 Site Costs with contingency

$8,373,414

$6,783,456

$1,589,958 General Contractor

$15,269,660

$12,370,231

$2,899,429 Site Costs MY ISFSI

$7,612,194

$6,166,778

$1,445,416

$22,881,854

$18,537,009

$4,344,845

$13,641,025

$11,050,844

$2,590,181 PERIOD DEPENDENT COSTS 1.1 1.2 MY Site Costs 1.1.1 Project Management 1.1.2 Security Staff 1.1.3 Fees 1.1.4 Insurance 1.1.5 Legal 1.1.6 Property Taxes General Contractor 1.2.1 Decommissioning General Contractor 1.2.2 Waste Packaging Crew 1.2.3 Equipment & Materials

$7,612,194

$3,070,502

$2,047,193

$687,000

$604,500

$200,000

$1,003,000

$6,028,831

$3,163,249

$999,410

$1,866,172

$6,166,778

$1,445,416

$556,551

$489,717

$162,024

$812,549

$4,884,066

$130,449

$114,783

$37,976

$190,451

$1,144,765 ACTIVITIES

$9,240,829

$7,486,165

$1,754,664 1.3 1.4 1.5 1.6 1.7 Project Engineering 1.3.1 Procedure Development and Review - Offsite Preparation of QA and Safety Documents - Offsite (in 1.3.2 parallel with 1.2.1)

Site Mobilization and General Employee Training (GET) 1.4.1 Site Mobilization 1.4.2 General Employee Training 1.4.3 Site Specific Training Site Preparation - Performed by Staff 1.5.1 Initial Site Survey 1.5.2 Setup work areas 1.5.3 Decontamination Readiness Review Disconnect all utilities to work areas.

1.6.1 Electrical 1.6.2 Ventilation 1.6.3 Piping Removal inside fences 1.7.1 Remove compacted gravel 1.7.2 Remove VCCs 1.7.2.1 Exterior Concrete 1.7.2.2 Steel liner 1.7.3 Remove Concrete Pad 1.7.4 Remove Security Fence 1.7.5 Remove Light Towers Removal outside fences

$18,639

$9,319

$9,319

$15,099

$3,539

$89,816

$21,580

$62,375

$5,860

$10,916

$5,458

$2,729

$1,364

$1,364

$7,851,986

$370,409

$5,043,526

$3,195,666

$1,847,861

$2,300,975

$61,131

$75,945

$1,205,264

$72,761

$8,843

$4,422

$7,344,501

$5,043,526

$0

$2,300,975

$17,054

$2,073

$1,036

$507,484

$370,409

$0

$0

$61,131

$75,945

$1,205,264 1.8 Page 5 of 15

Knight Cost Engineering Services, LLC KCES 2012-800, Rev. 0 1.8.1 Security/Operations Building

$549,008

$549,008 1.8.2 Remove paved area inside nuisance fence

$84,637

$84,637 1.8.3 Remove nuisance fence

$67,391

$67,391 1.8.4 Miscellaneous Pads

$76,849

$76,849 1.8.5 Miscellaneous structures

$126,572

$126,572 1.8.6 Remove buried utilities

$139,868

$139,868 1.8.7 SOB electrical service

$8,021

$8,021 1.8.8 Remove road inside licensed area

$137,895

$137,895 1.8.9 Remove vehicle barriers

$15,022

$15,022 1.9 Final Site Survey Strueture gone - By DGC Staff

$25,000

$20,253

$4,747 1.9.1 Prepare Final Status Survey Plan 1.9.2 Soil Sampling 1.9.3 Direct Survey 1.9.4 Sampling Analysis 1.9.5 Prepare Final Status Survey Report 1.10 Orlse Site Release Confirmation 1.11 Outside areas

$8,712

$8,712 1.11.1 Backfill, grade and seed

$8,712

$8,712 1.12 Demolition Crew Demobilization

$15,720

$12,735

$2,985 1.13 Final Project Report -Offite

$9,319

$7,550

$1,770 Page 6 of 15

Knight Cost Engineering Services, LLC KCES 20124M, Rev. 0 3.0 DECOMMISSIONING COST ESTIMATING APPROACH Two types of costs were determined in this estimate: activity costs and level of effort costs. The activity costs were developed utilizing a unit cost factor approach. Site material quantities for concrete, steel and equipment where developed from site specific drawings. Productivity factors were applied to these quantities to determine activity durations. Labor crews were developed and applied to the material quantities to determine labor costs and person-hours. The activity durations were used to develop a project schedule.

The level of effort costs such as equipment rental and the General Contractor (GC) staff were developed based on the project schedule duration. A rental equipment file was developed for the construction effort. The GC staff is assumed to be on-site for the duration of the project. The Oversight staff cost is another level of effort cost that is included in the cost estimate.

Bulk removal of the storage pad and concrete storage casks is assumed to be performed using an excavator with a hydraulic hammer attachment. The steel liner will be segmented utilizing torch cutters. All of this waste will be trucked off-site for processing. This leads to a large disposal volume; however, at a lower rate for bulk processing than for direct burial. In addition, there will be far less characterization and iterative decontamination. Clean structures will be demolished using mechanical means and disposed of at a local landfill.

In addition to the removal labor there is a dedicated waste packaging crew included in this estimate. This crew will consolidate, package and prepare containers for transportation. The waste packaging is estimated to remain on site for the duration of the project. This crew consists of 2 laborers; 1 Health Physics Technician; 1 Equipment Operator and I Foreman.

Page 7 of 15

Knight Cost Engineering Services, LLC KCES 2012-800, Rev. 0 4.0 ASSUMPTIONS Following is a list of assumptions developed by KCES in completing this study.

These assumptions are based on the most current decommissioning methodologies and site-specific considerations.

1. Component quantities were developed from actual plant listings.

2. Concrete volumes were developed from plant drawings.

3. The oversight staff is assumed to be the similar size and configuration as it is currently.

4. The oversight staff positions and costs were supplied by the Company and represent July, 20.12 salary and benefit data.

5. Subcontractor base labor rates and fringe benefits were taken directly from the 2012 R. S. Means Heavy Construction Cost Data and adjusted to Maine based on the City Cost Indexes for Augusta, ME.

6. Activity labor costs do not include any allowance for delays between activities, nor is there any cost allowance for craft labor retained on-site while waiting for work to become available.

7. All skilled laborers will be supplied locally and hired by the Decommissioning General Contractor (DGC).

8. The cost for Utility personnel assisting the DGC to develop decommissioning activity specifications is included in the Utility Staff costs.

9. The separate DGC staff salaries, including overhead and profit, were determined by KCES.

10. Transportation costs are based on actual mileage from MY to Memphis, TN processing facility utilized in the estimate.

11. The ISFSI Concrete Pad, VCC exterior concrete and VCC liner steel are assumed to be Class A waste. This waste will be disposed of at the Studsvik processing facility in Tennessee. A disposal rate of $0.13 per pound has been used in this estimate and is based on information provided by Studsvik.

12. The following buildings are disposed of as Clean waste in local landfill. A disposal rate of $91.80 per ton has been used in this estimate and is based on information provided in the 2012 R. S. Means Building Construction Cost Data.

Compacted gravel around pads Security Fence Page 8 of 15

Knight Cost Engineering Services, LLC KCES 2012-800, Rev. 0 Light Towers Security/Operations Building Paved area inside nuisance fence Nuisance fence Miscellaneous Pads Miscellaneous structures Buried utilities SOB electrical service Road inside licensed area Vehicle barriers

13. All costs used in these calculations were current on July, 2012.

14. The costs of all required safety analyses and safety measures for the protection of the general public, the environment, and decommissioning workers are included in the cost estimates.,

15. It is assumed that all UMS canisters containing both spent fuel and GTCC will have been removed from site prior to the start of decommissioning.

16. Property taxes are included in the estimate at the current cost of $1,003,100 per year.

17. Fees are included in the estimate at the current cost of $687,000 per year.

18. Insurance costs are included in the estimate at the current cost of $604,500 per year.

19. Legal costs are included in the estimate at the current cost of $200,000 per year.

20. The decommissioning will be performed under the current regulations.

21. Removal of the pad and concrete overpacks will be perfbrmed in Tyvek coveralls.

Productivity rates have been adjusted to account for this.

22. The removal of the berm is not included in the estimate.

23. No subsurface material is assumed to require remediation regarding radionuclides. This assumption is justified because: 1) the ISFSI area was confirmed to be clean of radiological contaminants prior to the construction of the ISFSI; 2) the ISFSI area will be maintained clean of loose radiological contaminants during the storage period; 3) the irradiated fuel and GTCC waste are stored in sealed canisters; 4) nuclear activation of the VCCs, VCCs liners, and ISFSI pad are anticipated; the activation products will remain fixed during the storage period; and 5) if contamination of subsurface material occurs during decommissioning activities, the contamination is expected to remain below the decommissioning criteria of 25 millirem per year Total Effective Dose Equivalent Page 9 of 15

Knight Cost Engineering Services, LLC KCES 2012-8W, Rev. 0 5.0 SCHEDULE A scenario-specific schedule has been developed for estimate.

Activity durations were determined based on the unit cost factor approach. Plant material inventory quantities were developed from site specific material. Unit rates for cost, man hours and schedule hours were applied to the material quantities. From this calculation the removal or decontamination cost, total man hours and total schedule hours were determined for an activity.

The schedule hours are then entered into the schedule to determine project duration. Two work crews are assumed for the concrete pad and concrete overpacks. All other work was assumed to be performed by one crew. Work outside of the security fence will be performed in parallel with the work inside the fence. The total project duration is 16.79 months.

Figure 5-1 provides the detailed decommissioning schedule.

Page 10 of 15

Knight Cost Engineering Services, LLC KCES 2012-800, Rev. 0 Figure 5-1 Project Schedule ID Task ms I

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Page 11 of 15

Knight Cost Engineering Services, LLC KCES 2012-800, Rev. 0 6.0 PROJECT MANAGEMENT There are three components to project management during decommissioning, Oversight Staff (staff), Decommissioning General Contractor Staff (DGC) and Security. The person levels for each are identified below.

6.1 OVERSIGHT STAFF The staff size is currently at a level of 19 and is assumed to be maintained at this level and at a similar configuration during the decommissioning. In addition, one final status survey resource will be added and one licensing person will be added to assist in the decommissioning.

The staff will provide DGC oversight as well as maintain license compliance. Table 7-1 provides a summary of this staff.

TABLE 6-1 OVERSIGHT STAFF Staff Number Chief Nuclear Officer I

Cask Relicensing Project Manager I

Workers Concerns Manager I

Business Manager 1

ISFSI Manager 2

ISFSI QA Manager 1

Regulatory Affairs 1

Public/Government Affairs 1

General Counsel 1

Business Administrator I

Treasurer 1

Accountant 1

Benefits Manager 1

IT Services I

ISFSI Operations Specialist 2

Program Manager 1

ISFSI Administrator 1

Licensing Engineer I

Security Manager 1

21 6.2 DECOMMISSIONING GENERAL CONTRACTOR The DGC will be responsible for all of the physical work. The staff will oversee the work crews.,

schedule work and supply HP support. The DGC will be responsible for finishing the project on time and on budget. Table 7-2 provides a summary of the DGC staff.

Page 12 of 15

Knight Cost Engineering Services, LLC KCES 2012-800, Rev. 0 TABLE 6-2 DGC STAFF 2012 Person Base Position Salary Level Project Superintendent

$148,000 1.00 QA Auditor/inspector

$70,000 1.00 Health & Safety Supervisor

$117,000 1.00 Packaging/Shipping Specialist

$70,000 1.00 Cost Control Accountant

$55,000 1.00 Scheduler II

$60,000 1.00 Demolition Specialist

$86,000 1.00 Industrial Safety

$86,000 1.00 Engineering Supervisor

$117,000 1.00 Project Supervisor

$79,000 1.00 Decontamination Tech

$55,000 2.00 Instrumentation Tech

$55,000 1.00 Tool Crib Attendant

$43,000 1.00 14.00 6.3 SECURITY Once spent fuel has been removed from the site the security force will be significantly reduced.

This estimate assumes a force of 13 guards and one manager. This will allow a security person level of 5 guards during work time and two guards all other times. The guard force was assumed to consist of various levels of guards and the rate used has been adjusted accordingly.

Page 13 of 15

Knight Cost Engineering Services, LLC KCES 2012-800, Rev. 0 7.0 References

1. R.S. Means, Inc, Building Construction Cost Data, Kingston, Massachusetts, 2012.

2. Regulatory Guide 1.202, "Standard Format and Content of Decommissioning Cost Estimates for Nuclear Power Reactors"

3. NUREG-1713, "Standard Review Plan for Decommissioning Cost Estimates for Nuclear Power Reactors"

4. NUREG-1757, "Consolidated Decommissioning Guidance, Financial Assurance, Recordkeeping and Timeliness" Page 14 of 15

Knight Cost Engineering Services, LLC KCES 2012-800, Rev. 0 APPENDIX A Page 15 of 15

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OMY-12-073 ENCLOSURE 2 CERTIFICATION OF FINANCIAL ASSURANCE December 2012

CERTIFICATION OF FINANCIAL ASSURANCE NRC Licensee:

Maine Yankee Atomic Power Company Maine Yankee Independent Spent Fuel Storage Installation NRC License No. DPR-36 (NRC Docket Nos. 50-309 and 72-30) 321 Old Ferry Road Wiscasset, ME 04578-4922 Issued to: U.S. Nuclear Regulatory Commission Certification:

I hereby certify that Maine Yankee Atomic Power Company is the licensee for the Maine Yankee Independent Spent Fuel Storage Installation (Maine Yankee ISFSI) and that I, the undersigned, am authorized to provide this Certification of Financial Assurance with respect to the radiological decommissioning of the Maine Yankee ISFSI.

During the operation of this ISFSI, spent nuclear fuel and Greater than Class C waste will be stored at the Maine Yankee ISFSI in storage casks licensed under 10 CFR 72. Pursuant to contracts with the Department of Energy the spent fuel and associated casks will ultimately be removed from the ISFSI location, and Maine Yankee will dispose of other radiological waste in accordance with NRC regulations, at which time the Maine Yankee ISFSI will be decommissioned in accordance with NRC regulations.

I further certify that financial assurance in an amount sufficient to fund Maine Yankee ISFSI radiological decommissioning at the time of such decommissioning has been provided, pursuant to 10 CFR 72.30, as described in Enclosure 1 to the letter to which this Certification is attached. That radiological decommissioning funding assurance is premised on a site-specific decommissioning cost estimate and funding methodology described therein, in the amount of:

Maine Yankee ISFSI

$ 20.4 million (inclusive of contingency)

On December 17, 2012, during the final review of this letter and the third-party DCE, a discrepancy in the assumption utilized regarding the thickness of the concrete of the Vertical Concrete Casks (VCCs) was identified. A Condition Report (12-176) was generated to investigate the issue. MY will submit a revised decommissioning funding plan, including a revised DCE, by January 9, 2013.

Carla M. Pizzella I

Maine Yankee Atomic Po r Company Vice President, Chief Financial Officer, and Treasurer Phone (860) 267-6426 x304 Corporate Seal Date

OMY-12-073 ENCLOSURE 3 TOTAL COSTS ASSOCIATED WITH THE MAINE YANKEE ISFSI, INCLUDING COST ESTIMATE FOR MANAGING IRRADIATED FUEL AND GTCC WASTE December 2012

Maine Yankee Atomic Power Company Irradiated Fuel & GTCC Waste Management and ISFSI Decom Estimate Represented in 2013 Dollars Data FERC Summary Sum of 2013 Sum of 2014 Sum of 2015 Sum of 2016 Sum of 2017 Sum of 2018 Sum of 2019 Sum of 2020 Sum of 2021 Sum of 2022 Sum of 2023 Contingency

$429,920

$404,170

$411,670

$437,270

$436,670

$387,920

$411,670

$405,770

$1,252,363

$0

$409,020 Insurance

$464,500

$464,500

$464,500

$464,500

$464,500

$464,500

$464,500

$464,500

$464,500

$0

$791,100 Labor - Non-Manual

$1,712,250

$1,712,250

$1,712,250

$1,712,250

$1,712,250

$1,712,250

$1,712,250

$1,712,250

$1,757,250

$0

$629,500 Labor - Security

$2,111,000

$2,111,000

$2,111,000

$2,111,000

$2,111,000

$2,111,000

$2,111,000

$2,111,000

$2,111,000

$0

$0 Materials & Supplies

$112,547

$85,547

$85,547

$97,547

$88,547

$85,547

$85,547

$97,547

$85,547

$0

$17,500 Miscellaneous

$105,000

$105,000

$105,000

$105,000

$105,000

$105,000

$105,000

$105,000

$105,000

$0

$54,000 Outside Services - A&G

$570,000

$520,000

$520,000

$520,000

$520,000

$520,000

$520,000

$520,000

$520,000

$0

$410,000 Outside Services - Fuel Loading

$0

$0

$0

$0

$0

$0

$0

$0

$2,880,000

$0

$0 Outside Services - ISFSI OP's

$743,000

$1,005,000

$905,000

$1,655,000

$1,655,000

$680,000

$655,000

$775,000

$655,000

$0

$75,000 Outside Services - Legal

$900,000

$200,000

$450,000

$200,000

$200,000

$200,000

$700,000

$450,000

$200,000

$0

$1,300,000 Outside Services - NON-RAD D&D of ISFSI

$0

$0

$0

$0

$0

$0

$0

$0

$4,898,812

$0 Outside Services - RAD D&D of ISFSI

$0

$0

$0

$0

$0

$0

$0

$0

$7,175,000

$13,725,478

$0 Property Taxes

$1,003,100

$1,003,100

$1,003,100

$1,003,100

$1,003,100

$1,003,100

$1,003,100

$1,003,100

$1,003,100

$0

$203,100 Regulatory Fees

$767,000

$767,000

$767,000

$767,000

$767,000

$767,000

$767,000

$767,000

$1,222,000

$0

$585,000 Utilities

$110,000

$110,000

$110,000

$110,000

$110,000

$110,000

$110,000

$110,000

$150,000

$0

$25,000 Grand Total

$9,028,317

$8,487,567

$8,645,067

$9,182,667

$9,170,067

$8,146,317

$8,645,067

$8,521,167

$19,580,760

$18,624,290

$4,499,220 Note 1: The cost of management of irradiated fuel and GTCC waste is calculated as follows:

$112,530,505 Grand Total from Above

($4,898,812) Non-Rad D&D ISFSI

($2090478 Rad D&D ISFSI

$86,731,215 Management of Irradiated Fuel and GTCC Waste Note 2: The cost of RAD and NON-RAD D&D of the ISFSI in 2013 dollars as provided in the columns labeled "Sum of 2021" and "Sum of 2022" is derived by escalating the value of the cost estimates provided in Enclosure 1 by 2.5%.

2013-2023

$4,986,442

$4,971,600

$16,084,750

$18,999,000

$838,423

$999,000

$5,140,000

$2,880,000

$8,803,000

$4,800,000

$4,898,812

$20,900,478

$9,231,000

$7,943,000

$1,055,000

$112,530,505