ML19312E897
| ML19312E897 | |
| Person / Time | |
|---|---|
| Site: | Monticello, Prairie Island  |
| Issue date: | 09/28/1979 |
| From: | Jaworsky M NUCLEAR ENERGY SERVICES, INC. |
| To: | |
| Shared Package | |
| ML19312E898 | List: |
| References | |
| FRN-43FR10370, RULE-PR-30, RULE-PR-40, RULE-PR-50, RULE-PR-70, TASK-FP-902-1, TASK-OS 81A0623, 81A623, 81A623-R1, NUDOCS 8006180101 | |
| Download: ML19312E897 (67) | |
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NUCLEAR ENERGY SERVICES, INC.
PAGE 1 nF 67 I
I DECOMMISSIONING STUDY PRAIRIE ISLAND NUCL R GENERATING PLANT UNITS 1 & 2 PREPARED FOR NORTHERN STATES POWER COMPANY BY NUCLEAR ENERGY SERVICES I
I THIS DOCUMENT CONTAINS P00R QUAL.lTY PAGES E ,
l Project App ca ion Prepared By Dat
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Please place the attached document in the PDR using tiie following file and file points: .
PDR File Related Documents (Select Olie) (Enterifappropriate)
Proposed jule (PR) G e,9c. 66, fo ACRS llinutes No.
Proposed Rule (PR)
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Reg. Guide .
- Draft Reg. Guide Draft Reg. Guide Petition (PRM) Reg. Guide Effective Rule (RM) ~ Petition Effective(PR;1)-(RI1)
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NUCLEAR ENERGY SERVICES. INC. DOCUMENT NO. 81A0623 PAGE 2 OF 67 l
TABLE OF CONTENTS l
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- 1.
SUMMARY
3 B 2. END PRODUCT DESCRIPTION 6 2.1 Introduction 6 J 2.2 Prompt Removal / Dismantling 6 2.3 Safe Storage Entombment 7 I 2.4 Delayed Removal / Dismantling 11 2.4.1 Safe Storage Entombment 11 I
I 2.4.2 2.4.3 Dormancy Delayed Removal / Dismantling 11 13
- 3. COST ESTIMATES 15 3.1 Primary Decommissioning Alternatives f 15 3.2 Combination Alternatives 15 l 3.2.1 Safe Storage Entombment-Delayed Remova:/ Dismantling 15
- 4. SCHEDULE ESTIM ATES 60 l
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- 5. REFERENCES 66 REVISION LOG 67 i
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I NtJOLEAR ENERGY SERVICES, INC. DOCUMENT NO. 81A0623 PAGE 3 OF 67 I
- 1.
SUMMARY
I This report provides cost and schedule estimates of the prompt removal / dismantling, safe storage entombment, and delayed rernoval/ dismantling (af ter safe storage entombment) alternatives for the decommissioning of Prairie Island Units 1 and 2. The estimated cost of I each of these decommissioning modes is presented in 1979 dollars. Interest and escalation have not been applied to these estimates and consequently a direct cost comparison can not be rnade for alternatives that occur at different times. Northern States Power Company will account for these financial aspects in the economic evaluations it will perform in planning for the recovery of Prairie Island decommissioning costs.
Prompt removal / dismantling implies that radioactive materials are removed from the site and all buildings and facilities dismantled immediately af ter shutdown. The dismantling, 4 shipment and burial of activated and contaminated systems is more costly than dismantling of non-activated /non-contaminated systems. This is due to the fact that highly radioactive components must be removed by remote cutting, shipped, and buried under stringent and costly requirements. The time period required to dismantle the plant at shutdown, remove waste and restore the site, is 73 months.
I The safe storage entombment alternative consists of sealing the radioactive components and structures within an entombment barrier at shutdown. Site maintenance costs are provided for security intrusion monitoring equipment, insurance, and facility maintenance to ensure entombment integrity. Safe storage entombment activities require 34 months for comple-tion.
8 USNRC Regulatory Guide i.86 defines safe storage entombment as an open-ended alterna-tive with no provision for ultimate disposal. The period required for radioactive materials I to decay to unrestricted access levels is gene.Oh w Jong to favor safe storage entombment as a viable permanent alternative for power reactors.
I Delayed removal / dismantling consists of safe storage entombment at shutdown, and plant disassembly and di,sposal af ter a dormancy period. For this study, a dormancy period of 100 I years was considered for cost evaluation. Dormancy periods of 30 years and 85 years are discussed generally (i.e. no detaile'J cost estimates have been developed for these dormancy periods).
FORM e NES 20$ 5/79
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I 81A0623 DOCUMENT NO.
I NUCLEAR ENERGY SERVICES, INC.
PAGE 4 OF 67 l
l Af ter 30 years dormancy, the occupational exposure for dismantling radioactive piping and l
systems would be reduced which would reduce the total personnel exposure. However, there would be no significant reduction in dismantling costs. Af ter 85 years dormancy, the j
contaminated piping and components at Prairie Island would decay to unrestricted access levels. Af ter 100 years dormancy, the radioactive materials within the reactor vessel would g have decayed sufficiently to permit removal without sophisticated remote underwater cutting techniques. Therefore, dismantling af ter 85 to 100 years of dormancy is less costly (in 1979 dollars) than prompt dismantling. However, safe storage entombment-delayed dismantling is more costly (in 1979 dollars) than prompt dismantling because of the l
cumulative annual dormancy cost and the initial cost of safe storage entombment.
l The cost estimates for each Prairie Island decommissioning mode considered are summariz-ed below. Prairie Island Nuclear Generating Plant is a two unit plant with facilities shared l between Units 1 & 2. The decommissioning cost estimate for the first Prairie Island unit is based on the single unit site assumption of the AIF/NESP-009 Study (Ref.1). To make the cost estimate for the entire Prairie Island site, additional calculations were performed to determine the cost impact of the second unit. This calculation utilizes the single unit
! decommissioning cost minus reductions for shared engineering costs and costs for removal of shared structures and equipment. A tabulation of second unit decommissioning costs is also provided in the following cost stimate summary. All costs are in 1979 dollars and include a 25% contingency.
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NUCLEAR ENERGY SERVICES, INC. DOCUMENT NO. SIA0623 PAGE 5 OF 67 l
SUMMARY
OF PRAIRIE ISLAND DECOMMISSIONING COST ESTIMATES (In 1979 Dollars, including 25% Contingency)
Prompt Removal / Dismantling First Unit $51,655,000.00 l Second Unit 14,813,000.00 TOTAL $66,468,000.00 Safe Storage Entombment First Unit $14,013,000.00
, Second Unit 1,652,000.00 TOTAL $15,665,000.00 Dormancy (per year)
R First Unit $ 94,400.00 Second Unit 34,200.00 TOTAL $ 128,600.00 l
Safe Storage Entombment-Delay Dismantling 100 Year Dormancy g First Unit $55,517,000.00 g Second Unit 16,645,000.00 TOTAL $72,162,000.00 j B
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I NUCLEAR ENERGY SERVICES. INC. DOCUMENT NO. 81A0623 PAGE 6 OF 67 1
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- 2. END PRODUCT DESCRIPTION
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2.1 INTRODUCTION
l The initial phase of decommissioning activities af ter plant shutdown would be performed by j the existing operating plant staff. These activities would include removal of all fuel and I
f source material from the vessel and storage racks for off-site disposal, in accordance with existing plant technical specifications and procedures. Plant work areas would be cleaned of surface contamination, as required, and all liquid and solid wastes would be removed.
Concurrent with these activitics, Northern States Power would request a possession-only I. license and submit a Decommissioning Plan (Dismantlement Plan) to the NRC for approval in accordance with Regulatory Guide 1.86 (Ref.11).
l 2.2 PROMPT REMOVAL / DISMANTLING Prompt removal / dismantling consists of removing from the site all fuel assemblies, radioactive fluids and waste, and in accordance with an NRC approved Decommissioning Plan, all other materials, structures, components, etc. having activities above acceptec l unrestricted activity levels. The site may then be released for unrestricted use with no requirements for a license. The remainder of the reactor facility may then be dismantled and shipped for disposal.
Prompt dismantling of the entire facility requires that activated components such as vessel internals and associated piping systems must be remotely segmented using equipment such as an arc-saw. The segments must be packaged, shipped, and buried in accordance with l~ Regulatory Guide 1.86, DOT 49CFR173-189 (References 11 and 12, respectively) and in accordance with the burial facility's license. For this cost estimate, all buildings and l structures (reactor, turbine, radwaste, auxiliary fuel handling, resin disposal, screenhouse, machine shops, etc.) are removed from the site to three feet below grade. Non-contaminated concrete rubble may be used on-site for fill of building cavities below grade.
l When all radioactive material has been removed, the site may be restored to its natural contour, landscaped and released for unrestricted use.
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NUCLEAR ENERGY SERVICES, INC. DOCUMENT NO. 81A0623 PAGE 7 OF 67 Prompt removal / dismantling of the entire facility is an irreversible process in which the plant would never again be used for the generation of electricity. Therefore, there are no ongoing environmental obligations or financial burdens that must be borne by the utility af ter dismantling as there are with the safe storage entombment mode of decommissioning.
2.3 SAFE STORAGE ENTOMBMENT Safe storage entombment consists of removing spent fuel and residual operating wastes, j- decontaminating or removing contaminated material and equipment cutside the entombment boundary, and constructing an entombment barrier within the reactor building.
l The entombment boundary proposed for use at the Prairie Island site is within the reactor buildings to limit the plant areas requiring controlled access. The boundary consists of the j reac tor-steam generator shield wall, fuel transfer canal, and adjacent fuel building structural concrete as shown in Figures 1,2, and 3. The structural barriers at this boundary would contain the radioactive reactor vessel and internals, reactor coolant system piping steam generators and pressurizers, incore instrumentation system, and other miscellaneous I, components. All openings in this boundary, including the fuel transfer canal and equipment
{ and access hatches would be sealed with 2 foot thick reinforced concrete slabs to prevent personnel entry.
l All remaining contaminated systems external to the safe storage entombment boundary I
l would be decontaminated or removed for off-site burial in controlled burial grounds. This would include contaminated systems in the reactor, auxiliary radwaste, resin disposal, fuel 1 handling, and turbine buildings. Non-contaminated systems in all buildings would be drained, l de-energized and secured in place.
All systems required during the dormancy period such as fire protection, lighting, radiation
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g and intrusion monitoring would be prepared for continued use. All external doors and y hatches of the buildings en-site would be locked closed. All other accesses to plant buildings l would be secured to prevent unauthorized entry, but would be accessible for periodic inspections.
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NUCLEAR ENERGY SERVICES, INC. DOCUMENT NO. 81A0623 PAGE II OF 67 A final radiation survey would be performed of all plant buildings and grounds outside the safe storage entombment barsier to ensure that there is no radioactive contamination above unrestricted access levels.
2.4 DELAYED REMOVAL / DISMANTLING 2.4.1 Safe Storage Entombment The reactor would be entombed at shutdown as described in Section 2.3. )
2.4.2 Dormancy A dormancy period of 30 years would allow the contamination in reactor auxiliary systems to decay to lower (although still radioactive) levels, and would permit delayed dismantling at reduced occupational exposure. In addition, a recent decommissioning study prepared by Battelle Pacific Northwest Labs as reported in NUREG/CP-0003 (" Boiling Water Reactor," by Richard I. Smith, p.137 Ref.13) states the volume of radioactive waste for burial is essentially unchanged af ter approximately 30 years of dormancy. This study implies that a facility would have to be entombed for approximately 50 years for any significant reduction in waste I volume or disposal costs to be res!! zed. Dismantling of the reactor vessel and '
internals af ter 30 years of dormancy must still be performed using sophisticated I remote tooling. None of the contaminated systems would decay during a 30 year dormancy to 0.4 mR/hr* at I cm exposure rate (selected as criterion for unrestricted use or access based on the precedent set for earlier decommissioning programs and used as the criterion in the AIF Study). It should be noted that the NRC recently proposed a guideline for unrestricted release of decommissioned f acilities of 5 mrem / year absorbed dose to any individual. NUREG/CP-0008, page 273 explains that this dose assumes an individual resides in the facility three years af ter f acility decommissioning for 2000 hours0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br /> per year in an average field of 0.005 mR/hr (one-half natural background). This level of radioactivity begins to approach the lower limits of detectability (0.0025 - 0.005 mR/hr). The 0.4 mR/hr at I cm assumed in this study for calculational purposes, is measured at the component. If the 0.4 mR/hr at I cm For the purpose of this discussion, I mR/hr exposure rate is approximately equal to 1 mrem /hr absorbed dose rate, row . Nes aos s/n
I NUCLEAR ENERGY SERVICES, INC. DOCUMENT NO. 81A0623 PAGE I2 OF 67 is applied to the same pathways analysis used for the NRC guideline of 5 mrem / year, the annual exposure rate would be lower than 5 mrem / year. Exposure rate is approximately inversely proportional to distance for large components, and ;
1 inversely proportional to distance squared for small components. At a habitable '
distance of 100 cm from the component, the field would be at least two orders of I
magnitude lower (0.004 mR/hr) than at I cm. Therefore the 0.4 mR/hr at I cm assumed in the study is approximately the same as the proposed NRC guideline. If an additional three years decay were allowed prior to occupancy (as in the NRC analysis), the 2000 hr/ year dose would be approximately 4 mrem / year.
A dormancy period of 85 years would allow the highest level contaminated system (the steam generator system) to decay to unrestricted' access levels (0.4 mR/hr at I cm). All other contaminated systems are assumed to have decayed to unrestricted access Icvels at this time. Dismantling of the reactor vessel and internals must still be performed by remote tooling.
A dormancy period of approximately 100 years is estimated to provide sufficient time for the radioactive vessel internals to decay to levels low enough to permit manual removal. Specifically, the most highly activated core shroud would decay l
to a contact exposure rate of approximately 300 mR/hr (exclusive of Ni-59 (approximately 30 mR/hr); and niobium 94, which may not be present). This reduced radiation level would eliminate the need for special remote-operated underwater cutting tools, necessary for dismantling at reactor shutdown, to I segment and remove internals and vessel segments. Local supplementary shielding may be required for removal of vessel internals. A 100 year dormancy period is estimated to be sufficient to allow contamination in reactor auxiliary systems , )
(primarily cobalt 60) to decay to unrestricted access levels (0.4 mR/hr at I cm).
The decay process would eliminate the neeo for decontamination of any systems.
I For safe storage entombment there would be no need for a full-time physical security guard force during the dormancy period, since all radioactive material is contained within the entombment barrier. For the purpose of this study, it is )
considered that periodic inspections would be made in accordance with USNRC
. Regulatory Guide 1.85 (Ref.11) as described below.
FORM e NES 20S 5/79
I NUCLEAR ENERGY SERVICES, INC. DOCUMENT NO. RIAOA73 PAGE 13 OF 67 l
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A dormancy period would require monitoring or intrusion and radiation detectors.
i The alarms for these detectors would be installed in either an adjacent manned utility-owned facility, or in local law enforcement agency facilities. These monitor 3 must be inspected and maintained periodically.
l The plant buildings and grounds must be maintained to ensure the integrity of the l
perimeter fence and access doors to the plant buildings. These physical barriers wot 1 be inspected quarterly in accordance with USNRC Regulatory Guide 1.86.
A facility radiation survey would be performed at least quarterly to verify that radioactive materials were being contained within the entombment barriers.
An environmental radiation survey would be performed at least semiannually to verify compliance with all environmental protective requirements.
2.4.3 Delayed Removal / Dismantling
, At the end of a dormancy period, the dismantling and removal phase of the decommissioning program would be initiated. In general, all remaining radioactive structures, systems and components would be removed and shipped to controlled burial sites. The remaining non-radioactive systems and components would be removed and scrapped. All structures would be demolished to a level of 3 feet below grade and non-contaminated concrete would be used on-site for fill. The I disposition of specific structures, systems and components are discussed below.
Access barriers installed or constructed for the entombment alternative must be removed. The concrete entombment barrbr over the vessel, reactor coolant g pumps, steam generators, pressurizer, and fuel transfer canal must be dismantled 185 by controlled blasting.
All non-contaminated piping, valves, pumps and electrice! equipment would be removed from the reactor building and either salvaged or sold for scrap. The overhead crane would be the last piece of equipment to be dismantled within the reactor building. The reactor building would be removed by controlled blasting, g wrecking ball, and tocch cutting.
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I DOCUMENT NO. 81A0623 NUCLEAR ENERGY SERVICES, INC.
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Concurrent with removal of the components in the reactor building, systems non-essential to the dismantling activities may be removed from the remaining buildings on-site. Circulating water pumps, tanks and piping would be removed and I scrapped. The systems essential to dismantling (and which have been maintained during dormancy) such as lighting and ventilation would be secured and removed from each building when they are no longer required to support dismantling.
j Structural steel would be cut into shippable lengths and sold for scrap. Concrete floors, walls and roofs would be removed and used as fill for the building cavities i below grade level. Local sand or soil may be used to fill the remaining foundation cavities to grade level. The site would be graded as required to conform to the I surrounding site contour.
A final radiation survey would be performed to ensure there is no radiation in excess of unrestricted access levels. Upon approval of the final survey, the l USNRC would terminate the possession-only license and. return the site to unrestricted use. ;
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NUCLEAR ENERGY SERVICES, INC. DOCUMENT NO. 81A0623 PAGE 15 op 67
- 3. COST ESTIMATES The basis for the cost estimates was the AIF/NESP-009 study report, "An Engineering Evaluation of Nuclear Power Reactor Decommissioning Alternatives" by W.3. Manion and T.S. LaGuardia (Ref.1). The cost estimates are summarized on Table 3.1. T.he assumptions made concerning the size of the Prairie Island plants relative to the AIF study reference plant, labor rates in Red Wing, Minnesota, shipping distance for waste disposal, cost impacts af ter a 100 year dormancy period, and insurance provisions are listed in Table 3.2. The unit cost factors used in the estimate for Prairie Island are in 1979 dollars and are adjusted to reflect the labor cost in the vicinity of the plant. A list of the cost factors used in this study is shown on Table 3.3.
3.1 PRIMARY DECOMMISSIONING ALTERNATIVES The cost estimates for the primary decommissioning alternative of Prompt Removal / Dis-mantling and Safe Storage Entombment are summarized in Table 3.1, with and withcut a 25% contingency. The costs for each major activity are presented in Tables 3.4 and 3.5.
Table 3.6 lists the notes referenced in the cost tables to explain key elements of specific work activities.
3.2 COMBINATION ALTERNATIVE The cost estimate for the Safe Storage Entombment-Delayed Removal / Dismantling combin-ation decommissioning mode is shown graphically in Figures 4 and 5. It is also summarized in Table 3.1 (with and without contingency). Dismantling af ter 30 year and 85 year dormancy periods are discussed generally in the following section. Dismantling cost advantages and estimated costs following 100 years of dormancy are discussed in detail.
3.2.1 Safe Storage Entombment-Delayed Removal / Dismantling The curves plotted on Figures 4 and 5 graphically represent the costs of various decommissioning alternatives at any point in time. Figures 4 and 5 are useful in representing the times at which reductions in decommissioning costs occur due to technical simplification. The most significant cost reduction breakpoint at 100 years has been calculated and plotted on Figures 4 and 5. Cost reductions at 30 years and 85 years have not been calculated for this report, but their approximate magnitudes are generally discussed in the following paragraphs.
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DOCUMENT NO. 81A0623 NUCLEAR ENERGY SERVICES. INC.
PAGE 16 OF 67 Safe storage entombment with a 30 year dormancy period prior to removal-dismantling does not provide a decommissioning cost advantage from decay of radionuclide inventory. Radiation levels on reactor piping and components would be too high at plant shutdown to decay during the 30 year dormancy to the assumed L unrestricted release criteria of 0.4 mR/hr at I cm. None of the conuminated systems would decay to unrestricted access levels and would therefore require
{ shipping to and burial at a controlled burial site with the associated undistributed overhead costs. Accordingly, there would be no significant dismantling cost reductions from delaying dismantling for 30 years. The 30-year delayed dismanti-ing costs would be greater than the prompt dismantling cost (in 1979 dollars)
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b'ecause of the annual maintenance and surveillance cost of $128,600 for 30 years, and the additional expense of entombing the facility at shutdown.
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The first removal-dismantling cost reduction (not calculated for this report and, therefore, not shown on Figures 4 and 5)is expected to occur at 85 years based on the AIF study results when the system with the highest contamination level decays l
to assumed unrestricted access levels (0.4 mR/hr at I cm) and does not have to be decontaminated, shipped and buried. The controlling system in this case is the i f steam generator system which has an estimated initial contact surface exposure rate of 31 R/hr primarily frora Cobalt-60 contamination. It takes approximately 85 years for the Cobalt-60 in this system to decay to 0.4 mR/hr, at which time a I dismantling cost reduction is possible. This reduction results from the reduction of decontamination, shipping and burial costs, and from sin.;lified concrete removal using conventional removal techniques at a lower cost ($95/yd3 vs $355/yd3),
These reductions cre associated with critical path activities, and accordingly l reduced period dependent undistributed costs are also included.
The second removal / dismantling cost reduction occurs at approximately 100 years, j The 100 year cost reouction is estimated to be approximately a factor of 2 larger I th'an the 85 year cost reduction discussed above. At this time, costs change due to B
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NUCLEAR ENERGY SERVICES, INC. DOCUM ENT NO. 81A0623
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the simplified removal of the vessel and internals and reduced burial and shipping costs. Simplified removal is possible because the most radioactive internals (top guide) would have decayed to a contact dose rate of approximately 300 mR/hr*.
The following items would decrease in cost as a result of approximately 100 years L Co-60 decay:
Unit I Unit 2
{ item Cost Decrease Cost Decrease
('.vithout contingency) (without contingency)
F
- 1. Vessel remote tooling $ 837,600.00 $ 0.00
- 2. Iniernals cutting (includes $ 152,300.00 152,300.00 I shipping, burial)
- 3. Vessel cutting (includes $ 145,500.00 145,500.00 l
shipping, burial)
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4.
5.
Decontamination Contaminated concrete removal 416,900.00 985,000.00 416,900.00 177,800.00 i
- 6. Shipping (piping, components $ 1,868,800.00 151,900.00 structures) l 7. Burial (piping, components, $ 1,325,000.00 432,000.00 structures)
- 8. Undistributed costs $ 5,238,500.00 1,179,600.00 TOTAL DECREASE $10,969,600.00 $ 2,656,000.00 l
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- Arbitrarily selected as the criteria for which manual removalis considered feasible.
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NUCl. EAR ENERGY SERVICES, INC. DOCUMENT NO. 81A0623 PAGE 18 OF 67 b
This reduces dismantling costs (immediately following entombment) from $45.8*
million to $32.1** million for Prairie Island Unit 1 (after 100 years). For Prairie Island Unit 2, the dismantling cost (immediately following entombment) drops from
$14.9* *
- million to $11.6* * *
- million (af ter 100 years of radioactive decay). The total cost for safe storage entombment-delayed removal / dismantling of both Prairie Island units af ter 100 years of dormancy is $72.2 million in 1979 dollars (i:.-cluding a 25% contingency).
This is calculated (including 25% contingency) as follows (see page 19 for definitions of component numbers):
(41,324,200 - 4,153,300 - 607,600 + 60,000X1.25) = $45,779,100.00 This is calculated (including 25% contingency) as follows (see page 19 for definitions of component numbers):
( (41,324,200 - 4,153,300 - 607,600 + 60,000 - 10,969,600)(1.25) = $32,067,100.00 1
- *
- This is calculated (including 25% contingency) as follows (see page 20 for definitions of component numbers):
(11,850,700 + 60,000X1.25) = $14,888,400.00
- * *
- This is calculated (including 25% contingency) as follows (see page 20 for definitions of
{ component numbers):
(11,850,700 + 60,000 - 2,656,000)(1.25) = $11,568,400.00 t
L FORM 8 NES 20$ S/79 F
I
I DOCUMENT NO. 81A0623 NUCLEAR ENERGY SERVICES. INC.
l lg PAGE 19 OF 67 m._
The calculations used to determine the costs of safe storage entombment-delayed dismanti-ing (af ter 100 years of dormancy) are shown below:
I For Unit 1
- 1. Cost to entomb the plant at shutdown (from Table 3.5.a) $11,210,100.00*
- 2. Plus 100 years of dormancy costs
.I (from Table 3.5.a) +7,550,000.00* *
- 3. Plus delayed dismantling cost I (which is calculated as follows from numbers in Tables 3.4.a, 3.5.a and page 17):
Prompt removal / dismantling estimated cost $41,324,200.00 I - Minus prompt removal / dismantling predecommissioning -4,153,300.00 Minus dismantling cost of items removed to accomplish safe storage I entombment -607,600.00 I -
Plus cost to remove concrete constructed to accopplish entgmbment (632 yd x $95/yd = $60,000)
+6t,,000.00
- Minus dismantling cost reductions due to 100 years of dormancy -10,969,600.00 Delayed Dismantling Cost $25,653,700.00 25,653,700.00***
44,413,800.00 Plus 25% contingency 11,1'03,200.00 I TOTAL $55,51'7,000.00 I !
- Entombment cost with 25% contingency = $14,013,000.00 l
'I **
Dormancy cost with 25% contingency = $9,437,500.00 Delayed dismantling cost with 25% contingency = $32,067,100.00 I
I - - " " -
J
NUCLEAR ENERGY SERVICES. INC. DOCUMENT NO. 81A0623 PAGE 20 OF 67 For Unit 2 L i. cost to entomb the piant at shutdown (from Table 3.5.b) $ 1,321,500.00*
{ 2. Plus 100 years of dormancy costs (from Table 3.5.b) 2,740,u00.00* *
- 3. Plus delayed dismantling cost (which is calculated as follows from numbers in Tables 3.4.b, 3.5.b, and page 17):
Prompt removal / dismantling predecommissioning $11,850,700.00 "Minus prompt removal / dismantling predecommissioning ****
Minus dismantling cost of items removed to accomplish safe storage entombment ****
{ -
Plus cost to remove concrete constru ted to acgo lish entombment +60,000.00 (632 yd x $95/yd = 60,000)
Minus dismantling cost reductions due to 100 years of dormancy -2,656,000.00 Delayed Dismantlitig Cost $ 9,254,700.00 9,254,700.00***
13,316,200.00 Plus 25% contingency 3,329,000.00 TOTAL $16,645,200.00 l
h
- Entombment cost with 25% contingency = $1,652,000.00 Dormancy cost with 25% contingency = $3,425,000.00 Delayed dismantling cost with 25% contingency = $11,568,400.00
- * *
- Included in calculation of $11,850,700.00 l
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FORM e Nts 20$ S/19 I
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l B
l NUCLEAR ENERGY SERVICES, INC. DOCUMENT NO. SIA0623 PAGE 71 OF 67 For Both Units l
l
- 1. Cost to entomb at shutdown l Unit 1 $11,210,100.00 Unit 2 1,321,500.00 j 2. Plus 100 years of dormancy costs Unit 1 7,550,000.00 Unit 2 2,740,000.00
- 3. Plus delayed dismantling cost Unit i 25,653,700.00 Unit 2 9,254,700.00 557,730,000.00 f Plus 25% contingency 14,432,000.00 TOTeL $72,162,000.00 1
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FORN4 e NES 205 $/79 l
l NUCLEAR ENERGY SERVICES, iNC. DOCUMENT NO. 81A0623 PAGE 77 OF 67 L
r L
The calcelations just performed can be carried out to give an appre:imate cost of safe storage entombment-delayed dismantling af ter 30 years of dormancy as shown below:
{
r For Unit i
- 1. Cost to entomb the plant at shutdown (from Table 3.5.a) $11,210,100.00
- 2. Plus 30 years of dormancy costs (from Table 3.5.a) 2,265,000.00 r
L 3. Plus delayed dismantling cost (which is calculated as follows f rom numbers in Tables 3.4.a and 3.5.b):
Prompt removal / dismantling predecommissioning $41,324,200.00
( -
Minus prompt removal /dismant!ing predecommissioning -4,153,300.00 Minus dismantling cost of items removed to accomplish safe storage entombment -607,600.00 Plus cost to remove concrete construction to accomplish entombpent +60,000.00 (632 yd x $95/yd = $60,000)
- Minus dismantling cost reductions due to 30 years of dormancy * = 0.00*
Delayed Dismantling Cost $36,623,300.00 36,623,300.00**
30,098,400.00 Plus 25% contingency 12,524,600.00 TOTAL $62,623,000.00 1
- The precise calculation of the 30 year cost reduction was not performed for this l
( **
report.
Approximately delayed dismantling cost with 25% contingency = $45,779,100.
L FORM e NES 205 $/F9 I
(
NUCLEAR ENERGY SERVICES, INC. DOCUMENT NO. 81A0623 PAGE 73 OF /> 7 For Unit 2
- 1. Cost to entomb the plant at shutdown (from Table 3.5.b) $ 1,321,500.00
- 2. Plus 30 years of dormancy costs (from Table 3.5.b) 822,000.00
- 3. Plus delayed dismantling cost
, (which is calculated as follows using numbers from Table 3.4.b):
Prompt removal / dismantling estimated cost $11,850,700.00 Minus prompt removal / dismantling predecommissioning
- Minus dismantling cost of items
{ removed to accomplish safe storage entombment
- Plus cost to remove concrete construgted to acgomplish entombment +60,000.00 (632 yd x $95/yd = $60,000)
{ -
Minus dismantling cost reduction due to 30 years of dormancy * * = 0.00* *
$11,910,700.00 11,910,700.00***
TI4,054,200.00 Plus 25% contingency 3,513,600.00 TOTAL $17,567,800.00 Included in calculation of $11,850,700.00 The precise calculation of the 30 year cost reduction was not performed for this report.
Approximate delayed dismantling cost with 25% contingency = $14,888,400.
DOCUMENT NO. 81A0623 NUCLEAR ENERGY SERVICES, INC.
E PAGE 24 OF 67 I
For Both Units I 1. Cost to entomb at shutdown
$11,210,100.00 I Unit 1 Unit 2 1,321,500.00
- 2. Plus 30 years of dormancy costs Unit 1 2,265,000.00 Unit 2 822,000.00
- 3. Plus delayed dismantling cost i
Unit 1 36,623,300.00 Unit 2 11,910,700.00 I 564,152,600.00 Plus 25% contingency 16,038,150.00 TOTAL $80,190,750.00 i
)
These 30 year delayed dismantling calculations assume that there will be no dismantling cost reduction due to 30 years of dormancy. Actually, the dismantling cost reduction af ter 30 i years of dormancy will be greater than zero by some number which is relatively small compared to the total cost of this decommissioning combination (see page 16 for more details).
1 I
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NUCLEAR ENERGY SERVICES, INC. DOCUMENT NO. 81A0623 i .
PAGE 25 OF 67 l
l TABLE 3.1 l
SUMMARY
OF PRAIRIE ISLAND DECOMMISSIONING COST ESTIMATES
- l l Description Estimated Cost 25% Contingency Total Cost Prompt Removal / Dismantling Unit 1 (from Table 3.4a) $41,324,200.00 $ 10,33"),800.00 $51,655,000.00 l Unit 2 (from Table 3.4b) 11,850,700.00 2,962.300.00 14,813,000.00 TOTAL 53,174,900.00 13,293 100.00 66,468,000.00 1
Entombment I Unit 1 (from Table 3.3a)
Unit 2 (fromTable 3.5b) 11,210,100.00 1,321,500.00 2,802,900.00 330,500.00 14,013,000.00 1,652,000.00 TOTAL 12,531,600.00 3,133,400.00 15,665,000.00 Dormancy af ter Entombment /yr i Unit 1 (from Table 3.5a)
Unit 2 (from Table 3.5b)
TOTAL 75,500.00 27,400.00 102,900.00 18,900.00 6,800.00 25,700.00 94,400.00 34,200.00 128,600.00 Entombment / Dismantling After 100 Years Delay i Unit I (per calc. on p.19)
Unit 2 (per calc. on p.20)
TOTAL 44,413,800.00 13,316,000.00
$57,729,800.00 11,103,200.00 3,329,000.00
$14,432,200.00 55,517,000.00 16,645,000.00
$72,162,000.00 l
l l
- Costs are in 1979 dollars; assumptions and bases of estimate are listed on Table 3.2 1
1 1
- . - s - .,,,
g 1
E E O O E E W W M E M E E O O O E O N b
g NOTES 77 mC
$ 1) Costs shown are in 1979 dollars and include 25% contingency. mp O 2) The " Delayed Removal / Dismantling" curve differs from the prompt removal / Eg dismantling cost total of table 3.1 because of adjustments made to eliminate I :n duplicated pre-decommissioning and equipment removal costs and to account "m for removal of the entombment barriers when dismantling follows safe storage entombment (see calculations on pages 18 & 19 for details).
h$g m
m 3
Safe storage entombment & delayed removal / dismantling $
70 - - m A 59.8 60 - 55.6 .
u 0
,g51.7 Prompt removal / dismantling g 50 -
E Cost reduction due to 100
.. 1 45.8 Delayed removal-dismantling j year delay in dismantling d 40 - 45.8[
$ Y l 32.1 y@
cn
" 30 - *$
P$ z 20 - 23.5 m?
" co W
% lp 10 - 14.0 Safe storage entombment and maintenance @
M w
I I I I i i i 20 40 60 80 100 120 140 TIME (YEARS)
SAFE STORAGE ENTOMBMENT- g DELAYED REMOVAL / DISMANTLING COMBINATION FOR FIRST PRAIRIE ISLAND UNIT :"
5
= FOTES zz g -
mC 03 0 3 1) Costs shown are in 1979 dollars and include 25% contingency.
~
OE q>
- 2) The " Delayed Removal / Dismantling" and prompt removal / dismantling points E ,
overlap each other at time zero. (See calculations on pages 18 & 20 for details) . 5$
zg o<
w m
a 70 - '
=
un ~~
Z a
~
60 - 9 e
)
o 50 -
h E w
?.
a 40 - '
d 5
e 30 -
o o
Safestorageentombment&delayedremoval/dism5ntlip20 m
20 - g *
[ 16.6 y C reduction due to 100 10 -
' 14 9 / 14.9 M k ost; year delay in dismantlir. r y
Delayed remova1-dismantling o I
4 1.7 11.6
/ 5.1 } *$
m, Safe storage entombment and maintenance i I I I I "m
l l g
20 40 60 80 100 120 140 g
, (PromptRemoval/ Dismantling (See Note #2) TIME (YEARS) i i
SAFE STORAGE ENTOMBMENT- M i
DELAYED REMOVAL / DISMANTLING COMBINATION FOR SECOND PRAIRIE ISLAND UNIT .
I DOCUMENT NO. 81A0623 NUCLEAR ENERGY SERVICES, INC.
PAGE 28 OF 67 i
l TABLE 3.2 g ASSUMPTIONS USED IN DECOMMISSIONING COST ESTIMATE FOR PRAIRIE ISLAND NUCLEAR GENERATING PLANT
- 1. Plant piping and component quantities are approximately the same as the refereace PWR plant in the AIF Study. Adjustments for volumes of concrete and steel were made per data and drawings of the Prairie Island Plant. Cost reductions due to decommissioning both units concurrently were taken into account.
- 2. Contract labor costs were estimated from rates provided by Northern States Power Company for Red Wing, Minnesota area.
l 3. Consultant rates were estimated at $45/hr (vs $30/hr in the AIF study).
- 4. Salaried employee and craf t labor rates used in the study were. increased by 27% over those used in the AIF Study (to account for escalation from 1973 to 1979 and regional variation).
- 5. Raw material and capital equipment costs were increased by 69% and 38% respective-ly, over those used in the AIF Study (for escalation and regional variation).
- 6. All costs shown are in 1979 dollars.
- 7. Shipping costs were based on a 1,564 mile trip to the Hanford, WA burial grounds (one way). The Hanford facility was used as the basis for burial costs.
- 8. No decontamination would be required during dismantling af ter a 100 year dormancy period.
5 9. Disposal of the reactor vessel and internals af ter a 100 year dormancy period would still require controlled burial as either low specific activity (LSA) or large quantity I radioactive material. Estimated cost for burial of the vessel and interrals af ter 100 years decay is approximately 10% of the cost to bury these components if dismantled at shutdown.
I 10. Contaminated piping and components would decay to unrestricted access levels during a 100 year dormancy period.
I 11. Property insurance during decommissioning includes liability for equipment and plant scrap value during decommissioning. Following decommissioning, no property insur-ance is carried. Builders risk insurance is included in subcontract labor costs.
I 12. Scrap value credit (based on value of metal being melted down and reused) is included in the cost estimate calculations. Scrap value of non-contaminated metal is considered to cancel the cost for its removal from on-site laydown areas, by decommissioning contractors.
I No equipment salvage value (based on resale as used equipment) is considered in the estimates since salvage values can not be predicted with reasonable accuracy. This assumption is conservative.
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DMMM NO. MWM I NUCLEAR ENERGY SERVICES, INC.
PAGE 29 op 67 ,
1 I l TABLE 3.2 (Cont'd)
- 13. The costs shown in Table 3.4 are based on segmenting the reactor vessel and internals into the maximum size that can be shipped without exceeding roadweight limits for a loaded tractor trailer (includes payload, shielding, cask and tie-downs) and the 60,000 I curie per shipment burial limit at the Hanford burial site.
I 14. 'Due to the high degree of integration between Prairie Island Unit I and Unit 2, single unit decommissioning (while the other unit is operating) is not considered feasible.
Physical division of many site structures is difficult. These assessments are the basis for the following assumptions:
A. Decommissioning of both plant units would occur approximately simultaneoulsy.
I B. Removal costs for the turbine, radwaste, resin disposal, and auxiliary buildings, screenhouse, fuel handling area, discharge structures, and the site canals are accounted for in the estimate for the first unit decommissioned. This makes the second unit decommissioning costs appear ietatively low.
C. Only one decommissioning staff is considered to be on site (rather than two working in parallel).
D. Bac filling costs, grading costs, and scrap value are divided e'venly between units I ar< 2 for accounting purposes, even though this is not physically representative.
I E.
F.
Reactor Vessel cutting equipment is purchased only once and reused on the second unit.
Shared facility and engineering effort costs are accounted in the first unit costs.
- 15. It is assumed that the canals can be filled by grading from high spots on the site landscape, if the canals are to be filled with purchased fill trucked onto the site, the estimated removal / dismantling cost would increase by $1,158,800.00.
- 16. The costs of all required safety analyses and safety measures for the protection of the general public, the environment, and decommissioning workers (as presently identified by NRC Regulatory Guide 1.86) are included in all of the cost estimates.
The costs for compliance with all applicable regulatory requirements are also included in these estimates. The applicable regulatory requirements are:
I 10 CFR 20 " Standards for Protection Against Radiation".
10 CFR 30 " Rules of General Applicability to Licensing of Byproducts Materials".
I 10 CFR 40," Licensing of Source Material".
10 CFR 50," Domestic Licensing of Production and Utilization Facilities".
10 CFR 51," Licensing and Regulatory Policy and Procedures for Environmental Protection".
I 10 CFR 70," Domestic Licensing of Special Nuclear Material".
29 CFR 1910," Occupational Safety and Health Standards".
49 CFR 170-189," Department of Transportation Regulations Governing the Transport I of Hazardous Materials.
FOfw e NES 205 5/79
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NUCLEAR ENERGY SERVICES,INC.
DOCUMENT NO. 81A0623 PAGE 30 OF 67 E
8 TABLE 3.3 COST FACTOR
SUMMARY
r Reactor vessel Removal: Cost Factor Remote Arc Saw. Cutting *thi.n" S18/ inch 2 cut' steel sections (0-2")
I~ Remote Arc Saw Cutting " thick" S10/ inch 2 cut steel sections (2"+)
Remote Removal of Items With SS72/ bolt Tack Welded Bolts Manual Flame Cutting 0-2" Steel S.33/ inch cut Sections Demolition 'of Site Structures:
Heavily Reinforced Activated / S345/yd3 Contaminated Concrete I Heavy Foundations $525/yd3 l Containment Structure & Other Heavily $95/yd3
- Reinforced Seismically Designed Concrete ,
Structures
' Scarfing of. Concrete Floors and Walls $5/ft2 Heavily Reinforced Non-Seismically $32/yd3 Designed Concrete Concrete Buildings (non-seismic; common $12.50/yd 3 (of b1dg. vol. )
I coctmercial construction; lightly reinforced) .
Concrete Block Sl.04/ft2 (floor area) 1 FoMM # NES 2061/F9 ',
7,uim DOCUMENT NO. 81A0623 I NUCLEAR ENERGY SERVICES,INC. ,
PAGE 'l OF 67 l .
- TABLE 3. 3 (CoNr'D)
. COST FACTOR
SUMMARY
Demolition of Site Structures (cont'd) Cost Factor Concrete Walls (not reinforced) 59.80/ft 3
Structural Steel ~
$93/ ton Steel Buildings (non-seismic, consnon S10.69/yd3 (of bldg. vol. )
commer'cial construction)
Built Up Roofing
$46/1000 ft2 Component Removal:
Set Up for Removal of PWR Steam
$7083/ set up Generator PWR Steam Generator S53,600/ steam generator Pipe 0-6" .(Saw'ing)
S65/ cut Pipe 6" + (Torch Cutting) S123/ cut Valves 6" + (Torch Cutting) $60/ valve Pumps 0-300 pounds
$101/ pump Pumps 300-5000 pounds
$217/ pump Pumps 5000 + pounds S1799/ pump Heat Exchangers 0-3000 pounds $313/ exchanger Heat Exchangers 3000 + pounds $939/ exchanger Filters
$200/ filter Ion Exchangers
- S200/ ion exchanger Tanks 0-1000 gallons $200/ tank Tanks 1000-10,000, gallons $310/ tank Tanks 10,000 + gallons S.83/ inch cut FtRM e NES 206 5/F9 -
I
, NUCLEAR ENERGY SERVICES, INC. DOCUMENT NO. 81A0623 l
32 OF , 67 PAGE TABLE 3.3 (CONr'D)
' COST FACTOR
SUMMARY
l Ccanponent Removal (cont'd): Cost Factor Electrical Consoles , Panels a'nd
$89/ item Components 0-300 pounds Electrical Consoles, Panels and S190/ item Components 300-1000 Electrical Consoles, Panels and $282/ item L C mp nents'l O + Pounds Cable Trays $31/ cut F
Conduit $59/100 ft.
Feedwater E' eaters $1160/ heater Misc. Process Equipment 0-300 $101/ item Pounds Misc. Process EquiI: 'I lent $217/ item 300-5000 pounds Misc. Process Equipment 5000 + pounds .51799/ item Shipping of Waste Materials (to Hanford, WA) :
One Way Trip by Truck (0-45,000 lb. payload; S2065/ trio two drivers, LSA material)
Round Trip by Truck (0-45,000 lli. payload; $3847/ trip
- 'No drivers; LSA material)
Round Trip by Truck . (50,000 lb. - 70,000 lb.
$7534/ trip payload; cask shipment, tseo drivers; includes overweight permits)
-Cask Rental (7 days)
$875/ Shipment ~
Rail Shipping (One Way) S8<50/(100 lb.)
S' teel Liner (and contiainer) Fabric'ation $218/(100 lb.)
(includes labor and materials)
Lead and Steel Liner Fabrication $141/(100 lb.)
(includes labor and materials)
L FOCM e NEs 206 5/F9 I
L .
E NUCLEAR ENERGY SERVICES, INC. WWEW E. 8 m 623
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PAGE 33 np 67 r
TABLE 3. 3(CONT'D)
COST FAC7OR
SUMMARY
l Shipping of Waste Materials (Cont'd) Cost Factor W
Wooden Box'es:
4' x 4' x 8' $169/ea.
i 6 x 8' x 12' $393/ea.
l 8' x 8' x 12' $520/ea.
l 6' x 8' x 24' $822/ea.
8' x 8' x 24' $906/ea.
12' x 12' x 24' $1531/ea.
Burial (At Hanford, WA.)
General Bulk Buria'l Rate $4.75/ft3 Weight Surcharge (10,000 lb. and greater) $50 + S.01 (weight lb. over-10,000 lb.)
I Curie Surcharge (for10bormore.Ci) $375 +S;05 (ci over Ci 300 Ci)
Cask Handling (min.) $250/ cask Decontaminaticin 4 Waste Processing:
Tanks and Large Internal Volume $4.30/ft 2 Components Hook-Up Decontamination Rig $172/ hook-up 2
Surface -Wipedown $1.29/ft Deconumination Fluching Rig $55,100/ea.
Evaporation &'Solidfication of Liquid S.22/ gal.
Wastes (using #2 ftiel oil & cement) i 1
B 1
I l
m I DOCUMENT NO. 81A0623 NUCLEAR ENERGY SERVICES, INC.
PAGE 34 OF 67 l
j- TABLE 3.3 (CONT'D) l COST FACTOR
SUMMARY
l Miscellaneous Activities:
L vacuum Drying $1112/ vacuum pump used Back Pilling S.86/yd 3 L
Grading -
$1.42/yd3
{ Landscaping $734/ acre E
1 FORM eNES 205 5/79
I B u0623 NUCLEAR ENERGY SERVICES, INC, DOCUMENT NO.
25 67 PAGE nF , ,
TABLE 3. 4 a COST
SUMMARY
FOR PROMPT REMOVAL /
DISMANTLING OF PRAIRIE ISLAND (first unit)
DECON-TAMINATION REMOVAL SHIPPING BURIAL 'IOTAL l'A70R AcnvnT INOTE!
Pre-decommissioning period
- 1. Remove fuel and a incore source ma-terial
- 2. Clean plant areas a and process all liquid and solid wastes.
55,100 3. Review plant draw-ings.
22,800 4. Perform detailed radiation survey.
8,400 5. Estimate residual by product inven-tory 22,500 6. Prepare and submit possession-only license application with revised tech-nical specitications 5,400 7. Prepare end product discription 31,800
- 8. Perform detailed calcua' cions of by-prodxc inven-tory 7,200
- 9. Define. major se-quence of work l
activities 16,200 10. Perf safety J
analysis of the dismantling operations D
_ _ _ - - . - - - - - - - - - - - - - - - - - - - ' - - - " - - - - - - ~ - -
t R '
NUCLEAR ENERGY SERVICES, INC. DOCUMENT NO~ 81^0623 36 np .67 I
l TABLE 3. 4 a PAGE _
COST
SUMMARY
FOR PROMPT REMOVAL / !
I l
DISMANTLING OF PRAIRIE ISLAND (first unit) '
l DECON- ,
TAMINATICN REMOVAL SHIPPING BURIAL 'IOTAL MAJOR ACTIVITY ;T;OTES 11,3*00 11. Prepare and submit dismantle- '
ment plan to NRC for approval.
1,800 12. Receive' possession l only license-I deactivate reactor I
{
& implement revised technical specifica-tions.
- 13. Receive dismantle-ment order; commence i
dismantling removal program.
I 182,500 SUBTOTAL PRE-DECOMMIS-SIONING WORK ACTIVITIES UNDISTRIBUTED COSTS, REMOVAL / DISMANTLING 17,300 Project Management 17,300 Engineering QA 3,814,700 Utility Staff during b Pre-Decommissioning period l 121,500 Decommissioning staff c
, start up
.3,970,800 SUBTOTAL UNDISTRIBUTED I
}
4,153,300 COSTS TOTAL PRE-DECOMMISSION-ING PERIOD COST I
l 1,110,200 Decommissionino Pdriod
- 14. Prepare activity specifications for
. dismantling 21,600 15. Prepare integrated u
dismantlement se-quence I
1
DOCUMENT NOo 81A0623 NUCLEAR ENERGY SERVICES, INC.
PAGE 37 op 67 r -
TABII 3. 4 a y
' COST
SUMMARY
FOR PROMPT REMOVAL /
DISMANTLING OF PRAIRIE ISLAND (first unit)
DECON-TAMINATION REMOVAL SHIPPING BURIAL TOTAL MAJOR ACTIVITY . NOTE S10,700 16. Perform plant preparation and construct temporary facilities 9,000 17. Design temporary liquid waste clean up systems
[ 1,047,000 18. Design & procure L
cutting equipment
,for vessel and internals removal 115,500 19. Procure contamin-ation control enve-lope and special equipment.
9,.000 20. Obtain contracts for cask liners and chipping containers 800,200 21. Prepare detailed work procedures for dismantling activitie s 35,200 22. Install. temporary liquid waste clean-up system 91,700 1,043,700 79,900 303,700 1,519,000 23. Remove and dispose e of non-essential systems.
2,000 2,000 24. Decontaminate Reac-tor Vessel Head 4,500 10,200 4,200 18,900 25. Remove & dispose of CRD Housings, Instrumentation Tubes & CRD Cooling.
Assemblies' .
200 83,100 9,400 92,700 26. Cut, load, ship, and bury the reactor vessel head.
[ ,
s enene e use em e,1e
NUCLEAR ENERGY SERVICES, INC. DOCUMENT NO. 81A0623 rJSE 38 OF 67 TABLE 3.4 a COST
SUMMARY
FOR PROMPT REMOVAL / .
DISMANTLING CF PRAIRIE ISLAND (first unit)
DECON-TAMINATION REMOVAL SHIPPING BURIAL TOTAL PA70R ACTIVITY NOTES 344,000 712,003 847,900 1,903,900 27. Cut, ship and bury vessel internals 447,900 201,900 148,100 797,900 28. Cut, ship and bury reactor vessel.
237,600 1,053,400 269,400 454,700 2,015,100 29. Drain, decontaminate f remove, and dispose of essential systems.
73,200 73,200 30. Remove steam generatc r missile shield 81,100 79,300 42,300 202,700 31. Remove Vessel Shield 644,600 249,800 133,200 1,027,600 32. Remove reactor build-ing floors & walls 169,000 169,000 33. Decontaminate steam ,
generator tubes i
1,000 34. seal weld all l openings of steam generators and i
pressurizer.
p 6,100 L 35. Perform radiation survey.
130,600 130,600 36. Open top of reactor building 122,000 121,100 300,300 543,400 37. segment and remove steam generator &
pressurizer.
8,100 4,000
- 12,100
- 38. Remove Polar Crane
- 39. Remove remaining plant buildings 688,500 688,500 Reactor Building 1,683,000 1,683,000 Turbine Building 208,200 76,300 40,700 325,200 Radwaste and Resin Disposal Buildings
[
FDr.M *NES 206 9/78
E NUCLEAR ENERGY SERVICES, INC, DOCUMENT NO. 81A0623
~
PAGE 39 67
- OF- ,
l TABLE 3.4a L
COST
SUMMARY
FOR PROMPT REMOVAL /.
- DISMANTLING OF PRAIRIE ISLAND (first unit)
F DECON-TAMINATION REMOVAL SHIPPING BURIAL TOTAL MAJOR ACTIVITY : NOTE!
2,551,800 983,300 524,500 4,059,600 Auxiliary Buildings 1,182,200 448,000 239,000 1,869,200 Fuel'Ilandling Area 151,900
- 151,900 Screenhouse
( 396,600 396,600 Cooling Towers 28,600 28,600 Discharge Structures g F
L 357,200 357,200 Intake, Recycle and
- Cooling Tower Dis-charge Canals 777,100 777,100 Miscellaneous Struc- h tures i
47,100
- 40. Back fill foundations 227,000 41. Grade and landscape 6,100 42. Perform final radiation survey 27,000 43. Prepare final report to NRC.
1,800 44. Terminate possession-only license and re-turn site to un- '
restricted use.
508,400 11,974,300 3,314,300 3,048,000 22,619,50,0 SUB-TOTAL REMOVAL / DIS-MANTLING WORK ACTIVITIES FORM # NES 206 9/s8 I
( .
I .
NUCLEAR ENERGY SERVICES, INC. DOCUMENT NO. 81A0623 PAGE 40 OF 67 TABLE 3.4 a COST
SUMMARY
FOR PROMPT REMOVAL /
DISMANTLING OF PRAIRIE ISLAND (first unit)
DECON-BURIAL TAMINATION REMOVAL S!!IPPING TOTAL MAJOR ACTIVITY NOTE!
REMOVAL / DISMANTLING l UNDISTRIBUTED COSTS:
424,600 19,100 455,600 Process liquid waste generated by decontamina- i tion 8',810,200 Decommissioning Staff d l (through Activity 31 ) ,
619,200 Decommissioning Staff d_
(after Activity 31) 268,700 Health Physics Supplies 72,200 Decontamination Rig and ,
supplies 1,095,800 Heavy Equipment 6,000 Equipment for.pi'e p cutting 457,200 Security Force 73,700 Nuclear & Prcperty Insurance 864,000 Engineering Consultants 1,828,800 Project Administration l'
(QA)
~
14,551,400 SUBTOTAL UNDISTRIBUTED l COSTS:
508,400 11,974,300 3,738,900 3,067,100 41,324,200 TOTAL ESTIMATED DECOM-I MISSIONIN'3 COSTS: REMOVAL /
DISMANTLING 51,655,00'O TOTAL DECOMMISSIONING I COST (including 25%
I contingency): Femoval/
Dismantling FORM e NES 206 9/78
81A0623 NUCLEAR ENERGY SERVICES, INC. DOCUMENT NO, PAGE 41 OF 67 TABLE 3.4 b I COST
SUMMARY
FOR PROPPT REMOVAL /
DISMANTLING OF PRAIRIE ISLAND (second unit)
I DECON-TAMINATION REMOVAL SHIPPING BURIAL TOTAL 1.
MAJOR ACTIVITY Remove fuel and NOTES a
l I incore source material.
- 2. Clean plant areas a and process all I liquid and solid wastes.
- 3. Review plant drawings.
22,800 4. Perform detailed radiation survey. -
8,400 5. Estimate residual
,3 by-product inven-tory.
- 6. Prepare a.1d submi.
possestion-only license application with revised tech-I nical 'pecifications.
- 7. Prepara end product descri ption.
I 4 31,800 8. Perform detailed I calcu:ations of by-pr.iduct inven-tory.
- 9. Define major sequencc l
of work activities.
I -
- 10. Perferm safety anal sis of the dismintling oper,tions.
1 I
g _ . _ _ .,,.
t
NUCt. EAR ENERGY SERVICES, INC. DOCUMENT NO.
PAGE 42 OF 67 TABLE 3.4 b I
COST SU.vpARY FOR PROMPT REMOVAL /
DISMANTLING OF PFAIRIE ISLAND (second unit)
I DECON-TAMINATION REMOVAL SHIPPING BURIAL 'N)TAL 11.
MAJOR ACTIVITY Submit dismantle-NOTES I
ment plan to NRC for approval.
1,800 12. Receive possession only license-
, deactivate reactor and implement revised technical I --
13.
specifications.
Receive dismantle-ment order; commence I , dismantling removal program.
I 64,800 SUBTOTAL PRE-DECOMMISSION ING WORK ACTIVITIES UNDISTRIBUTED COSTS, REMOVAL / DISMANTLING Project Management Engineering QA Utility Staff during Pre-Decommissioning period Decommissioning staff start up I -
SUBTOTAL UNDISTRIBUTED COSTS I 64,800 TOTAL PRE-DECOMMISSION-ING PERIOD COST Decommissioning Period
- 14. Prepare activity specifications for I -
15.
dismantling Prepare integrated I dismantlement sequence roRM # NES 205 9/78 l
DOCUMENT NO. 81A0623 NUCLEAR ENERGY SERVICES, INC.
PAGE "3 OF 67 TABLE 3.4 b COST
SUMMARY
FOR PROMPT REMOVAL /
DISMANTLING OF PRAIRIE ISLAND (second unit)
TAMINATION REMOVAL SHIPPING BURIAL TOTAL MAJOR ACTIVITY NOTES l
- 16, Perform plant preparation and
' construct temporary facilities
- 17. Design temporary
[ liquid waste clean L
up systems
- 18. Design and procure cutting equipment for vessel and internals removal '
F -
- 19. Procure contami-nation control envelope and
, special equipment.
- 20. Obtain contracts
' for cask liners and shipping containers
- 21. Prepare detailed I work procedures for dismantling activities I 35,200 22. Install temporary liquid waste clean-up system 91,700 1,043,700 79,900 303,700 1,519,000 23. Remove and dispose of non-essential systems 2,000 2,000 24. Decontaminate l Reactor Vessel Head j 4,500 10,200' 4,200 18 400 25. Remove and dispose of CRD Housings, Instrumentation Tubes and CRD l Cooling Assemblies 200 83.100 9,400 92,700 26. Cut, load, ship, i
and bury the L reactor vessel head Fo8tM
- NES 205 9/78 I
\ __ ________
NUCLEAR ENERGY SERVICES,INC. DOCUMENT NO.
PAGE 44 OF 67 TABLE 3.4 b I COST
SUMMARY
FOR PROMPT REMOVAL /
DISMANTLING OF PRAIRIE ISLAND (second unit)
DECON-I. TAMINATION REMOVAL 344,000 SHIPPING 712,000 BURIAL 847,900 TOTAL 1,903,900 27.
MAJOR ACTIVITY Cut, ship and bury NOTES vessel internals 447,900 201,900 148,100 797,900 28. Cut, ship and bury reactor vessel 237,600 1,053,400 269,400 454,700 2,015,100 29. Drain, decontaminate f remove, and dispose of essential sys-tems 73,200 73,200 30. Remove steam gene-I ,
rator missile shield 81,300 79,300 42,300 202,700 31. Remove Vessel Shield 644,600 249,800 133,200 1,027,600 '3 2. Remove reactor I building floors and walls 169,000 169,000 33. Decontaminate Steam generator tubes I 1,000 34. Seal weld all openings of steam generators and pressurizer G,100 35. Perform radiation survey 130,600 130,600 36. Open top of reactor building I 122,000 121,100 300,300 543,400 37. Segment and remove steam generator and pressurizer 8,100 4,000 12,100
- 38. Remove Polar Crane
- 39. Remove remaining plant buildings 688,500 688,500' Reactor Building I -
Turbine Building Radwaste and Resin Disposal Buildings FORM e NES 205 9/78 l
l
i 81A0623 NUCLEAR ENERGY SERVICES, INC. DOCUMENT NO.
{
PAG E 45 OF 67 __
TABLE 3.4 b COST
SUMMARY
FOR PROMPT REMOVAL /
DISMANTLING CF PRAIRIE ISLAND (second unit)
DECON-TAMINATION REMOVAL SHIPPING BURIAL TOTAL MAJOR ACTIVITY NOTES Auxiliary Buildings l
Fuel Pandling Area 1 1
Screenhouse 396,600 396,600 Cooling Towers Discharge Structures g Intake, Recycle and Cooling Tower Dis-charge Canals
[
Miscellaneous Structures 47,100 40. Back fill founda-tions 227,000 41. Grade and landscape 6,100 42. Perform final radiation survey 27,000 43. Prepare final report to NRC
- 44. Terminate posses-sion only license and return site to unrestricted use I 508,400 5,034,500 1,806,700 2,243,800 9,942,700 SUB-TOTAL REMOVAL /
DISMANTLING WORK ACTIVITIES FoKM a NES 205 9/78 t
NUCLEAR ENERGY SERVICES,It4C. DOCUMENT NO.
46 67 PAGE OF TABLE 3.4 b I COST
SUMMARY
FOR PROMPT REMOVAL /
DISMANTLING OF PRAIRIE ISLAND (second unit)
DECON-TAMINATION REMOVAL SHIPPING BURIAL TOTAL MAJOR ACTIVITY NOTES REMOVAL / DISMANTLING UNDISTRIBUTED COSTS:
424,600 19,100 455,600 Process liquid waste generat'ed by decontami- i nation Decommissioning Staff (through Activity 31)
- Decommissioning Staff (after Activity 31) 268,700 Health Physics Supplien 17,100 Decontamination supplies 1,095,800 Heavy Equipment I 6,000 Equipinent for pipe cutting
- Security Force Nuclear & Property Insurance Engineering Consultants Project Administration I
(QA) 1,843,200 SUB-TOTAL UNDISTRIBUTED COSTS:
508,400 5,034,500 2,231,300 2,262,900 11,850,700 TOTAL ESTIMATED DECOMMISs SIONING COSTS: REMOVAL /
I 14,813,000 DISMANTLING TOTAL DECOMMISSIONING COSTS: REMOVAL DIS-MANTLING (including 25%
contingency)
I 1
1 FORM # NES 205 9/78
DOCUMENT NO. 81A0623
. NUCLEAR ENERGY SERVICES,INC.
g PAGE 47 OF 67 TABLE 3.5 a
' COST
SUMMARY
FOR SAFE S'IORAGE ENTOMBFINT OF PRAIRIE ISLAND (first unit)
DECON-TAMINATION REMOVAL SHIPPING BURIAL TOTAL MAJOR ACTIVITY . NOTES Pre-decommissioning Period
- 1. Remove fuel and a incore source mate; rial
- 2. Clean plant areas a and process all liquid and solid wastes 55,100 3. Review plant drawings 22,800- 4. Perform detail radiation survey -
8,400 5. Estimate residual ,
by product inventory t
I 22,,500
- 6. Prepare and submit possession-only license application l
l
)
with revised tech-nical specifiertions
- 7. Prepare end-product 5,400 description
- 8. Perform detailed 31,800 calculations of by product inventory 5,400
- 9. Define major sequence of work activities l l l 10. Perform safety anal-16,200 ysis of the entorrb-ment operations l
118,800
. epare a safety anal' sis of the end-l product including l seismic analysis 9,000 12. Prepare and submit Safe Storage Entombment Plan to NRC for approval.
Fom%8 m NES 206 e/78
DOCUMENT NO, 81A0623 NUCLEAR ENERGY SERVICES, INC, PAGE 48 OF 67 TABLE 3,5a '
COST
SUMMARY
FOR SAFE STORAGE ENTOMBMENT .
OF PRAIRIE ISLAND (First unit) ,
DECON-TAMINATION REMOVAL SHIPPING BURIAL TOTAL MAJOR ACTIVITY 'UOTES 1,800 13. Receive possession only licenses deactivate reactor; implement re-vised technical speci-fications. NRC review of Safe Storage En-tombment Plan and issut of Safe Storage Entorb-ment Order.
297,200 SUBTOTAL PRE-DECOMMIS-SIONING WORK ACTIVITIES, SAFE STORAGE ENTOMBMENT.
UNDISTRIBUTED COSTS, ENTOMBMENT 25,800 Project Management 25,800 Engineering Quality Assurance 3,814,700 Utility staff b 121,500 Decommissioning Staff c Start-Up 3,987,800 SUB-TOTAL UNDISTRIBUTED COSTS 4,285,000 TOTAL PRE-DECOMMISSIONING DERIOD COST, SAFE STORAGE ENTOMBMENT. l 138,900 Decommissionino Period
- 14. Prepare activity specifications for entombment 16,200 15. Prepare integrated safe storage entorb-ment sequence.
119,500 16. Prepare detailed work
. procedures for safe storage entorbment ;
operations.
9,000 17. Procure equipment for vacuum drying of reactor vessel PORM e NES 2C6 W78 L .
s NUCLEAR ENERGY SERVICES, INC.
- PAGE 49 nF 67 TABLE 3.Sa CO3T
SUMMARY
FOR SAFE STORAGE ENTOMBMENT OF PPAIRIE ISLAND (first unit) i I
DECON-TAMINATION REMOVAL SHIPPING . BURIAL TOTAL MAJOR ACTIVITY . NOTE!
5,800 18. Procure cask & con-8 tainer linings obtair:
shipping cask con-tainer peruite.
- 19. Drain, de-energize a and secure non-contaminated systems
-- 20. Drain reactor vessel a 607,600' 21. Drain, decontaminate, de-energize at.d secure or remove con taminated t tems.
6,400 22. Prepare lighting, fire protection, I ventilation and alarm systems for post decommissioning use.
29,200 23. Construct entomb-ment structure 6,400 24. Install reactor containment pressure equalization line.
21,800 25. Decontaminate floors and walls.
6,100
- 26. Perform radiation survey
- 27. Secure buildin, a l access I 9,000
- 28. Prepare and submit final report to NRC 1
l FORM,8 NES 105 S/78
DOCUMENT NO. 81A0623 NUCLEAR ENERGY SERVICES, INC.
PAGE 50 OF 67 TABLE 3.5a COST
SUMMARY
FOR SAFE STORAGE ENTOMBMENT OF PRAIRIE ISLAND (first unit)
DECON-TAMI!!ATION REMOVAL SHIPPING BURIAL TOTAL MAJOR ACTIVITY 'TIOTEE 975,900 SUB-TOTAL DECOMMISSIONING WORK ACTIVITIES SAFE STORAGE ENTOMBMENT UNDISTRIBUTED COSTS, SAFE STORAGE EN'IOMBMENT
~
455,600 Process liquid wastes generated by decontam-ination 4,276,800 Decommissioning staff 55,200 Health physics supplies 72,200 Decontamination rig ans Other. decontamination equipment 42,300 Equipment for pipe cutting & hoists 228,600 ' Security Force 347,300 Engineering consultants 209,600 Project Quality Assurance 209,600 Project Administration Nuclear Insurance & Proper-52,000 ty Insurance SUB-TOTAL UNDISTRIBUTED 5,949,200 COSTS, SAFE STORAGE l
ENTOMBMENT 11,210,100 TOTAL ESTIMATED DECOM-MISSIONING COSTS, SAFE STORAGE ENTOMBMENT 14,013,000 TOTAL DECOMMISSIONING COSTS, SAFE S'IORAGE ENTOMBMENT (Including 25% contingency)
I FCRM # NES 2.A W78 r _ _ _ _ _ _
I . NUCLEAR ENERGY SERVICES. INC.
DOCWEM NO.
PAGE NU 51 OF 67
~
E TABLE 3.5a I COST
SUMMARY
FOR SAFE SIORAGE ENTOMBMFNT OF PRAIRIE ISLAND (first unit)
DECON-l TAMINATION REMOVAL SHIPPING BURIAL 'IOTAL 17,100 MAJOR ACTIVITY POST DECOMMISSIONING DOPFANCY COST (AtNUAL)
- 29. Perform quarterly
- NOTES l
I inspections defined in Regulatory Guide 1.86.
12,700 30. Perform semi-annual i environmental survey 1
18,300 31. Prepare reports de-fined in Regulatory Guide 1.86 48,100 SUB-TOTAL POST-DECOMMIS-SIONING WORK ACTIVITIES
_ DORMANCY UNDISTRIBUTED Cr5TS (per year) , DORMANCY 1,000 Health Physics 1,000 Nuclear Insurance 25,400 Maintenance Allowance SUB-TOTAL UNDISTRIBUTED 27,400 COSTS, DORMANCY 75,500 TOTAL ESTIMATED ANNUAL COST FOR DOPMANCY PERIOD 94,400 TOTAL ANNUAL COST FOR DORMANCY (including 25% contingency)
E 5
l l
5 I
FORM
- NES 205 D/78
NUCLEAR ENERGY SERVICES, INC. DOCUMENT NO.81A0623 52 67 PAGE OF TABLE 3.5 b COST
SUMMARY
FOR SAFE STORAGE ENTOMBMENT OF PRAIRIE ISLAND (second unit)
I s DECON-TAMINATION REMOVAL SHIPPING BURIAL TOTAL MAJOR ACTIVITY Pre-decommissioning NOTES Period
- 1. Remove fuel and incore source material.
- 2. Clean plant areas l and process all liquid and solid wastes.
- 3. Review plant drawings
~
22,800 4. Perform detail radia- ,
tion survey. !
8,400 5. Estimate residual l by-product inventory. ;
- 5. -
- 6. Prepare and submit possession-only I license application with revised techni-cal specifications.
- 7. Prepare end-product
, description.
I 8.
31,800 Perform detailed cal-culations of by-product inventory.
I -
- 9. Define major sequence of work activities.
]
- 10. Perform safety analy-R sis of the entombment operations.
- 11. Prepare a safety I,
analysis of the end-product includinc seismic analysis.
- 12. Prepare and submit Safe Storage Entomb- l ment Plan to NR"
'I for approval. i pomu = NES 205 9/78
NUCLEAR ENERGY SERVICES, INC. DOCUMENT NO.81Ao623 PAGE 53 67 OF f
TABLE 3.5 b CO3T
SUMMARY
FOR SAFE STORAGE ENTOMBMENT OF PRAIRIE ISLAND (second unit)
DECON-TAMINATION ' REMOVAL SHIPPING BURIAL TOTAL MAJOR ACTIVITY NOTES 1,800 13. Receive possession-only license; de-t activate reactor; implement revised technical specifi-cations. NRC review of Safe Storage En-tbebment Plan and issue of Safe Storage Entombmert. Order.
64,800 SUB-TOTAL PRE-DECOMMIS-SIONING WORK ACTIVITIES, SAFE STORAGE ENTOMBMENT.
UNDISTRIBUTED COSTS, ENTOMBMENT Project Management Engineeris.q Quality Assurance Utility Staff Decomminsioning Staff Start-up SUB-TOTAL UNDISTRIliUTED
~
OSTS 64,800 COTAL PRE-DECOMMISSIONING JERIOD COST, SA'FE STORAGE ENTOMBMENT 3ecommissioning Period
- 14. Prepare activity specifications for entortment
- 15. Prepare integrated safe storage en-tombment sequence
- 16. Prepare detailed work procedures for safe storage enterb-ment operations 17 Procure equipment for vacuum drying of reactor vessel i
FoCM
- NES 205 9/78 M
(
81A0623 I NUCLEAR ENERGY SERVICES, INC. DOCUMENT NO.
L 54 67 PAGE OF TABLE 3.5 b COST
SUMMARY
FOR SAFE STORAGE ENTOMBMENT OF PRAIRIE ISLAND (second unit)
DECON-TAMINATION REMOVAL SHIPPING BURIAL TOTAL MAJOR ACTIVITY' NOTES
- 18. Procure case & con-tainer linings
/3 obtain shipping cask containe permits.
- 19. Drain, de-energize L and secure non-contaminated systems.
- 20. Drain reactor vessel.
607,600 21. Drain, decontaminate, de-energize and secure or remove .
contaminated systems.
6,400 22. Prepare lighting, fire protection, ventilation and alarm systems for '
post decommissioning j use.
29,200 23. Construct entomb-ment structure.
6,400 24. Install reactor containment pressure equalization line.
21,800 25. Decontaminate floors and walls.
i 6,100 26. Perform radiation survey.
- 27. Secure building access. !
9,000 28. Prepare and submit final report to ,
NRC. -
I
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i-E 1
FOCM e NES 205 9/78 I
L
I NUCLEAR ENERGY SERVICES, INC. DOCUMENT NO.
81A0623 PAGE 59 OF 67 TABLE 3.5 b I COST
SUMMARY
FOR SAFE STORAGE ENTOMBMINT OF PRAIRIE ISLAND (second unit)
DECON-I. TAMINATION REMOVAL SHIPPING BURIAL TOTAL MAJOR ACTIVITY NOTES 686,500 SUB-TOTAL DECOMMISSIONING WORK ACTIVITIES, SAFE I STORAGE ENTOMBMENT I UNDISTRIBUTED COSTS, SAFE STORAGE ENTOMBMENT 455,600 Process liquid wastes I generated by decontamina-tion.
- Decommissioning staff 55,200 Health physics supplies I Decontamination 17,100 Equipment 42,300 Equipment for pipe cutting & hoists Security Force Engineering consultants Project Quality Assurance Project Administration Nuclear Insurance &
Property Insurance 570,200 SUB-TOTAL UNDISTRIBUTED COSTS, SAFE STORAGE ENTOMBMENT I
1,321,500 TOTAL ESTIMATED DECOMMIS-SIONING COSTS, SAFE I STORAGE ENTOMSPINT 1,652,000 Total Decommissioning Costs, Safe Storage I Entorbment (including 25% contingency)
I .
I _ . . _ .,,.
^
NUCLEAR ENERGY SERVICES, INC. DOCUMENT NO.
PAGE 56 OF 67 TABLE 3.5 b COST
SUMMARY
FOR SAFE STORAGE ENIOMBMENT OF PRAIRIE ISLAND (second unit)
DECON-TAMINATION REMOVAL SHIPPING BURIAL TOTAL MAJOR ACTIVITY NOTES Post Decommissioning Dormancy Cost (Annual)
,I ,
- 29. Perform quarterly inspections defined in Regulatory Guide
] 1.86.
- 30. Perform semi-annual environmental survey.
- 31. Prepare reports de-
!g fined in Regulatog Guide 1.86.
- g ,
SUB-TOTAL POST-DECOMMIS-SIONING WORK ACTIVITIES DORMANCY UNDISTRIBUTED COSTS (per year), DORMANCY 1,000 Health Physics i 1,000 Nuclear Insurance 25,400 Maintenance Allowance l
27,400 SUB-TOTAL UNDISTRIBUTED l COSTS, DORMANCY l
27,400 TOTAL ESTIMATED ANNUAL
,3 COST FOR DORMANCY PERIOD 34,200 Total Annual Cost For t Dormancy Period (including 25% contingency)
I I
il
.g - . - .,,.
NUCLEAR ENERGY SERVICES. INC. DOCUMENT NO. 81A0623 PAGE 57 op 67 TABLE 3.6 DECOMMISSIONING COST ESTIMATE NOTES
- a. This activity would be performed by the utility staff. The ccst is included in the undistributed cost category.
- b. During pre-decommissioning, the utility staff consists of the plant operations staff and utility craf t labor (such as mechanics, health physics technicians, maintenance personnel) to be used during decommissioning.
- c. Decommissioning staff startup consists of the administrative staff contracted to perform the decommissioning. This would include a project superintendent, adminis-trative personnel, health physics technicians, clerks, and craf t labor.
- d. Decommissioning staff (af ter Activity 31) for dismantling represents a reduced dismantling workforce because of the reduced work activity,
- e. Nonessential systems are:
Main Steam and Turbine Bypass Chemical and Volume Control Emergency Core Cooling Containment Vessel Internal Spray Containment Spray Additive Auxiliary Feedwater Cooling Water Sampling System Emergency Diesel Generator Condensate and Feedwater Chemical Injection Steam Generator Blowdown Turbine Generator Main Condenser and Air Removal Circulating Water l
Condensate and Feedwater Phosphate Injection System Fuel Pool Cooling Fuel Handling (including new and spent fuel racks)
DC Power Extraction Steam (Gland Seal, Bleed Steam)
FORM e P4ES 205 5/79 i
NUCLEAR ENERGY SERVICES. INC. DOCUMENT NO. 81A0623 P PAGE 58 oF 67 l
TABLE 3.6 (Cont'd)
- f. Essential Systems are:
Reactor Coolant Residual Heat Removal Condensate Storage Facilities Electric Power Instrumentation and Control
{
Compressed Air Station Service Water Demineralized Water Make-up (Reactor Make-up Control System)
Domestic Water Heating, Ventilation, and Air Conditioning Eire Protection Gaseous Radwaste I Liquid Radwaste Solid Radwaste Containment Air Cooling Component Cooling Auxiliary Steam Hot Water and Glycol Heating
- g. Dic harge Structures include the Discharge Basin, Distribution Basin, Discharge c Structure, and Cooling Tower Pump House.
L FORM eNES 205 5/79
I DOCUMENT NO. 81A0623 NUCLEAR ENERGY SERVICES, INC.
PAGE 59 OF 67 I
I TABLE 3.6 (Cont'd)
I h. Misc. Structures include the following:
Nine Transmission towers Holding Basin (Pipe Cleaning) l Transformer Oil Sumps (2) I Guard Houses (2)
Warehouses (t4 ) I g Construction Building W Neutralizing House Hydrogen House Transformer Separating Walls and Pits Equipment House Crew Quarters Circulating Water Conduits I i. The total includes processing (i.e., oil fueled evaporation of liquid wastes and solidification in cement) which is not considered a decontamination or removal cost, and is therefore, not tallied in any of the other table columns. Therefore, the total activity cost is greater than the sum of the shipping and burial costs shown.
I I
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f NUCLEAR ENERGY SERV'CES, INC. DOCUMENT NO. 81A0623 PAGE 60 OF 67
- 4. SCHEDULE ESTIMATES 1
The schedule for each major activity in the prompt removal / dismantling program is shown on Table 4.la. Table 4.1.b lists the estimated schedule for delayed dismantling af ter 100 L years of dormancy. The duration of entombment activities is shown in Table 4.2.
b It is assumed that both Prairie Island units are decommissioned simultaneously. Therefore, the schedule for second unit decommissioning would be approximately the same as those shown on Tables 4.1.a, 4.1.b, and 4.2. Dismantling of the second unit would be slightly behind the schedule of the first unit to permit sharing of major pieces cf equipment such as g the arc saw and large cranes.
- C 1
l 1
l 1
l 1
l FORM
- NES 205 S/F9
l l l n m - l l 1
i NUCLEAR ENERGY SERVICES, INC. DOCUMENT NO.
PAGE 81A0623 61 op. 67 I TABLE 4.l(a)
SCHEDULE OF PRAIRIE ISLAND (ONE UNIT)
PROMPT REMOVAL / DISMANTLING ACTIVITIES
' Activity .
Activity Schedule, Months *
- 1. Remove fuel and in-core source material 0-6
- 2. Decontaminate plant areas and process 06 -
1 all liquid and solid wastes
- 3. Review plant drawings O' - 1
- 4. Perform detailed radiation survey 1-3
- 5. Estimate residual by-product inventory 1 -
2\
- 6. Prepare and submit possession-only lh - 4 license application with revised technical specifications
- 7. Prepare end-product description 2 - 3
- 8. Perform de'talled calculations of by- 2 -
5 product inventory activities
- I 9. Define major sequence of work 3-5 activities j 10. Perform safety analysis of the 4 -
6 3 dismantling operations
- 11. Prepare and submit Dismantling Plan I to NRC for approval 6-9
- 12. Receive possession-only license; 6 -7 deactivate reactor; implement 1 reviEed technical specifications
- 13. NRC review of Dismantling Plan and I' Issue of Dismantling Order 9 - 12
- 14. Prepare activity specifications
' 2 - 14 for dismantling
- 15. Prepare integrated dismantling 12 - 14 sequence I
- Time since reactor shutdown (months).
1 FORM eNES 206 549
1 N'UCLEAR ENERGY SERVICES, INC. -DOCUMENT NO. 81Ao6_23 I
l PAGE 62 O F___ 67 I TABLE 4.1 a - CONT.
Activity Aettvity Schedule, Monthh*
- 16. Perform plant preparation and con- 0 - 12 struct temporary facilities L 17- o**19 " "at*r * **"-"P "Y****
11 - 12 l
- 18. Design and procure remote cutting 6 - 13
{ equipment for vessel and internals removal
- 19. Procure contamination control 10 - 13 l
{ envelope and special equipment
- 20. Obtain contracts for casks, liners, l and shipping containers 11h - 13 1
I 21. Prepare detailed work procedures for dismantling activities 7 - 15
- 22. Install wa'ter clean-up system 12 - 13
- 23. Drain, decontaminate, remove and 8 - 19 dispose of non-essential systems.
- 24. Decontaminate vessel head 11 - 12 l
I l
12 - 14 I 26. Cut, load, ship and bury the reactor vessel head 14 - 15
- 27. Cut, ship and bury vessel internals 15 - 33
- 28. Cut, ship and bury reactor vessel 33 - 44
- 29. Drain, decontaminate, remove and dispose of essential systems 36.5 - 57h
- 30. Remove steam generator shield wall 44 - 47
- 31. Remove reactor vessel shield 57
- 65 wall and ship for burial.
- 32. Remove containment building internal 44 - 54 walls and floors.
- Time since reactor shutdown (months).
FORM e NES 205 5/F9
L f NUCLEAR ENERZY SERVICES, INC.
- PAGE 63 op 67
{ TABLE 4.la - CONT.
Activity Activity schedule, Months *
~
- 33. Decontaminate steam generator -
52 -
57 tubes.
- 34. Seal weld all openings of steam 57h - 59 generators and pressurizer
- 35. Perform radiation survey 62 -
63 L
- 36. Open top of reactor building 63 - 64
{ 37. Segment and remove steam generators and pressurizer 59 - 65 p 38. Remove polar crane L
65 - 65\
- 39. Remove remaining structures 47- 70
- 40. Backfill foundations 70 - 72
- 41. Grade and landscape 71- 73
- 42. Perform final radiation 70 - 70 survey
- 43. Prepare and submit final 68- 73 report to NRC
- 44. Terminate possession-only license and return site '
to unrestricted use.
. TABLE 4.1.b SCHEDULE of PRAIRIE ISLAND (ONE UNIT)
DELAYED REMOVAL / DISMANTLING ACTIVITIES Activities Activity Schedt$le, Months **
- 1. thru 13. (activities are same
- as those identified for prompt dismantling) 0
- 14. thru project completion (activities are same as those identified for prompt dismantling) 0-24 Time since reactor shutdown (months).
?
- Time since completion of 100 years of dormancy (months).
l I
FOmv e 6t3 206 5/79 1l
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I DOCUMENT NO. 81A0623 I NUCLEAR ENERGY SERVICES,INC. PAGE OF
- TABLE 4.2 SCHEDULE OF PRAIRIE ISIAND (ONE UNIT)
SAFE STORAGE EtTIUMBMENT ACTIVITIES Activities Activity Schedule , Months *
- 1. Remove fuel and in-core source material 0 - 6h
- 2. Clean plant areas and process all 0-6 liquid and solid wastes
- 3. Review plant drawings 0-1
- 4. Perform detail radiation survey 1-3
- 5. Estimate residual by-product inventory lh - 2h
- 6. Prepare and submit possession-only' 1 -4 license application with revised
.I technical specifications
- 7. Prepare en'd-product description 2h - 4 8.
~
Perform detailed calculations of 2 -5 by-product inventory
- 9. Define major sequence of work activities 3 -5 I 10. Perform safety analysis of the entombment operations 44 - 6
- 11. Prepare a safety analysis of end product 3 -6
- 12. Prepare and submit Entombment Plan to NRC 6-9 for approval
- 13. Receive possession-only license; 6 - 12 deactivate reactor; implement revised technical specifications.
- 14. Prepare activity specifications 1 - 14 for entombment
- 15. Prepare integrated entombment 11 - 14 sequence I 16. Prepare detailed work procedures for entombment operations 8 - 12 I
- Time since reactor shutdown (months).
FORRA O NES 306 S179
. DOCUMENT NO. 81A0623 N'UCLEAR ENERGY SERVICES, INC.
PAGE 65 op 67 I
1 I TABLE 4.2 , CONT.
Activity Acti ty schedule , Months
- 1 17. Procure equipment for vacuum 6 - 12 I
! drying of reactor vessel
- l l \
- 18. Procure cask and container 11 - 13 ,
lI linings, obtain shipping cask / container I permits 19.
I Drain, de-energize and secure non-contaminated systems 9 - 13
- 20. Dry reactor vessel 13 - 14
- 21. Drain, decontaminate, de-energize and 12 - 29 secure or remove the contarainated systems
- 22. Prepare lighting, fire-protection and 29- 30
. alarm systems for post decommissioning
~
- 23. Construct entombment structure 16 - 17
- 24. Install reactor containment 29 - 30 I pressure equalization line
- 25. Decontaminate floors and walls 27- 29
- 26. Perform radiation survey 30- 31
- 27. Secure building access 30- 31
- 28. Prepare and submit final report 31- 34
, to NRC DORMANCY l 1. Provide maintenance and-surveillance Unspecified of.the site g . m 1 _ _ _ .s <, _ < _ rm.>.
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DOCUMENT NO. 81A0623 NUCl. EAR ENERGY SERVICES. INC.
'I PAGE 66 0F 67
- 5. REFERENCES W.3. Manion and T.S. LaGuardia, "An Engineering Evaluation of Nuclear Power l.
)
Reactor Decommissioning Alternatives," AIF/NESP-009, November 1976.
- 2. "Procucer Prices and Price Indexes," April 1979, U.S. Department of Labor, Bureau of Labor Statistics.
l 3. " Employment and Earnings," April 1979, U.S. Department of Labor, Bureau of Labor
! Statistics.
- 4. " Building Construction Cost Data 1979," Robert Snow Means Company, Inc., Duxbury, Massachusetts.
!I 3. " Building Construction Cost Data 1975," Robert Snow Means Company, Inc., Duxbury, j Massachusetts.
la
. 6. "1978 Dodge Guide," McGraw-Hill Information Systems Company, New York, New York.
J
- 7. " Iron Age Magazine," August 20,1979 issue.
8.
I NECO burial cost information for the Hanford burial site.
- 9. Tri-State Motor Transit Co., Joplin, Missouri.
- I 10. NES D.O.E. Decommissioning Handbook (currently in preparation),
- 11. U.S. Nuclear Regulatory Commission Regulatory Guide 1.86, " Termination of Operat-ing Licenses for Nuclear Reactors".
.I
- 12. Department of Transportation, Section 49 of Code of Federal Regulations, entitled
- " Transportation," Parts 173 and 189.
- 13. Smith, R.I., NUREG/CP-0008, " Boiling Water Reactors".
.I
NUCLEAR ENERGY SERVICES, INC. t~CUMENT NO. A1A0623
"^oe OF 67 REVISION LOG "E .
DATE DESCRIPTION go P($E
, APPROV AL 1 2/10/80 All CRA No. 1199 - Major revision; renumbered
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MEMORANDUM TO: Distribution thATE: June 16,1980 FROM: B. Murray COPIES TO: J. Long M. Seville See Distribution SUBJ: Minutes of Team Leaders' Meeting 040 B/W R
The following summarizes decisions made at our meeting today:
FILE LEVELS Dock'.. 50-129 became category W on 790927 Docket 50-147 became category W on 740716 Topical reports about specific plants do not get TOPRP file levels.
DUPLICATES Everyone who checks dupes must be reminded co check existing data records for new information added to a document the second time around, especially docket dates, task numbers and file levels.
The new information must be added to the old data records.
DATA DICTIONARY CHANGES TPCONT (contracts) should be changed to reflect the external affiliation (contractor) as the primary affiliation, and the NRC officer as the secondary affiliation, in order to permit a DCN search using the contractor's code.
Add new DTC for Congressional Record Highlights (TZHIGH) from the Ofc of Congressional Affairs (authcr). Title should read "Congr. Record highlights for date." Availability info expected shortly. Sample attached.
Change description for TITRAN: depositions and narrative testimonies get author names.
STYLE / TITLES Please use the following: man rems pH manhours /h (per hour) 4
a 7
QC REMINDERS 1
Be sure Docket 50 category is written on document, and any time the category is changed on the list, be SURE to change it on the PDR copy of the document (in DDC).
- Always check the accession number on the document. If it is wrong, please check the PDR copy of the document also.
Front-end QC person should always initial corrected coding form.
DTC for the monthly journal (NUREG-054 0) is TZINDX.
i FORMAL REPORT NUMBERS Please read attached memo carefully.
- DISTRIBUTION S. Alfaro L. Reeder
- 0. Nevins
- P. Maida D. Warner B. Zwilsky E. Dull (Dictionary) i
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j sg.f}ldkf9 CONGRESSIONAL RECORD - Wednesday, June 4,1980 House:
2 President transmitted a prcposed Agreement between the U.S. and Morocco en the Peaceful Uses of Nuclear Energy. Referred to Foreign
- Affairs.
Page H 4470 Mr. Udall (D-AZ) submitted the conference report on S. 562 NRC FY '80 Authorizations; H. Rpt. 96-1070.
Page H 4472-4482 Senate:
President transmitted a proposed Agreement between the U.S. and Morocco on the Peaceful Uses of Nuclear Energy. Referred to Foreign Relations.
Page S 6262-6263 Senate Budget reported S. Res. 440, budget waiver for S. 2443, West Valley Waste Demonstration Project.
Page S 6264 Extension of Remarks: .
Mr. Myers (R-IN) talks about NRC reorganization and inserts testimony of Commissioner Kennedy.
Page E 2720 Mr. McCormack (D-WA) inserts article entitled "Why Britain is Going Nucl ear" .
Page E 2721 House Interior Subcommittee on Energy and the Environment began markup of H.R. 6390, Atomic Energy Act Amendments.
Page D 820 9
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P TO: Encoders /QC DATE: 6/16/80 y, - -
FROM: B. MurrayI # ~ ~ COPIES: M. Seville T. Sawalli J. Long 155 B/W RE: Formal Report Document Control Numbers (DCNs) 040 B/W
- R In an attempt to diminish our problem with duplicate formal reports (especially NUREGs) getting into the system, we will standardize all DCN entries according to the attached table of priorities and options.
The procedure is simple: enter the NUREG (or other number) in the DIN, and read down the list of priorities to find the placement of modifiers like volumes, revisions, drafts, etc.
If the modifier is supposed to be placed in a field which already has an entry, move to the next option for the next possible placement.
For example, NUREG-0123, Volume 2, Number 3, Revision 1:
enter the NUREG number in th' DIN. Check the table and find the volume number must be placed in the DPN, and the number must be placed in the DRN. The revision number is last on the priority list, and is supposed to be entered in the DRN field, which is already filled. Move to Option 2 to find the next correct placement for the revision number, which is is the DIN using the format Rl.
We are willing to bet this table is not foolproof, so any problem reports which do not conform to the table should be given to Tom Sawallis for a decision.
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