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Restructuring System Cost Accounts and Algorithms

Restructuring System Cost Accounts and Algorithms. L. Waganer 3-4 March 2008 ARIES Project Meeting at UCSD. Results Reported at Dec 07 Meeting. Presented new cost account structure that was adopted by team

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Restructuring System Cost Accounts and Algorithms

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  1. Restructuring System Cost Accounts and Algorithms L. Waganer 3-4 March 2008 ARIES Project Meeting at UCSD

  2. Results Reported at Dec 07 Meeting • Presented new cost account structure that was adopted by team • Reported that the ARIES Material Cost Database had been updated to include installed costs for first wall, blanket, shielding, primary structure, vacuum vessel, and cryostat subsystems • Reported that the ARIES Cost Accounts have been documented through accounts shown below: • Accounts 20, Land and Land Rights • Accounts 21, Structures and Site Facilities • Partially Acct 22, Power Core Plant Equipment • Acct 22.01, Fusion Energy Capture and Conversion (FWB, shielding) • Acct 22.02, Plasma Confinement (Being developed by Bromberg/Kessel) • Acct 22.03, Plasma Formation and Sustainment (in work) • Acct 22.04, Vacuum, Power Core (in work) • Acct 22.05 Primary Structure and Support, Power Core (C.Post, B. Cyl, VV, Cryost, etc) • Acct 22.06 – 13 Power Supplies, Main HT&T, Cryo, Rad Matls, Fuel Handl, Maint, I&C, and Other Plant Equipment (yet to be done)

  3. Validating/Updating Costs Difficult • Prior ARIES cost documentation is sketchy, at best (reported in ARIES II-IV Sys Studies chapter and one SSPS chapter) • Account 22 never documented in entirety • Totals reported, but some sub-accounts never shown, eg, cyro cooling, rad waste, fuel handling, maintenance, and I&C, amounting to $103M in ARIES-AT • A-II-IV Sys Studies Chapter defined algorithms (92$) for: • 22.3 Aux cooling (1.1x10-3 x Pth), should be waste heat • 22.4 Radioactive waste treatment (1,96x10-3 x Pth), should be waste mass • 22.5 Fueling handling and storage (∑ of unit prices, g/d, m3/h, constants) ? • 22.6 Other reactor plant equipment (1.78x10-3 x Pth) TBD • 22.7 Instrumentation and control $38.29 M TBD • FWBS and coil accounts used material databases (recommended) • Many other accounts used performance parameters to estimate costs (heating/CD, vacuum, primary structure, power supplies, impurity control, main heat transfer and transport), some may be appropriate

  4. Unit Costs2000$ 2008$ Spool Assembly $30/kg $36.90/kg Removable Doors $44/kg $54.12/kg Door Frame $76/kg $93.48/kg Port Enclosure $30/kg $36.90/kg Composite Rate $35/kg $43.05.kg Validating/Updating Costs Difficult • L. Bromberg and C. Kessel working on coil subsystems • TK Mau and I have started working on Heating and CD accounts • In prior ARIES estimates, Vacuum Vessel seemed to be lumped with Vacuum System in “Reactor Vacuum Systems (unless integral elsewhere)” • Algorithm was 0.024xMvac +4.09x kg/d (of gases pumped?) Ref: Mvac for Titan-I • Current ASC code computes VV volume and uses Material Table costs (for new Acct 22.05.03)but no cost computed for Vacuum, Power Core ( New Acct 22.04) • In ARIES-AT, Boeing developed a detailed design and provided a detailed Vacuum Vessel cost estimate that did not appear to be used or documented in AT Cost Summary. This is being used as the VV cost basis in the Material database. Refer to Update of ARIES-ATVacuum Vessel Design presentation of June 2000 to confirm design and cost basis

  5. Validating/Updating Costs Difficult • Divertor seems to be under “Impurity Control” (= 0.73 x Adiv), but not related to materials, design definition, or fabrication approach • Current systems code still uses this algorithm, but can adopt the materials algorithm • Primary structure should be estimated with material volume • Remaining accounts remain to be evaluated.

  6. Historical Data on Some Systems • Starfire used its shield as a vacuum vessel, hence no cost reported. • ARIES has traditionally not identified the cost of the vessel but loaded it into a general category, which ranged from $73M to $227M (2008$). • Boeing estimated AT vessel to be $48M. ITER had its vessel as $390M (first of a kind) and very large. • Vacuum equipment not easily separable from ARIES. Starfire had its at $12M. ITER’s vacuum equipment is $44M. • Most ARIES divertors are in the $10M-$20M range. ITER’s is $139M • With the assumption that the cost of the divertor is similar to the unit cost of the first wall blanket and proportional their respective areas, then RS divertor is 15% of FWB (~$15M) and AT is 34% of FWB (~$31M). Don’t have ITER areas but percentage is 53%.

  7. Comparison of ITER to ARIES-AT These are comparisons of the direct capital equipment costs. ITER is first of a kind and not competitively bid. Also these ITER costs are based on the available data as of Snowmass 2002. I had the ARIES structures algorithms but did not have the related parameters to generate individual costs and these were not documented..

  8. Comparison of ITER to ARIES-AT Ratio of ITER to AT 4 4.6 2.8, dissimilar matls Big difference ITER Vessel only All coils in AT, Big ∆ ITER uses TF Coils ITER Sys only Big ∆ Big ∆

  9. Comparison of ITER to ARIES-AT ITER Low Temp AT data not avail “ “ “ “ ITER Heat Rejection “ ITER Site El Pwr These are comparisons of the direct capital equipment costs. ITER is first of a kind and not competitively bid. Also these ITER costs are based on the available data as of Snowmass 2002. I believe the ARIES-AT costs are reasonably comparable.

  10. Cost Account Managers • No. Account CAM • Land and Land Rights Waganer • Structures and Site Facilities Waganer • Power Core Plant Equipment • 22.01 Fusion Energy Capture and Conversion • 22.01.01 First Wall and Blanket Malang • 22.01.02 Second Blanket Malang • 22.01.03 Divertor Assy Raffray • 22.01.04 High Temperature Shielding El-Guebaly • 22.01.05 Low Temperature Shielding El-Guebaly • 22.01.06 Penetration Shielding El-Guebaly • 22.02 Plasma Confinement • 22.02.01 Toroidal Field Coils Bromberg • 22.02.02 Poloidal Field Coils Bromberg • 22.02.03 Feedback Coils Kessel • 22.03 Plasma Formation and Sustainment Mau • 22.04 Vacuum, Plasma Core (equipment) Najmabadi • 22.05 Primary Structure and Support Wang • 22.06 Power Supplies, Switching and Energy Storage Cadwallader • 22.07 Main Heat Transfer and Transport Raffray • 22.08 Cryogenic Cooling, Magnets Bromberg • 22.09 Radioactive Materials Treatment and Management El-Guebaly • 22.10 Fuel Handling and Storage Steiner • 22.11 Maintenance Equipment Waganer • 22.12 Instrumentation and Control Weaver • 22.13 Other Plant Equipment Waganer • Turbine Plant Equipment Schultz • Electric Plant Equipment Schultz • Miscellaneous Plant Equipment Waganer • Special Materials Waganer

  11. Next Actions –yet to be done • Continue to work with Subsystem experts to create and verify costing algorithms for each subsystem and major component • Determine number of identical subsystems and major components necessary for the selected design (including EPR, subsystem demonstrations, DEMO, initial prototypes, and initial power reactors leading to the 10th of a kind power plant, including spares• Assess the learning curve associated with the subsystem and major components

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