ARIES Project Meeting, L. M. Waganer, 12-13 Dec 2007 Page 1 Restructuring System Cost Accounts and...

ARIES Project Meeting, L. M. Waganer, 12-13 Dec 2007

Restructuring System Cost Accounts and Algorithms

L. Waganer

12-13 December 2007ARIES Project Meeting at GT

Atlanta, GA


Applicability of Cost Accounts

The Cost Accounts we are defining should apply both to the Demo plant as well as be generic enough to apply to future commercial tokamak fusion power plants.

We are trying to be more detailed to convey and describe the design details, especially those associated with our recommended design approach.

But we also would like to be general enough encompass all future design options that might be considered.

It is primarily aligned with the Tokamak confinement concept, but with minor adjustments, it should be applicable to other magnetic and inertial confinement concepts.


Previous Cost Account Rework In the June meeting, I presented:

•Revised Land and Land Rights, Accounts 20

•Structures and Site Facilities, Accounts 21

In the September meeting, I presented a more detailed breakdown of the remainder of the Plant Accounts 22-26, essentially a more detailed and complete description of the traditional fusion plant accounts

It was recommended that the Reactor Plant accounts be reorganized to reduce the number of sub-accounts and group accounts more functionally. After several iterations with Laila El-Guebaly and other subsystem experts, we have developed a more functional breakdown of the Power Core Plant Equipment (was Reactor Plant Equipment).

Traditional Accounting Scheme

New Accounting SchemeI will be opening the spreadsheet (new recommended cost

accountsRevC.xls), but the presentation will show the areas discussed. ITER WBS Scheme, Proposed


Summary of High Level Accounts

• Main changes were to elevate some power core accounts and regroup or separate others

22 Power Core Plant Equipment22.01 Neutronic Conversion and Capture22.02 Plasma Confinement22.03 Plasma Heating, Current Drive, Startup, Stability Control, and Fueling22.04 Vacuum, Power Core22.05 Primary Structure and Support, Power Core22.06 Power Supplies, Switching and Energy Storage22.07 Main Heat Transfer and Transport 22.08 Cryogenic Cooling, Magnets 22.09 Radioactive Materials Treatment and Management (off-line)22.10 Fuel Handling and Storage (on-line)22.11 Maintenance Equipment22.12 Instrumentation and Control22.13 Other Plant Equipment

22 Power Core Plant Equipment22.01 Power Core22.02 Main Heat Transfer and Transport 22.03 Cryogenic Cooling 22.04 Radioactive Materials Treatment and Management (off-line)22.05 Fuel Handling and Storage (on-line)22.06 Maintenance Equipment22.07 Instrumentation and Control 22.08 Other Plant Equipment

Traditional Recommended

22 sub-accounts


Details of Revised Accounts (1)

• Changed Reactor Plant Equipment to Power Core Plant Equipment• Reactor Equipment changed to Neutronic Conversion and Capture, which includes all neutron capture and shielding (primary) subsystems• May want to provide costing algorithms for all the subaccounts

22 Power Core Plant Equipment22.01 Neutronic Conversion and Capture ( or In-Vessel Components?)

Note: Vacuum Vessel is in Acct 22.05.03 as a structural element, but it has shield attritbutes

22.01.01 First Wall and Blanket, replaceable, inboard and outboardFirst wall and blanket structure with cooling channels

First wall coating

Plenum, manifolding, and piping

Structural support, if separate

Breeding material, if ceramic and contained (not liquid)

Electrical and/or thermal insulator, if required

Multiplier, if required



• Changed Reactor Plant Equipment to Power Core Plant Equipment• Reactor Equipment changed to Neutronic Conversion and Capture, which includes all neutron capture and shielding (primary) subsystems• May want to provide costing algorithms for all the subaccounts

22 Power Core Plant Equipment22.01 Fusion Energy Conversion and Capture

Note: Vacuum Vessel is in Acct 22.05.03 as a structural element, but it has shield attritbutes

22.01.01 First Wall and Blanket, replaceable, inboard and outboardFirst wall and blanket structure with cooling channels

First wall coating

Plenum, manifolding, and piping

Structural support, if separate

Breeding material, if ceramic and contained (not liquid)

Electrical and/or thermal insulator, if required

Multiplier, if required

22.01.02 Second Blanket, life of plant,outboard (maybe inboard)22.01.03 Divertor Assembly, upper and lower, replaceable22.01.04 High Temperature Shielding, outside of blanket and divertor, life of plant22.01.05 Low Temperature Shielding, outside of high temperature shield, life of plant22.01.06 Penetration Shielding (low temperature, active and passive)


Details of Revised Accounts (2) 22.02 Plasma Confinement (or Magnet System?)

22.02.01 Toroidal Field Coils22.02.02 Poloidal Field Coils (Central Solenoid and Outer Poloidal), Lower Spares included22.02.03 Feedback Control Coils (Normal conducting)

22.03 Plasma Heating, Current Drive, Startup, Stability Control, and Fueling22.03.01 Heating and Current Drive (Primarily Steady State)

22.03.01.01 Ion Cyclotron Resonance Frequency (ICRF) Fast Wave22.03.01.02 Lower Hybrid (LH) Wave Plasma Heating and Current Drive22.03.01.03 ECRF (Electron Cyclotron) Plasma Heating and Current Drive22.03.01.04 Neutral Particle Beam Plasma Heating, Current Drive and Rotation

22.03.02 Startup 22.03.01.01 Electron Cyclotron Resonance Frequency (ECRF) Wave Plasma Breakdown

22.03.01.02 Current Initiation and Ramp-Up (ICRF fast waves, etc.)22.03.03 Stability Control (Primarily Transient)

22.03.03.01 Electron Cyclotron Resonance Frequency (ECRF) Wave Plasma Control22.03.03.02 Neutral Particle Beam Plasma Control

22.03.04 Plasma Fueling and Constituent Control22.03.04.01 Pellet Injection Fueling and Consitutent Control22.03.04.02 Neutral (Particle) Beam Injection (NBI) Fueling and Consitutent Control

• Elevated Magnet systems and converted to functional title• Grouped Plasma Heating, Current Drive, Startup, Stability Control and Fueling – These options are thought to be representative of those needed for these functions



• Elevated the Power Core Vacuum system and separated it from all other vacuum subsystems for ancillary functions• Primary Structure and Support is representative of the Tokamak system as defined

22.04 Vacuum, Power Core[Assume Rad Matl Trtmt/Mgmt and Fuel Handling have dedicated vacuum and cryo systems][This eliminates any cross-containation of radioactive materials.]

22.04.01 Helium Liquifier-Refrigerators22.04.02 Cryogenic Pumps22.04.03 Roughing or Backing Pumps22.04.04 Vacuum Ducts (vac duct shielding in 22.01.06) 22.04.05 Plumbing, Cryogenic

Leak Detection? Or include in Instrumentation?22.05 Primary Structure and Support, Power Core

22.05.01 Center Post, Power Core22.05.02 Bucking Cylinder22.05.03 Vacuum Vessel22.05.04 Cryostat and Thermal Shield22.05.05 Thermal Isolation Struts22.05.06 Common Dewar22.05.07 Anti-Torque Structure22.05.08 Carry-Through Structure22.05.09 Shield Pedestal22.05.10 Equipment Support Structure



• Created a Power Supply account for all major power core systems – there may be some minor Power Core PS subsystems that need to be added• On the Main Heat Transfer and Transport, two types of accounts are identified, based on liquid or gaseous transport media. If the chosen design is Dual Coolant, both accounts will be required to describe the complete system.

22.06 Power Supplies, Switching and Energy Storage22.06.01 Power Supplies, Heating, Current Drive, Stabilty Control and Fueling22.06.02 Power Supplies, TF Magnets22.06.03 Power Supplies, PF Magnets (including CS and outer PF)22.06.04 Power Supplies, Feedback Control Magnets

22.07 Main Heat Transfer and Transport If a dual coolant blanket is used, both helium and liquid primary systems will be used

22.07.01 Primary (water or liquid metals) Coolant (Servicing first wall, blanket, and HT shield)

22.07.02 Primary (Helium) Coolant (Servicing first wall, blanket, and HT shield) (if used)

22.07.03 Limiter or Divertor Primary Coolant (If a separate System) 22.07.04 Intermediate (Secondary) Coolant (If Used)22.07.05 Low Grade Heat Removal (Low temp system, minimal/no energy recovery)



• Created a Cryogenic Cooling account for magnet systems – other plant systems may need dedicated cryogenic systems• The Radioactive Materials Treatment and Management off-line processes all liquid, gaseous, and solid materials• The Fuel Handling and Storage is the on-line processing of the power core gases and liquids as well as the atmospheric tritium recovery in the Power Core, Hot Cell, and Fuel Handling Buildings

22.08 Cryogenic Cooling, Magnets 22.08.01 Helium Liquifier - Refrigerator (do we need refr for Nitrogen and others)22.08.02 Liquid Helium Transfer and Storage22.08.03 Helium Gas Transfer and Storage22.08.04 Liquid Nitrogen Transfer and Storage

22.09 Radioactive Materials Treatment and Management (off-line)22.09.01 Liquid Materials Processing Equipment (including final detritiation)22.09.02 Gaseous Materials Processing Equipment (including final detritiation)22.09.03 Solid Materials Processing Equipment including detrititation

22.10 Fuel Handling and Storage (on-line)22.10.01 Chamber Exhaust Gas Processing Equipment22.10.02 Purge and Cover Gas Processing Equipment22.10.03 Primary Coolant Stream (LiPb) Processing Equipment (including on-line adjustment of Li enrichment)22.10.04 Other Liquid and Gaseous Coolant Stream Processing Equipment22.10.05 Isotope Separation Equipment22.10.06 Tritium, Deuterium, and DT Storage Equipment22.10.07 Atmospheric Tritium Recovery Equipment (Power Core, Hot Cell, Fuel Handling Buildings)



• There are three categories of Maintenance Equipment, In-Vessel, Hot Cell, and other remote maintenance equipment (ECH, vacuum pumps, transport equipment, cranes, etc)• Instrumentation and Control includes all instrumentation, control, monitoring, data acquisition, communication, diagnostics, and health monitoring/prediction

22.11 Maintenance Equipment22.11.01 In-Vessel Maintenance Equipment22.11.02 Hot Cell Maintenance Equipment22.11.03 Other Plant Equipment Remote Maintenance Equipment

22.12 Instrumentation and Control22.12.01 Power Core Instrumentation & Control Equipment22.12.02 Radiation Monitoring 22.12.03 Isolated Indicating & Recording 22.12.04 Data Acquisition22.12.05 Communications

Assume diagnostics and health monitoring included in instrumentation (22.12.01)22.13 Other Plant Equipment

22.13.01 Special Heating Equipment22.13.02 Coolant Receiving, Storage and Makeup Equipment22.13.03 Gas Systems Equipment22.13.04 Inert Atmosphere Systems (Power Core and Hot Cell Buildings)


More Definition on Power Core Algorithms

• Refined the ARIES Material Cost Database- Used the most relevant cost estimate from prior studies to develop a 2007 cost baseline for commercial studies- For the Demo, we will need to increase the cost basis to account for 1st of a kind and development costs

• Applied that cost data to current power core subsystem materials selection (DC blanket and divertor) for baseline unit cost development input into Systems Code- Unit costs are developed for Power Core and Primary Structure including Vacuum Vessel and Cryostat


Next Actions• Continue to work with Subsystem experts to create and verify costing algorithms for each subsystem and major component – Plan to assign an Responsible Person to each account• 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

ARIES Project Meeting, L. M. Waganer, 12-13 Dec 2007 Page 1 Restructuring System Cost Accounts and...

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