cost_variables Module

allowable first wall/blanket neutron fluence (MW-yr/m2) (blktmodel=0)

allowable divertor heat fluence (MW-yr/m2)

blanket direct cost (M$)

total account 221 cost (M$) - first wall, blanket, shield, support structure and div plates

total account 222 cost (M$) - TF coils + PF coils

total capital cost including interest (M$)

fixed cost of superconducting cable ($/m)

cost of PF coil steel conduit/sheath ($/m)

cost of TF coil steel conduit/sheath ($/m)

current drive direct costs (M$)

total plant direct cost (M$)

Full power year lifetime of heating/current drive system (y)

Calendar year lifetime of heating/current drive system (y)

Total plant availability fraction; input if iavail=0

Total plant capacity factor

indirect cost factor (func of lsa) (cost model = 0)

cost of land (M$)

cost of electricity ($/MW-hr)

capital cost of electricity (m$/kW-hr)

'fuel' (including replaceable components) contribution to cost of electricity (m$/kW-hr)

operation and maintenance contribution to cost of electricity (m$/kW-hr)

plant construction cost (M$)

cost exponent for scaling in 2015 costs model

cost exponent for pebbles in 2015 costs model

cost scaling factor for buildings

cost scaling factor for land

cost scaling factor for TF coils

cost scaling factor for fwbs

cost scaling factor for remote handling

cost scaling factor for vacuum vessel

cost scaling factor for energy conversion system

cost scaling factor for remaining subsystems

Maintenance cost factor: first wall, blanket, shield, divertor

Maintenance cost factor: All other components except coils, vacuum vessel, thermal shield, cryostat, land

amortization factor (fixed charge factor) "A" (years)

Switch for cost model:

• =0 use $ 1990 PROCESS model
• =1 use $ 2014 Kovari model
• =2 use user-provided model

Switch for the centrepost lifetime constraint 0 : The CP full power year lifetime is set by the user via cplife_input 1 : The CP lifetime is equal to the divertor lifetime 2 : The CP lifetime is equal to the breeding blankets lifetime 3 : The CP lifetime is equal to the plant lifetime

owner cost factor

User input full power year lifetime of the centrepost (years) (i_cp_lifetime = 0)

Calculated full power year lifetime of centrepost (years)

Calculated calendar year lifetime of centrepost (years)

ST centrepost direct cost (M$)

allowable ST centrepost neutron fluence (MW-yr/m2)

reactor core costs (categories 221, 222 and 223)

allowance for site costs (M$)

cost of turbine building (M$)

proportion of constructed cost required for decommissioning fund

diff between borrowing and saving interest rates

divertor direct cost (M$)

Full power lifetime of divertor (y)

Calendar year lifetime of divertor (y)

period prior to the end of the plant life that the decommissioning fund is used (years)

average cost of money for construction of plant assuming design/construction time of six years

average cost of money for replaceable components assuming lead time for these of two years

fraction of current drive cost treated as fuel (if ifueltyp = 1)

project contingency factor

fixed charge rate during construction

multiplier for Nth of a kind costs

first wall cost (M$)

Switch for plant availability model:

• =0 use input value for cfactr
• =1 calculate cfactr using Taylor and Ward 1999 model
• =2 calculate cfactr using new (2015) model
• =3 calculate cfactr using ST model

Switch for fw/blanket lifetime calculation in availability module:

• =0 use neutron fluence model
• =1 use fusion power model (DEMO only)

Allowable DPA from DEMO fw/blanket lifetime calculation in availability module

Number of fusion cycles to reach allowable DPA from DEMO fw/blanket lifetime calculation

Minimum availability (constraint equation 61)

Unit cost for tokamak complex buildings, including building and site services ($/m3)

Unit cost for unshielded non-active buildings ($/m3)

F-value for minimum availability (constraint equation 61)

Number of remote handling systems (1-10)

c parameter, which determines the temperature margin at which magnet lifetime starts to decline

Divertor probability of failure (per op day)

Divertor unplanned maintenance time (years)

Reference value for cycle cycle life of divertor

The cycle when the divertor fails with 100% probability

Reference value for cycle life of blanket

The cycle when the blanket fails with 100% probability

Fwbs probability of failure (per op day)

Fwbs unplanned maintenance time (years)

Vacuum system pump redundancy level (%)

Number of redundant vacuum pumps

Operational time (yrs)

time taken to replace blanket (y) (iavail=1)

time taken to replace both blanket and divertor (y) (iavail=1)

time taken to replace divertor (y) (iavail=1)

unplanned unavailability factor for balance of plant (iavail=1)

unplanned unavailability factor for current drive (iavail=1)

unplanned unavailability factor for divertor (iavail=1)

unplanned unavailability factor for fuel system (iavail=1)

unplanned unavailability factor for first wall (iavail=1)

unplanned unavailability factor for magnets (iavail=1)

unplanned unavailability factor for vessel (iavail=1)

Switch for fuel type:

• =2 treat initial blanket, divertor, first wall as capital costs. Treat all later items and fraction fcdfuel of CD equipment as fuel costs
• =1 treat blanket divertor, first wall and fraction fcdfuel of CD equipment as fuel cost
• =0 treat these as capital cost

Switch for net electric power calculation:

• =0 scale so that always > 0
• =1 let go < 0 (no c-o-e)

Switch for net electric power and cost of electricity calculations:

• =0 do not calculate MW(electric) or c-o-e
• =1 calculate MW(electric) and c-o-e

Level of safety assurance switch (generally, use 3 or 4):

• =1 truly passively safe plant
• =2,3 in-between
• =4 like current fission plant

interest portion of capital cost (M$)

Switch for costs output:

• =0 do not write cost-related outputs to file
• =1 write cost-related outputs to file

effective cost of money in constant dollars

ratio of additional HCD power for start-up to flat-top operational requirements

cost associated with additional HCD system power required on start-up ($)

Switch for superconductor cost model:

• =0 use $/kg
• =1 use $/kAm

Full power year plant lifetime (years)

Maintenance time for replacing CP (years) (iavail = 3)

User-input CP unplanned unavailability (iavail = 3)

unit cost for administration buildings (M$/m3)

unit cost for aux facility power equipment ($)

unit cost for aux heat transport equipment ($/W**exphts)

unit cost of auxiliary transformer ($/kVA)

unit cost for blanket beryllium ($/kg)

unit cost for breeder material ($/kg) (blktmodel>0)

unit cost for blanket lithium ($/kg) (30% Li6)

unit cost for blanket Li_2O ($/kg)

unit cost for blanket Li-Pb ($/kg) (30% Li6)

unit cost for blanket stainless steel ($/kg)

unit cost for blanket vanadium ($/kg)

vacuum system backing pump cost ($)

cost of aluminium bus for TF coil ($/A-m)

cost of superconductor case ($/kg)

unit cost for control buildings (M$/m3)

cost of high strength tapered copper ($/kg)

cost of TF outboard leg plate coils ($/kg)

vacuum system cryopump cost ($)

unit cost for cryogenic building (M$/vol)

heat transport system cryoplant costs ($/W**expcry)

unit cost for vacuum vessel ($/kg)

unit cost for copper in superconducting cable ($/kg)

cost per 8 MW diesel generator ($)

cost of divertor blade ($)

detritiation, air cleanup cost ($/10000m3/hr)

vacuum system duct cost ($/m)

ECH system cost ($/W)

unit cost for electrical equipment building (M$/m3)

MGF (motor-generator flywheel) cost factor ($/MVA**0.8)

MGF (motor-generator flywheel) cost factor ($/MJ**0.8)

cost of fuelling system ($)

outer PF coil fence support cost ($/kg)

cost of 60g/day tritium processing unit ($)

unit cost of D-T fuel (M$/year/1200MW)

first wall armour cost ($/m2)

first wall passive stabiliser cost ($)

first wall structure cost ($/m2)

cost of reactor structure ($/kg)

cost of helium-3 ($/kg)

cost of heat rejection system ($)

cost of heat transport system equipment per loop ($/W); dependent on coolant type (coolwh)

cost of instrumentation, control & diagnostics ($)

ICH system cost ($/W)

superconductor intercoil structure cost ($/kg)

lower hybrid system cost ($/W)

low voltage system cost ($/kVA)

unit cost for reactor maintenance building (M$/m3)

cost of maintenance equipment ($)

miscellaneous plant allowance ($)

NBI system cost ($/W)

cost of nuclear building ventilation ($/m3)

annual cost of operation and maintenance (M$/year/1200MW**0.5)

penetration shield cost ($/kg)

cost of PF coil buses ($/kA-m)

cost of PF coil DC breakers ($/MVA**0.7)

cost of PF burn power supplies ($/kW**0.7)

cost of PF coil AC breakers ($/circuit)

cost factor for dump resistors ($/MJ)

cost of PF instrumentation and control ($/channel)

cost of PF coil pulsed power supplies ($/MVA)

primary heat transport cost ($/W**exphts)

cost of primary power transformers ($/kVA**0.9)

cost of reactor building (M$/m3)

cost of superconductor ($/kg)

cost of superconductor ($/kA m) at 6.4 T, 4.2 K

cost of shops and warehouses (M$/m3)

cost of shield structural steel ($/kg)

switchyard equipment costs ($)

cost of TF coil breakers ($/W**0.7)

cost of TF coil bus ($/kg)

cost of TF coil dump resistors ($/J)

additional cost of TF coil dump resistors ($/coil)

cost of TF coil instrumentation and control ($/coil/30)

cost of TF coil power supplies ($/W**0.7)

cost of TF coil slow dump switches ($/A)

cost of turbomolecular pump ($)

cost of tritium building ($/m3)

cost of turbine plant equipment ($) (dependent on coolant type coolwh)

vacuum system valve cost ($)

vacuum duct shield cost ($/kg)

vacuum system instrumentation and control cost ($)

cost of PF coil superconductor windings ($/m)

cost of TF coil superconductor windings ($/m)

cost of active assembly shop ($/m3)

cost of waste disposal (M$/y/1200MW)