| SI.Length | dimension_hotleg | from_inch(29) | Hot leg inner diameter (d1s1) |
| SI.Length | dimension_coldleg | from_inch(27.5) | Hot leg inner diameter (d1s1) |
| SI.Length | length_hotleg | from_feet(50) | Hot leg length |
| SI.Length | length_coldleg | from_feet(50) | Cold leg length |
| SI.Power | Q_total_th | 3411e6 | Total thermal output (d2s1) |
| SIadd.NonDim | Q_frac | 0.974 | Fraction of heat generatated in fuel (d2s1) |
| SI.Pressure | p_nominal | from_psi(2250) | Nominal system pressure (d2s1) |
| SI.MassFlowRate | m_flow_nominal | from_lbm_hr(138.4e6) | Nominal total coolant flow rate (d2s1) |
| SI.Temperature | T_core_inlet_nominal | from_degF(557.5) | Nominal core inlet temperature (d2s1) |
| SI.Temperature | T_core_outlet_nominal | from_degF(618.5) | Nominal core inlet temperature (d2s1) |
| SI.TemperatureDifference | T_core_avgRise_nominal | T_core_outlet_nominal - T_core_inlet_nominal | Nominal core temperature rise (d2s1) |
| SI.Temperature | T_core_avg | 0.5*(T_core_outlet_nominal + T_core_inlet_nominal) | Average temperature of core |
| SI.Length | dimension_core | from_feet(11.06) | Equivalent core diameter (d2s1) |
| SI.Length | length_fuel | from_feet(12) | Core length between fuel ends (d2s1) |
| SI.Mass | m_uranium_1 | 81639 | Fuel weight of uranium (first core) (d2s1) |
| SIadd.NonDim | nAssembly | 193 | Number of assemblies - 17x17 (d2s1) |
| String | Material_fuel | "Uranium Oxide" | Fuel pellet material |
| String | Material_cladding | "Zircaloy-4" | Cladding material |
| SI.Length | r_outer_fuelRod | 0.5*from_inch(0.360) | Outside diameter of fuel rod (d3s1) |
| SI.Length | th_clad_fuelRod | from_inch(0.0225) | Cladding thickness of fuel rod (d3s1) |
| SI.Length | th_gap_fuelRod | 0.5*from_inch(0.0062) | Gap thickness between pellet and cladding (d3s1) |
| SI.Length | r_pellet_fuelRod | 0.5*from_inch(0.3088) | Pellet radius (d3s1) |
| SI.Length | pitch_fuelRod | from_inch(0.496) | Fuel rod pitch (d3s1) |
| SIadd.NonDim | sizeAssembly | 17 | square size of assembly (e.g., 17 = 17x17) |
| SIadd.NonDim | nRodFuel_assembly | 264 | # of fuel rods per assembly (d3s1) |
| SIadd.NonDim | nRodNonFuel_assembly | sizeAssembly^2 - 264 | # of non-fuel rods per assembly (d3s1) |
| SI.Length | length_inlet_plenum | length_fuel | Length of core inlet plenum |
| SI.Area | crossArea_inlet_plenum | 0.25*Modelica.Constants.pi*dimension_core^2 | Cross area of inlet plenum |
| SI.Length | length_outlet_plenum | length_fuel | Length of core outlet plenum |
| SI.Area | crossArea_outlet_plenum | 0.25*Modelica.Constants.pi*dimension_core^2 | Cross area of outlet plenum |
| SI.Length | length_downcomer | length_inlet_plenum + length_fuel + length_outlet_plenum | Downcomer length |
| SI.Area | crossArea_downcomer | Modelica.Constants.pi*0.25*(from_inch(10*12 + 11)^2 - from_inch(10*12 + 3)^2) | Estimated flow area of downcomer from nozzle faces (d4s1) |
| SI.Length | perimeter_downcomer | Modelica.Constants.pi*(from_inch(10*12 + 11) + from_inch(10*12 + 3)) | Estimated perimeter of downcomer |
| SI.Height | pressurizer_level | 1.68 | nominal pressurizer level |
| Units.NonDim | pressurizer_Vfrac_liquid | 0.34 | nominal fraction of liquid in pressurizer |
| SI.Length | dimension_pzr | from_inch(7*12 + 8) | Pressurizer diameter (d5s1) |
| SI.Length | th_pzr | from_inch(12) | Guess of pressurizer wall thickness |
| SI.Length | length_pzr | from_inch(52*12 + 9) | Pressurizer height (d5s1) |
| SI.Volume | V_pzr | 0.25*Modelica.Constants.pi*dimension_pzr^2*length_pzr | Empty volume of pressurizer (d5s1) |
| SI.Volume | V_water_pzr_nominal | from_feet3(1080) | Pressurizer nominal water volume (d5s1) |
| SI.Volume | V_steam_pzr_nominal | V_pzr - V_water_pzr_nominal | Pressurizer nominal steam volume (d5s1) |
| SIadd.NonDim | Vfrac_liquid_pzr | V_water_pzr_nominal/V_pzr | Nominal volume fraction of pressurizer |
| Real | nSG | 4 | Total number of steam generators (i.e., 4 loops and 1 per loop) |
| String | Material_SGtube | "Inconel (d6s1)" | |
| SI.Pressure | p_shellSide | from_psi(1000) | Shell side full load pressure (d6s1) |
| SI.Temperature | T_inlet_shell | sat.Tsat - 100 | Guess at inlet shell temperature from FWH |
| SI.SpecificEnthalpy | h_inlet_shell | Medium.specificEnthalpy_pT(p_shellSide, T_inlet_shell) | Guess at inlet shell temperature from FWH |
| SI.MassFlowRate | m_flow_shellSide_per | from_lbm_hr(3.813e6) | Steam flow per steam generator (d6s1) |
| SI.MassFlowRate | m_flow_shellSide_total | m_flow_shellSide_per*nSG | Total Steam flow to steam generators |
| SI.Length | length_SGshell | from_inch(67*12 + 8) | Overall height of steam generator (d6s2) |
| SI.Length | length_lowerShell | 0.67*length_SGshell | Estimate of vertical length of lower shell |
| SI.Length | length_upperShell | length_SGshell - length_lowerShell | Estimate of vertical length of upper shell |
| SI.Length | diameter_outer_lowerShell | from_inch(11*12 + 3) | Lower shell outer diameter (d6s1) |
| SI.Length | diameter_outer_upperShell | from_inch(14*12 + 7.75) | Upper shell outer diameter (d6s1) |
| SI.Length | r_outer_upperShell_eff | 0.5*diameter_outer_upperShell*sqrt(nSG) | Upper shell outer radius effective based on nSG steam generators lumped together |
| SI.Length | th_shell | from_inch(8) | Estimate of shell thickness (s2 picture) |
| SI.Length | diameter_inner_lowerShell | diameter_outer_lowerShell - 2*th_shell | Lower shell inner diameter (d6s1) |
| SI.Length | diameter_inner_upperShell | diameter_outer_upperShell - 2*th_shell | Upper shell inner diameter (d6s1) |
| SI.Area | crossArea_SG_downcomer | 0.2*nSG*0.25*Modelica.Constants.pi*(diameter_outer_lowerShell^2 - diameter_outer_SGtube^2*nTubes) | Estimate of SG downcomer cross area (0.2 of available) |
| SI.Volume | volume_SG_downcomer | crossArea_SG_downcomer*length_lowerShell | Estimate of volume for SG downcomer |
| Real | nTubes | 6500 | # of tubes in SG, estimate based on available area |
| SI.Length | length_SGtube | 2*length_lowerShell | Estimate of SG tube length |
| SI.Length | diameter_outer_SGtube | 0.0222 | SG tube outer diameter (d1s2) |
| SI.Length | th_SGtube | 0.00127 | SG tube thickness (d1s2) |
| SI.Length | diameter_inner_SGtube | diameter_outer_SGtube - 2*th_SGtube | SG tube inner diameter |
| Medium.SaturationProperties | sat | Medium.setSat_p(p_shellSide) | Properties of saturated fluid |
| Medium.ThermodynamicState | bubble | Medium.setBubbleState(sat, 1) | Bubble point state |
| Medium.ThermodynamicState | dew | Medium.setDewState(sat, 1) | Dew point state |
| Medium.SpecificEnthalpy | h_lsat | bubble.h | Saturated liquid temperature |
| Medium.SpecificEnthalpy | h_vsat | dew.h | Saturated vapour temperature |