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NUCLEAR POWER PLANT SOLUTIONS

 

PRIMARY CYCLE

BulletReactor Model

  • Any fuel geometry or type
    • Molten salt, Gas, Water, and liquid metal
  • Neutronics/Heat Generation options
    • Built-in point kinetics
    • C# User-defined calculations
    • External calculations and temperature or heat map exchange

 

BulletHeat Exchangers and Steam Generators

  • Helical Coil
  • U-Tube Recirculating Boiler
  • Compact Heat Exchanger
  • User Defined Fluids, Pressure, Heat transfer correlations

 

BulletFlow Circulation

  • Pumps
  • Gas Circulators
  • Natural Circulation

 


RANKINE SECONDARY CYCLE

BulletSteam turbine and supporting systems

  • Start-up, shut-down and load following operation
  • Turbine trip control
  • Gland steam systems
  • Lubrication systems

 

BulletCondensers

  • Wet and dry condenser heat exchange
  • Condenser level following
  • Air leak detection

 

BulletFeed Water Systems

  • Pipeline, valve and pump sizing
  • Cavitation, flashing and condensing detection
  • Pump performance and NPSH
  • Feed water heater performance and tube leaks
  • Flash tank behavior
  • De-aerator

NuclearPowerStation

BRAYTON SECONDARY CYCLE

  • Compressors
  • Intercoolers
  • Turbines

COOLING WATER CIRCUITS

  • Pipeline, valve and pump sizing
  • Water hammer
  • Cooling tower response
  • Heat exchanger sizing
  • Water reticulation flow balancing & energy efficiency

SAFETY ANALYSES

  • Calculate temperatures, pressures and time scales for a loss of cooling accident (LOCA)
  • Calculate water hammer pressures and support loads for a tube break accident
  • Natural circulation systems
  • Plant off design calculation

CONTROL PHILOSOPHY DEVELOPMENT

  • Integrated plant transient response
  • Built-in DCS library
  • C# user scripting
  • MatLab/Simulink coupling
  • OPC coupling

IMPORTING & INTERFACING

  • Import dxf, AFT files, pcf and more
  • Fluids: Built-in library, user defined, import from Refprop, Cape-open, coolprop
  • Coupling
    • RELAP
    • ANSYS
    • MATHCAD
    • EES
    • Excel
    • OPC
    • MatLab, Simulink

ACCIDENT ANALYSES

  • Calculate temperatures, pressures and time scales for a loss of cooling accident (LOCA).
  • Calculate water hammer pressures and support loads for a tube break accident.

PWR COMPONENT MODELLING

  • U-tube steam generator: calculation of recirculation rate, void fraction, feedback to primary cycle, temperatures and pressures.
  • Once-through steam generator: calculation of boiling rates, dry out position, metal temperatures; sizing of flow distribution orifices for boiling stability
  • Reactor core calculation: coolant, cladding and fuel temperatures, neutronic feedback from built in point kinetics or external software.

INTEGRATED SYSTEM SIMULATION

  • Control philosophy testing
  • Power ramp rate calculations

VERIFICATION AND VALIDATION PACKAGE

  • Flownex is developed in a ISO9001 and NQA1 quality assurance system environment.
  • For Nuclear safety related submissions to the NRC - MTECH can provide, per case, per customer verification packages.
  • Flownex was qualified by the SA NNR for the PBMR saftey case.

HTR COMPONENT MODELLING

  • Pebble Bed or Prismatic Block Reactor core calculation: coolant, moderator and fuel temperatures, neutronic feedback from built in point kinetics or external software.
  • Once-through steam generator: calculation of boiling rates, dry out position, metal temperatures; sizing of flow distribution orifices for boiling stability
  • Passive heat removal design: calculation of natural circulation in liquids, gasses and two phase fluids.

RESEARCH OR MATERIALS TEST REACTORS

  • Calculation of core flow and temperature distribution.
  • Calculation of irradiation loop cooling and flow requirements.

GAS TURBINE ENGINE

  • Turbine and compressor sizing
  • Turbine and compressor power matching
  • Compressor surge margin prediction
  • Off-design performance prediction
  • Transient system response

 

BulletCombustion chamber

Integrated combustion chamber design and optimization including coolant flow

  • Combustion product gas composition calculation
  • Combustion process adiabatic flame temperature calculation
  • Solid-Solid radiation heat transfer
  • Gas-Solid radiation heat transfer
  • Convection heat transfer
  • Film convection heat transfer
  • Liner and solid conduction heat transfer
  • Axial (2D) conduction
  • Flow distribution between cooling slots and main flow path
  • Thermal capacitance in solids for transient modelling

BulletSecondary and coolant flow

Internal cooling system pressure, flow rate, power and heat transfer distribution for assuring effective film cooling on hot surfaces

  • Swirl calculation through integrated swirl solver
  • Labyrinth seal pressure drop calculation
  • Rotor-Rotor pressure differential and power transfer calculation
  • Rotor-Stator pressure differential and power transfer calculation
  • Free Vortex pressure differential and power transfer calculation
  • Forced Vortex pressure differential and power transfer calculation
  • Rotating nozzle pressure differential and power transfer calculation
  • Rotating channel pressure differential and power transfer calculation
  • Convection heat transfer between solids and cooling air