Neutron Flux Assemblies

NFA-09.03: Digital Reactivity Meter

  • Detectors: fixed position compensated ionisation chamber
  • Neutron flux period time and reacttivity measurement
  • Typical measuring ranges: 104 to 5·1010 nv (compensated ionisation chamber type KNK-53)
  • Period time range: -3 s ∞ +3 s
  • Trip signals: power level, period time
  • Self testing capability
  • % Power, current range logarithmic power, period time, reactivity outputs.

Details

NFA-09.04: Pulse Range Neutron Flux Monitoring and Safety Assembly

  • Detectors: fixed position fission chamber
  • Neutron flux and period time measurement
  • Typical measuring ranges:
    • Pulse range: 1 to 106 nv (fission chamber type CFUL08)
    • AC range: 104 to 2·1010 nv (fission chamber type CFUL08)
  • Period time range: -3 s ∞ +3 s
  • Trip signals: power level, period time
  • Self testing capability
  • % Power, pulse range logarithmic power, multi-range linear power, period time outputs.

Details

NFA-09.06: Wide Range Neutron Flux Monitoring and Safety Assembly

  • Detectors: fixed position fission chamber and compensated ionisation chamber
  • Neutron flux and period time measurement
  • Neutron flux range: 1 to 1011 nv
  • Typical measuring ranges:
    • Pulse range: 1 to 106 nv (fission chamber type CFUL08)
    • AC range: 104 to 2·1010 nv (fission chamber type CFUL08)
    • Current range: 104 to 1011 nv
      (compensated ionisation chamber type KNK-53)
  • Period time range: -3 s ∞ +3 s
  • Trip signals: power level, period time
  • Self testing capability
  • % Power, wide range logarithmic power, multi-range linear power, period time outputs.

Details

NFA-06.08: Power Controller Assembly

  • 10-9 to 10-3 A detector current
  • Manual, automatic operating mode
  • Special DDC algorithm for automatic control
  • Self testing capability

The NFA-09.08 Power Controller Assembly can be used for manual and automatic control of the power level of nuclear research reactor on the base of neutron flux level. The equipment can be also used in intermediate and power range for neutron flux monitoring channel. It is designed to calculate power, deviation signal, and set point signal and to produce signals for the safety logic.

Details

NFA-09.10: Current Range Neutron Flux Monitoring and Safety Assembly

Details