Automated System for Water Activity Measurement in Outlet Channels of NPPs and Nuclear Enterprises

DESCRIPTION

Automatic monitoring of gamma-ray radionuclide specific activity directly in water reservoirs in the regions of nuclear weapons testing, near nuclear storage, nuclear power plants and other objects of nuclear energetics.

Description

Application

Automatic monitoring of gamma-ray radionuclide specific activity directly in water reservoirs in the regions of nuclear weapons testing, near nuclear storage, nuclear power plants and other objects of nuclear energetics.

Features

  • High sensitivity of radionuclide activity detection
  • Full autonomy of measurement station data transfer via radio channel or cable channel into the point of information receiving, processing and archiving
  • High reliability system with simple operation

COMPLETE SET

Floating monitoring station that is situated on the platform on pontoon and contains:

  • Gamma-ray spectrometer based on submerged high purity germanium or scintillator detector
  • Transmitter receiver
  • Microprocessor device for interfaces necessary for automatic operation, self-diagnostic, calibration
  • Backup accumulators
  • Accessories for station control, calibration

Station for receiving, processing and archiving information including:

  • Radio station
  • Decoding modem connection device with personal computer
  • Software for spectra description, nuclides identification, calculation of their specific activity
  • Device for information
  • Metrological assurance, set of accessories and necessary instruments

SPECIFICATION

Parameter Value
Energy range, keV 50 – 3500
HPGe detector efficiency, % 38 *
Energy resolution for 30% efficiency detector, keV at energy
122 keV
1.33 MeV
1.0
1.9
Detection limit for Cs137 radionuclide specific activity, measurement time 1 hour, Bq/m3 200
Cs137 radionuclide specific activity measurement error for measurement time 1 hour, % < 30
Integral nonlinearity, % < 0.05
Instability of specific activity measurement from calibration source, % 10
Time of operation mode setting, h < 0.5
Time of continuous operation without prevention, days 30