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IM 201S™

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Seismic Iodine Monitor

Im 201s 001

The IM 201S monitor continuously measures the gamma volumetric activity of radioactive iodine sample, in both molecular and organic forms contained in air drawn from stacks, ventilation ducts or working areas. Can withstand seismic conditions.

Tag Features

  • Embedded 241Am source for energy spectrum stabilization against temperature changes and aging
  • 1024 channels spectrum analysis
  • 1E qualification and embedded safety related software
  • Available under 10 CFR 50 App.B, IEC61226 and ASME NQA-1 programs for safety related application

Description

The IM 201S monitor forms part of the RAMSYS™ product line. It has been developed to continuously measure the gamma volumetric activity of radioactive iodine sample, in both molecular and organic forms (methyl iodine), contained in air drawn from stacks, ventilation ducts or working areas. An NaI scintillation detector faces the activated charcoal cartridge in which radioactive iodine is trapped. The proximity of the detector and the cartridge, enclose within a 4 π/5 cm (4 π/2 in) lead shielding, serves to optimize detection efficiency. A radioactive 241Am source built into the NaI crystal allows compensation of temperature and aging related drifts. The spectrometry capability, based on a 1024 channel spectrum analysis, allows radio iodine isotope localization.

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