Mirion Technologies IM 201M - Manual

Featuring:
radiation monitoring
systems
A Mirion Technologies Division
IM 201M
Particulate, Gas & Iodine Monitors
IM 201M
Mobile Iodine Monitor
The IM 201M 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 effi ciency. A
radioactive 241 Am source built into the NaI
christal allows compensation of temperature and
aging related drifts. The spectrometry capability,
based on a 1024 channel spectrum analysis, allows
radio iodine isotope localization.
APPLICATIONS
• Effl uent release monitoring
• Radioprotection of workers
○ Containment atmosphere
○ Control room air, etc.
• Operational process monitoring
RELATED MONITORS
• IM 201L: “light” version
• IM 201S: seismically qualifi ed version
• PING 206S: version with particulate and noble gas
• PIM 206S: version with particulate
FEATURES
● Embedded 241 Am source for energy spectrum
stabilization against temperature changes and aging
● 1024 channels spectrum analysis
●
Effl uent trapping of both molecular and organic forms
of iodine
●
Can be used as temporary bypass for IM 201S or
IM 201L to maintain full monitoring capability during
maintenance