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Featuring:
radiation monitoring
systems
A Mirion Technologies Division
IM 201S
Particulate, Gas & Iodine Monitors
IM 201S
Iodine Monitor
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 ef 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 localisation.
APPLICATIONS
• Ef uent release monitoring
○ Stacks, etc.
• Radioprotection of workers
○ Containment atmosphere
○ Control room air, etc.
• Post-accident operations
○ Containment atmosphere
○ Stacks, etc.
RELATED MONITORS
• IM 201L: “light” version
• IM 201M: mobile 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
● 1E quali cation and embedded safety related
software
● Available under 10 CFR 50 App.B, IEC61226 and
ASME NQA-1 programs for safety related application
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Since norms, speci cations and designs are subject to occasional change, please ask for con rmation of the information given in this publication.
Mirion Technologies (MGPI) SA
Route d’Eyguières
FR-13113 Lamanon
France
T +33 (0) 4 90 59 59 59
F +33 (0) 4 90 59 55 18
Mirion Technologies (MGPI) Inc
5000 Highlands Parkway
Suite 150
Smyrna, GA 30082
USA
T +1 770 432 2744
F +1 770 432 9179
Mirion Technologies (MGPI H&B) GmbH
Landsberger Strasse 328a
DE-80687 Munich
Germany
T +49 (0) 89515 13-0
F +49 (0) 89515 13 169
Mirion Commercial (Beijing) Co., Ltd.
Shanghai Jiangchang Commercial Branch
Room 801, 78 Jiangchang SanLu
Zhabei District, Shanghai 200436
PR of China
T +86 21 6180 6920
F +86 21 6180 6924
IM 201S
Particulate, Gas & Iodine Monitors
PHYSICAL CHARACTERISTICS
● Radiation detected: gamma
● Detector: 1¼”x1” NaI(TI) scintillator + PMT +
241
Am
source
● Iodine cartridge: 57.7 mm (2.27 in)
● Energy range: 100 keV to 3 MeV
● Typical energy windows: 314 - 414 keV
(
131
I, Eγ 364 keV)
● 1024 channels spectrum
● Typical measurement range: 3.7 to 3.7 10
+6
Bq/m3
(10
-10
to 10-4 µCi/cc)
ENVIRONMENTAL CHARACTERISTICS
● Long term temperature:
+10°C to +40°C (+50°F to +104°F)
● Periodic temperature:
-5°C to +55°C (+23°F to +131°F)
● MTBF: > 20 000 hours, with preventive maintenance
● TID: 100 Gy (10
+4
rad)
PNEUMATIC CHARACTERISTICS
● Standard ow rate: 35 l/min (1.24 scfm)
● Pressure drop: according to the lter dust loading
MECHANICAL CHARACTERISTICS
● Dimensions: 1280 mm x 830 mm x 680 mm (50.4 in x
32.7 in x 26.8 in)
● Weight: ~ 300 kg (~ 661 lb)
● Color: gray RAL 7030 (decontaminable paint)
● Inlet tube connection: Ø 12 mm OD (1/2 in)
● Outlet tube connection: Ø 12 mm OD (1/2 in)
ELECTRICAL CHARACTERISTICS
● Power supply: refer to possible versions
● Data link outputs: 1 RS232 and 2 isolated RS485
● Alarm relays: 3 SPDT relays
● I/O: 2 isolated analog outputs and 1 isolated analog
input (0/4-20 mA)
SIGNALING
● Alphanumeric display: measurement, status…
● Sound alarm: buzzer 90 dBA at 1 meter
● Visual alarm: 3 lights (red, yellow, green)
REFERENCE STANDARDS
● Nuclear: IEC60761, IEC61171
● Environmental: IEC60780, IEEE323
● Seismic: IEC60980, IEEE344
● EMC: 2006/95/CE and 2004/108/CE, EPRI 102323,
MIL STD 461 E, IEC61000-6-2 and IEC61000-6-4
VERSIONS
● 230 Vac or 230 Vac + 400 Vac 3Ø or 120 Vac
+ 400 Vac 3Ø
● Solenoid check source
● With or without dust lter holder
● Gas grab sampler ports
ACCESSORIES
● Calibration tools
● Software
● USB converters
● Ethernet
● ESD board
www.mirion.com
144106EN-D
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