Featuring:
radiation monitoring
systems
A Mirion Technologies Division
NGM 203S
Particulate, Gas & Iodine Monitors
NGM 203 S
High Range Noble Gas Monitor
The NGM 203S monitor forms part of the RAMSYS
product line.
It has been developed to sample air in discharge
stacks, ventilation ducts or working areas. A ow
through ionization chamber is enclosed in a 4 π/5 cm
(4 π/2 in) lead shielding.
This monitor is designed to meet the noble gas
monitoring requirements set forth by the USA
Regulatory Guide 1.97 and it can be used before,
during and after an accident. It can operate in
conjunction with a shielded particulate and iodine
sampler (PIS 203) and with a low range noble gas
monitor (NGM 204) to form a wide range monitoring
system.
APPLICATIONS
• Post-accident operations
○ Containment atmosphere
○ Stacks, etc.
RELATED MONITORS
• PIS 203S: accident range particulate and iodine
sampler
FEATURES
● Designed for accident and post-accident conditions
● Durable detector without any electronic or radiation
degraded component
● 1E quali cation and embedded safety related software
● Available under 10 CFR 50 App. B, ASME NQA-1 and
IEC61226 programs for safety related application
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
NGM 203S
Particulate, Gas & Iodine Monitors
PHYSICAL CHARACTERISTICS
● Radiation detected: alpha, beta and gamma
● Detector: ow-through ionization chamber
● Sensitive volume: 100 ml (100 cc)
● Energy range: 5 keV to 3 MeV
● Typical measurement range:
○
85
Kr: 3.7 10+6 to 10
+16
Bq/m3 (10-4 to 2.7 10+5 µCi/cc)
○
133
Xe: 10+6 to 3.7 10
+15
Bq/m3 (2.7 10-5 to 10+5 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
● TID (processing unit): 25 Gy (2.5 10
+3
rad)
PNEUMATIC CHARACTERISTICS
● Standard ow rate: 35 l/min (1.24 scfm)
● Pressure drop: according to the lter dust loading
MECHANICAL CHARACTERISTICS
● Dimensions: 1305 mm x 830 mm x 680 mm
(51.4 in x 32.7 in x 26.8 in)
● Weight: ~ 310 kg (~ 684 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 (0/4-20 mA)
SIGNALING (Applicable to LPDU only)
● Alphanumeric display: measurement, status…
● Sound alarm: buzzer 90 dBA at 1 meter
● Visual alarm: 3 lights (red, yellow, green)
REFERENCE STANDARDS
● Nuclear: IEC60761
● Environmental: IEC60780, IEEE323, RG 1.97
● 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
● PIS sampler
● Dust lter holder
● Gas grab sampler ports
● Heater
ACCESSORIES
● Local & remote display units
● Calibration tools
● Software
● USB converters
www.mirion.com
144111EN-E
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