Mirion Technologies SPIR-Quanta - Manual (Page 2)

Mirion Technologies (MGPI) Inc
5000 Highlands Parkway
Suite 150
Smyrna Georgia 30082
USA
T +1.770.432.2744
F +1.770.432.9179 Mirion Technologies (MGPI) SA
Lieu-Dit Calès,
Route d’Eyguières
F-13113 Lamanon
France
T +33 (0) 4 90 59 59 59
F +33 (0) 4 90 59 55 18 Mirion Technologies (RADOS) Oy
P.O. Box 506
FIN-20101 Turku
Finland
T +358 2 468 4600
F +358 2 468 4601
Mirion Technologies (RADOS) GmbH
Ruhrstrasse 49
DE-22761 Hamburg
Germany
T +49 (0) 40 851 93-0
F +49 (0)40 851 93 256
Mirion Technologies Shanghai Branch
Room 801, 78 Jiangchang
San Lu, Zhabei District
Shanghai 200436
China
T +86 21 6180 6920
F +86 21 6180 6924
SPIR-Quanta
Detection and Identification - Risks Prevention
www.mirion.com
152410EN-E
Health Physics
Division
Since norms, specifications and designs are subject to occasional change, please ask for confirmation of the information given in this publication.
DESCRIPTION
SPIR-Quanta uses a 3”x3” NaI(Tl) detector, coupled to a
spectrometric base to generate spectra from the samples
contained in a Marinelli beaker placed inside of a 30mm thick
lead shielded enclosure.
The spectrometer is controlled via Ethernet by the SPIR-Quanta
software that runs on a standard PC.
SPIR-Quanta accomodates standard Marinelli beakers:
●
1l beaker: 133N-E + L-5 cover
●
2l beaker: 233N-E + L-6 cover
PRINCIPLE OF OPERATION
The SIA/Identpro algorithm provides a multiple ROIs analysis
plus an iterative process that progressively eliminates low
confidence level candidates. The quantification is then based
on the net area estimation of the main peak of the intended
isotopes. The two steps process avoids false positive by first
checking the presence of the intended isotope and so makes
the device very robust in particular to variation of the natural
isotopes concentration within the sampled material.
Issues like interferences between Radium daughter and Cesium
are solved.
OPERATION MODE
The operation is interactive and guided by the user interface.
User-defined pop-ups are generated at each step to instruct the
user. Basically, the operation is simple, no writing nor
calculation is needed.
Preset protocols are provided and may be user customized.
The successive steps are: energy auto-calibration, background
acquisition and samples acquisition.
EXAMPLE OF PERFORMANCES
Performances has been widely evaluated using actual and
MCNP generated spectra for various intended isotopes and
various material.
Typical limits of detection in water of Cs137, Cs134, Co60 for a
10 minutes measurement are below 10Bq/l. Limits of detection
depend on sample material, on sample natural radio-nuclides
content and on ambient background.
SPECIFICATIONS
Detector : 3”x3” NaI(Tl)
Resolution: 7.5% typical (Cs-137)
Spectrometer: digital MCA, high throughput,
1024 channels, 25 keV to 3 MeV,
Ethernet link
Energy stabilization: within 1%
Range of measurement: 3 to 1000000 Bq/l or Bq/kg
Temperature range: 0°C to 45°C
External dimensions (base included):
43 cm x 28 cm x 56 cm (w x d x h)
weight: <75 kg
SIA Identification and related quantification
Detection Quantification
Medical 18F, 51Cr, 67Ga, 99Mo, 103Pd, 111In,
123I, 125I, 131I, 133Xe, 153Sm, 201Tl
18F, 51Cr, 67Ga, 111In,
123I, 131I, 153Sm, 201Tl
NORM 40K, 226Ra + daughters, 232Th +
daughters,
40K, 226Ra + daughters,
232Th + daughters
Industrial 22Na, 57Co, 54Mn, 60Co, 75Se,
133Ba, 137Cs, 152Eu, 154Eu, 166Ho,
192Ir, 207Bi, 228Th (232U), 241Am
22Na, 54Mn, 57Co,
60Co,133Ba, 137Cs,
241Am
SNM 233U, 235U, 238U, 239Pu, 241Pu,
237Np
Nuclear
Accident
131I, 132I, 133I, 133Xe, 134Cs, 137Cs 131I, 134Cs, 137Cs
Other H(n-g), Bremsstrahlung Pb X rays,
511keV, Unknown
Step by step guidance
Example
of Cs134
and Cs137
contaminated
sample and
background
spectra close
to the limit of
detection
Step by step results