AT6105 Spectrometric System for Radiation Monitoring

This stationary system is designed for continuous and uninterrupted dosimetric and spectrometric radiation monitoring of land, facilities, wells and other sites.

The System is a network of interconnected gamma radiation detection units with connection to PC. Detection units are monitored and controlled by "SSRM" software to collect and display all measurement data on PC screen.


No switchboard unit is used for single-channel variant (SSRM-АТ6105 with one detection unit).
 

OPERATING PRINCIPLE

SSRM-АТ6105 operating principle is based on intermittent reading of dose rate measurement result and instrument spectrum of gamma radiation for each detection units in the system. The measured spectrum is used to identify the composition of gamma radiation source.

If dose rate value transmitted by the Detection unit exceeds "Alarm" threshold setting or an "alarming" nuclide has been identified (software setting for each detection unit), the system initiates a sound and visual alarm on the PC.
 

APPLICATIONS

Well monitoring in radioactive waste disposal sites

Monitoring of radioactive and nuclear material waste repository areas

Part of radionuclide certification service

Induced-radioactivity well survey

Liquid radioactive waste monitoring
 

FEATURES

Separate display of spectra and dose rate data by each detection unit on site plan or terrain map

Energy range expandable to 5 MeV

Up to 32 detection units

Sealed detection unit construction
 

SYSTEM FUNCTIONS

Continuous measurement of gamma radiation spectra in a set period of time

Measurement of gamma radiation dose rate

Identification of source radionuclide composition

Evaluation of exceeded dose rate threshold

Activation of sound and light alarm when threshold levels are exceeded or monitored radionuclides are identified

All data stored in a log and event history

Test of detection unit operation

Detection unit stabilisation by check sample


"SSRM" Software

System specification

Number of detection units

1 ... 32

Maximum communication line distance between detection units and PC

1000 m

Maximum communication line distance between switchboard unit and PC

100 m

Identified radionuclides

Medical ▪ Industrial ▪ Natural

Optional services

Library of identified radionuclides can be modified

Initialisation time

1 min

Continuous run time

24 h for AC supply, 100-230 V, 50-60 Hz; 6 h for self-contained power supply from fully charged battery pack.

PC interface

USB / Bluetooth (via interface adapter)

System detection units specifications

Gamma radiation detection units

BDKG-201M

BDKG-203M

BDKG-205M

BDKG-211M

Detector

Scintillation,

NaI(Tl) Ø25х16 mm

Scintillation,

NaI(Tl) Ø25х40 mm

Scintillation, NaI(Tl) 40x40 mm

Scintillation, NaI(Tl) Ø63x63 mm

Energy range

20 keV ... 3 MeV

20 keV ... 3 MeV

20 keV ... 3 MeV

20 keV ... 3 MeV

Gamma radiation dose rate measurement range

50 nSv/h ...

1 mSv/h

30 nSv/h ...

500 μSv/h

30 nSv/h ... 300 μSv/h

30 nSv/h ... 120 μSv/h

Limit of dose rate measurement intrinsic relative error

±20%

±20%

±20%

±20%

Energy dependence relative to 662 keV (137Cs)

±20% (for energy range from 40 keV to 3 MeV)

Typical resolution at 662 keV (137Cs)

8%

8%

7.5%

7.5%

Sensitivity to gamma radiation

cps/μSv·h-1

cps/μSv·h-1

cps/μSv·h-1

cps/μSv·h-1

241Am

1400

3600

5400

13900

137Сs

165

400

800

2450

60Сo

80

190

420

1300

Maximum input statistical load

105 s-1

105 s-1

105 s-1

105 s-1

Number of ADC channels

1024

1024

1024

1024

Burn-up life

100 Sv

100 Sv

100 Sv

100 Sv

Radiation overloading

Detection unit withstands 10-fold measurement range upper limit increase for up to 5min during gamma radiation dose rate measurement

Protection class

IР68

IР68

IР68

IР68

Interface

USB / RS 232 / RS 485 / Bluetooth (via interface adapter)

Operation temperature range

-35°С ... +55°С

-35°С ... +55°С

-35°С ... +55°С

-35°С ... +55°С

Relative humidity with air temperature ≤40°С without condensation

98%

98%

98%

98%

Overall dimensions

Ø63х313 mm

Ø63х333 mm

Ø63х333 mm

Ø90х350 mm

Weight

1 kg

1 kg

1 kg

2 kg

 

Design and specifications are subject to change without notice

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