Continuous monitoring instrument for effluent gamma radioactivity-Fornitore globale

Room 305, Building 1, No. 6 High tech Fourth Street, Changping District Science and Technology Park, Beijing

Brief introduction

ALGThe continuous monitoring instrument for effluent gamma radioactivity is embedded²⁴¹AmStable peak sourceNaISpecial software for detectors, lead shielding rooms, and effluent monitoring（ALGS）Composed of data collection and processing terminals, as shown in the figure1.

ALGProvide waterfall plot, cumulative spectrum, dose rate over time curve, and activity of detected nuclides for the energy spectrum, as shown in the figure2. ALGThere are two working modes, one is to know in advance the possible types of nuclides, in this case,ALGPre calculate the total detection efficiency (including Compton scattering) of each nuclide, as well as the detection efficiency of each nuclide in each channelofThe probability of energy deposition occurs, and the activity of each nuclide is calculated based on the measured energy spectrum; The second working mode is that users do not know the possible types of nuclides in advance, and based on the cumulative spectrum measured over a period of time (or based on the selected dose rate curve variation interval), identify nuclides according to characteristic peaks, and calculate activity based on the pre calculated detection efficiency scale factor.

ALGThe electronic components of the detector are all military grade, with reliable performance; The efficiency scale factor calculation has been characterized by the first level national defense metrology station, traceable, and the activity calculation algorithm is advanced and reliable; The software interface is intuitive; High degree of automation.

picture1　ALGMeasuring instrument(Lead room, on-site processing unitNaIdetector)

II application area

Can be applied to continuous monitoring of gamma radioactivity in effluent from nuclear related enterprises.

III typicalperformance index

3inchNaIDetector with energy resolution less than7.5%；
DARTtype1024Dao Duodao;
Energy scale and stable spectrum: embedded²⁴¹AmThe stable peak source is used for automatic energy calibration and spectrum stabilization, which adopts a combination of software and hardware methods.
ALGSSpecial software for continuous monitoring of effluent activity:

（1） Support two working modes: measurement of known nuclide species and measurement of unknown nuclide species;

（2） Display dose rate time variation curve, waterfall plot, cumulative spectrum, nuclide identification results, activity measurement results;

（3） Fully automatic operation;

（4） Automatic alarm.

（5） Pre set efficiency scale factor;

Data collection, processing, and display terminal: microcontroller, large screen color touch screen display, Android operating system, with the farthest distance from the measurement site up to2Kilometers,IP65Design.
Lead shielding room: customized according to the measurement scenario;

4 ALGSFEATURES

Fully automatic continuous monitoring;
Support two working modes;
The measurement accuracy has been verified by a national first-class metrology institution, and the measurement reliability is guaranteedhaveGuarantee;
Customize software interface and functionality;
After electronic system failure, replace the entire machine;
After the detector malfunctions, replace it with the company's spare detector until it is repaired.