New alarm classification feature for the detection of radioactive sources - Bertin Instruments

Waste and recycling control

New alarm classification feature for the detection of radioactive sources

Sources: Bertin Instruments

Context

The use of radioactive materials in the industry, safety and medical fields is becoming increasingly common around the world and generates an increased risk of source dispersion.
Waste disposal centers, as well as waste to energy plant, scrap yards, steel mills and foundries are required to set up a radioactivity check on handled materials, using Radiation Portal Monitors (RPM).
RPM, installed at the gate of the sites, alerts the operator of the presence of orphan sources and/or contaminated materials in the load so that the safety of the site, its workers and the environment is always ensured. In the event of an alarm, it is essential to obtain the maximum of information about the cause in order to better understand the risk and to provide an appropriate response.

Alarm classification

When an alarm is triggered, this new generation of RPM selects in real-time the detected samples for each installed counting channel, analyzing their energy distribution based on models developed by Bertin R&D team. This innovative software informs the operator automatically about the classification as ”Alarm-Artificial”, ”Alarm-Artificial-Industrial” or ”Alarm-Artificial-Medical”. When the event is classified as “Alarm-Artificial-Industrial” or “Alarm-Artificial- Medical” and the necessary data has been collected, an additional algorithm is applied for estimating the potential contaminant (Cs137, Co60, Na22 for “Artificial-Industrial” or Tc99, In111, I131, Co57 for “Artificial-Medical”).

If the spectral analysis is inconclusive or the origin is natural, the system will only display an “alarm“ sign.

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