Automatically screen moving vehicles for radioactive materials.
  • Portal Monitor for Vehicles
  • Continuously Screen Moving Traffic
  • High Throughput
  • Cost Effective

The TSA VM250 automatically screens vehicular traffic without the need for frequent calibration. High sensitivity allows the VM250 to be used at such as uranium enrichment plants, weapons manufacturing and storage plants, nuclear laboratories, and nuclear waste disposal and storage sites where detection of Special Nuclear Materials (SNM) is essential. The VM250 is designed for use in harsh environmental conditions.

Advanced Design Features
The TSA VM250 vehicle portal monitor has excellent sensitivity and reliability. The VM250 consists of two self-contained, weather resistant pillars placed on either side of the roadway to be monitored. The pillars are usually bolted to a concrete footing, with the interconnecting conduits installed under the roadway. Each pillar contains two plastic scintillator detectors, an occupancy detector and an amplifier. The master pillar also has a battery, power supply, battery charger, and a system controller.

Programmable Detection Parameters
Selectable settings for sensitivity, energy discrimination, and fault levels may be entered by the administrator.

When the system is powered up, it takes twenty seconds to acquire an initial background. The background is continually updated until the system is occupied. When the infra-red detectors senses occupancy, the system starts comparing the current count to the most recent background data. Alarm comparisons are made every 200ms. If the count exceeds the alarm level, both audible and visual alarms will be triggered. The system monitors itself and indicates low and high background conditions.

Flexible Detection Options
The TSA VM250 is available with a third overhead pillar for higher sensitivity. The VM250 is available in three configurations; Gamma, Neutron or a combination of Gamma and Neutron detection. Gamma provides detection of ionizing radiation and Neutron provides detection of Special Nuclear Materials (SNM) while the combined Gamma and Neutron provides the most powerful detection capabilities for radioactive isotopes even in shielded materials.

Interface Options
With the optional Remote Alarm Panel operators can view alarms up to 300m from the monitor. The TSA VM250 is compatible with TSA RAVEN™ communications software designed to both capture and view data and video images relating to a radiological detection incident.

With continual development of our products Rapiscan Systems reserves the right to amend specifications without notice. Product pictures are for general reference. Please note that due to US laws and regulations, not all Rapiscan products are available for sale in all countries without restriction. Please contact your Rapiscan Systems sales representative for more information.