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You are here:   Home Our Products Radiation Detection Portal Monitors
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TSA PM700

A high sensitivity walk—through portal monitor to automatically scan pedestrian traffic for radioactive materials.

High Sensitivity Portal Monitor
Continuously Scan Moving Pedestrians
Gamma and Neutron Radiation Detection Options
Past, Seamless Integration

The TSA PM7OO automatically scans pedestrian traffic without the need for frequent calibration. They are intended for applications where the relatively low energy emissions from 235U and 239Pu are the main concern. They are currently in use at uranium enrichment plants, weapons manufacturing plants, weapons storage sites, nuclear laboratories, nuclear waste disposal and storage sites where detection of Special Nuclear Materials (SNM) is essential.

Advanced Design Features
The TSA PM7OO monitor is a stand-alone pedestrian portal monitor with excellent sensitivity and reliability. The PM7OO large detectors and unique detection algorithm improve its performance to the point that it can achieve ASTM Standard C 1169 Category III* sensitivity for SNM. All of the essential components are contained in the pillars; radiation detectors, controller, and occupancy detector. The system operates from an internal battery. The battery is constantly charged from the site’s AC line during normal operation. In the event of a power outage, the battery permits continued operation for at least 8 hours. Programmable Detection Parameters Selectable settings for sensitivity, energy discrimination, and fault levels may be entered by the administrator.

Easy-to-Operate
After the initial site preparation is completed, the system can be installed and operating in less than an hour. When the system is powered up, it acquires an initial background count typically within 120 seconds. The background count is continually updated until the system is occupied. When the monitor senses occupancy, the system starts comparing the current count with 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 PM7OO 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 PM7OO is compatible with TSA RAVEN” communications software designed to both capture and view data and video images relating to a radiological detection incident.

Specifications

Sensitivity Gamma: Will detect 3g HEU or 0.08g 239Pu when tested in accordance with ASTM Standard C 1236 for Category III* monitors.
Neutron*: will detect 120g of 99% shielded 239Pu based soley on neutron detection.
Detectors Gamma: Two 35 h x10 w x 1.5 d in. (88.9 x 25 x 3.8 cm) organic plastic scintillator detctors per pillar; provides approximately 2,080 in3 (35.4 liters) of detector volume per system.
Standard Gamma and Neutron: Two 35 h x 10 w x 1.5 d in. (88.9 x 25 x 3.8 cm) organic plastic scintillator detectors and two 2 in. diameter x 36 in. (5 x 91 cm) He3 neutron detectors per pillar The scintillator detectors are shielded on four sides with 0.375 in. (10 mm) of lead.
High Sensitivity Gamma and Neutron: Two 30 h x 6 w x 1.5 d in. (76.2 x 15.2 x 3.8 cm) organic plastic scintillator detectors and two 2 in. diameter x 36 in. (5 x 91 cm) He3 neutron detectors per pillar The scintillator detectors are shielded on four sides with 0.375 in. (10 mm) of lead.
Alarm Level SPRT for neutron, N* sigma for gamma entered from the numeric keypad
False Alarm Rates Typically less than 1 in 1,000 passages, as tested in accordance with ASTM Standard C 1169*
Alarm Indication Gamma alarms are indicated by a red strobe light on the master pillar. High and low faults along with other fault conditions are indicated by an amber light. Neutron alarm is indicated by a blue strobe light
Display Alphanumeric LCD, 4 lines x 16 characters
Communications RS-232 Serial Port and Ethernet communications capabilities
Data Storage 256k bytes of flash memory is used to store average hourly background and alarm data.
Power Requirements 90 — 250 Vac, 47 - 63 Hz, less than 100 VA
Battery Life Greater than 8 hours normal operation
Dimensions 84hx26wx8din.(214x66x20cm)
Typical Pillar Spacing 35 in. (889 mm)
Weight Gamma: - 400 lb (182kg) per pillar
Neutron: -600 lb (273kg) per pillar
Environmental -4° to 122° F (-20° to 50°C)