PM-702B

TSA’s personnel portal monitor, model PM-702B, is a highly reliable system for the radiometric protection of Special Nuclear Material (SNM). It is designed to exceed the criteria for an ASTM Standard C 1169 Category II* SNM monitor which will detect 10 grams of ²³⁹Pu (HEU) on a walk-through basis.

The PM-702B is suitable for indoor or outdoor installation. The system consists of three main components; two vertical pillars each containing an organic plastic scintillator detector, and a crossover pillar. An optional grated step through feature provides optimal SNM monitoring.

A numeric keypad alarm with an LCD display attaches to the pillar and provides both audible and visual alarm indicators. RS-232 communications capability is optional. The system operates from an internal battery. Under normal conditions the memory should be adequate to store data for at least 3 months of operation.

Applications

The PM-702B personnel portal monitor was designed for monitoring applications that do not require the very high sensitivity of TSA’s PM-700AG or for situations that require a semi-portable monitor.

While it has adequate sensitivity for security applications, it was primarily designed for use in hospitals, laboratories, and other locations where radioactive SNM materials need to be monitored.

Specifications

SENSITIVITY:

Will detect 10g ²³⁵U (HEU) or 0.30g ²³⁹Pu; when tested in aaccordance with ASTM Standard C 1169 Catagory II* for pedestrian SNM monitors.

DETECTORS:

One, 72"h x 3"w x 3"d (183 x 8 x 8 cm) organic plastic scintillator detector per pillar; provides approximately 1296 in³ (21.2 1iters) of detector volume per system.

ALARM LEVEL:

N*sigma, entered from the numeric keypad

FALSE ALARM RATES:

Typically less than 1 in 1,000 passages

ALARM INDICATION:

Audible and visual alarms

DISPLAY:

LCD, 4 lines x 20 characters

COMMUNICATIONS:

RS-232 communications capability (optional)

DATA STORAGE:

Battery backed RAM (128 KB) is used to store average hourly background data and alarm data. Under normal conditions the memory should be adequate to store data for at least 3 months of operation.

POWER REQUIREMENTS:

90 - 250 Vac, 50 - 60 Hz, or 6 alkaline D cells which provide approximate 12 hours of operation.

DIMENSIONS:

Overall size: 93"h x 53"w x 9"d (236 x 135 x 23cm)
The system consists of three main components; two vertical pillars, each one is 6" diameter x 83"h (15 x 211cm), with 6" diameter (15cm) crossover which provides 32" (81cm) pillar spacing.

WEIGHT:

≈120 lb (54kg) per pillar

*ASTM Standard C 1169 is available from TSA Systems, Ltd. or The American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428, (610) 832-9585.