Safe Training Systems Ltd. (STS)

- Model 908 TSA PRM470 - Simulator


The STS 908 TSA PRM470 is in use with training facilitators, training emergency services and MOD personnel in emergency preparedness exercises, the simulator allow the trainers to establish realistic scenarios such as covert identification of sources, lost source recovery and routine monitoring. The STS 908 system comprises a modified TSA Systems PRM 470 and a radiofrequency source, such as the STS 914 minature source, concealed in a camouflaged container to simulate the radiation source.

The simulated instrument uses a sophisticated detector to measure the RF signal from the source, and this is then displayed on the meter, in appropriate units. Because the instrument responds directly to the signal from the source, the system provides an extremely realistic simulation.

Two major benefits arise from the use of radio signals in this way - the system obeys the Inverse Square Law, thus simulating ionising radiation and secondly, the shielding properties of materials affects the simulated radiation in a similar way to ionising radiation.

Simulators provide an ideal way of testing and qualifying staff - Staff may be set real problems to resolve as part of their test or qualification for a certain job function. Examples could include finding a lost source, limiting their exposure by time-and-distance shielding, or performing a task without exceeding a certain dose.

We are always happy to look at new instruments and are able to bespoke instruments and sources to customers requirements.

The STS Model 908 consists of a real TSA PRM470 meter, but with additional STS electronics installed within the case and powered from a separate battery supply.

The instrument operates using an STS simulated microwave source which emits a field detected by the instrument and the resultant reading is displayed as a dose rate on the PRM Display.

The STS 908 is not designed to be intrinsically safe and therefore should not be used in hazardous environments. The units are not waterproof and contain delicate and sensitive electronics which may be caused to fail if exposed to moisture. Units should be stored in a clean and dry environment, batteries should be removed if storing for more than 4 weeks. Instrument response may be affected by environmental conditions such as the presence of metal shielding and substantial walls which may shield the source.