Monitoring Device KDU-6BM Shipboard radiation monitoring equipment
Description
KDU-6BM is a state-of-the-art development replacing the outdated Soviet KDU-6B unit, which, unlike its predecessor, allows taking measurements ranging from background values, as well as more accurate determining of the direction towards the detected radiation source (four detecting units have been applied instead of two).
The product is a part of the ship’s life support system and is designed to collect, process, visualize information about radiation environment aboard and determine the direction towards the source of radiation in order to take measures on crew protection from ionizing radiation and radioactive contamination, and ship maneuvering in the area that has been exposed to radioactive contamination from nuclear weapons, man-triggered disasters or other reasons.
Purpose of Use
- Display of measurement results of ambient dose equivalent rate (DER) of gamma radiation obtained from the BDBG-6BM detecting units of gamma radiation
- Determining the direction towards the source of radiation
- Sound and light alarms of exceeding the gamma DER threshold levels
Specifications
| Key specifications of the detecting units | ||
| Measurement range of gamma radiation DER | μSv/h | 0.05 … 107 |
| Main relative permissible error limit of DER measurement at 137Cs calibration with 0.95 confidence probability | % | ±(15+2/H*(10)),
where H*(10) is a numeric value of DER in μSv/h |
| Energy range of the detected gamma radiation | MeV | 0.05 … 3.00 |
| Energy dependence of measurement results of the detecting unit while gamma DER measurement within the energy range from 0.05 to 1.25 MeV | % | ±30 |
| Anisotropy of the detecting unit at gamma quanta incidence at angles from + 60o to -60o on horizontal and vertical planes with regard to the main measurement direction marked with “+” symbol, for 137Cs and 60Co isotopes does not exceed | % | ±30 |
| Operating supply voltage range of the detecting unit from external stabilized power supply | V | 7 … 13 |
| Useful current of the detecting unit for the whole range of the measured gamma radiation DER, not more than | mA | 30 |
| Time of operating mode setting and measurement time of the detecting unit, not more than | min | 3 |
| Unstable readings of the detecting unit during 24 hours of continuous operation, not more than | % | 5 |
| Additional relative permissible error limit at measurement caused by environmental temperature change from – 40 to +60 оC | % | 5 per each 10 оC of deviation from +20 оC |
| Interface | RS-485 | |
| Dimensions of the detecting unit without fastening elements, not more than | mm | 100 × 80 × 250 |
| Weight of the detecting unit without fastening elements, not more than | kg | 0.5 |
| Ingress protection rating | IP57 | |
| Environment of use | ||
| – air temperature | оC | -40 … +60 |
| – relative humidity | up to 100 % given +50 оС and lower temperatures with humidity condensation | |
| Key specifications of the concentrator unit | ||
| Range of gamma radiation DER values display | μSv/h | 0.01 … 107 |
| Time of operating mode setting, not more than | min | 1 |
| Time of continuous operation | hrs | 24 |
| Operating supply voltage | V | ~220 (50 Hz) |
| Power consumption, not more than | W | 25 |
| Dimensions, not more than | mm | 390 × 390 × 175 |
| Weight, not more than | kg | 19 |
| Ingress protection rating | IP23 | |
| Environment of the concentrator unit use | ||
| – air temperature | оC | 0 … +40 |
| – relative humidity | up to 98 % given +40 oС and lower temperatures, non-condensing | |
The product provides for the two threshold levels of 0.3 μSv/h and 5 μSv/h. In case of exceeding, the concentrator unit changes the color of gamma radiation DER display, highlights the transparencies of the established direction towards the radiation source, and triggers audio alarm. If the value of the gamma radiation DER measured by any of the detecting units exceeds 5 μSv/h, the concentrator unit lights up “IN ZONE” transparency.
