The new detection unit BDPN-100, designed to measure intermediate neutron flux was developed as part of activities under the contract for supply of radiation monitoring system for the universal nuclear-powered ice-breaker of Project 22220. Design and specifications of the unit were developed taking into account its application at ships with nuclear propulsion. The unit consists of a thermal neutron detection module placed inside a shielding of moderator material.
Main specifications:
| Detector type | 3He counter |
| Measuring range of intermediate neutron flux | 3 ÷ 3·105·cm-2·s-1 |
| Limits of basic relative measurement error | ±30 % |
| DC supply voltage | 12 V |
| Current consumption | 400 mA |
| Dimensions | 650×250×266 mm |
| Weight | 33 kg |
| Operating conditions: | |
| ⦁ ambient temperature | minus 10 ÷ +60 °C |
| ⦁ relative humidity | up to 98 % at 35 °C |
Detection unit BDPN-100 is listed in the State Register of measuring instruments under No.65559-16 and was approved by the I.I. Afrikantov OKBM for use at universal nuclear-powered icebreaker of Project 22220.
