Neutron BackScatter Moisture Detection

A radioactive source emits high-energy neutrons into the insulation. If there’s moisture in the insulation, the hydrogen nuclei attenuate the energy of the emitted neutrons. The inspection instrument’s gauge detector displays a low-energy neutrons count proportional to the amount of water in the insulation. High counts per time period indicate more moisture and a higher probability of the present of CUI.

Advantages of Neutron BackScatter:

• Relatively quick and accurate method to identify areas for potential CUI
• Access elevated areas without scaffolding Light, versatile to reach congested areas
• Liquid level determination