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
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