A typical nuclear only survey requires testing the roof surface at pre-determined grid intersections with 5×5 to 10×10 foot grid centerlines.
The 3216 operates on the principle of neutron moderation where fast neutrons admitted by a radioactive source are slowed by hydrogen in the roof assembly. Slowed neutrons are detected and counts displayed are proportional to moisture (hydrogen) content in both analog (real time) and digital formats.
*Gauge ownership and operation requires local certification and licensing by the respective state or U.S. Nuclear Regulatory Commission as well as certification for Hazardous Materials handling and transport. Each state radiation protection department has an annual fee structure for the utilization of the nuclear gauge within that state.
** Intrusive validation testing is performed by Armco exclusively on non-warranty roofs and with the permission of the client/roof owner and the utilization of roof manufacturer approved temporary repair methods. For intrusive validation testing on in-warranty roof systems we must be accompanied by the responsible roof contractor who will perform the subsequent test site repairs.
— R.W. – Senior Regional Field Operations Manager – National Roofing Products Manufacturer and Contractor – Read More Client Comments