Newton Labs QUAD400UW
Detecting Twisted and Bowed PWR and BWR Fuel Assemblies
The QUAD400UW was developed to detect bowing in BWR fuel bundles and twisting in PWR fuel assemblies as well as other defects in fuel bundles. It is described in the EPRI report number 1025177, which EPRI members can download from the EPRI website. The QUAD400UW incorporates 4 of Newton Labs' Underwater Nuclear Laser Scanners, fully radiation protected, and allows for movement of the fuel bundle during scanning so that precise fuel bundle location is not required while inspecting the fuel bundles.
The QUAD400UW can inspect bundles for bowing and twisting with scan times as short as 30 seconds as well as provide full detail of the bundles with slower and higher resolution scans. It features a u-shaped inspection area so that fuel bundles can be simply hung from the crane and swung into position. The QUAD400UW moves on a rail on the side of the spent fuel pool. In some spent fuel pools it can utilize the current Fuel Prep Machine Rail already installed in many spent fuel pools.
The QUAD400UW also provides high resolution human viewable pictures that stored along with the generated CAD models. All data is available within milliseconds and are fully stored for later analysis.
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