ANTECH B2104 Series Fork Detectors are routinely used as inspection tools, for safeguards purposes, and to conduct non-destructive measurements to determine the radiation from reactor pond fuel rod assemblies while stored underwater. Fork Detectors are used to measure neutron and gamma radiation activity from spent fuel assemblies. They are supplied in: BWR used to measure Boiling Water Reactor fuel rods, PWR used to measure Pressurised Water Reactor fuel rods, VVER used to measure VVWR fuel rods (currently used in Russia and the Ukraine).