Routine non-destructive assay measurements and safeguards inspection of reactor pond fuel assemblies, can be carried out safely and efficiently underwater with ANTECH B2102 Series Fork Detectors.
Fork Detectors are used to measure neutron and gamma radiation activity from spent fuel assemblies. They are supplied in three different configurations:
The difference between the different types of unit is the inner distance between the tines of the detector head; the VVER option has the largest detector head and the BWR has the smallest. All other components are identical. The detectors are designed to be portable and easy to assemble to facilitate transportation between sites and quick set-up.
B2102 Series Fork Detectors are manufactured to meet the IAEA’s requirements. Each unit consists of a detector head with integral electronics, a set of connection pipes with associated interconnect clamps, O-ring seals, interconnect cables and a mechanism for attaching the detector assembly to the pond gantry side rails. There are three output signals: two from the neutron detectors which are combined as a single output from the two fission chambers in each tine of the detector head, and one from the two ion chambers which is combined as a single output. These three output signals are fed into the counting electronics, such as a MiniGrand or MicroMesskanal.
Each detector can be supplied tested with nuclear sources (optional) and are delivered with full documentation and test records including a leak test report, Certificate of Conformance and manufacturers test records for preamplifier and detectors.