LPRM Power Range Detectors
GE has more than 45 years of experience designing and manufacturing Reuter Stokes LPRM detectors. GE was the first to introduce miniature in-core fission chambers and the breeder LPRM concept. With more than 5,000 LPRM installations for nearly 75 boiling water reactors (BWRs), we have unsurpassed operating experience in all phases of BWR LPRM technology, including design, manufacture, in-reactor performance and performance surveillance.
Pricing available upon request
Features and Benefits
- Our LPRM system consists of a number of fission chambers, which operate from a range of about one to 125 percent of the rated reactor power on a linear scale.
- The individual LPRM assembly consists of four sensors located at predetermined elevations and a calibration tube for the traversing in-core probe (TIP). The entire assembly is enclosed in a stainless steel cover tube equipped with interface features that mate appropriately with the support plates and grid of the reactor core.
- We offer two types of LPRM assemblies: the NA-250 LPRM for BWR-6s and the NA-300 LPRM for all other BWRs. Both LPRM detector types are fission chambers with a mineral insulated coaxial signal cable. The fission chamber consists of a cathode and anode assembly with high-purity argon gas in the inter-electrode gap.
- The cathode is coated with a mixture of U-234 and U-235 oxides. As neutron interaction depletes the U-235 atoms, U-234 is converted to U-235, so the fission chamber is a miniature "breeder," extending its life and output current.
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