Paragon has reverse engineered the rod block monitor (RBM) circuit cards and power supplies for a U.S. nuclear power plant.

Our reverse engineered units have the same form, fit, and function as the originals and can be installed in the RBM pages with no modifications.

Design

The reverse engineered units were designed to be drop-in replacements that required no field work at the power plant. The circuit boards and metalwork were all built to the original unit dimensions. Test jack locations were maintained in similar locations as the original so there would be no learning curve for maintenance or operations personnel.

The traces on the circuit boards were routed as close to the original design as possible to reduce and/or eliminate any EMI/RFI risks. Any deviations due to component obsolescence were documented indicating the replacement had retained the same form, fit, and function as the original component. All circuit boards were manufactured to IPC-610, Class 2 Specifications.

Testing

The circuit cards were designed and built as non-safety related per the customer’s request, however, if needed, the designs can be updated and tested for safety-related applications. All units were functionally tested based on the critical design characteristics of that unit, developed from the original design, industry OPEX, and site procedures.