Prototype Fast Breeder Reactor Steam Generator Inspection System for Tube Inspections

Prototype Fast Breeder Reactor (PFBR) has eight Steam Generators (SGs), four in each secondary loop for exchanging the heat from the secondary sodium to water/steam. Sodium is present in the shell side and water/steam in the tube side. Internationally, it is seen that SGs are the key factors for the plant availability and hence, SG tube integrity is of prime importance. Significant progress has been made around the world both on the Remote Field Eddy Current (REEC) testing and the remote automation of the tube inspection. An indigenously designed and built device called PFBR SG Inspection System (PSGIS), which is first of its kind in the world for FBR SGs is designed and tested on different mock-up test setups and qualified for the use in actual PFBR SG. The device has been used to inspect all the SG installed at PFBR site. This paper brings out the details of the remote tooling designed and used for the inspection of PFBR SG tube.