NFC is involved in manufacturing of seamless tubes of different sizes made of alloys of Zirconium, titanium & stainless steel. NFC manufactures Pressure tubes, Calandria tubes and Garter Spring assemblies of zirconium alloys which are the critical core structurals of Pressurised Heavy Water Reactors (PHWRs); Zircaloy-4 Square Channels which are used in Boiling Water Reactor (BWRs) and SS D9 hexcans which are used in Fast Breeder Reactor (FBR).
NFC has successfully developed manufacturing process routes for these critical core structurals and has supplied to all the PHWRs, BWRs and FBR.
NFC also manufactures reactor control assemblies required for PHWRs. These assemblies are designed for reactor power monitoring, control mechanisms and shut down. These are made of zirconium alloys and require high precision, reliable components and high quality tubes before welding. The manufacturing processes use hot extrusion, forging, pilgering, drawing of various sizes of tubes and punching, machining of components.
These assemblies use combination of electron beam welding, TIG welding and resistance welding and have stringent quality specifications for soundness of welds and accurate dimensional control.
For this purpose, advanced welding and machining facilities such as electron beam welding equipment, specialized TIG welding machines, CNC machines, pilger mills, precision roll joint machines, vacuum heat treatment furnaces, special surface finishing and treatment equipments are available in NFC.
In addition, NFC has contributed in various developmental programs of DAE such as Compact High Temperature Reactor, Upgraded APSARA Reactor through advanced machining and welding of exotic materials.