Rotating Plugs of PFBR for BHAVINI
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Rotating Plugs of PFBR for BHAVINI

  • Used for aligning fueling arm with fuel channels in Fast Breeder reactor
  • Material: A48 P2 plates, forgings
  • Size: 7 meter diameter 2.5 meter height
  • Weight: 120 tons
  • Critical Requirement: Position accuracy within 0.5 mm
group_work Challenges
    • Procurement of A48 P2 plates, rings and forgings to required dimensions
    • Large precision fabrication of 7 meter diameter shells, ovality control within 3mm, gap between two shells within 20 mm
    • VTL machining with temperature correction, flatness 150 microns Thermocouples installation with He-leak test & RT
    • Thermocouples installation with He-leak test & RT
    • Development of custom built Gear boxes designed for seismic conditions
    • Manufacturing of Turntable Slewing bearings, 7 meter and 4.7 meter diameter as per IGCAR design
    • Teflon coating proving and application on rings prior to finish machining
    • Assembly and functional testing to prove position accuracy
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