Nuclear suppliers

Kavach fabricates Class 1 and Class 2 pressure equipment for reactor islands — steam generators, pressurisers and primary piping spools — from a single 46,000 m² works outside Pune. The shop holds an N-stamp, runs its own qualified welding school, and has supplied the PHWR fleet continuously since the late nineties.

Canned-motor and vertical pumps for primary coolant and auxiliary circuits, with a full-flow test loop that qualifies every unit before shipment. The service arm refurbishes competitor units under its own quality programme.

Arcturus designs and manufactures safety and relief valves for primary and secondary circuits, with a qualification laboratory that runs its own seismic and environmental testing. The company supplies the Indian fleet and holds framework agreements with two European operators.

A French forge supplying ring forgings, tube sheets and nozzle bodies for primary circuits, with an in-house metallurgy laboratory and traceability back to melt. Rhône has delivered into EPR and VVER programmes and is qualifying for Indian PHWR supply.

Vidyut supplies Class 1E switchgear, containment electrical penetrations and emergency diesel switchboards, with environmental qualification carried out at its Hyderabad laboratory. The cable division holds separate qualification for radiation-resistant insulation.

An independent inspection house running phased-array ultrasonics, radiography and eddy-current examination for reactor components, both in the shop and on outage. Indus holds NABL accreditation across eleven methods and fields 140 Level II and Level III examiners.

Northgate plans and executes station outages, fielding its own remote-handling tooling for high-dose work in the reactor vault. The company runs a mock-up hall where every intervention is rehearsed before it goes to site.

A consultancy writing safety cases and licensing submissions, and acting as owner's engineer on new-build and life-extension programmes. Meridian's practice spans deterministic and probabilistic analysis, with its own PSA modelling team.

Helion builds Class 1E instrumentation and the safety-system platforms behind it: reactor protection logic, post-accident monitoring and area radiation monitoring networks. Its software is developed to IEC 61513 with an independent verification and validation team.

Sagara designs and fabricates shielded transport and storage containers for spent fuel and sealed sources, including the neutron-absorbing liners and the impact limiters. Licensing dossiers are prepared in-house.

Zirconium alloy cladding tubes, spacer grids and end plugs, drawn and assembled under a dedicated contamination-control regime. Quantum is the newest entrant in the directory and is still completing its profile.