Project News Details

L&T Builds India’s First 700mwe PHWR Nuclear Steam Generator

L&T Heavy Engineering has successfully flagged off India’s first Nuclear 700 MWe Steam Generator for Kakrapar nuclear power plant in Gujarat. The indigenously-designed Pressurised Heavy Water Reactor (PHWR) is for the Unit 3 Kakrapar power station of Nuclear Power Corporation of India Limited (NPCIL). The first steam generator reached Kakrapar nuclear power plant on June 16,2015. The second steam generator is scheduled to be dispatched on July 4, 2015. A nuclear steam generator is one of the most critical safety Class 1 equipment in a nuclear island. It enables heat transfer from primary side heavy water to generate steam, which drives turbines to generate electricity. Each steam generator weighs about 215MT and is made of special low alloy quenched & tempered steel with nickel-iron-chromium alloy tubes andstainless steel internals. “The completion of first 700 MWe PHWR Steam Generator is a major milestone towards ‘Make in India’ vision,” said Mr. M.V. Kotwal, President (Heavy Engineering) & Member of the Board,Larsen & Toubro. “Success was achieved through relentless dedicated joint effortsby L&T & NPCIL engineers.” The 3D multi-phase thermal hydraulic analysisandsafety analysisincluding accidental conditionswere designed in-houseby L&T. Thenickel-iron-chromiumalloyU-Tubes were manufactured as a joint effort with Nuclear Fuel Complex (NFC), Hyderabad. The scope ofwork included indigenous development of critical internals including stainless steel grid support flats, mist extractors andspecialadhesives &fasteners. L&T Special Steel and Heavy Forgings (LTSSHF),a 65000 sq.meter integrated facility at Hazira,meetsthe heavy forging requirements of criticalsectors. It will supply forgings for future nuclear power plant projects. LTSSHF is a joint venture between L&T and NPCIL.

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