OMZ-Special steels completes production of a shell for nuclear reactor vessel for VVER-TOI project

OMZ-Special Steels has been developing technologies for production of blanks for reactor vessels and other reactor equipment under VVER-TOI project (Atomenergoproekt, a subsidiary of Rosatom, is the General Designer of this project) together with OMZ-Izhora, NPO CNIITMASH, CRISM Drometey.

Six meter long experimental shell was manufactured from a 420-ton ingot at a 12000 ton-force automated forging unit. The shell then underwent initial heat treatment and milling. Main heat treatment and quality assurance procedure completed the production cycle.

Research of technologies involved in production of lengthened vessel shells for nuclear reactors of next generation has great importance not only for OMZ-Special Steels, but also for development nuclear technologies in Russia in general. Usage of lengthened shell in reactor core allows to make this zone seamless, which significantly increases its reliability and safety.