Russia’s Atommash Volgodonsk, a branch of AEM Technologies (part of state nuclear corporation Rosatom’s engineering division) has finished the manufacture of the upper part of the reactor pressure vessel (RPV) for unit 1 of the Rooppur nuclear plant in Bangladesh.
Welding of the parts of the structure took 25 days and it was then heated at 300 degrees Celsius for six days, AEM announced 1 October.
The previous day, general contractor Atomstroyexport (also part of Rosatom) said a key milestone had been reached with the installation of the support truss, which is designed to fix the reactor vessel. “The work involves a complex type of installation, since the tolerances of alignment relative to the reactor shaft are only 2 mm,” said Sergey Lastochkin, vice president and project director of the Rooppur NPP construction programme. “The installation was completed a day ahead of schedule due to the coordinated actions of the engineering division staff and the construction site staff. The construction of the first and second power units is on schedule,” he noted. Concreting work was completed on the foundation slab of the machine room of Rooppur 2 in August.
Rooppur, with two VVER-1200 reactors, is being built by Rosatom, in accordance with the $12.65 billion general contract signed in December 2015. Russia’s Novovoronezh II is the reference plant. Preparatory work was carried out at the construction site in 2015-2016 and working documentation was developed, as well as substantiation materials for construction licences. In November 2017, after the Bangladeshi regulatory authority (BAERA) issued a licence for the design and construction of the station first nuclear concrete was poured for Rooppur 1. It was followed by first concrete for Rooppur 2 in July 2018. Rooppur 1 is scheduled to begin operation in 2023, and Rooppur 2 in 2024.