The tests on the 330-tonne RPV were carried out with a maximum pressure of 24.5 megapascals (MPa), which is about 1.4 times higher than operating pressure.
In a nuclear power plant, the RPV is the pressure vessel containing the nuclear reactor coolant, core shroud, and the reactor core.
Atomenergomash is supplying all equipment for the reactor installation and most components for the machine room of the Rooppur nuclear station.
There are two Russia-supplied 1,200-MW V-392M pressurised water reactor units under construction at the Rooppur site, about 150 km from the capital Dhaka.
First concrete for Rooppur-1 was poured in November 2017 and for Rooppur-2 in July 2018. A general contract was signed between Russia and Bangladesh in 2015.