The Volgodonsk branch of AEM Technologies Atommash (part of Atomenergomash, the mechanical engineering division of Rosatom) has successfully finished inspection the lower half of the reactor vessel VVER-1200 that will become part of the second power-generating unit of the Belarusian nuclear power plant (BelNPP). The welding seams during inspection have been examined with absolutely positive result.
In order to perform Quality Control the main types of nondestructive testing have been used, including Penetrant, Ultrasound and Radiographic testing. All welding seams have passed the testing from the first attempt.
At the moment the inside surface of the lower half of the reactor vessel of the second power-generating unit of the Belarusian nuclear power plant is covered with corrosion-resistant alloys
The reactor is a vertical cylinder with an elliptical bottom. The reactor core and the internal components will be located inside. The reactor is hermetically sealed by a lid that also bears the actuators and mechanisms meant to regulate the process and protect the reactor. The lid also contains pipe sleeves that will be used to feed cables from internal reactor control sensors. The lid to casing fastening will be carried out with the studs. There are the coolant inlet and outlet in the upper part of the casing as well as emergency coolant inlets in case of cladding leakage.
The Belarusian nuclear power plant is a project to build an AES-2006 type nuclear power plant 18km away from Ostrovets, Grodno Oblast. The reactor facility project has been developed by OKB Gidropress (part of Atomenergomash) which carries out designers supervising and the design support. The first power-generating unit is scheduled for commissioning in 2018, the second one in 2020.