A reactor vessel inspection technology at Kalinin NPP

17 April 2020

The reactor vessel metal and the in-vessel devices have been inspected at the Kalinin NPP 1st power block using a modular delivery manipulator and television guidance system. 

This device enables all types of non-destructive testing automatically without using a polar crane and a reloader, caters for vertical and horizontal camera movement and 360-degree rotation.

The vessel reactor and welded seams inspections are designed to detect the parameters of the base metal that is exposed to high temperature, pressure and ionizing radiation for a prolonged period of time. Additionally, this is the only piece of equipment at a nuclear power plant that doesn’t have to be replaced.

It is important to note that the Kalinin NPP 1st power block was stopped in November 2019 to conduct full-scale maintenance and upgrade as a part of the industrial program on extending the power block’s life span. As of now, the Rostekhnadzor license lets it run on an extended timeline until 2025. Following the completion of all operations, its life span may be extended until 2044.