According to Rosatom, one of the main components for the forthcoming 1000 megawatts of atomic power unit in Tamil Nadu’s kudankulam is being prepared in Russia. The upper semi-vessel of the over 1000 nuclear reactor for the fifth unit under construction at kudankulam has started welding brozartom.
Russia’S integrated nuclear power operator supplied all six units using Russian technology and equipment. Crane lifted the 170-tonne upper semi-vessel to the turner and the welding station. Where professionals begin welding, two circumferential welds welding is done for 22 days at a temperature of 150 to 300 degrees; after the operation, the semi-weld vessel’s portions will be heated to 300 degrees.
The semi-vessel is then moved to a heat treatment furnace to get the metal’s requisite mechanical characteristics. The procedure of heating and holding takes three days at a maximum temperature of 620 degrees. After heat treatment, specialists will conduct mandatory examinations on welded joints. After that, the semi-vessel will be prepped for internal corrosion-resistant covering in fused regions.
The reactor is a vertical cylindrical cylinder with an elliptical bottom that houses the core and internals. The reactor’s top is hermetically sealed with drives for mechanisms, controls and reactor protection elements fitted on it, as well as nozzles for outputting cables from reactor control sensors.
There are nozzles for feeding and removing coolant and nozzles for emergency coolant delivery.
When the circuit is depressurized in the upper half of the vessel, the kudankulam nuclear power plant is located in the tiranovali region of Tamil Nadu, some 650 kilometers south of Chennai. India’s atomic power corporation is working on its phase one of the projects, which includes the construction of two 1000-megawatt pressurized water reactor units based on Russian technology. According to the deal between India and Russia in December 2008, an extra four teams will be added. Units 3 and 4 have been under construction since 2016, intending to have them operational by 2023.
The general framework agreement for building the fifth and sixth units was signed in June 2017 by NPCIL and the same group of businesses between 2025 and 2026. The units are planned to be serviced when all six power plant units are operational. It will have a combined capacity of six thousand megawatts.
