The Valgodansk branch of JSC EM Technology (Rosatom’s instrument maker-Atomenergomas) has completed the work on the main joint stud of the reactor pressure vessel of the second unit of the Rooppur nuclear power plant.
The boring reactor of the threaded hole serves to seal and protect the main joint of the pressure vessel from the unit cover above, which is crucial for the safe production of the entire nuclear power. Experts made 54 holes of 180 mm diameter accurately in 10 days.
At the end of this work, the experts bring the threaded part to the perfect mirror-like condition. The quality control department inspects the threaded coating and quality work. During the hydraulic test, the two meter studs will be screwed into the threaded hole and the 50 kg nut will be firmly attached. The threads of the main joint completely seal the reactor.
This reactor is a first class device in terms of quality. It is a long cylinder shaped device. Inside the reactor vessel are the core and internal instruments. With the help of the drive mechanism the reactor is completely sealed by the cover. The output wires of the sensors are used to control, protect and monitor the reactor. A complete set of key components, including a reactor and four steam generators, was shipped to Bangladesh in 2020.
Rooppur nuclear power plant is being prepared according to the Russian project. It is being designed and implemented by the engineering department of Rosatom State Corporation. Each of the two units at the center has 1200 VVER reactors with a capacity of 70 years and can be extended for another 20 years.
Source: Bhorer Kagoj by www.bhorerkagoj.com.
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