In the 1st phase of the dismantling (in-situ), the reactor pressure vessel was thermally cut into rings with a height between 0.9 and 1.8 m, the so-called barrel shells.
Each of these vessel sections weighs 12 to 24 tonnes.
In this way, the entire reactor pressure vessel was pre-cut step by step from top to bottom into 13 rings plus the lower part of the reactor.
The pre-cut rings were moved to post-segmentation zone and then cut into manageable pieces, which were then packed in special containers.
A total of 430 tonnes were dismantled.
The entire consortium project is scheduled to be completed in Oskarshamn in 2024.
NUKEM Managing Director Sergey Molodtsov said:
- This is an important milestone for the project and our company, proving the efficiency of thermal cutting technology for dismantling reactor pressure vessels
- I am confident that with the proven technology, a strong project team and using all the lessons learned from the Barsebäck plant, we will dismantle the next three reactor pressure vessels in the contracted time with high quality and safety standards
- I congratulate the team and all the stakeholders involved in this project on this success
- The dismantling of the reactor pressure vessel in Sweden is the first reference of Rosatom for commercial BWR reactors
- We look forward to reaching the next milestones in this important project
Since 2021, NUKEM Technologies is part of Fuel Company TVEL.