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Of Interest

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Key power supply elements pass tests in Russia

Since the signature of a Procurement Arrangement in 2011 with Russia for switching networks, fast discharge units, DC busbars and instrumentation—all key elements of the ITER power supply and superconducting magnetic protection system—specialists from the Efremov Institute in Saint Petersburg have carried out a broad pre-manufacturing campaign including R&D, prototype and testing. In the latest news, type tests have been successfully performed on another batch of equipment prototypes.

The type tests, carried out over 10 days, demonstrated the full compliance of the prototypes with ITER requirements. One element of the latest test group—the local control cubicle—is expected for delivery before the end of the year. (Click to view larger version...)
The type tests, carried out over 10 days, demonstrated the full compliance of the prototypes with ITER requirements. One element of the latest test group—the local control cubicle—is expected for delivery before the end of the year.
The power supply equipment procurement package signed by Russia comprises a large variety of electrotechnical components—many of them designed specifically for ITER by the Efremov Institute. The R&D, fabrication and test campaign has been one of the most technically challenging, and expensive, of the 25 systems falling within the scope of Russia's responsibility to ITER.

In late March, specialists from the Efremov Institute completed tests on prototypes of the bypass open switch, the counterpulse circuit for the toroidal field fast discharge unit, and the local control cubicle for the main circuit breaker of the switching network unit prototype.

All of the tests were witnessed by a representative of the ITER Organization, technical responsible officer Francesco Milani. "The results demonstrated the high professionalism in the design and fabrication of one of the most sophisticated power supply systems. The majority of the elements belonging to this Procurement Arrangement are one-of-a-kind components; some of them (the fast discharge units for the toroidal field coils) also classify as PIC (protection-important) components and, as such, they are subject to the regulations imposed by the French Safety Authority. I have to underline that the Russian team is facing this challenge in a very competent way."

The tests, which were completed in 10 days, demonstrated the full compliance of the prototypes with ITER requirements. This opens the way to integration tests with other components, final design reviews and manufacturing readiness reviews. One element of the latest test group—the local control cubicle—is expected for delivery before the end of the year.

Manufacturing is already underway for part of the package (busbars, tested in 2014, and switching network resistors, tested in 2015). Equipment deliveries have been underway since 2015. The delivery of all system components under this Procurement Arrangement must be completed by 2023.


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