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Chernobyl at 40 years: Looking back at Nuclear News
Sunday, April 26, at 1:23 a.m. local time will mark 40 years since the most severe nuclear accident in history: the meltdown of Unit 4 at the Chernobyl nuclear power plant in Ukraine, then part of the Soviet Union.
In the ensuing four decades, countless books, documentaries, articles, and conference sessions have examined Chernobyl’s history and impact from various angles. There is a similar abundance of outlooks in the archives of Nuclear News, where hundreds of scientists, advocates, critics, and politicians have shared their thoughts on Chernobyl over the years. Today, we will take a look at some highlights from the pages of NN to see how the story of Chernobyl evolved over the decades.
Didier Perrault
Fusion Science and Technology | Volume 75 | Number 5 | July 2019 | Pages 339-344
Technical Paper | doi.org/10.1080/15361055.2019.1594538
Articles are hosted by Taylor and Francis Online.
The decree authorizing the creation of the ITER facility was published on November 9, 2012, with the provisions adopted having been considered mostly acceptable. However, it is the first fusion facility of this kind to require a creation decree and the design of some of the systems had not yet been finalized. Moreover, while some equipment, with their associated safety requirements, are indeed classic and well known, others are uncommon and their safety requirements, although considered acceptable, are requesting justification.
Therefore, the decree was supported by about 200 requests, which have to be met during the facility startup schedule. This paper takes stock of the current situation and presents the current status of the main expected answers, taking into account the design evolution which has been further proposed by the operator (e.g., the new vacuum vessel pressure suppression system, etc.).
Some safety issues have already been considered as solved (the tokamak support design, accident within the neutral beam cell, etc.). Others are estimated not to be completely satisfactory (e.g., explosion within the vacuum vessel). Before moving on to commissioning, a few issues are still pending (detritiation system efficiency, radiation protection, etc.) and additional studies regarding the final design are expected (hot cells, tritium and waste buildings, etc.).