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Fusion Science and Technology
Latest News
Framatome signs contracts with Sizewell C
French nuclear developer Framatome is slated to deliver key equipment for Sizewell C Ltd.’s two large reactors planned for the United Kingdom’s Suffolk coast.
The agreement, reportedly worth multiple billions of euros, was announced this week and will involve Framatome from the design phase until commissioning. The company also agreed to a long-term fuel supply deal. Framatome is 80.5 percent owned by France’s EDF and 19.5 percent owned by Mitsubishi Heavy Industries.
S. Bhandarkar, S. A. Letts, S. Buckley, C. Alford, E. Lindsey, J. Hughes, K. P. Youngblood, K. Moreno, H. Xu, H. Huang, A. Nikroo
Fusion Science and Technology | Volume 51 | Number 4 | May 2007 | Pages 564-571
Technical Paper | doi.org/10.13182/FST07-A1445
Articles are hosted by Taylor and Francis Online.
The choice of the mandrel material has a significant bearing on the properties of the sputter-coated beryllium shell needed for NIF targets. Here, we present our work on screening four mandrel materials, their impact on the Be shell and issues related to their subsequent removal. Beryllium shells sputter deposited on hollow glow discharge polymer or GDP spheres met most of the target specifications. However, they had greater opacity due to partial oxidation of the Be during the GDP burnout step. Poly (-methyl styrene), silicon and nickel beads were explored as alternative mandrels but were plagued with problems such as cracking of the Be shell or incomplete removal. The most promising approach was a two-step coating process mediated by a thin 6m Be mandrel that is made using GDP.