Moreover, the JCPOA will oblige Iran to reduce its number of centrifuges, which are used in the enrichment process, progressively for the next ten years. Likewise, the heavy-water reactor at Arak will have to be redesigned to produce only radioisotopes for medicinal and industrial purposes, or for research into other peaceful uses of nuclear energy, with the spent fuel it produces shipped out of the country.
此外，JCPOA还要求伊朗在未来十年中逐渐加码减少用于核浓缩的离心机数量。类似地，阿拉克（Arak）的重水反应堆也将被重新设计，只能制造用于医疗和工业目的的放射性同位素或其他核能的和平用途研究，其所产生的乏燃料将被运往国外。