According to a document from the International Atomic Energy Agency (IAEA), Iran is moving advanced centrifuges from a pilot facility to Hall B of the Natanz uranium enrichment complex. Iran had installed piping needed to accommodate these new centrifuges; three cascades of 164-machines each will be installed, according to the IAEA document. The move violates Iran's obligations under the Joint Comprehensive Plan of Action (JCPOA). Iran pledged to cooperate with the IAEA inspection but asked the Agency to describe the scope of its inquiry.