1. This report of the Director General to the Board of Governors and, in parallel, to the United Nations Security Council (Security Council), is on the Islamic Republic of Iran’s (Iran’s) implementation of its nuclear-related commitments under the Joint Comprehensive Plan of Action (JCPOA) in relation to its enrichment-related activities. It provides an update on developments since the Director General’s previous report.

A. Activities Related to Enrichment

A.1. Fuel Enrichment Plant

2. As previously reported, Iran has informed the Agency that at the Fuel Enrichment Plant (FEP) at Natanz, in addition to the 30 IR-1 cascades provided for under the JCPOA, it intends to: install another 30 cascades – six of IR-1 centrifuges, fifteen of IR-2m centrifuges, six of IR-4 centrifuges, and three of IR-6 centrifuges; install “infrastructure” for up to 18 additional cascades at FEP,4 without specifying the types of centrifuge to be installed; and increase the number of IR-1 centrifuges installed in some of the 30 IR-1 cascades that had remained in the same configuration since JCPOA Implementation Day. All of these cascades are either already installed, or will be installed, in four of the eight enrichment units that comprise Building A1000 at FEP.

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