Fuel Fabrication Laboratory
In 1981 and 1984, respectively, Iran commissioned with a foreign supplier the construction at ENTC of a Uranium Chemistry Laboratory (UCL) and a Fuel Fabrication Laboratory (FFL, and also referred to as Fuel Element Cladding Plant and Fuel Casting Plant). The existence of these laboratories was formally reported to the IAEA in 1998. Between 1981 and 1993, Iran carried out at the UCL and FFL unreported activities involving the exempted depleted U3O8, the depleted UO2 that had been exempted from IAEA safeguard requirements, and the U3O8 concentrate. These activities were only reported to the IAEA in 1998 after lengthy discussions with Iranian officials. The material was de-exempted in 1998, and what remained of it was stored at ENTC. In 1998, Iran declared that the UCL had been closed down since 1987, but FFL was still in operation.
Between 1985 and 1993, the FFL was used for research in fuel fabrication, the main activity having been the manufacture of sintered pellets using the imported 50 kg of exempted depleted UO2. When Iran reported the existence of FFL, and the processing of the nuclear material there, in 1998, it declared that 13.1 kg of the material had been lost during processing.
On 1 November 2003, Iran agreed, as a corrective measure, to submit inventory change reports (ICR) for UCL, FFL, JHL and the waste storage facility at Karaj, as well as design information for the waste storage facility.
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