The
Tuwaitha Nuclear Research Center was the main nuclear site in Iraq that was involved with handling nuclear material. It was started in 1967 when three main nuclear facilities and waste location were put in operation. These were the IRT 2000 research reactor, the
radioisotope production building and the dumping station (waste store). Many other nuclear facilities were subsequently constructed at this site, and the IRT 2000 reactor was also upgraded to IRT 5000. Until 1991, the facility was a nuclear research facility supposedly under the direction of
Khidir Hamza. The facility is surrounded by a sand
berm four miles (6.4 km) around and 160 feet (50 m) high, and contained the French-built research reactor
Osirak, destroyed by Israel in 1981. Israel contended that there was a secret underground compartment for the production of
plutonium. Plutonium is produced in breeder reactors by surrounding a
neutron source, such as a nuclear reactor, with a 'blanket' of
U-238. The neutrons released by nuclear fission are donated, producing
Pu-239 and is the cheapest and easiest way to achieve large-scale production of plutonium. The director of the
IAEA, which conducted regular inspections of the complex, argued that a secret vault 40 meters below the reactor core would not be very effective, to which Israel responded by correcting their original statement to 4 meters. The IAEA was aware of such a vault but the reactor floor was shielded and the vault contained the mechanisms for raising the control rods which require access for maintenance. According to the Director of the IAEA, the shielding would block the neutrons needed to turn U-238 into Pu-239 and the reactor would not be able to operate if the vault was blocked by being filled with
uranium. As the sole reactor site in Iraq, the reactors relied on fuel imported from France and was unable to produce significant quantities of enriched uranium. In 1991, If Iraq had converted their entire stockpile of nuclear fuel rods, assuming they were able to perform the extremely difficult task of separation from highly
irradiated fuel which contained 69 elements, they would only have 41 kg of
U-235, less than the 64 kg used in
Little Boy. 52 kg of 93% enriched uranium is the minimum critical mass required to create a uranium bomb. They did not have the technical capabilities or resources to produce an implosion type device that uses less U-235 but requires complex lenses and initiators. ==Research achievements==