Observers from Earth can see two types of eclipses â eclipses of the Sun (solar eclipses), and eclipses of the Moon (lunar eclipses). These occur when the Sun, Earth and Moon align in a straight or almost straight configuration.
The Tehran Research Reactor (TRR) is a 5 megawatt-thermal (MWth) pool-type light water research reactor. The United States supplied the TRR to Iran in 1967 and weapon-grade uranium fuel for the reactor.The International Atomic Energy Agency (IAEA) inspects this reactor.ithout notifying the IAEA Iran irradiated uranium oxide (UO2) targets in the TRR and separated plutonium in glove boxes at Tehran Nuclear Research Center (TNRC) laboratories. Iran also admitted to producing small amounts of polonium-210 in the TRR in the early 1990s through the irradiation of bismuth targets.
Purpose: The TRR is held to verify readiness for Government testing. Description: The TRR is the Government's decision milestone that determines the completion of ICPI and CFI. The TRR may be conducted on an incremental basis as established in the Trainer TEMP.Typically the first TRR (TRR 1) is held prior to GPI and a second one (TRR 2) is held prior to GFI.Additional TRRs may be held as required. The first TRR occurs after the Contractor has completed HSI and successfully completed the Test Procedures tests.he TRR mission exercises are defined in the Government-accepted TP and other Government-accepted test plans as documented in the Trainer TEMP. The TRR mission exercises are the primary method for determining trainer readiness for the Conformance Inspections after the CPI deficiencies have been resolved.