Hack-Hook
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why you have to fight a loosing battleFuel for reactors are at around 2-3%, and enrichment to 20% is a clear indication of a weapons program.
at least go and look up Tehran research reactor, instead of posting that funny comment that reactor using only 2-3% uranium , they can use even 90% enriched uranium
The Tehran Research Reactor (TRR) (35°44′18″N 51°23′17″E) was supplied by the United States under the Atoms for Peace program. The 5-megawatt pool-type nuclear research reactor became operational in 1967 and initially used highly enriched uranium fuel.[64][65] Light water is used as moderator, coolant and shielding. The TRR core lattice is a 9×6 array containing Standard Fuel Elements (SFEs), Control Fuel Elements (CFEs), irradiation boxes (as vertical tubes provided within the core lattice configuration for long term irradiation of samples and radioisotope production) and graphite boxes (as reflectors).[66]
After the Iranian Revolution the United States cut off the supply of highly enriched uranium (HEU) fuel for the TRR, which forced the reactor to be shut down for a number of years.[67][68] Due to the nuclear proliferation concerns caused by the use of HEUs and following Reduced Enrichment Research and Test Reactor (RERTR) Programs, Iran signed agreements with Argentina's National Atomic Energy Commission to convert the TRR from highly enriched uranium fuel to low-enriched uranium, and to supply the low-enriched uranium to Iran in 1987–88. TRR core was converted to use Low Enriched Uranium (LEU) fuels in 1993.[69] Fuel elements of TRR are now plate-type U3O8-Al with approximately 20% enrichment.[70] In February 2012, Iran loaded the first domestically produced fuel element into the Tehran Research Reactor.[71]
Standard fuel elements of TRR have 19 fuel plates, while CFEs have only 14 fuel plates to accommodate the fork-type control rods. Control of the reactor is accomplished by the insertion or removal of safety and regulating absorber plates, which contain Ag–In–Cd alloy and stainless steel, respectively.[66] Additional control is provided by the inherent negative temperature coefficient of reactivity of the system.
The reactor core is immersed in either section of a two-section, concrete pool filled with water. One of the sections of the pool contains an experimental stall into which beam tubes and other experimental facilities converge. The other section is an open area for bulk irradiation studies. The reactor can be operated in either section.[72]
The reactor experimental facilities in the stall end are as follow:[72][73]
1. Two pneumatic rabbit tubes (for short term irradiation of samples)
2. One graphite thermal column
3. One 12"×12" beam tube
4. Four 6" diameter beam tubes
5. One 8" diameter beam tube
6. One 6" diameter through tube
TRR core cooling is accomplished by gravity flow of pool water at nominal rate of 500 m3/hr through the reactor core, grid plate, plenum and into the hold-up tank from where it is pumped through the shell of the heat exchanger and then back into the pool.[74]
TRR offers a variety of education and exposure services and production of radioisotopes for medical, scientific and industrial centers. One of the primary objectives of the facility is to render services to scientists, engineers and graduate students in nuclear techniques. Tehran research reactor can be utilized for laboratory work involving studies of the reactor core and experiments on neutron diffusion, neutron diffraction, shielding, gamma spectroscopy, boron neutron capture therapy, neutron radiography and Neutron Activation Analysis.
