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Separating technologies — special process and equipment for separating of<br />
isotopes (e.g. Uranium-235 and Uranium-238) with help of different speed of movement<br />
of gas molecules under centrifugal forces created inside cylinder (rotor) rotating<br />
in axial direction; it is used for producing enriched uranium.<br />
RAW — abbreviated from radioactive waste.<br />
Expansion of nuclear fuel production — reproduction of nuclear fuel with<br />
conversion coefficient more than 1, that is when there is more fissible material that is<br />
used in the reactor.<br />
Powerful channel-type reactor (PCTR) — type of single-circuit energy reactor<br />
whose coolant is water and replacer is graphite.<br />
out.<br />
FNR — reactor on fast neutrons.<br />
Breeder — fast reactor where expanded reproducing of nuclear fuel is carried<br />
Reactor plant — complex of systems and elements of nuclear station designed<br />
for transformation of nuclear energy into heat energy; consisting of the reactor and<br />
connected with its systems necessary for its normal operation, emergency cooling,<br />
emergency protection and keeping in safe condition by means of carrying out main<br />
and auxiliary functions by other systems of nuclear station. Boundaries of the reactor<br />
plant are set in for each reactor plant in the project.<br />
Fission reaction — view Nuclear fission.<br />
Regenerated uranium — uranium extracted from worked-out nuclear fuel during<br />
radiochemical processing for reuse in nuclear fuel (regenerated fuel).<br />
Regulation of nuclear reactor — function of control and protection system of<br />
nuclear reactor providing supporting or changing of speed of chain nuclear reaction.<br />
Control rods — movable element of CPS made of material absorbing neutrons<br />
influencing on reactivity and used for regulating nuclear reactor (view also Absorbing<br />
rods).<br />
Control authority — national authority or system of authorities appointed by<br />
the government and having legal rights of control over security of nuclear plants, carry<br />
out the process of licensing and in this way regulate security at choosing the construction<br />
site, projecting, construction, putting into operation and operation and supervise<br />
solving problems related to these items.<br />
Reserving — using more than minimally required amount of energy, number of<br />
elements and systems in such way that failure of one element or system doesn’t lead<br />
to the failure of the whole function.
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