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Enrichment - hdbk1113cn10062
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Radiological Safety Training for Uranium Facilities - index
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DOE-HDBK-1113-98
Module 102 The Nuclear Fuel Cycle
Lesson Plan
Instructor's Notes
Laser Processes
b.
The Atomic Vaporization Laser Isotope
Separation (AVLIS) involves vaporization,
selective ionization of one isotope, and
subsequent electrical separation.
Currently, no DOE production plants exist
which use thi s technology.
Nozzle Separation
c.
The nozzle separation process is based on
the different speeds of  235U and 238U
compounds when t hey are injec ted through
a nozzle into a small chamber.
Centrifugal Separation
d.
Centrifugal separation is based on heavier
compounds migrating to the outside when
spun at a high rate of speed.
The uranium left over from the enrichment process
is mostly 238U, with a reduced amount of 235U
(usually 0.2% by weight). This byproduct is called
"depleted uranium" and has additional uses such as
radiation shielding, armor plating, and ammunition.
During World War II, uranium work was secret and
code names were used for the different forms of
uranium. Natural uranium was named "Tuballoy,"
a name that grew out of a cover story that the Allies
were investigating alloys for high-quality tubing.
26


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