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|  DOE-HDBK-1105-2002
Radiological Training for Tritium Facilities
Instructor's Guide
Notes
Show OT 11
1.
Substitution
Tritium atoms can easily substitute for
hydrogen atoms. Examples:
a.
elemental hydrogen (tritium gas,
HT, DT, or T2)
Show OT 12
b.
tritiated water (tritium oxide: HTO,
DTO, or T2O)
Show OT 13 - Tritium can
c.
organically bound tritium: These
replace a loosely bounded
compounds may result in more dose
hydrogen atom of an organic
per intake than tritiated water.
molecule.
Show OT 14 - Hydride storage
of elemental tritium is common.
d.
metals and tritium (metal tritides):
Uranium Hydride is most
These compounds may result in more
frequently used for this purpose.
dose per intake than tritiated water.
Tritium is released by heating
Accordingly, additional controls may
the metals to 400 degrees C for 1
be needed, such as special air
atm. dissociation pressure.
monitoring or enhanced personnel
protective equipment.
Refer to RCTP 2001-02 and
Health Physics Journal
September 2001 for more
information.
Instructor should emphasize that
2.
Solubility
the biological exchange of
tritium with hydrogen in the
Exchanges with hydrogen in organic and
body is of concern.
other materials (oils, plastics, etc.)
Show OT 15 - The range of
flammable concentrations of
3.
Flammability
tritium in air is between 4% and
75% by volume in air.
Tritium gas is flammable and can explode
under certain conditions.
10
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