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Absorption - HDBK110520020113
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Radiological Training for Tritium Facilities - index
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Engineered Controls - HDBK110520020115


DOE-HDBK-1105-2002
Radiological Training for Tritium Facilities
Student's Guide
Notes
2.
Biological Half-life
Half of the HTO is eliminated from
the body in about 10 days.
Through normal biological
processes, it would take 70 days or
more to eliminate 99% of the
assimilated tritiated water.
Stable tritium particulate aerosols
and insoluble organically bound
tritium behave in the body in a
similar manner as the particulate to
which the tritium is bound and
would have a longer half life.
E.
Medical Treatment
The biological half-life can be shortened by
increasing the water elimination in the body.
Therefore, individuals who have uptakes of tritium
are encouraged to drink water. Drinking copious
amounts of water should not be done without a
physician's guidance. Certain medical conditions
may be affected by liquid intake.
IV.
RADIOLOGICAL CONTROLS FOR TRITIUM - How
can I protect myself from exposures to tritium?
Tritium can be present in a variety of chemical forms.
Ongoing research indicates that the form of tritium which
gives the highest dose (per unit intake) is tritium particulate
aerosols. However, these compounds are not found in the
quantities and various locations as tritiated water. If we can
rule out special tritium compounds as being of concern, we
assume it may be tritiated water.
The preferred hierarchy of control is as follows:
engineered
N
administrative
N
personal protective equipment
N
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