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Uses of Tritium - doe-hdbk-1105-2002_reaffirm20070031
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Radiological Training for Tritium Facilities - index
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Modes of Exposure and Biological Behavior of Tritium cont'd


DOE-HDBK-1105-2002
Radiological Training for Tritium Facilities
Instructor's Guide
Notes
III.
MODES OF EXPOSURE AND BIOLOGICAL BEHAVIOR
Show OT 29
OF TRITIUM - How can I be exposed to tritium and what
would it do to me?
A. External Dose
Show OT 30
Tritium is not an external hazard.
-
The tritium beta when it is
stopped (particularly in high
Tritium is not a dose concern if it is
-
atomic numbered materials, e.g.,
located outside the body.
lead) will produce a low energy
x-ray. This x-ray cannot
Tritium betas will not penetrate a
-
penetrate into the body, because
dosimeter.
of the low energy of the x-ray.
We are interested only in tritium inside
-
There may be rare circumstances
the body.
where external dose should be
considered (i.e., using large
quantities of tritium).
B.
Internal Dose
Tritium is an "internal" radiation hazard.
C.
Modes of Exposure
Show OT 31
Tritium can deliver a radiation dose if it gets
inside our bodies. Modes of entry include:
-  inhalation
-  absorption
-  injection (cuts/wounds)
-  ingestion
16


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