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Page Title:
Modes of Exposure and Biological Behaviour of Tritium |
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|  DOE-HDBK-1105-2002
Radiological Training for Tritium Facilities
Instructor's Guide
Notes
III.
MODES OF EXPOSURE AND BIOLOGICAL
Show OT 29
BEHAVIOR 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.
N
The tritium beta when it is
Tritium is not a dose concern if it is
stopped (particularly in high
N
located outside the body.
atomic numbered materials,
e.g., lead) will produce a low
Tritium betas will not penetrate a
energy x-ray. This x-ray
N
dosimeter.
cannot penetrate into the body,
because of the low energy of
We are interested only in tritium inside
the x-ray.
N
the body.
There may be rare
circumstances 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
N
absorption
N
injection (cuts/wounds)
N
ingestion
N
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