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Modes of Exposure and Biological Behaviour of Tritium - doe-hdbk-1105-2002_reaffirm20070111
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Radiological Training for Tritium Facilities - index
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Absorption - doe-hdbk-1105-2002_reaffirm20070113


DOE-HDBK-1105-2002
Radiological Training for Tritium Facilities
Student's Guide
Notes
1.
Inhalation
a.  Tritium gas: is only slightly
incorporated into the body when inhaled. Most
tritium gas inhaled is subsequently exhaled.
There are other chemical and physical processes
to convert tritium gas to tritiated water.
b.  Tritiated water vapor: Nearly 100%
of tritiated water vapor inhaled is incorporated
into body fluids/tissues.
c.  Hazard: Exposure to tritiated water
is approximately 25,000 times more hazardous
than exposure to elemental tritium gas.
d.  Special Tritium Compounds: consist
of organically bound tritium and tritium
particulate aerosols.
Exposure to organically bound tritium can be up
to approximately 13 times more hazardous than
exposure to HTO.
Exposure to tritium particulate aerosols can
deliver up to approximately 20 times more dose to
the whole body than exposure to HTO. The dose
to the lungs from tritium particulate aerosols
could be 2 orders of magnitude higher than from
HTO.
2.
Ingestion
Ingestion may occur by eating, drinking, chewing
tobacco, and applying makeup where tritium
contamination is present. Always wash hands
thoroughly when leaving areas where there is a
potential for contamination, and never eat, drink
etc. where tritium contamination may be present.
12


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