Radiological Training for Tritium Facilities
Show OT 32
a. Tritium gas: is only slightly
An extremely low
incorporated into the body when inhaled.
percent (in the order
Most tritium gas inhaled is subsequently
of 0.005%) of
exhaled. There are other chemical and physical
tritium gas inhaled is
processes to convert tritium gas to tritiated
tritiated water prior
to being exhaled.
b. Tritiated water vapor: Nearly
100% of tritiated water vapor inhaled is
incorporated into body fluids/tissues.
vapor is more
c. Hazard: Exposure to tritiated
hazardous due to its
water is approximately 25,000 times more
ability to be almost
hazardous than exposure to elemental tritium
increasing the dose
received by the
d. Special Tritium Compounds:
consist of organically bound tritium and
tritium particulate aerosols.
Refer to RCTP
Exposure to organically bound tritium can be
2001-02 and Health
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.
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.