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Inhalation - HDBK110520020033
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Radiological Training for Tritium Facilities - index
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DOE-HDBK-1105-2002
Radiological Training for Tritium Facilities
Instructor's Guide
Notes
3.
Absorption
Show OT 33
Absorption is also a hazard because an
The assumption is that an additional
individual can receive, in certain
50% of the inhalation intake is absorbed
situations, 1/3 of their uptake from
through the skin.
absorption through the skin if not
properly using personal protective
equipment.
Tritium gas: There is negligible
a.
skin absorption for tritium gas.
This is an important fact for maintenance
Tritiated water: Tritiated water
b.
workers to know.
can be absorbed through the skin. It
has been observed that moisture on
hands enhances absorption.
Solvents: Some solvents
c.
(organically bound tritium) can also
Insert site specific information
go through the skin.
concerning gloves.
Tritium will penetrate gloves, therefore
gloves must be changed at a prescribed
routine basis.
D. Biological Behavior of Uptakes of Tritium
Tritiated water in the body acts just like
water.
1.
Distribution
Show OT 34
Tritiated water is rapidly and uniformly
Typical production reactor coolant has
distributed throughout the entire body.
approximately 10 Ci/L of tritium. So
The Committed Effective Dose
100 ml of such coolant has about 1 Ci of
Equivalent (CEDE) from an uptake of
tritium. If approximately 8 ml was
one curie of tritiated water is 63 rem.
ingested a CEDE of 5 rem (the annual
Soluble organically bound tritium
limit) would result.
behaves in the body in a similar
manner.
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.
18


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