Quantcast Module 104 - Internal Dose Control - doe-hdbk-1113-98_reaffirm_2005_040075

 

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Specific Beta Dose Control Principles - doe-hdbk-1113-98_reaffirm_2005_040074
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Radiological Safety Trainign for Uranium Facilities
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Internal Dose Measurements - doe-hdbk-1113-98_reaffirm_2005_040076


DOE-HDBK-1113-98
Module 104 Internal Dose Control
Lesson Plan
Instructor's Notes
Show OT-31
IV.
MODULE 104 - Internal Dose Control
Highlight the specific
A.
Objectives
internal exposure hazards
and controls at your
EO6
Identify the modes of entry into the body for
facility.
uranium.
EO7
Describe the measures taken to control intakes
of uranium, including special radiological
surveys and techniques, instruments, and release
of materials.
Show OT-32
B.
Internal Exposure to Uranium
As discussed in Module 101, the primary biological
hazard is the potential for uranium to be taken into the
body. This exposure may result in heavy metal
poisoning, including kidney damage (for acute
exposures), or an increased cancer risk (for chronic
exposures). Uranium may enter the body through
inhalation, ingestion, absorption through the skin, or
injection into the bloodstream, such as from
contamination of an open wound.
The most common route of entry is inhalation, but much
of the material inhaled does not stay in the lungs. The
lungs and related air passages constantly work to
remove all the dust we breathe, including dust that
contains uranium. The dust expelled from the lungs but
not exhaled is swallowed, so some of the inhaled
uranium ends up in the digestive tract.
39


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