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External Dose Reduction and Control Techniques - doe-hdbk-1113-98_reaffirm_2005_040136
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Radiological Safety Trainign for Uranium Facilities
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Module 104 Internal Dose Control


DOE-HDBK-1113-98
Radiological Safety Training for Uranium Facilities
Module 103 External Dose Control
2. General External Dose Control Practices
These general principles should be applied to control external dose from
uranium:
minimizing time in the radiation field,
maximizing the distance from the radiation source,
using shielding to reduce the radiation field, and
reducing the amount of radioactive material being used.
3.
Specific Beta Dose Control Principles
Surfaces emitting beta radiation are easily shielded with plastic or other light
element materials. Use of denser materials for shielding of high-energy beta
radiation may produce bremsstrahlung X-rays and should be avoided.
Beta dose to the lens of the eye can be reduced by using safety glasses. Safety
glasses are commonly worn for industrial safety concerns in areas where uranium is
handled. Heavy rubber or leather gloves are effective in reducing the skin dose to
the hand, but their use must be balanced against other safety concerns, such as
hazards from machinery or loss of manual dexterity.
Industrial safety concerns in a uranium facility may be more hazardous to personnel
than exposure to radiation. Professional radiological control personnel evaluate the
process in the workplace to ensure workers receive the maximum overall protection
from all hazards, not only radiological hazards. This is generally done in
cooperation with industrial safety and industrial hygiene personnel.
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