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Page Title:
External and Internal Radiation Dose Reduction |
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|  DOE-HDBK-1130-98
Module 4: ALARA Program
Instructor's Notes
C. External and Internal Radiation Dose Reduction
Engineering controls should be the primary method to
control exposure (e.g., enclosed hoods). Administrative
controls is the next method to control exposures (e.g.,
postings). Personnel protective equipment is the last
method (e.g., respirators).
1.
Basic protective measures used to minimize external
dose include:
Minimizing time in radiation areas
Maximizing the distance from a source of
radiation
Using shielding whenever possible
Reducing the amount of radioactive material
(source reduction)
a.
Methods for minimizing time
EO4 Identify methods for
reducing external and
Reducing the time spent in a field of radiation will
internal radiation dose.
lower the dose received by the workers.
1)
Plan and discuss the task thoroughly prior to
entering the area. Use only the number of
workers actually required to do the job.
2)
Have all necessary tools present before
entering the area.
3)
Use mock-ups and practice runs that
duplicate work conditions.
4)
Take the most direct route to the job site if
possible and practical.
5)
Never loiter in an area controlled for
radiological purposes.
6)
Work efficiently and swiftly.
7)
Do the job right the first time.
8)
Perform as much work outside the area as
possible. When practical, remove parts or
components to areas with lower dose rates to
perform work.
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