’
natural backeround and medical procedures ar2 apniied to Neon? and FRC
reco-mendations.
ICRP developed the concept of “acceptable risk."
Unless nan vishes to
dispense with activities involving exposures to fonizing radiation, he
must recomnize that there is a iesree wi cish and suse Linit the raltacion
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dose to a level at «mich the assumed risk is deemed to be acceptable to
activities.
Tor planned or controlled exposures of individuals and populations, the
ICR? has recommended the term "dose limit."
Recommended dose limits are
Shousit to be iwsoeciate! vith a very low decree of risk.
Te
Tor unplannel
exposures from uncontrolled sources the term "action level" is
recommended.
In general it will be appropriate to institute countermeasures
only when their social cost and risk will be less than those resulting
from the exposure.
Setting of action levels is the responsibility of
national authorities.
It is not desirable to exposure members of the public to doses as high as
those considered to be acceptable for radiation workers because children
are involved, members of the public do not make the choice to be exposed,
and members of the public are not subject to selection, supervision and
monitoring, and are exposed to the risks of their oim occupations.
For
planning purposes , dose linits for members of the public are set a factor
of ten below those for radiation workers.
pms
114-05