Density Meter LB 444 SECTION 9. RADIATION PROTECTION
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The Radiation Safety Officer must ensure that the provisions of the Radiation
Protection Regulations are observed. In particular, his duties include instructing
the staff on the proper handling of radioactive substances.
Radioactive sources that are no longer in use or have reached the end of
their service life must be returned to the manufacturer.
Generally, every member of staff should endeavor to minimize any radiation ex-
posure - even within the permissible limits - by careful and responsible action
and by observing certain safety standards.
The total sum of the radiation dose absorbed by a body is dependent upon three
factors. On the basis of these factors, certain fundamental radiation protection
rules can be derived:
Distance
This means the distance between the radioactive source
and the human body. The radiation intensity (doserate)
decreases - like light - in proportion to the square of the
distance, i.e., doubling the distance to the source reduces
the doserate to one quarter.
Conclusion:
When handling radioactive substances, maximum distance
to the source should be maintained. This is especially true
for persons that are not directly involved in this work.
Time
The total time a person stays in the vicinity of a radiomet-
ric measuring system and the body is exposed to radia-
tion. The effect is cumulative and increases therefore with
the duration of the radiation exposure.
Conclusion:
Any work in the vicinity of radiometric measuring system
has to be prepared carefully and organized such that it
can be carried out in the shortest time possible. Having
the proper tools handy is of particular importance.
DISTANCE
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#
$
TIME
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