3 Product description
Handling permit
General instructions for
radiation protection
12
Air cooling
For ambient temperatures up to +80 °C you can use an air cooling.
The cooling air is generated with vortex coolers. Please check if suf-
ficient compressed air is available. You can find further information
in the supplementary instructions of the air cooling. The air cooling
cannot be retrofitted.
Water cooling
For ambient temperatures up to +100 °C you can use a water cool-
ing. Please check if sufficient cooled water is available. You can find
further information in the supplementary instructions of the water
cooling. The water cooling cannot be retrofitted.
3.6
Corresponding source container
A radioactive isotope in a suitable source holder is the prerequisite for
a radiometric measurement setup.
The handling of radioactive substances is regulated by law. The radia-
tion protection rules of the country in which the system is operated
apply first and foremost.
In Germany, for example, the current radiation protection ordinance
(StrlSchV) based on the Atomic Energy Law (AtG) applies.
The following points are important for measurement with radiometric
methods:
A handling permit is required for operation of a system using gamma
rays. This permit is issued by the respective government office or the
responsible authority (in Germany, for example, offices for environ-
mental protection, trade supervisory boards, etc.)
You can find further instructions in the operating instructions manual
of the source container.
When handling radioactive sources, unnecessary radiation exposure
must be avoided. An unavoidable radiation exposure must be kept as
low as possible. Take note of the following three important measures:
1
Fig. 3: Measures for protection against radioactive radiation
1
Shielding
2
Time
3
Distance
Shielding: Provide good shielding between the source and your-
self as well as all other persons. Special source containers (e.g.
2
MINITRAC 31 • Four-wire 4 ... 20 mA/HART
3
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