38477BA2B
2 ā 168 25.5.09
2 Installation Volume 2
2.5.4 Rod Sources
Increased radiation dose due to open beam path!
A too high dose of radiation may be harmful to your health.
A source may be transported only in its shielding. The shielding
must be closed during transportation and installation.
Rod source shielding For rod sources, cylinder-shaped shieldings having the length of
the source are used which are provided with a radiation exit slit
(see Figure 2-28).
Figure 2-28 Rod source shielding
The shielding is placed on a suitable bracket at the measuring site.
For larger measuring ranges, several parts are mounted on top of
each other. Robust construction, especially of the moving parts of
the rotating shutter, ensures reliable performance even in
heavy-duty environments.
Function failure due to damage
The detector fixture must not transfer any vibrations or heat onto
the shielding; otherwise the locking mechanism may be damaged
and the shielding effectiveness may be adversely affected.
Therefore, install the fixture on a vibration-free support or attenu-
ate possible vibrations using vibration absorbers. Prevent heat
transfer by using suitable insulating materials.
Installing the rod source shielding
Before installing the source shielding or the source, you have to
determine the background for rod detectors (see Volume 3, section
4.3.1 on page 3ā351).
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