Source container FQG61, FQG62
38
Hauser
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The source container must be integrated in the potential equalization system of the plant. In
order to ensure electrical contact between the radiation source container and the mounting
support, the supplied toothed lock washers must be used on two of the flange screws as indicated
in the adjacent graphic.
A0018410
18
Mounting the toothed lock washers
Tightening torque for
mounting screws
Material
Property class
Coefficient of friction
(µ)
Torque
Stainless steel
70
0.14
50 to 140 Nm
(36.87 to 103.25 lbf ft)
Steel
8.8
0.14
50 to 140 Nm
(36.87 to 103.25 lbf ft)
Post-installation check
Measuring the local dose rate
It is essential to measure the local dose rate in the vicinity of the source container and the detector
after mounting and once the radiation source has been installed.
L
CAUTION
Depending on the installation, radiation can also occur outside the actual radiation emission
channel through scattering.
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In such cases it must be shielded off by the use of additional lead or steel shielding. Render and
mark all control and exclusion areas as prohibited for unauthorized entry.
What to do if the product vessel is empty
L
CAUTION
If the vessel is empty, the control area around the vessel must be measured once the unit has
been correctly mounted. If necessary, this area must be cordoned off and marked accordingly.
‣
If there is an entry into the interior space of the vessel, it must be sealed off and marked with a
"radioactive" safety sign.
‣
Access can only be permitted by the competent radiation safety officer after he/she has checked
all the safety precautions. The source container must be switched off for access to be permitted.
‣
The radiation must be switched off if any work is performed in or on the vessel
