54733-10BA2L
1 – 140 02.2017
10 Source Replacement Volume 1
10.4 Point Source Replacement on LB 744x
Shieldings
In this chapter we will describe how to replace point sources on the
following shieldings:
– LB 7440
– LB 7442
– LB 7444
– LB 7445
– LB 7446
The exchange of radioactive sources must be performed in accor-
dance with applicable regulations under the supervision of the Radi-
ation Safety Officer.
Health hazards due to radiation!
When replacing a source, you have to work with the unshielded
source for a short time. An increased dose of radiation is harmful to
health.
You have to carry a pocket dosimeter during work to measure the
personal dose and to document the actual radiation exposure.
Moreover, work has to be coordinated with the competent Radiation
Safety Manager.
For Germany you have to keep in mind:
Source replacement by the customer is possible only if:
1) the appropriate technical qualification is guaranteed
2) the work to be done to replace the source has been approved
explicitly by the regulatory authority. Your “License to Handle
Radioactive Substances” states whether you are in possession of
such a license.
Point sources have to be fixed on source holders which are then
screwed into the shielding, positioning the source in the center of
the shielding.
Prerequisite for this work is detailed knowledge of the design of the
shielding; appropriate drawings must therefore be available.
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