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6 Radiation Protection Volume 1
6.8 Leak Test
Depending on the regulatory authority responsible for the sources
employed in their territory, regularly recurring leak tests have to be
carried out. These tests have to be carried out by authorized tech-
nical experts. The appropriate documents on the source have to be
provided in order to carry out this test.
6.8.1 Required Documents
• Inventory of the sources to be tested with information on the
previous leak tests.
• Source certificate including the following information:
– Nuclide, activity, purchase date, physical-chemical form
– Description of capsule and type of sealing
– Resistance against mechanical and thermal influences or
classification of the source design
• Information on location, intended use as well as on the typical
operational max. mechanical and thermal stress.
• If the sources are installed in an appliance, a drawing has to be
enclosed which clearly shows the position of the source and of
all parts that are essential for its protection against external
influences. Proposals for the best test method should be avail-
able, e.g. through information on alternative test areas and, if
necessary, the required manipulations, how the test can be car-
ried out without adversely affecting the workability of the sys-
tem or appliance.
• Certificate on an acceptance test by the manufacturer.
Alternative test areas For point source shieldings LB 744X
Figure 6-2 Alternative test area on point source shieldings
Turn lever to horizontal position for testing.
Alternative test areas,
if accessible
Source
Source holder
Alternative test area
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