SENSseries LB 480 Level measurement
BERTHOLD TECHNOLOGIES GmbH & Co. KG
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Volume 1 9 Radiation Protection
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If the source has to be renewed, you have to include the source
number of the original source in your new order. This number con-
sists of three digits, for example:
The first group is a consecutive number, the second group identifies
the month (here: November) and the third the year the source was
manufactured (here: 1994). It is included on the identity plate of
the shielding and also on the leak test certificate that comes with
every source.
9.8 Leak Test
Depending on the stipulations of the regulatory authority responsi-
ble for the sources employed in their territory, regularly recurring
leak tests have to be carried out. These tests have to be carried out
by approved experts, or in consultation with the regulatory author-
ity, by the manufacturer. The appropriate documents on the source
have to be provided in order to carry out this test.
9.8.1 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 maximum 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 beavail-
able, e.g. through information on alternative test areas and, if
necessary, the required manipulations, how the test canbe car-
ried out without adversely affecting the workability of the sys-
tem or appliance.
• Certificate on an acceptance test by the manufacturer.
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