Chapter 9 Maintenance
Mini-Switch LB 471
Point sources are mounted on source holders which are then
screwed into the shielding, positioning the source in the center of
the shielding. Prerequisite for this work is that the personnel are
familiar with the exact shielding construction; therefore, the rele-
vant drawings have to be available.
You should have the following tools handy:
Allan keys in the required sizes: 10, 12 and 13
2 pairs of pliers to take grasp source and source holder.
If sufficient space is available, the source can be replaced directly
in the shielding installed on the container. Prepare an auxiliary
shielding (shielding container, lead bricks, concrete stones, etc.) at
a suitable place and deposit the old and the new source in its
transport shielding there for a short period of time.
Do not touch the source with your fingers to avoid a high
partial body dose.
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