6 Maintenance and Repair
Rod source shields LB 8300
34
64217BA2 Rev. 00, 10/2017
6.5
Removing and installing the source
Before conducting extended maintenance work at the shield, you have to remove
the source. After the maintenance work is finished, you can reinstall the source.
This does require the direct handling of the unshielded source.
You must clarify with the responsible supervisory authority in advance whether
your license for handling radioactive substances comprises handling unshielded
sources.
In any case, the source may only be installed/removed by authorised persons. The
competent radiation safety officer is responsible for planning and monitoring the
work.
NOTICE
In order to keep the exposure to radiation during the removal / installation of
the source as low as possible, all persons involved should familiarise
themselves with the exact procedure in advance.
NOTICE
Only remove / install the source in areas with closed floors. Any apertures
which are larger than the external diameter of the source (7 mm) are to be
covered before commencing any work.
6.5.1
Removing the source
To install the source, the following tools are required:
•
pliers to securely grip the source
•
12 mm hexagon wrench to unscrew the screwed sealing plug of the source
holder
•
M3 threaded rod (approx. 50 mm)
