BERTHOLD TECHNOLOGIES LB4710-050, User Manual

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Chapter 2 Safety
Mini-Switch LB 471
17
2.6
Safety Installations
2.6.1 Source Shieldings
Caution!
Radioactivity!
The shielding with the source installed may be taken into opera-
tion by specially licensed persons who have been trained on han-
dling radioactive materials only after consultation and coordination
with the radiological safety officer.
The radiation exit channel must only be opened by authorized per-
sons after consultation with the radiological safety officer.
Modification of or tampering with the shielding construction are
prohibited.
Co-60 or Cs-137 point sources

are used for the system. They
are tightly welded into a sturdy stainless steel capsule, so that the
radioactive substance cannot escape and contamination is pre-
vented. The capsule with the source

is fixed on a holder

and
installed into the shielding.
The shielding consists of a lead cylinder with radiation exit channel

, surrounded by a steel jacket. The locking core

is fixed to a
lever

. The padlock

secures the open / closed position and
protects the source against unauthorized removal.

Shielding

Locking core

Radiation channel

Point sources


Source holder

Lever

Padlock

Cover plate front
When turning the lever

, the locking core is rotated as well and
the radiation exit channel is opened towards the detector. The ar-
row on the lever

is pointing towards “OPEN”.
Source
Shielding
Figure 1:
Point source shielding
radiation channel open
Sectional drawing







