SOURCE ENCAPSULATION
The source in the Model 3430 gauge meets regulatory requirements
of U.S. and international authorities as “Special Form” sealed
source material. The sources are encapsulated to prevent leakage of
radioactive material and meet radiation safety requirements.
The neutron source (americium-241:beryllium in the Model 3430 or
californium-252 in the Model 3430-M) is compressed and then
welded inside stainless steel capsules.
The photon (gamma) source (cesium-137) is sealed in a welded
capsule.
Proper use of this instrument (following the instructions in this
manual) and the shielding design of the instrument will keep the
exposure levels at a minimum under normal conditions. The
operator may, however, be required to wear personnel dosimetry
when using the Model 3430 gauge.
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