SOURCE ENCAPSULATION
The source in the Model 4640-B gauge meets regulatory
requirements of U.S. and international authorities as “Special Form”
or “Sealed” source material. With the exception of the direct
radiation hazard, these sources are considered extremely safe.
Sealed sources are encapsulated to prevent leakage of the
radioactive material and to meet radiation safety requirements.
The photon, or gamma source (cesium-137) in the 4640-B is in a
capsule.
Proper use of this gauge (following the instructions in this manual)
and the shielding design of the gauge will keep the exposure levels
at a minimum under normal conditions. It is, however, required that
4640-B users wear personnel dosimetry when using the gauge.
EMERGENCY PROCEDURES
A. RADIATION THEORY
If the nuclear gauge is lost or stolen, then immediately notify the
Radiation Safety Officer (RSO).
The gauge owner should complete the emergency contact
information on the lines furnished below. (Note that company refers
to the gauge owner’s company, not Troxler Electronic
Laboratories.) This information should be readily available to the
gauge operator at all times.
The company RSO is ____________________________________
Call the RSO at ________________________________________
The regulatory agency is _________________________________
Call the agency at _______________________________________
Model 4640-B Appendix A–9
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