D–8
dose limit of 500 mrem/year applies. Users may not be required
to wear a dosimeter. To establish the personnel monitoring
requirements for your application, consult the conditions of
your radioisotope license and the CNSC regulatory document
R91: Monitoring and Dose Recording for the Individual.
Source Encapsulation
The neutron (americium-241:beryllium in the Model 3440 and
photon (cesium-137) source materials are welded inside
stainless steel capsules. These sealed sources meet U.S. and
international regulatory requirements for classification as
“Special Form” radioactive material for purposes of
transportation. The sealed sources are designed to prevent
leakage of radioactive material under severe accident
conditions. They are also designed to comply with applicable
ANSI classification requirements for sealed sources used in
portable gauges.
Source Rod Inspection
To ensure the integrity of the source rod, Troxler recommends
that a qualified Troxler service person inspect the gauge and the
source rod at least once every five years. This inspection
includes checking for excessive wear, corrosion, or damage that
could affect the safety of gauge operation.
However, as a precaution if the gauge is ever damaged or
dropped, ensure that the tip of the source rod is intact and
undamaged (that is, ensure that the source is not missing) as
described on page D-9.
Contact the Troxler Radiation Safety Department for further
advice.
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