Troxler 3430 Plus, Manual Of Operation And Instruction

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Appendix A–8
PERSONNEL MONITORING
In the United States, anyone working with or near radioactive
materials is subject to occupational dose limits. Individual
monitoring of each authorized user is recommended in order to
demonstrate compliance with these dose limits.
The most common types of individual monitoring devices used by
licensees are film badges and thermoluminescent dosimeter (TLD)
badges. Film badges are typically exchanged and processed monthly
due to concerns about film fading. TLD badges are usually
exchanged quarterly. Troxler offers NVLAP-certified personnel
monitoring services using TLD badges.
In Canada, nuclear gauge users are not normally classified as
Atomic Radiation Workers. In such cases, the general public 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 (Am-241:Be) and photon (Cs-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.