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DOE-HDBK-1109-97
Radiological Safety Training for Radiation-Producing (X-Ray) Devices
Instructor's Guide
Lesson Plan
Instructor's Notes
B.
INCIDENTAL AND INTENTIONAL DEVICES
Objective 7
X-ray systems are divided into two broad
categories: intentional and incidental.
An incidental X-ray device produces X-rays that
are not wanted or used as a part of the designed
purpose of the machine. Shielding on an
incidental X-ray device should preclude significant
exposure. Examples of incidental systems are
computer monitors, televisions, electron
microscopes, high-voltage electron guns, electron
beam welding machines, electrostatic separators,
and Jennings switches.
An intentional X-ray device is designed to
generate an X-ray beam for a particular use.
Examples include X-ray diffraction and
fluorescence analysis systems, flash X-ray
systems, medical X-ray machines, and industrial
cabinet and noncabinet X-ray equipment.
Intentional X-ray devices are further divided into
two subcategories: analytical and industrial.
ANSI has issued two standards that provide
radiation safety guidelines for X-ray systems.
ANSI N43.2 applies to non-medical X-ray systems
and ANSI N43.3 applies to X-ray diffraction and
fluorescence industrial systems.
64


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