New Mexico Administrative Code › Title 20 - ENVIRONMENTAL PROTECTION › Chapter 3 - RADIATION PROTECTION › Part 11 - CABINET X-RAY SYSTEMS › Section 20.3.11.7 - DEFINITIONS

Current through Register Vol. 35, No. 13, July 16, 2024
A. "Access panel"
				means any barrier or panel which is designed to be removed or opened for
				maintenance or service purposes, requires tools to open, and permits access to
				the interior of the cabinets.
B.
				"Aperture" means any opening in the outside surface of the cabinet, other than
				a port, which remains open during generation of x-radiation.
C. "Cabinet x-ray system" means an x-ray
				system with the x-ray tube installed in an enclosure (hereinafter termed
				"Cabinet") which, independently of existing architectural structures except the
				floor on which it may be placed, is intended to contain at least that portion
				of a material thing irradiated, provide radiation attenuation, and exclude
				personnel from its interior during generation of x-radiation. Included are all
				x-ray systems designed primarily for the inspection of carry-on baggage at
				airline, railroad, and bus terminals, and in similar facilities. An x-ray tube
				used within a shielded part of a building, or x-ray equipment that may
				temporarily or occasionally incorporate portable shielding is not considered a
				cabinet x-ray system.
D. "Door"
				means any barrier which is designed to be removable or opened for routine
				operation purposes, does not generally require tools to open, and permits
				access to the interior of the cabinet. For the purposes of Section 1103.D.1
				[Paragraph (1), Subsection D of 20.3.11.1103 NMAC], inflexible hardware rigidly
				affixed to the door shall be considered part of the door.
E. "Exposure" means the quotient of dQ
				divided by dm where dQ is the absolute value of the total charge of the ions of
				one sign produced in air when all the electrons (negatrons and positrons)
				liberated by photons in a volume element of air having mass dm are completely
				stopped in air.
F. "External
				surface" means the outside surface of the cabinet x-ray system, including the
				high-voltage generator, doors, access panels, latches, control knobs, and other
				permanently mounted hardware and including the plane across any aperture or
				port.
G. "Floor" means the
				underside external surface of the cabinet.
H. "Ground Fault" means an accidental
				electrical grounding of an electrical conductor.
I. "Port" means any opening in the outside
				surface of the cabinet which is designed to remain open, during generation of
				x-rays, for the purpose of conveying material to be irradiated into and out of
				the cabinet, or for partial insertion of an object whose dimensions do not
				permit complete insertion into the cabinet.
J. "Primary beam" means the x-radiation
				emitted directly from the target and passing through the window of the x-ray
				tube.
K. "Safety interlock" means a
				device which is intended to prevent the generation of x-radiation when access
				by any part of the human body to the interior of the cabinet x-ray system
				through a door or access panel is possible.
L. "X-ray system" means an assemblage of
				components for the controlled generation of x-rays.
M. "X-ray tube" means any electron tube which
				is designed for the conversion of electrical energy into x-ray
				energy.