CHAPTER 459 - HAZARDOUS MATERIALS

NAC 459.472 “Peak tube potential” defined. (NRS 459.201) “Peak tube potential” means the maximum value of the potential difference across the X-ray tube during an exposure. [Bd. of Health, Radiation Control Reg. § 6.2.36, eff. 2-28-80]

NAC 459.474 “Phototimer” defined. (NRS 459.201) “Phototimer” means a method for controlling radiation exposure to image receptors by the amount of radiation which reaches a radiation monitoring device or devices. The radiation monitoring device or devices are part of an electroni…

NAC 459.476 “Portable equipment” defined. (NRS 459.201) “Portable equipment” means X-ray equipment designed by a manufacturer to be hand-held or hand-carried. [Bd. of Health, Radiation Control Reg. § 6.2.38, eff. 2-28-80]—(NAC A by R185-08, 5-7-2010)

NAC 459.478 “Position indicating device” defined. (NRS 459.201) “Position indicating device” means a device on dental X-ray equipment used to indicate the beam position and to establish a definite source-surface or skin distance. It may or may not incorporate or serve as a beam-l…

NAC 459.480 “Primary protective barrier” defined. (NRS 459.201) “Primary protective barrier” means the material, excluding filters, placed in the useful beam, for protection purposes, to reduce the radiation exposure. [Bd. of Health, Radiation Control Reg. § 6.2.41.1, eff. 2-28-8…

NAC 459.482 “Protective apron” defined. (NRS 459.201) “Protective apron” means an apron made of radiation absorbing materials, used to reduce radiation exposure. [Bd. of Health, Radiation Control Reg. § 6.2.40, eff. 2-28-80]

NAC 459.484 “Protective barrier” defined. (NRS 459.201) “Protective barrier” means a barrier of radiation absorbing material or materials used to reduce radiation exposure. [Bd. of Health, Radiation Control Reg. § 6.2.41, eff. 2-28-80]

NAC 459.486 “Protective glove” defined. (NRS 459.201) “Protective glove” means a glove made of radiation absorbing materials used to reduce radiation exposure. [Bd. of Health, Radiation Control Reg. § 6.2.42, eff. 2-28-80]

NAC 459.488 “Qualified expert” defined. (NRS 459.201) “Qualified expert” means a person who has demonstrated to the satisfaction of the Division that he or she possesses the knowledge and training to measure ionizing radiation, to evaluate safety techniques and to advise regardin…

NAC 459.490 “Radiograph” defined. (NRS 459.201) “Radiograph” means an image receptor on which the image is created directly or indirectly by an X-ray pattern and results in a permanent record. [Bd. of Health, Radiation Control Reg. § 6.2.44, eff. 2-28-80]

NAC 459.492 “Radiographic imaging system” defined. (NRS 459.201) “Radiographic imaging system” means any system in which a permanent or semipermanent image is recorded on an image receptor by the action of ionizing radiation. [Bd. of Health, Radiation Control Reg. § 6.2.45, eff. …

NAC 459.494 “Rating” defined. (NRS 459.201) “Rating” means the operating limits specified by the component manufacturer. [Bd. of Health, Radiation Control Reg. § 6.2.46, eff. 2-28-80]

NAC 459.496 “Recording” defined. (NRS 459.201) “Recording” means producing a permanent form of an image resulting from X-ray photons, for example, a film or videotape. [Bd. of Health, Radiation Control Reg. § 6.2.47, eff. 2-28-80]

NAC 459.500 “Response time” defined. (NRS 459.201) “Response time” means the time required for an instrument system to reach 90 percent of its final reading when the radiation-sensitive volume of the instrument system is exposed to a step change in radiation flux from zero suffic…

NAC 459.502 “Scattered radiation” defined. (NRS 459.201) “Scattered radiation” means radiation that, during passage through matter, has been deviated in direction. [Bd. of Health, Radiation Control Reg. § 6.2.50, eff. 2-28-80]

NAC 459.504 “Secondary protective barrier” defined. (NRS 459.201) “Secondary protective barrier” means a barrier sufficient to attenuate the stray radiation to the required degree. [Bd. of Health, Radiation Control Reg. § 6.2.41.2, eff. 2-28-80]

NAC 459.506 “Source” defined. (NRS 459.201) “Source” means the focal spot of the X-ray tube. [Bd. of Health, Radiation Control Reg. § 6.2.51, eff. 2-28-80]

NAC 459.508 “Source-image receptor distance” defined. (NRS 459.201) “Source-image receptor distance,” abbreviated as “SID,” means the distance from the source to the center of the input surface of the image receptor. [Bd. of Health, Radiation Control Reg. § 6.2.52, eff. 2-28-80]—…

NAC 459.510 “Spot film” defined. (NRS 459.201) “Spot film” means a radiograph which is made during a fluoroscopic examination to permanently record conditions which exist during that fluoroscopic procedure. [Bd. of Health, Radiation Control Reg. § 6.2.53, eff. 2-28-80]

NAC 459.512 “Stationary equipment” defined. (NRS 459.201) “Stationary equipment” means X-ray equipment which is installed in a fixed location. [Bd. of Health, Radiation Control Reg. § 6.2.54, eff. 2-28-80]

NAC 459.514 “Stray radiation” defined. (NRS 459.201) “Stray radiation” means the sum of leakage and scattered radiation. [Bd. of Health, Radiation Control Reg. § 6.2.55, eff. 2-28-80]

NAC 459.516 “Technique factors” defined. (NRS 459.201) “Technique factors” means the conditions of operation. They are specified as follows: 1. For capacitor energy storage equipment, peak tube potential in kV and quantity of charge in mAs. 2. For field emission equipment rated f…

NAC 459.518 “Therapeutic-type protective tube housing” defined. (NRS 459.201) “Therapeutic-type protective tube housing” means the tube housing with tube installed and it includes high voltage or filament transformers, or both, and other appropriate elements when they are contain…

NAC 459.520 “Transportable equipment” defined. (NRS 459.201) “Transportable equipment” means X-ray equipment installed in a vehicle or trailer. [Bd. of Health, Radiation Control Reg. § 6.2.58, eff. 2-28-80]

NAC 459.522 “Tube” defined. (NRS 459.201) “Tube” means an X-ray tube, unless otherwise specified. [Bd. of Health, Radiation Control Reg. § 6.2.59, eff. 2-28-80]

NAC 459.524 “Tube housing assembly” defined. (NRS 459.201) “Tube housing assembly” means the tube housing with tube installed. It includes high-voltage or filament transformers, or both, and other appropriate elements when they are contained within the tube housing. [Bd. of Healt…

NAC 459.526 “Tube rating chart” defined. (NRS 459.201) “Tube rating chart” means the set of curves which specify the rated limits of operation of the tube in terms of the technique factors. [Bd. of Health, Radiation Control Reg. § 6.2.61, eff. 2-28-80]

NAC 459.528 “Useful beam” defined. (NRS 459.201) “Useful beam” means the radiation which passes through the tube housing port and the aperture of the beam-limiting device when the exposure switch or timer is activated. [Bd. of Health, Radiation Control Reg. § 6.2.62, eff. 2-28-80…

NAC 459.530 “Variable aperture beam-limiting device” defined. (NRS 459.201) “Variable aperture beam-limiting device” means a beam-limiting device, commonly referred to as an adjustable collimator, which has capacity for stepless adjustment of the X-ray field size at a given sourc…

NAC 459.532 “Visible area” defined. (NRS 459.201) “Visible area” means that portion of the input surface of the image receptor over which incident X-ray photons produce a visible image. [Bd. of Health, Radiation Control Reg. § 6.2.64, eff. 2-28-80]

NAC 459.534 “X-ray control” defined. (NRS 459.201) “X-ray control” means a device which controls input power to the X-ray high-voltage generator or the X-ray tube. It includes equipment which controls the technique factors of an X-ray exposure. [Bd. of Health, Radiation Control R…

NAC 459.536 “X-ray equipment” defined. (NRS 459.201) “X-ray equipment” means an X-ray system, subsystem or component. This term includes mobile, portable, stationary and transportable X-ray equipment. [Bd. of Health, Radiation Control Reg. § 6.2.66, eff. 2-28-80]

NAC 459.538 “X-ray field” defined. (NRS 459.201) “X-ray field” means the area of the intersection of the useful beam and any one of the set of planes parallel to and including the plane of the image receptor, whose perimeter is the locus of points at which the exposure rate is on…

NAC 459.540 “X-ray high-voltage generator” defined. (NRS 459.201) “X-ray high-voltage generator” means a device which transforms electrical energy from the potential supplied by the X-ray control to the tube operating potential. The device may also include means for transforming …

NAC 459.542 “X-ray system” defined. (NRS 459.201) “X-ray system” means an assemblage of components for the controlled production of X-rays. It includes minimally an X-ray high-voltage generator, an X-ray control, a tube housing assembly, a beam-limiting device, and the necessary …

NAC 459.544 “X-ray subsystem” defined. (NRS 459.201) “X-ray subsystem” means any combination of two or more components of an X-ray system for which there are requirements specified in NAC 459.400 to 459.624, inclusive. [Bd. of Health, Radiation Control Reg. § 6.2.70, eff. 2-28-80…

NAC 459.546 “X-ray tube” defined. (NRS 459.201) “X-ray tube” means any electron tube which is designed for the conversion of electrical energy into X-radiation. [Bd. of Health, Radiation Control Reg. § 6.2.71, eff. 2-28-80]—(NAC A 4-27-84)

NAC 459.550 Scope. (NRS 459.201) NAC 459.400 to 459.624, inclusive, establishes requirements, binding upon registrants, for use of X-ray equipment by prescription from or under the supervision of a person authorized by and licensed in accordance with state statutes to engage in t…

NAC 459.551 Notification and report of medical misadministration; maintenance of record of medical misadministration. (NRS 459.201) 1. A registrant for a radiation machine, including, without limitation, a therapeutic X-ray system, shall: (a) Notify the Division by telephone not …

NAC 459.552 Administrative controls: Direction of operation by registrants. (NRS 439.200, 459.201) 1. The registrant is responsible for the operation of the radiation machines which he or she has registered with the Division. The registrant shall ensure that the provisions of NAC…

NAC 459.554 Administrative controls: Radiographic exposure. (NRS 439.200, 459.201) 1. Except for patients who cannot be moved out of the room, only the staff and ancillary personnel required for the medical procedure or training may be in the room during the radiographic exposure…

NAC 459.556 Administrative controls: Minimum exposure techniques; use of portable or mobile equipment. (NRS 459.201) 1. Procedures and auxiliary equipment designed to minimize exposure to the patient and personnel commensurate with obtaining the needed diagnostic information must…

NAC 459.558 Personnel monitoring. (NRS 459.201) All persons who are associated with the operation of an X-ray system are subject to the occupational exposure limits and the requirements for the determination of the doses which are stated in NAC 459.325 and 459.365. When protectiv…

NAC 459.5585 Instruction on radiation safety. (NRS 459.201) A registrant shall annually provide instruction on radiation safety to each person who provides patient care and treatment planning for patients. The instruction must include, without limitation: 1. Instruction on the op…

NAC 459.559 Quality management program. (NRS 459.201) 1. Each registrant shall establish and maintain a written quality management program to ensure that a radiation therapy system is used as directed by the authorized user. The program must include, without limitation, the follo…

NAC 459.5595 Requirements for registrants of portable equipment which is hand-held and facilities which house such equipment. (NRS 459.201) In addition to the requirements of NAC 459.400 to 459.624, inclusive, registrants of portable equipment which is hand-held and facilities wh…

NAC 459.564 Diagnostic X-ray systems. (NRS 459.201) In addition to other requirements of NAC 459.400 to 459.624, inclusive, all diagnostic X-ray systems must meet the following requirements: 1. The control panel containing the main power switch must bear the warning statement, le…