DHS 157.03(269) (269) “Prescribed dose” means any of the following:

DHS 157.03(269)(a) (a) For gamma stereotactic radiosurgery, the total dose as documented in the written directive.

DHS 157.03(269)(b) (b) For teletherapy, the total dose and dose per fraction as documented in the written directive.

DHS 157.03(269)(c) (c) For brachytherapy, either the total source strength and exposure time or the total dose, as documented in the written directive.

DHS 157.03(269)(d) (d) For remote afterloaders, the total dose and dose per fraction as documented in the written directive.

DHS 157.03(270) (270) “Pressure demand respirator” means a positive pressure atmosphere-supplying respirator that admits breathing air to the facepiece when the positive pressure is reduced inside the facepiece by inhalation.

DHS 157.03(271) (271) “Primary dose monitoring system” means a system which will monitor the useful beam during irradiation and which will terminate irradiation when a pre-selected number of dose monitor units have been delivered.

DHS 157.03(272) (272) “Primary protective barrier” means the material, excluding filters, placed in the useful beam.

DHS 157.03(273) (273) “Principal activities” means activities authorized by the license that are essential to achieving the purpose for which the license was issued or amended. “Principal activities” do not include storage during which no licensed material is accessed for use or disposal and activities incidental to decontamination or decommissioning.

DHS 157.03(274) (274) “Product conveyor system” means a system for moving the product to be irradiated to, from and within the area where irradiation takes place.

DHS 157.03(275) (275) “Protective apron” means an apron made of radiation absorbing materials used to reduce radiation exposure to the wearer.

DHS 157.03(276) (276) “Protective barrier” means a primary or secondary protective barrier of radiation absorbing material or materials used to reduce radiation exposure.

DHS 157.03(277) (277) “Protective glove” means a glove made of radiation absorbing materials used to reduce radiation exposure and that surrounds the hand and fingers.

DHS 157.03(278) (278) “Public dose” means the dose received by a member of the public from exposure to sources of radiation released by a licensee or registrant or to any other source of radiation under the control of a licensee or registrant. It does not include occupational dose, dose received from background radiation, from any medical administration the individual has received, from exposure to individuals administered radioactive material and released under s. DHS 157.62 (8) or from voluntary participation in medical research programs.

DHS 157.03(279) (279) “Pulsed dose-rate remote afterloader” or “PDR” means a device that uses a single source capable of delivering dose rates in the high dose-rate range, but has both of the following characteristics:

DHS 157.03(279)(a) (a) Is approximately one-tenth of the activity of typical high dose-rate remote afterloader sources.

DHS 157.03(279)(b) (b) Is used to simulate the radiobiology of a low dose rate treatment by inserting the source for a given fraction of each hour.

DHS 157.03(279m) (279m) “Pulsed mode” means operation of the x-ray system such that the x-ray tube current is pulsed by the x-ray control to produce one or more exposure intervals of duration less than one-half second.

DHS 157.03(280) (280) “Pyrophoric liquid” means any liquid that ignites spontaneously in dry or moist air at or below 54.4° C (130° F). This includes spontaneously combustible and water-reactive materials.

DHS 157.03(281) (281) “Pyrophoric solid” means any solid material, other than an explosive material, which under normal conditions is liable to cause fires through friction, retained heat from manufacturing or processing, or which may be ignited readily and, when ignited, burns so vigorously and persistently as to create a serious transportation, handling or disposal hazard.

DHS 157.03(282) (282) “Qualitative fit test” or “QLFT” means a pass or fail fit test to assess the adequacy of respirator fit that relies on the individual’s response to the test agent.

DHS 157.03(283) (283) “Quality control” means an ongoing program to ensure continued reliable performance of the equipment designed to detect changes which may result in a clinically significant degradation in image quality or a significant increase in radiation exposure.

DHS 157.03(284) (284) “Quality factor” or “Q” means the modifying factor listed in tables 157.06A and 157.06B of s. DHS 157.06 (4) that is used to derive dose equivalent from absorbed dose.

DHS 157.03(285) (285) “Quantitative fit test” or “QNFT” means an assessment of the adequacy of respirator fit by numerically measuring the amount of leakage into the respirator.

DHS 157.03(286) (286) “Rad” means the special unit of absorbed dose. One rad is equal to an absorbed dose of 100 erg per gram or 0.01 joule per kilogram (0.01 gray).

DHS 157.03(287) (287) “Radiation” means alpha particles, beta particles, gamma rays, x rays, neutrons, high-speed electrons, high-speed protons and other particles capable of producing ions. “Radiation” does not include non-ionizing radiation, such as radiowaves or microwaves, visible, infrared or ultraviolet light.

DHS 157.03(288) (288) “Radiation area” means any area, accessible to individuals, in which radiation levels could result in an individual receiving a dose equivalent in excess of 0.05 mSv (0.005 rem) in one hour at 30 centimeters from the source of radiation or from any surface that the radiation penetrates.

DHS 157.03(288m) (288m) “Radiation generating device” or “RGD” means any system, device, subsystem, or component thereof, which may generate x-rays or particle radiation between 5 keV and 1 MeV, and not intended for healing arts use for humans or animals. RGD may be fixed or portable with any of the following characteristics:

DHS 157.03(288m)(a) (a) Mobile-means RGD equipment mounted on a permanent base with wheels and/or casters for moving while completely assembled.