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TITLE 25HEALTH SERVICES
PART 1DEPARTMENT OF STATE HEALTH SERVICES
CHAPTER 289RADIATION CONTROL
SUBCHAPTER EREGISTRATION REGULATIONS
RULE §289.233Radiation Control Regulations for Radiation Machines Used in Veterinary Medicine
Repealed Date:04/15/2021

  (46) High radiation area--An area, accessible to individuals, in which radiation levels from radiation machines external to the body could result in an individual receiving a DE in excess of 0.1 rem (1 millisievert (mSv)) in one hour at 30 cm from any source of radiation or from any surface that the radiation penetrates.

  (47) Image intensifier--A device, installed in its housing, that instantaneously converts an x-ray pattern into a corresponding light image of higher energy density.

  (48) Image receptor--Any device, such as a fluorescent screen or radiographic film, that transforms incident x-ray photons either into a visible image or into another form that can be made into a visible image by further transformations.

  (49) Individual--Any human being.

  (50) Individual monitoring--The assessment of DE to an individual by the use of:

    (A) individual monitoring devices; or

    (B) survey data.

  (51) Individual monitoring devices--Devices designed to be worn by a single individual for the assessment of DE. For purposes of this chapter, "personnel dosimeter" and "dosimeter" are equivalent terms. Examples of individual monitoring devices include, but are not limited to, film badges, thermoluminescence dosimeters (TLDs), optically stimulated luminescence dosimeters (OSLs), pocket ionization chambers (pocket dosimeters), and electronic personal dosimeters.

  (52) Informal conference--A meeting held by the agency with a person to discuss the following:

    (A) safety, safeguards, or environmental problems;

    (B) compliance with regulatory or registration condition requirements;

    (C) proposed corrective measures including, but not limited to, schedules for implementation; and

    (D) enforcement options available to the agency.

  (53) Inspection--An official examination and/or observation including, but not limited to, records, tests, surveys, and monitoring to determine compliance with the Act and rules, orders, requirements, and conditions of the agency.

  (54) Ionizing radiation--Any electromagnetic or particulate radiation capable of producing ions, directly or indirectly, in its passage through matter. Ionizing radiation includes gamma rays and x rays, alpha and beta particles, high speed electrons, neutrons, and other nuclear particles.

  (55) Irradiation--The exposure of matter to ionizing radiation.

  (56) kV--Kilovolt.

  (57) kVp--Kilovolt peak (See definition for peak tube potential).

  (58) Lead equivalent--The thickness of lead affording the same attenuation, under specified conditions, as the material in question.

  (59) Lens dose equivalent (LDE)--The external DE to the lens of the eye at a tissue depth of 0.3 cm (300 mg/cm2 ).

  (60) Lost or missing radiation machine(s)--A radiation machine(s) whose location is unknown.

  (61) mA--Milliampere.

  (62) Machine-produced radiation--A stimulated emission of radiation from a manufactured product or device or component part of a manufactured product or device that has an electronic circuit that during operation can generate or emit a physical field of radiation.

  (63) mAs--Milliampere-second.

  (64) Member of the public--Any individual, except when that individual is receiving an occupational dose.

  (65) Minor--An individual less than 18 years of age.

  (66) Mobile service operation--The provision of radiation machines and personnel at temporary sites for limited time periods. The radiation machines may be fixed inside a motorized vehicle or may be a portable radiation machine that may be removed from the vehicle and taken into a facility for use.

  (67) Monitoring--The measurement of radiation and the use of the results of these measurements to evaluate potential exposures and doses. For purposes of this chapter, "radiation monitoring" and "radiation protection monitoring" are equivalent terms.

  (68) Notice of violation--A written statement prepared by the agency of one or more alleged infringements of a legally binding requirement.

  (69) Occupational dose--The dose received by an individual in the course of employment in which the individual's assigned duties involve exposure to sources of radiation from licensed/registered and unlicensed/unregistered sources of radiation, whether in the possession of the licensee/registrant or other person. Occupational dose does not include dose received from background radiation, from any medical administration the individual has received, from exposure to individuals administered radioactive material and released in accordance with this chapter, from voluntary participation in medical research programs, or as a member of the public.

  (70) Order--A specific directive contained in a legal document issued by the agency.

  (71) Party--A person designated as such by the hearing examiner. A party may consist of the following:

    (A) the agency; and

    (B) an applicant, licensee, registrant, accredited mammography facility, or certified industrial radiographer.

  (72) Peak tube potential--The maximum value of the potential difference in kilovolts across the x-ray tube during an exposure.

  (73) Person--Any individual, corporation, partnership, firm, association, trust, estate, public or private institution, group, agency, local government, any other state or political subdivision or agency thereof, or any other legal entity, and any legal successor, representative, agent, or agency of the foregoing, other than the United States Nuclear Regulatory Commission (NRC) and other federal government agencies licensed or exempted by the NRC.

  (74) Personnel monitoring equipment--(See definition for individual monitoring devices.)

  (75) Phototimer--A method for controlling exposures to image receptors by the amount of radiation that reaches a radiation monitoring device. The radiation monitoring device is part of an electronic circuit that controls the duration of time the tube is activated (See definition for automatic exposure control.)

  (76) Portable x-ray equipment--(See definition for x-ray equipment.)

  (77) Primary protective barrier--(See definition for protective barrier.)

  (78) Protective apron--An apron made of radiation absorbing materials used to reduce radiation exposure.

  (79) Protective barrier--A barrier of radiation absorbing materials used to reduce radiation exposure. The types of protective barriers are as follows:

    (A) primary protective barrier--A barrier sufficient to attenuate the useful beam to the required degree; or

    (B) secondary protective barrier--A barrier sufficient to attenuate the stray radiation to the required degree.

  (80) Protective glove--A glove made of radiation absorbing materials used to reduce radiation exposure.

  (81) Public dose--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/registrant. It does not include occupational dose or doses received from background radiation, from any medical administration the individual has received, from exposure to individuals administered radioactive material and released in accordance with this chapter, or from voluntary participation in medical research programs.

  (82) Rad--The special unit of absorbed dose. One rad is equal to an absorbed dose of 100 ergs per gram (erg/g) or 0.01 J/kg (0.01 gray).

  (83) Radiation--One or more of the following:

    (A) gamma and x rays; alpha and beta particles and other atomic or nuclear particles or rays;

    (B) radiation emitted to energy density levels that could reasonably cause bodily harm from an electronic device; or

    (C) sonic, ultrasonic, or infrasonic waves from any electronic device or resulting from the operation of an electronic circuit in an electronic device in the energy range to reasonably cause detectable bodily harm.

  (84) Radiation area--Any area, accessible to individuals, in which radiation levels could result in an individual receiving a DE in excess of 0.005 rem (0.05 mSv) in one hour at 30 cm from the radiation machine or from any surface that the radiation penetrates.

  (85) Radiation machine--Any device capable of producing ionizing radiation except those devices with radioactive material as the only source of radiation.

  (86) Radiation safety officer (RSO)--An individual who has a knowledge of and the authority and responsibility to apply appropriate radiation protection rules, standards, and practices, who must be specifically authorized on a certificate of registration, and who is the primary contact with the agency.

Cont'd...

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