jswizzle3737/ontario_laws_and_regs huggingface dataset:
2. (1) The following information is prescribed for the purpose of clause 3 (2) (a) of the Act: 1. The name of the owner of the x-ray machine. 2. The number or identifying name of the x-ray room for which approval of installation is sought. 3. The name of the manufacturer and the model number of the x-ray machine, the anticipated maximum workload, the maximum tube voltage, and the maximum tube current. 4. The thickness and nature of materials that form the boundaries of the x-ray room. 5. The occupancy of the adjacent spaces, including spaces above and below the x-ray room. 6. The percentage of the working day each adjacent space is occupied. 7. The percentage of the exposure time the useful beam is projected toward each adjacent space. (2) The following plan, to be submitted in duplicate, is prescribed for the purpose of clause 3 (2) (a) of the Act: A floor plan drawn to a scale of not less than one to fifty that indicates: 1. The compass point North. 2. The name of the owner and address of the installation. 3. The limits of travel of the x-ray tube within the room. 4. The location of the control booth or the exposure switch. 5. The position of each horizontal or erect x-ray film cassette holder. 6. The location of the darkroom and storage of unprocessed film. (3) In addition to the requirements prescribed in subsection (2) where the application for approval is for the installation of an x-ray machine in a dental facility, the floor plans shall indicate, (a) the position and limits of rotation of the chair; and (b) the position of the head of the person being irradiated.  R.R.O. 1990, Reg.  543, s. 2.
3. (1) Every installation of an x-ray machine shall be shielded with a primary protective barrier and a secondary protective barrier so that, (a) no x-ray worker receives a whole-body-dose-equivalent of more than 1 millisievert (100 millirem) per week; and (b) no person, other than the patient undergoing an application of therapeutic or diagnostic x-rays, who is not an x-ray worker, receives a whole-body-dose-equivalent of more than 0.1 millisievert (10 millirem) per week. R.R.O. 1990, Reg. 543, s. 3 (1). (2) The barriers referred to in subsection (1) shall comply with the shielding standards contained in one of the following: 1. Appendix II (Shielding guides for diagnostic x-ray installations) of Safety Code-20A—X-Ray Equipment in Medical Diagnosis Part A:  Recommended Safety Procedures for Installation and Use, revised in 1999 and published by Health Canada. 2. NCRP Report No. 147—Structural Shielding Design for Medical X-Ray Imaging Facilities, revised on March 18, 2005 and published by the U.S. National Council on Radiation Protection and Measurements. O. Reg. 87/22, s. 2 (1). (3) Where lead shielding is used as a barrier, it shall be mounted in such a manner as to avoid sagging or damage to the lead shielding. R.R.O. 1990, Reg. 543, s. 3 (3). (4) Joints between different kinds of barrier material shall be constructed so that the overall attenuation of the barrier is not impaired. R.R.O. 1990, Reg. 543, s. 3 (4). (5) Windows, doors or other openings in a barrier shall be so constructed that they comply with one of the shielding standards referred to in subsection (2) that apply to barriers. O. Reg. 87/22, s. 2 (2). (6) All doors leading directly into an x-ray room shall be fitted with self-closing devices and, where the doors are accessible to the public, shall have prominently displayed on them warning signs sufficient to alert persons to the presence of the x-ray equipment. R.R.O. 1990, Reg. 543, s. 3 (6). (7) Unprocessed film shall be protected from x-rays being generated by x-ray machines in the facility so that during its storage the increase in optical density caused by unintentional irradiation is less than 0.02 density units. R.R.O. 1990, Reg. 543, s. 3 (7).
4. (1) The following subject-matters for courses of study in the operation of x-ray machines and x-ray equipment are prescribed: 1. Properties of radiation. 2. Interactions of radiation. 3. Biological effects of radiation. 4. Background radiation. 5. Measurement of radiation. 6. Production and characteristics of x-rays. 7. Relationship between technical factors that affect image quality and dose. 8. Radiation protection legislation. 9. Control of radiation hazards. 10. Quality control.  R.R.O. 1990, Reg. 543, s. 4 (1). (2) Revoked:  O. Reg. 242/09, s. 1 (1). (3) Successful completion of one of the following requirements is prescribed for the purposes of sections 5 and 7 of the Act in respect of any person who operates an x-ray machine in a dental diagnostic x-ray facility: 1. A course in dental radiation safety approved by the Director of X-ray Safety. 2. A program or course in dental assisting that is approved by the Director of X-ray Safety at a College of Applied Arts and Technology. 3. On and after the 1st day of January, 1981, a dental assisting program that is approved by the Commission at, i. Career Canada Limited, ii. Career Canada (Hamilton) Limited, iii. Lorne Park Secondary School, iv. Etobicoke Collegiate Institute, v. Sir Allan MacNab Secondary School, vi. Toronto School of Business Inc., 5631 Yonge Street, Willowdale, Ontario, or vii. Barnett-Christie Corporation carrying on business as the College of Business Training, 2820 Danforth Avenue, Toronto, Ontario. 4. A program or course in dental assisting offered by the Canadian Armed Forces.  R.R.O. 1990, Reg. 543, s. 4 (3); O. Reg. 242/09, s. 1 (2).
5. (1) A person who is a member of a class of persons set out in Column 1 of Table 1 is exempt from the provision of subsection 5 (1) of the Act provided that the person only operates an x-ray machine under the supervision of a person set out opposite thereto in Column 2 of Table 1. (2) The owner of an x-ray machine that is installed in a public hospital approved under the Public Hospitals Act or in a private radiological clinic that has no legally qualified medical radiologist on staff is exempt from the requirement of subsection 9 (1) of the Act provided that the owner designates a member of the College of Medical Radiation and Imaging Technologists of Ontario who, in the opinion of the Director of x-ray Safety, is competent to act as radiation protection officer for the facility in which the x-ray machine is installed.  R.R.O. 1990, Reg. 543, s. 5; O. Reg. 359/19, s. 1.
5.1 (1) CT scanners and dental CT scanners are classes of X-ray machines for the purposes of clauses 22 (d) and (e) and subclause 22 (f) (iii) of the Act. O. Reg. 173/11, s. 2; O. Reg. 87/22, s. 3. (2) A member of a class of persons who, under subsection 5 (2) of the Act, is deemed to meet the qualifications to operate an X-ray machine for the irradiation of a human being may only use a CT scanner or a dental CT scanner for the purpose of generating a volumetric representation of a region of the human body if section 5.2 or 5.3 of this Regulation applies, as applicable. O. Reg. 173/11, s. 2.
5.2 (1) A member of the following classes of persons is exempt from the prohibition in subsection 5 (1) of the Act with respect to the operation of a CT scanner, other than a dental CT scanner, for the irradiation of a human being, as long as subsection (2) is complied with:  1. A legally qualified medical practitioner. 2. A member of the College of Medical Radiation and Imaging Technologists of Ontario. 3. A person who is a member of a class of persons set out in Item 1 or 6 in Column 1 of Table 1 provided that the person only operates the CT scanner under the supervision of a person set out opposite that item in Column 2 of Table 1.  O. Reg. 173/11, s. 2; O. Reg. 359/19, s. 2. (2) The exemption under subsection (1) only applies when the irradiation is prescribed by, (a) a legally qualified medical practitioner or an out of province medical practitioner; (b) a member of the Royal College of Dental Surgeons of Ontario who holds a specialty certificate of registration authorizing the practice of the specialty of Oral and Maxillofacial Surgery; or (c) a registered nurse in the extended class or an out of province registered nurse in the extended class. O. Reg. 173/11, s. 2; O. Reg. 87/22, s. 4; O. Reg. 203/23, s. 2.
5.3 (1) A member of the following classes of persons is exempt from the prohibition in subsection 5 (1) of the Act with respect to the operation of a dental CT scanner for the irradiation of a human being, as long as subsection (2) is complied with: 1. A member of the Royal College of Dental Surgeons of Ontario who holds a specialty certificate of registration authorizing the practice of the specialty of Oral and Maxillofacial Radiology. 2. A member of the Royal College of Dental Surgeons of Ontario in compliance with the standards of practice set out in the document dated April 18, 2011 and entitled “Standard of Practice – Dental CT Scanners” that is published by the Royal College of Dental Surgeons of Ontario and approved by the Council of that College. 3. A member of the College of Medical Radiation and Imaging Technologists of Ontario who is under the supervision of a person described in paragraph 1 or 2. 4. A person who is a member of a class of persons set out in Item 2 in Column 1 of Table 1 provided that the person only operates the CT scanner under the supervision of a person set out opposite that item in Column 2 of Table 1 who is also a person described in paragraph 1 or 2.  O. Reg. 173/11, s. 2; O. Reg. 359/19, s. 3. (2) The exemption under subsection (1) only applies, (a) with respect to a dental CT scanner that is installed and operated in a facility that is designated under subsection 23 (2) of the Act, and that is a dental facility operated by a dentist; and (b) when the irradiation is prescribed by a person described in paragraph 1 or 2 of subsection (1).  O. Reg. 173/11, s. 2.
6. Members of the College of Medical and Imaging Technologists of Ontario are exempt from section 6 of the Act in the operation of an x-ray machine for the irradiation of a human being if the irradiation is part of a breast cancer screening program administered by Ontario Health.  R.R.O. 1990, Reg. 543, s. 6; O. Reg. 359/19, s. 4; O. Reg. 58/20, s. 1.
6.1 (1) An out of province medical practitioner is prescribed as a person who can prescribe irradiation for the purposes of clause 6 (1) (a) of the Act. O. Reg. 203/23, s. 3. (2) An out of province registered nurse in the extended class is prescribed as a person who can prescribe irradiation for the purposes of clause 6 (1) (g) of the Act. O. Reg. 203/23, s. 3.
7. The classes of radiation protection officers set out in Column 1 of Table 2 are prescribed and may only act as radiation protection officers for the class of facility set out opposite thereto in Column 2 of Table 2.  R.R.O. 1990, Reg. 543, s. 7.
9. (1) Every diagnostic x-ray machine shall bear either on the external surface of the main x-ray control panel or at the exposure switch location a warning sign that indicates that, (a) unauthorized use is prohibited; and (b) hazardous radiation is emitted when the x-ray machine is activated. R.R.O. 1990, Reg. 543, s. 9 (1). (2) Every diagnostic x-ray machine shall be so constructed that, (a) all controls, meters, lights or other indicators on the machine are readily recognizable and clearly identifiable as to function; (b) the x-ray tube is securely fixed and correctly aligned with the tube housing; (c) the x-ray tube housing maintains its required exposure position without significant drifting, tipping or vibration so as to affect the quality of the image; (d) there are recognizable warning lights or other indicators that indicate, (i) when the machine is energized and is ready to produce x-rays, and (ii) when the x-rays are produced; (e) where the machine has individual technique factors that are either fixed or can be selected manually by the x-ray operator, there are electrical meters, controls or other indicators to enable the x-ray operator to determine those selected technique factors before the patient is irradiated; (f) where the x-ray machine is used in the radiographic mode and has automatically controlled exposure or anatomically related exposure selection or falling load, there is an electrical meter, control or other indicator that enables the x-ray operator to determine the kilovoltage before the patient is irradiated; (g) where the x-ray machine is battery powered, there is a visual indicator that shows whether the battery is charged for proper operation; (h) it is not possible to energize more than one x-ray tube at the same time; and (i) where there are two x-ray tubes, there is a visible indication of which x-ray tube is selected and ready to be activated at the control panel. R.R.O. 1990, Reg. 543, s. 9 (2); O. Reg. 87/22, s. 6. (3) Every diagnostic x-ray machine shall be provided with, (a) an exposure switch, timer or other device that is controlled by the operator to initiate and terminate the irradiations; and (b) filters that, (i) are located in the exit port of the x-ray tube housing or beam limiting device or both, (ii) intercept the entire useful beam, and (iii) at a measured potential set out in Column 1 of Table 8 with a thickness of aluminum set out opposite thereto in Column 2 of Table 8, reduce the exposure at least by half. R.R.O. 1990, Reg. 543, s. 9 (3).
10. (1) Every exposure switch on an x-ray machine shall, (a) be so located that it cannot be conveniently operated outside a shielded area; and (b) where it is part of a mobile machine, be equipped with a cable at least three metres in length. (2) Clause (1) (a) does not apply to an exposure switch that is used in conjunction with mobile x-ray machines, spot-film devices or fluoroscopy. (3) Every exposure switch on an x-ray machine shall be so constructed that it requires continuous pressure by the x-ray operator to produce x-rays, except where the x-ray machine is equipped with a serial changer. (4) Where an exposure switch on an x-ray machine is used in conjunction with a serial changer, the switch shall be so constructed that it permits the x-ray operator to terminate an irradiation at any time. (5) Every exposure switch on an x-ray machine that is a foot switch shall be so constructed as to prevent an unintended exposure if the switch is overturned.  R.R.O. 1990, Reg. 543, s. 10.
11. (1) Every diagnostic x-ray machine and every fluoroscopic x-ray machine shall, except where the x-ray machine is equipped with an automatic exposure control device, be so constructed that the timing device on the machine terminates an irradiation on completion of, (a) a preset time interval; (b) a preset product of current and time; or (c) a preset number of pulses. (2) Where an x-ray machine is equipped with an automatic exposure control device, the device shall terminate the exposure to the patient when a predetermined amount of radiation is detected. (3) Every timing device on a diagnostic x-ray machine and fluoroscopic x-ray machine shall be so constructed that it, (a) resets automatically to its original position or to ZERO on termination of an irradiation; and (b) prevents an irradiation from occurring at the ZERO or OFF
position.  R.R.O. 1990, Reg. 543, s. 11.
12. Every beam limiting device on an x-ray machine shall be so constructed that it affords the same attenuation of leakage radiation as that required of the tube housing assembly.  R.R.O. 1990, Reg. 543, s. 12.
14. (1) The leakage radiation measured at a distance of one metre in any direction from an x-ray source shall not exceed 100 milliroentgens in one hour under any conditions. (2) The leakage radiation measurements referred to in subsection (1) shall be averaged over an area of 100 square centimetres with no linear dimension greater than twenty centimetres.  R.R.O. 1990, Reg. 543, s. 14.
15. (1) Every general-purpose radiographic x-ray machine and every mobile radiographic x-ray machine shall be equipped with an x-ray beam limiting device that, (a) provides for stepless adjustment of the size of the x-ray field; (b) provides for a minimum field size that does not exceed five centimetres by five centimetres at a target-to-image-receptor distance of 100 centimetres; and (c) ensures that at each position, the x-ray field is aligned with the image receptor in such a manner that the x-ray field is always confined within the boundaries of the image receptor. (2) An x-ray beam limiting device referred to in subsection (1) shall, (a) be equipped with an adjustable light beam diaphragm or other device that defines visually the outline of the x-ray field when the axis of the x-ray beam is perpendicular to the plane of the image; or (b) allow the operator to adjust the dimensions of the x-ray field at the image receptor to a size smaller than the dimensions of the image receptor. (3) An adjustable light beam diaphragm or other device that defines visually the outline of the x-ray field shall be so constructed that, (a) misalignment of the visually defined field with respect to the x-ray field along either the length or width of the x-ray field does not exceed 2 per cent of the target-to-image-receptor distance; and (b) the size of the x-ray field in the plane of the image receptor is indicated at selected distances that are accurate to within 3 per cent of the target-to-image-receptor distance.  R.R.O. 1990, Reg. 543, s. 15.
16. Every general-purpose radiographic x-ray machine that is used with only one size of image receptor at a fixed target-to-image-receptor distance shall be equipped with devices to ensure that, (a) the centre of the x-ray field is aligned with the centre of the image receptor to within 2 per cent of the target-to-image-receptor distance; and (b) the x-ray field in the plane of the image receptor does not extend beyond any edge of the image receptor.  R.R.O. 1990, Reg. 543, s. 16.
18. (1) Every x-ray machine that is used to conduct mammographic x-ray examinations shall be equipped with, (a) an x-ray beam limiting device that limits the useful beam so that at any target-to-image-receptor distance specified for the machine the x-ray field in the plane of the image receptor, (i) does not exceed the edge of the image receptor next to the chest wall by more than 2 per cent of the target-to-image-receptor distance, and (ii) except for the edge of an image receptor referred to in subclause (i), does not extend beyond any other edge of the image receptor; (b) an image receptor supporting device that is shielded sufficiently to ensure that for each activation of the x-ray tube the radiation exposure does not exceed 0.1 milliroentgens where, (i) the machine is operated, (A) in the mammographic mode, (B) at the maximum rated x-ray tube potential, (C) at the maximum rated tube current-exposure product for that tube potential, and (D) at the minimum target-to-receptor distance attainable, and (ii) the radiation exposure is averaged over a detection area of 100 square centimetres, with no linear dimension greater than twenty centimetres and centred at five centimetres from an accessible surface beyond the plane of the support device; and (c) a device that will compress the breast of the patient being x-rayed. R.R.O. 1990, Reg. 543, s. 18 (1); O. Reg. 87/22, s. 8 (1). (2) A removable fixed-operative beam limiting device that is installed on an x-ray machine that is constructed or adapted to perform mammographic examinations shall bear on its external surface clearly visible permanent markings that state, (a) the image receptor size; and (b) the target-to-image-receptor distance for which the beam limiting device is designed. R.R.O. 1990, Reg. 543, s. 18 (2). (3) Every mammographic x-ray machine shall be so constructed that the accuracy of kilovoltage calibration for the machine is + 1 kilovolts for kilovoltage up to thirty-five and +
4 per cent for kilovoltage above thirty-five. R.R.O. 1990, Reg. 543, s. 18 (3). (4) Every x-ray machine that is constructed or adapted to perform mammographic examinations shall be so constructed or adapted that, (a) for any selected combination of kilovoltage, current and time, the estimated coefficient of variation of any ten consecutive radiation measurements taken at the same distance within a time period of one hour is not greater than 0.08; (b) where the timer is non-mechanical, it is accurate to within 1/30 second (two cycles) or 10 per cent of the set value, whichever is greater; and (c) where the timer is mechanical, it is accurate to within 1/20 second or 15 per cent, whichever is greater. R.R.O. 1990, Reg. 543, s. 18 (4); O. Reg. 87/22, s. 8 (2).
19. Only tungsten target x-ray tubes shall be used for xeroradiography.  R.R.O. 1990, Reg. 543, s. 19.
20. (1) Every dental x-ray machine and every chiropodic x-ray machine shall be so constructed that, (a) for any selected combination of kilovoltage, current and time, the estimated coefficient of variation of any ten consecutive radiation measurements taken at the same distance within a time period of one hour is not greater than 0.08; (b) when the x-ray machine is operating in the fixed milliamperage mode, the timer is, at each setting, accurate to within 1/30 second (two cycles) or 10 per cent of the set value; and (c) for any selected setting of the peak x-ray tube potential, the actual peak kilovoltage corresponds to the selected value to within + 8 per cent. (2) Clause (1) (b) does not apply to equipment used for panoramic dental examinations.  R.R.O. 1990, Reg. 543, s. 20.
21. (1) Every dental x-ray machine shall be equipped with a beam limiting device that limits the size of the useful beam to a maximum linear dimension of seven centimetres at the end of the localizing cone or device. (2) Subsection (1) does not apply to a panoramic x-ray machine or a cephalometric x-ray machine.  R.R.O. 1990, Reg. 543, s. 21.
22. Every panoramic x-ray machine shall be equipped with a beam limiting device that limits the useful beam at the image receptor to a size not more than 2 per cent of the source-to-image-receptor distance at each dimension of the scanning slit.  R.R.O. 1990, Reg. 543, s. 22.