Cap. 303 sub. leg. B

Radiation (Control of Irradiating Apparatus) Regulations(Cap. 303, section 13)[1 October 1965] L.N. 114 of 1965(Format changes—E.R. 2 of 2024) Part I Citation and Interpretation 1. Citation These regulations may be cited as the Radiation (Control of Irradiating Apparatus) Regulations. 2. Interpretation In these regulations, unless the context otherwise requires—approved laboratory (認可檢驗所) means a laboratory approved by the Board for the purposes of regulation 16;dental irradiating apparatus (牙科輻照儀器) means a type of irradiating apparatus specifically designed for the taking of radiographs of the teeth or jaws; (L.N. 225 of 1990)dental practitioner (牙醫) means a registered dentist, or a person with provisional registration, within the meaning of the Dentists Registration Ordinance (Cap. 156), or a person deemed to be a registered dentist under that Ordinance; (33 of 2025 s. 191)diagnostic irradiating apparatus (診斷用輻照儀器) means an irradiating apparatus designed for medical diagnosis; (L.N. 225 of 1990)dose (劑量) is the quantity of absorbed energy from radiation; dose limit (劑量限值) in relation to persons employed in radiation work means a dose of radiation— (a) in the case of the whole body, as a result of exposure of the whole or part of the body, of 20 millisieverts in any calendar year; (b) without prejudice to paragraph (a), in the case of an individual organ or tissue (other than the lens of the eye) or any body extremity or area of skin averaged over any 1 cm2, of 500 millisieverts in any calendar year; (E.R. 2 of 2024) (c) in the case of the lens of the eye—(i) of 20 millisieverts per calendar year, averaged over any 5 consecutive calendar years; or(ii) of 50 millisieverts in any calendar year; (L.N. 185 of 2025) (d) in the case of the abdomen of a woman with reproductive capacity, of 5 millisieverts in any consecutive 3 months interval; and (L.N. 154 of 1995) (e) in the case of a pregnant woman, of 1 millisievert to the fetus during the pregnancy of the woman; (L.N. 225 of 1990; L.N. 154 of 1995) dose rate (劑量率) is the dose per unit of time, usually expressed as grays per minute and symbolized Gy/min. or as sieverts per minute and symbolized Sv/min.;dosemeter (劑量計) means an instrument for measuring exposure to radiation;employ and employment (僱用、受僱) include reference to any kind of work carried out in furtherance of apprenticeship or any agreement for training;equivalent thickness of lead (鉛的等厚) means such thickness of lead as is equally opaque to a specific quality of radiation;filter (射線過濾器) means any substance interposed in a beam of radiation for the purpose of changing its quality or intensity, or both; and filtration (過濾) has a meaning corresponding therewith;Gray (戈瑞) means a unit of absorbed dose of energy from radiation which is equivalent to 1 joule per kilogram of material irradiated; (L.N. 410 of 1982)half-value layer (半值層) means the thickness of material which reduces to half the exposure rate of a particular beam of radiation;intensity (強度) means the quantity of radiation passing through a unit area perpendicular to the direction of the beam of radiation per unit of time;ionometric method (離子濃度測量法) means a method of measurement based on the ionization produced by the radiation which is being measured;licence (牌照) means a licence issued under section 9 of the Ordinance;licensee (持牌人), in relation to any irradiating apparatus, means a person holding a licence for the time being in force issued under the Ordinance with respect to that apparatus;panel (醫務小組) means such committee as the Board may from time to time appoint under section 5 of the Ordinance for the purpose of advising the Board upon matters affecting or concerning the state of health of persons employed or to be employed on, or engaged in, radiation work;personnel radiation monitoring device (工作人員輻射監測器具) means a device designed to be worn or carried by an individual for the purpose of measuring exposure to radiation and includes a photographic film suitable for that purposes, placed in an appropriate film holder; (L.N. 229 of 1985)photograph (照片) means a photograph of approximate size neither greater than 50 × 70 mm nor smaller than 40 × 50 mm; (L.N. 225 of 1990)proximity (接近), in relation to any irradiating apparatus, means a position in which a person may be liable to receive a dose of radiation exceeding 6 millisieverts to any part of the body if such position were retained by him for one calendar year; (L.N. 154 of 1995)quality (質量), in relation to radiation, means the property of the radiation which determines the manner in which it affects and is itself altered by the matter it traverses, expressed quantitatively in terms of equivalent constant potential or half-value layer;radiation (輻射) and rays (射線) mean ionizing radiation;radiation hazard (輻射危害) means the danger to health arising from exposure to ionizing radiation whether such danger is due to radiation arising from sources outside the human body or to radiation from radioactive substances within the body;radiation work (輻射性工作) means work by any person which involves proximity to any irradiating apparatus in operation;sealed source (密封源) means a radioactive substance which is permanently enclosed in a container in such a manner that it or any part of it cannot be separated from the container unless the container is damaged, but also in such a manner as to permit of the emission of radiation;sievert (希沃特) means that quantity of radiation which when absorbed by man produces an effect biologically equivalent to the absorption by man of one gray of X-rays with average specific ionization of 100 ion pairs per micrometre of water, in terms of its air equivalent, in the same region; (L.N. 410 of 1982)therapeutic irradiating apparatus (治療用輻照儀器) means an irradiating apparatus designed for medical therapy; (L.N. 225 of 1990)useful beam (有用束流) means, in the case of X-rays, that part of the radiation from an X-ray tube that passes through the aperture, cone or other device for collimating the X-ray beam, and, in other cases, any radiations from a sealed source that can be employed for the purposes for which the sealed source is used;X-ray machine (X射線機) means any machine that can be used for the production of X-rays.(L.N. 410 of 1982; L.N. 225 of 1990; 32 of 2000 s. 48; E.R. 2 of 2024) Part II Licence 3. Application for licence (1) Every application for a licence for any irradiating apparatus in accordance with the provisions of the Ordinance shall be in Form 1 of Schedule 1.(2) Each such Form shall be completed and delivered to the Board together with the prescribed fee and 2 copies of a photograph of the applicant:Provided that where a partnership or company is the applicant no photograph shall be required.(L.N. 97 of 1970) 4. Licence (1) A licence to manufacture or otherwise produce, or sell or otherwise deal in, or possess or use any irradiating apparatus shall be in Form 2 of Schedule 1.(2) No licence shall be transferable.(L.N. 244 of 1974) 5. Fee The licence fee for any period of 12 months or any part thereof payable to the Board in respect of the grant or renewal of a licence for any irradiating apparatus shall be as prescribed in Schedule 2.(L.N. 97 of 1970; L.N. 244 of 1974) 6. Licence to be exhibited by licensee (1) Every licensee shall cause to be exhibited in a conspicuous place in any premises in which any irradiating apparatus is situated the licence appertaining to such apparatus.(2) Any licensee who fails to comply with any of the provisions of subregulation (1) shall be guilty of an offence and be liable on conviction to a fine at level 3. (L.N. 97 of 1970; L.N. 225 of 1990; E.R. 2 of 2024) Part III Disposal of Apparatus 7. Transfer, abandonment, etc. of irradiating apparatus (1) No licensee shall sell or otherwise transfer any irradiating apparatus except to a person holding a licence in respect of that apparatus.(2) Any licensee who intends to dispose of any irradiating apparatus by—(a) sale or other transfer to another licensee; or(b) abandonment,shall give to the Board not less than 7 days’ notice in writing specifying the apparatus concerned, the proposed date of disposal and, in the case of a disposal under paragraph (a), the name and address of the proposed transferee.(3) No licensee shall abandon, or cause or permit the abandonment of, any apparatus unless the Board has certified in writing that the apparatus has been rendered harmless.(4) Any person who contravenes any of the provisions of subregulation (1), (2) or (3) shall be guilty of an offence and be liable on conviction to a fine at level 4. (L.N. 225 of 1990; E.R. 2 of 2024)(L.N. 97 of 1970) Part IV Health 8. Conditions for first employment in radiation work (1) No employer shall employ any person in any radiation work who—(a) is under the age of 18 years; or(b) has not, within the period of 4 months immediately preceding his first employment by such employer in such work or process, undergone a medical examination by the panel, including blood examination and the taking of relevant medical and occupational histories and has been certified by the Board fit for such employment.(2) Any person may apply in writing to the Board for medical examination by the panel for the purpose of complying with the requirements of subregulation (1)(b) and, upon receipt of the application, the Board shall direct the panel to carry out, free of charge, such examination as soon as may be, but in any event not exceeding 14 days, after receipt of the application and shall within 10 days after the examination supply to the applicant 2 copies of a certificate certifying the date upon which the examination took place and whether the applicant was found to be fit or unfit, as the case may be, for employment in radiation work.(3) Every application made under subregulation (2) shall be accompanied by 3 copies of a recent photograph of the applicant.(4) For the purpose of subregulation (1), the expression first employment (首次受僱) includes re-employment in radiation work following a cessation of such employment for a period exceeding 14 months.(5) Any employer who contravenes any of the provisions of subregulation (1) shall be guilty of an offence and be liable on conviction to a fine at level 4. (L.N. 97 of 1970; L.N. 225 of 1990; E.R. 2 of 2024) 9. Conditions for continued employment in radiation work (1) No employer shall continue to employ any person for any period exceeding 14 months in radiation work unless such person undergoes medical examination by the panel, including blood examination, at intervals of not more than 14 months during the continuance of such employment and is after each such examination certified by the Board to be fit for such employment.(2) Notwithstanding anything contained in subregulation (1), the Board may require, by notice in writing served upon the employer of any person employed in radiation work, that such person shall undergo medical examination by the panel, including blood examination at such time or at such lesser intervals than those specified in subregulation (1) as the Board, having regard to the circumstances of the case, may consider expedient to safeguard the health of such person; and if any such person fails to submit to examination or, after examination, is certified by the Board to be unfit for employment in radiation work, such employer shall forthwith, upon receipt of notice in writing to that effect from the Board, cease to employ such person in radiation work.(3) Whenever a notice in writing is served upon an employer in pursuance of the powers conferred by subregulation (2), a copy thereof shall also be served upon the person to whom the notice relates.(4) Any employer who contravenes any of the provisions of subregulation (1), or continues to employ any person after receipt of a notice from the Board relating to such person to the effect that such person has failed to submit to medical examination required pursuant to the provisions of subregulation (2) or by such medical examination has been found unfit for employment in radiation work, shall be guilty of an offence and be liable on conviction to a fine at level 4. (L.N. 97 of 1970; L.N. 225 of 1990; E.R. 2 of 2024) 10. Presumptions as to exposure to radiation Any change in any part of the body of any person known to have been exposed to radiation which, in the opinion of the panel, is consistent with the effects of over-exposure to radiation shall be deemed to indicate over-exposure thereto. 11. Board to keep records of medical examinations (1) The Board shall keep a record of every medical examination carried out by the panel in accordance with these regulations and shall supply free of charge to every person so examined, and to his employer, if any, a certificate certifying the date upon which such examination took place and whether such person was found to be fit or unfit, as the case may be, to engage in radiation work.(2) Upon application, and upon payment of a fee of $30, the Board shall issue a certified copy of any certificate referred to in subregulation (1) to the person to whom such certificate relates and to any present or past employer of such person. (L.N. 212 of 1989; L.N. 663 of 1994; L.N. 130 of 2006) 12. Employers to report suspected cases of over-exposure to radiation (1) Every employer who has reason to believe that any person employed by him is or appears to be suffering from the effects of over-exposure to radiation shall notify the Board in writing of the facts upon which such belief is based as soon as may be, and in any event not later than 7 days, after such facts have come to his knowledge.(2) Any employer who fails to comply with any of the provisions of subregulation (1) shall be guilty of an offence and be liable on conviction to a fine at level 3. (L.N. 97 of 1970; L.N. 225 of 1990; E.R. 2 of 2024) 13. Medical examination and inquiry in cases of suspected over-exposure to radiation (1) If the Board, as a result of information received or otherwise, has reason to believe that any person employed in radiation work is suffering from over-exposure to radiation the Board shall, in the manner prescribed in regulation 9, require that such person be medically examined by the panel; and if after such examination the Board is satisfied that such person is suffering from the effects of over-exposure to radiation to an extent requiring medical treatment, the Board shall, in addition to any action which the Board may consider appropriate under regulation 9, issue free of charge to such person a certificate certifying as to his condition.(2) Without prejudice to anything contained in subregulation (1), if the Board has reason to believe that any person employed in radiation work is suffering from the effects of, or appears to have been subjected to, over-exposure to radiation, the Board may appoint one or more representatives to investigate the working conditions or the working habits of such person, together with any equipment used by him, and to make report thereon to the Board.(3) If any person wilfully obstructs or, by knowingly giving false information, endeavours to mislead any representative of the Board appointed under subregulation (2) in the carrying out of any investigation under this regulation, he shall be guilty of an offence and be liable on conviction to a fine at level 2. (L.N. 97 of 1970; L.N. 225 of 1990; E.R. 2 of 2024) Part V Control of Exposure to Radiation 14. Dose limit (1) Except in the case of a patient who is required to be exposed to radiation in furtherance of medical treatment or investigation prescribed by a medical practitioner, dental practitioner, registered chiropractor or registered Chinese medicine practitioner, a person must not cause or permit any other person (latter) to be exposed to a dose of radiation to any part of the body in excess of— (33 of 2025 s. 192; L.N. 185 of 2025)(a) if the latter is a person employed in radiation work—the dose limit; or (L.N. 185 of 2025)(b) otherwise—1 millisievert in any calendar year. (L.N. 185 of 2025)(2) Any person who contravenes any of the provisions of subregulation (1) shall be guilty of an offence and be liable on conviction to a fine at level 4. (L.N. 97 of 1970; L.N. 225 of 1990; E.R. 2 of 2024)(3) In this regulation—registered Chinese medicine practitioner (註冊中醫) has the meaning given by section 2(1) of the Chinese Medicine Ordinance (Cap. 549);registered chiropractor (註冊脊醫) has the meaning given by section 2 of the Chiropractors Registration Ordinance (Cap. 428). (33 of 2025 s. 192) 15. Register of employees (1) Every employer who employs any persons in radiation work shall maintain or cause to be maintained a register of such persons.(2) Every such register shall contain the following particulars relating to every person employed in radiation work—(a) the name (together with any alias);(b) photograph (adequate for identification);(c) current residential address;(d) the date of the last medical examination made in accordance with regulation 9 or 13, as the case may be; and(e) the dose of radiation received, as measured in accordance with regulation 16. (L.N. 229 of 1985)(3) Every register maintained in accordance with this regulation shall be open to inspection at all reasonable times by any person authorized thereto in writing by the Board.(4) Any employer who fails to comply with any of the provisions of subregulation (1), (2) or (3) shall be guilty of an offence and be liable on conviction to a fine at level 3. (L.N. 97 of 1970; L.N. 225 of 1990; E.R. 2 of 2024) 16. Recording of personal exposure to radiation (1) The employer of any person employed in radiation work shall make arrangements for and shall direct the wearing by such person of a suitable personnel radiation monitoring device of a type approved by the Board, during any period in which such person is liable to exposure to radiation.(2) (a) Subject to subregulation (4A), where such person is employed in radiation work in any industrial undertaking in a workplace which is notifiable under the provisions of the Factories and Industrial Undertakings Ordinance (Cap. 59) the employer shall obtain at his own expense the personnel radiation monitoring device referred to in subregulation (1) through the Commissioner for Labour, or from a laboratory approved by the Board, and shall arrange for the device, identified by reference to the wearer thereof, to be returned to the Commissioner for Labour or to the laboratory, as the case may be, for examination at such intervals as the Commissioner for Labour may from time to time direct.(b) Subject to subregulation (4A), where such person is employed in radiation work otherwise than in an industrial undertaking in a workplace which is notifiable under the provisions of the Factories and Industrial Undertakings Ordinance (Cap. 59), the employer shall obtain at his own expense the personnel radiation monitoring device referred to in subregulation (1) through the Director of Health or from an approved laboratory, and shall arrange for the device, identified by reference to the wearer thereof, to be returned to the Director, or to the laboratory, as the case may be, for examination at such intervals as the Director may from time to time direct. (50 of 1985 s. 9; L.N. 76 of 1989)(3) Whenever a personnel radiation monitoring device is returned for examination to the Commissioner for Labour, the Director of Health or an approved laboratory, as the case may be, the Commissioner, the Director, or the person in charge of such laboratory shall cause the device to be examined and shall so soon as may be thereafter issue to the employer who submitted the device for examination a certificate certifying the dose of radiation received as measured by the device. (L.N. 76 of 1989)(4) Every employer to whom a certificate in accordance with the provisions of subregulation (3) is issued shall forthwith cause the dose of radiation indicated thereon to be entered in the register of employees required to be kept in accordance with the provisions of regulation 15 against the name of the employee by whom the personnel radiation monitoring device was worn. (L.N. 63 of 1970)(4A) Notwithstanding subregulation (2), an employer may, with the approval in writing of the Board, obtain at his own expense the personnel radiation monitoring device referred to in subregulation (1) otherwise than through the Commissioner for Labour or Director of Health or from an approved laboratory and shall in that case, cause at such intervals as the Board may from time to time direct, the dose of radiation recorded by the device to be entered in the register of employees required to be kept in accordance with the provisions of regulation 15, against the name of the employee by whom the device was worn. (L.N. 229 of 1985; L.N. 76 of 1989)(5) Any employer who fails to comply with any of the provisions of subregulation (1), (2) or (4) shall be guilty of an offence and be liable on conviction to a fine at level 4. (L.N. 97 of 1970; L.N. 225 of 1990; E.R. 2 of 2024)(6) Any person who fails or refuses to wear a suitable personnel radiation monitoring device when so directed by his employer in accordance with the provisions of subregulation (1) shall be guilty of an offence and be liable on conviction to a fine at level 3. (L.N. 225 of 1990; E.R. 2 of 2024)(L.N. 229 of 1985) Part VI Material Protection and Safe Practice 17. Material protection in case of static irradiating apparatus (1) No person shall cause or permit any irradiating apparatus to be used continuously in any room unless the floors, ceilings, walls and observation windows thereof are so constructed that nowhere outside the room does the radiation dose rate exceed 3 micrograys per hour: (L.N. 410 of 1982; L.N. 225 of 1990; L.N. 154 of 1995)Provided that the provisions of this subregulation shall not apply to any floor, ceiling, wall or observation window so sited that the space immediately outside thereof is not capable of habitual occupation by any human being.(2) All protective material, other than sheet lead, shall be indelibly marked in such a way as to show readily its equivalent thickness of lead, and protective materials which depend upon substances other than lead for their protective properties shall in addition have marked thereon the constant electrical potential used for the generation of X-rays under the conditions at which the equivalence applies.(3) All protective glass, including lead glass or lead barium glass, or protective liquid observation windows, shall be clearly and indelibly marked in such a way as to show readily its equivalent thickness of lead.(4) No person shall use any protective material, other than sheet lead, which is not marked in accordance with the provisions of subregulation (2) or (3). (L.N. 225 of 1990)(5) Nothing in this regulation shall be construed to prevent the temporary removal from the address stated in the licence relating thereto of any portable or mobile irradiating apparatus incidental to its operation as such.(6) Any person who contravenes any of the provisions of subregulation (1) or (4) shall be guilty of an offence and be liable on conviction to a fine at level 4. (L.N. 97 of 1970; L.N. 225 of 1990; E.R. 2 of 2024) 18. Filtration of useful beam from irradiating apparatus (1) No person shall use a dental irradiating apparatus or diagnostic irradiating apparatus on a live human body unless the total filtration of the useful beam from the apparatus is equivalent to not less than—(a) 1.5 mm thickness of aluminium for an apparatus with a maximum voltage not exceeding 70 kV;(b) 2.5 mm thickness of aluminium for an apparatus with a maximum voltage exceeding 70 kV;(c) 0.5 mm thickness of aluminium or 0.03 mm thickness of molybdenum for an apparatus specially designed for soft-tissue procedures such as mammography.(2) A person who contravenes subregulation (1) commits an offence and is liable to a fine at level 4. (13 of 1995 s. 2; E.R. 2 of 2024)(L.N. 225 of 1990) 19. X-ray tube housing (1) The protective housing of an X-ray tube shall be so constructed that at every rating specified by the manufacturer for the tube in that housing the radiation leakage rate shall not exceed—(a) 1 mGy in one hour at a focal distance of 1 m for an X-ray tube used in a diagnostic irradiating apparatus;(b) 10 mGy in one hour at a focal distance of 1 m, and 300 mGy in one hour at 5 cm, from any surface of the housing accessible to the patient for an X-ray tube used in therapeutic irradiating apparatus capable of operating at voltages up to 500 kV;(c) 0.1% of the dose rate of the useful beam at 1 m from the surface of an X-ray tube housing used in a therapeutic irradiating apparatus if the tube is capable of operating at voltages above 500 kV.(2) For the purposes of subregulation (1) measurements may be averaged over an area of up to 100 cm2 at a focal distance of 1 m or 10 cm2 at a distance of 5 cm from the surface of the tube housing. (13 of 1995 s. 2)(3) A person who operates or causes to be operated, an X-ray tube which is not enclosed in a protective housing in accordance with subregulation (1) or (2) commits an offence and is liable to a fine at level 4. (13 of 1995 s. 2; E.R. 2 of 2024)(L.N. 225 of 1990) 20. (Repealed L.N. 225 of 1990) 21. Determination of dose rate and quality of radiation (1) No person shall use any irradiating apparatus for therapeutic purposes unless—(a) the dose rate and the quality of the radiation emitted by the apparatus have been measured by a person approved by the Board for that purpose and using an ionometric or other method of measurement also approved by the Board;(b) both the dose rate and the quality of the radiation from such apparatus are periodically so measured at such intervals as the Board may direct; and(c) a record of all such measurements is kept by the licensee and is open to inspection by any person authorized by the Board for that purpose.(2) No person shall use a radiation dosemeter or a radiation dose-rate meter for any determination made in accordance with subregulation (1), unless it is independent of, or corrected for, the quality of radiation within the range for which it is designed or used, and is provided with suitable arrangements for checking its ability to reproduce its readings.(3) Any person who contravenes any of the provisions of subregulation (1) or (2) shall be guilty of an offence and be liable on conviction to a fine at level 4. (L.N. 97 of 1970; L.N. 225 of 1990; E.R. 2 of 2024) 22. Testing of timers for use in connection with irradiating apparatus (1) No person shall use any time switch, exposure timer or treatment time in connection with any irradiating apparatus used for therapeutic purposes unless such switch or timer is tested from time to time, as may be required by the Board, for accuracy by a person approved by the Board for such purpose and when last so tested was found to be accurate to within 1%.(2) Any person who contravenes any of the provisions of subregulation (1) shall be guilty of an offence and be liable on conviction to a fine at level 4. (L.N. 97 of 1970; L.N. 225 of 1990; E.R. 2 of 2024) 23. Supervision of persons undergoing treatment (1) Any person administering any treatment involving the exposure of any patient to radiation from any irradiating apparatus shall, during exposure to such radiation, himself keep the patient under observation and also the apparatus by means of which the treatment is being administered and shall determine the duration of the treatment either by an automatic treatment timer or by an integrating dosemeter.(2) Any person who fails to comply with any of the provisions of subregulation (1) shall be guilty of an offence and be liable on conviction to a fine at level 4. (L.N. 97 of 1970; L.N. 225 of 1990; E.R. 2 of 2024) 24. Recording and checking of filters (1) In any therapeutic application of X-rays, the type of filter used for the useful beam or the half-value layer resulting therefrom shall at each treatment be entered in a treatment record of the patient by the person administering the treatment.(2) If the filter is changed before any treatment, the details of the new filter shall be checked by 2 persons, one of whom shall be the person administering the treatment, and the other the licensee or a person authorized thereto by the licensee.(3) Both persons referred to in subregulation (2) after having checked any new filter in accordance with the provisions of that subregulation, shall cause the details of the new filter and the date upon which it was checked to be entered in the treatment record before any treatment is administered.(4) Any person making any therapeutic application of X-rays who fails to comply with any of the provisions of subregulation (1), (2) or (3) shall be guilty of an offence and be liable on conviction to a fine at level 4. (L.N. 97 of 1970; L.N. 225 of 1990; E.R. 2 of 2024) 25. Prohibition of operation of X-ray machines in presence of ignitable gas or vapour Any person who operates any X-ray machine in an atmosphere which contains ignitable gas or vapour shall be guilty of an offence and be liable on conviction to a fine at level 4.(L.N. 97 of 1970; L.N. 225 of 1990; E.R. 2 of 2024) Part VII Operation of Irradiating Apparatus 26. Restriction on use of irradiating apparatus (1) No person other than a medical practitioner or a person acting under his personal supervision shall operate an irradiating apparatus for any purpose affecting the human body:Provided that notwithstanding the provisions of this regulation, a person referred to in column 1 of Schedule 3 may operate an irradiating apparatus for the purposes specified, and under the conditions stipulated, opposite the reference to that person in column 2 and column 3 of that Schedule respectively. (L.N. 154 of 1995)(1A) No person authorized to operate an irradiating apparatus under this regulation shall use an irradiating apparatus for medical diagnosis or medical therapy unless the apparatus is designed for that use. (L.N. 154 of 1995)(2) Any person who contravenes any of the provisions of subregulation (1) or (1A) shall be guilty of an offence and be liable on conviction to a fine at level 5. (L.N. 97 of 1970; L.N. 154 of 1995; E.R. 2 of 2024) 27. Records of the use of certain rays (1) A record shall be kept by the licensee, at the place of application, of every application of X-rays, gamma rays, beta rays or accelerated subatomic particles applied for medical therapeutic purposes, and such record shall be made available for inspection on request by any person authorized by the Board for that purpose.(2) Any licensee who fails to comply with any of the provisions of subregulation (1) shall be guilty of an offence and be liable on conviction to a fine at level 4. (L.N. 97 of 1970; L.N. 225 of 1990; E.R. 2 of 2024) 28. Warning notices (1) The licensee of any irradiating apparatus shall, if so required by the Board either generally by notice in the Gazette or individually by notice in writing served upon him by the Board, keep posted in a conspicuous place on or near the irradiating apparatus such notice, in English and Chinese, as the Board may direct drawing attention to the hazards attendant upon the improper use of such apparatus.(2) Any licensee who fails to comply with any requirement of the Board notified pursuant to the provisions of subregulation (1) shall be guilty of an offence and be liable on conviction to a fine at level 3. (L.N. 97 of 1970; L.N. 225 of 1990; E.R. 2 of 2024) Schedule 1 Form 1 [reg. 3] RADIATION ORDINANCE(Chapter 303)Application for Irradiating Apparatus Licence I, of , hereby make application for a licence to (a) irradiating apparatus as described hereunder, at (b) 2. (Description of type or types of irradiating apparatus for which a licence is required). 3. My qualifications are as follows (c) Signature of Applicant Dated this day of 19 . (a) State purpose for which licence is required, i.e. to possess, sell, manufacture, operate, etc. (b) (c) State address at which such irradiating apparatus will be situate. This paragraph need only be completed in the case of an application to operate irradiating apparatus. __________ Form 2 [reg. 4] RADIATION ORDINANCE(Chapter 303) Licence No. Irradiating Apparatus Licence Fee Valid until PHOTOGRAPH (Name in full) of (Address in full) is hereby licensed to (a) the following type(s) of irradiating apparatus namely (b) at (c) subject to the conditions endorsed hereon. Dated this day of 19 . for Radiation Board (a) State purpose for which licence is issued, i.e. to possess, sell, manufacture, operate, etc. (b) (c) State type of apparatus to which this licence applies. State address or site at which the apparatus is to be situated. CONDITIONS (L.N. 97 of 1970) Schedule 2 [reg. 5] Category Description of licence Fee $ 1. A licence to possess an irradiating apparatus in a non-functional state or to possess an irradiating apparatus pending consideration of an application for a licence to possess the apparatus in a functional state 410 2. A licence to possess, or to possess and use an irradiating apparatus in a functional state 1,150 3. A licence to use any irradiating apparatus or apparatuses 160 4. A licence to sell or deal in any irradiating apparatus or apparatuses or any licence other than a licence referred to in categories 1, 2 and 3 570 (L.N. 106 of 1997; L.N. 130 of 2006) Schedule 3 [reg. 26] Column 1Person Column 2Purpose Column 3Condition Diagnostic radiographer Medical exposure for diagnostic purposes Acting in accordance with the restrictions on practice of a diagnostic radiographer under the Radiographers (Registration and Disciplinary Procedure) Regulation (Cap. 359 sub. leg. H). Therapeutic radiographer Medical exposure for planning of radiotherapy treatment or therapeutic purposes (a) Acting under the direction of a medical practitioner; (b) acting in accordance with the restrictions on practice of a therapeutic radiographer under the Radiographers (Registration andDisciplinary Procedure) Regulation (Cap. 359 sub.leg. H). Dental practitioner The taking of a radiograph intraorally or extraorally for the examination of the mouth, teeth or jaws of another person, or their associated structures (33 of 2025 s. 193) Nil. Dental surgery assistant The taking of a radiograph intraorally or extraorally for the examination of the mouth, teeth or jaws of another person, or their associated structures (33 of 2025 s. 193) Acting under the personal supervision of a dental practitioner who is present on the premises in which the examination is taking place at the time it takes place. (33 of 2025 s. 193) In this Schedule—dental exposure (牙科照射) means exposure of a person to ionizing radiation for dental purposes;dental surgery assistant (牙科手術助理員) means a person employed to assist a dental practitioner in practising dentistry; (33 of 2025 s. 193)diagnostic radiographer (放射診斷技師) means a radiographer whose name is entered in Category D of the register kept in accordance with the Radiographers (Registration and Disciplinary Procedure) Regulation (Cap. 359 sub. leg. H);medical exposure (醫療照射) means exposure of a person to ionizing radiation either by means of irradiating apparatus or by administration of radioactive substance for a medical diagnostic or medical therapeutic purpose;therapeutic radiographer (放射治療技師) means a radiographer whose name is entered in Category T of the register kept in accordance with the Radiographers (Registration and Disciplinary Procedure) Regulation (Cap. 359 sub. leg. H).(L.N 154 of 1995)