Section 30306 - Definitions(a) The definitions in section 30100 shall apply to this article.(b) As used in this article: (1) "Approved continuing education credit" means 50 to 60 minutes of instruction received in subjects related to medical or health physics, as applicable, and accepted for purposes of credentialing, assigning professional status, or certification by: (A) The Commission on Accreditation of Medical Physicists Educational Programs, Inc.; or(B) American Academy of Health Physics.(2) "Automatic exposure control" means a device which automatically controls one or more technique factors in order to obtain at a preselected location(s) a required quantity of radiation.(3) "Cineradiography" means the making of a motion picture record of the successive images appearing on a fluorescent screen.(4) "Contact therapy" means irradiation of accessible lesions, usually employing a very short source-skin distance and potentials of 40-50 KV.(5) "Dead-man switch" means a switch so constructed that a circuit-closing contact can only be maintained by continuous pressure by the operator.(6) "Diagnostic-type tube housing" means an X-ray tube housing so constructed that the leakage radiation measured at a distance of one meter from the source cannot exceed 100 milliroentgens in one hour when the tube is operated at its maximum continuous rate of current for the maximum rated tube potential.(7) "Direct supervision" means that the supervising individual is physically present and available within the facility during the performance of tasks by the supervised individual.(8) "Filter" means material placed in the useful beam to absorb preferentially the less penetrating radiations.(9) "Interlock" means a device for precluding access to an area of radiation hazard, either by preventing entry or by automatically removing the hazard.(10) "Leakage radiation" means all radiation coming from within the tube housing except the useful beam.(11) "Personal supervision" means that the supervising individual is physically present to observe, and correct, as needed, the performance of the individual performing the activities.(12) "Primary protective barrier" means a barrier sufficient to attenuate the useful beam to the required degree.(13) "Protective barrier" means a barrier of attenuating materials used to reduce radiation exposure.(14) "Scattered radiation" means radiation that, during passage through matter, has been deviated in direction.(15) "Secondary protective barrier" means a barrier sufficient to attenuate stray radiation to the required degree.(16) "Shutter" means a device, generally of lead, fixed to an X-ray tube housing to intercept the useful beam.(17) "Stray radiation" means radiation not serving any useful purpose. It includes leakage and scattered radiation.(18) "Supervision" means responsibility for, and control of the quality, radiation safety, and technical aspects of activities being supervised, and being available to the supervised individual.(19) "TCP" means a therapeutic calibration physicist.(20) "Therapeutic calibration physicist" means an individual who meets the requirements of section 30313.10.(21) "Therapeutic-type tube housing" means: (A) For therapeutic X-ray equipment not capable of operating at 500 kilovolt peak (kVp) or above, an X-ray tube housing so constructed that the leakage radiation at a distance of one meter from the source does not exceed one roentgen in one hour when the tube is operated at its maximum rated continuous current for the maximum rated tube potential.(B) For therapeutic X-ray equipment capable of operating at 500 kVp or above, an X-ray tube housing so constructed that the leakage radiation at a distance of one meter from the source does not exceed either one roentgen in one hour or 0.1 percent of the useful beam dose rate at one meter from the source, whichever is greater, when the machine is operated at its maximum rated continuous current for the maximum rated accelerating potential.(C) In either case, small areas of reduced protection are acceptable, provided the average reading over any 100 square centimeters area at one meter distance from the source does not exceed the values given above.(22) "Therapeutic survey physicist" means an individual who meets the requirements of section 30313.05.(23) "TSP" means a therapeutic survey physicist.(24) "Useful beam" means that part of the radiation which passes through the window, aperture, cone, or other collimating device of the tube housing.Cal. Code Regs. Tit. 17, § 30306
1. Renumbering and amendment filed 9-4-73 as an emergency; effective upon filing (Register 73, No. 36). Approved by State Building Standards Commission 11-30-73.
2. Certificate of Compliance filed 12-28-73 (Register 73, No. 52).
3. Amendment of subsection (e) filed 6-18-87; operative 7-18-87 (Register 87, No. 28).
4. Repealer and new section and amendment of NOTE filed 5-13-2020; operative 10-1-2020 pursuant to Government Code section 11343.4(b)(2) (Register 2020, No. 20). Note: Authority cited: Sections 114975, 115000 and 131200, Health and Safety Code. Reference: Sections 114965, 114970, 115000, 115060, 131050, 131051 and 131052, Health and Safety Code.
1. Renumbering and amendment filed 9-4-73 as an emergency; effective upon filing (Register 73, No. 36). Approved by State Building Standards Commission 11-30-73.
2. Certificate of Compliance filed 12-28-73 (Register 73, No. 52).
3. Amendment of subsection (e) filed 6-18-87; operative 7-18-87 (Register 87, No. 28).
4. Repealer and new section and amendment of Note filed 5-13-2020; operative 10/1/2020 pursuant to Government Code section 11343.4(b)(2) (Register 2020, No. 20).