Section He-P 4043.04 - Equipment Requirements(a) All open-beam configurations shall be provided with a safety device which prevents the entry of any portion of an individual's body into the primary x-ray beam path or which causes the beam to be shut off upon entry into its path.(b) DHHS/RHS may grant an exemption from the requirement of a safety device for open-beam configurations if the registrant submits an application requesting such exemptions, and: (1) A description of the various safety devices that have been evaluated;(2) The reason each of these devices cannot be used;(3) A description of the alternative methods that will be employed to minimize the possibility of an accidental exposure; and(4) The procedures followed to assure that operators and others in the area will be informed of the absence of safety devices.(c) All open-beam configurations shall contain a warning device.(d) The warning device required in He-P 4043.04(c) shall: (1) Indicate the x-ray tube "on-off" status and be located near the radiation source housing, if the primary beam is controlled in this manner; or(2) Indicate the shutter "open-closed" status and be located near each port on the radiation source housing, if the primary beam is controlled in this manner.(e) Each analytical x-ray machine shall have an easily visible warning light labeled with the words "X-RAY ON" located near any switch that energizes an x-ray tube.(f) The warning light required in He-P 4043.04(e) shall be illuminated only when the x-ray tube is energized.(g) For a radioactive source contained in an analytical device, a warning light shall be located near any switch that opens a housing shutter.(h) The warning light required in He-P 4043.04(e), (f) and (g) shall be illuminated only when the shutter is open.(i) Warning devices shall be labeled so that their purpose is easily identified.(j) Warning devices shall have fail-safe characteristics.(k) Any unused port on a radiation machine source housing shall be secured in the closed position in such a manner as to prevent casual opening.(l) All analytical x-ray equipment shall be labeled with a readily discernable sign(s) bearing the radiation symbol and the words:(1) "CAUTION - HIGH INTENSITY X-RAY BEAM" on the x-ray source housing on one sign, and "CAUTION RADIATION - THIS EQUIPMENT PRODUCES RADIATION WHEN ENERGIZED" near any switch that energizes an x-ray tube if the radiation source is an x-ray tube on another sign; or(2) "CAUTION - RADIOACTIVE MATERIAL" on the source housing in accordance with He-P 4020.07, if the radiation source is a radionuclide.(m) All open-beam configurations shall be equipped with a shutter at each port on the radiation source housing so the shutter cannot be opened unless a collimator or a coupling has been connected to the port.(n) Each radiation machine source housing shall be equipped with an interlock that shuts off the tube if the tube is removed from the radiation source housing or if the housing is disassembled.(o) Each radioactive source housing or port cover or each x-ray tube housing shall be so constructed that, with all shutters closed, the radiation measured at a distance of 5 centimeters from the source housing or for x-ray tubes at any specified tube rating is not capable of producing a dose in excess of 2.5 millirems (0.025 mSv) in one hour.(p) Each x-ray generator shall be supplied with a protective cabinet which limits leakage radiation measured at a distance of 5 centimeters from its surface such that it is not capable of producing a dose in excess of 0.25 millirem (2.5 µSv) in one hour.N.H. Admin. Code § He-P 4043.04
#6827, eff 8-6-98; ss by #8692, INTERIM, eff 7-27-06, EXPIRES: 2-2-07; ss by #8808, eff 1-24-07
Amended byVolume XXXV Number 14, Filed April 9, 2015, Proposed by #10804, Effective 3/26/2015, Expires3/26/2025.