PURPOSE: This rule establishes special requirements for dental radiographic installations.
- (1) The diameter of the useful beam at the cone tip should be not more than 2.75 inches and shall be not more than three inches (3") for routine intraoral radiography.
- (2) A device shall be provided to terminate the exposure after a preset time or exposure.
- (3) The exposure control switch shall be provided with a cord sufficiently long so that the operator can stand at least six feet (6') from the tube housing for all exposures and well away from the useful beam. AUTHORITY: section 192.420, RSMo 1986.* This rule was previously filed as 13 CSR 50- 90.150. Original rule filed Nov. 9, 1964, effective Dec. 9, 1964.
*Original authority: 192.420, RSMo 1963.