10 C.F.R. § 36.27 Fire protection.
Title 10 - Energy
(a) The radiation room at a panoramic irradiator must have heat and smoke detectors. The detectors must activate an audible alarm. The alarm must be capable of alerting a person who is prepared to summon assistance promptly. The sources must automatically become fully shielded if a fire is detected. (b) The radiation room at a panoramic irradiator must be equipped with a fire extinguishing system capable of extinguishing a fire without the entry of personnel into the room. The system for the radiation room must have a shut-off valve to control flooding into unrestricted areas.
Title 10: Energy
PART 36—LICENSES AND RADIATION SAFETY REQUIREMENTS FOR IRRADIATORS
Subpart C—Design and Performance Requirements for Irradiators
§ 36.27 Fire protection.