WARNING DEVICES FOR INDUSTRIAL RADIOGRAPHY FACILITIES

Subpart 1. Open-beam configurations. Open-beam configurations must have a readily discernible indication of: A. x-ray tube "on-off" status located near the radiation-producing equipment housing, if the primary beam is controlled in an "on-off" manner; or B. shutter "open-closed" status located near each port on the radiation-producing equipment housing, if the primary beam is controlled in "open-closed" manner. Subp. 2. Warning light. An easily visible warning light labeled with the words "X-RAY ON" or other visible warning indicator that clearly shows the equipment is producing ionizing radiation, must be located near a switch that energizes an x-ray tube and illuminated only when the tube is energized. Subp. 3. Warning device labeling. Warning devices must be labeled so that their purpose is easily identified.