South Carolina Code of Regulations
Chapter 61 - DEPARTMENT OF HEALTH AND ENVIRONMENTAL CONTROL
Subchapter 61-63 - Radioactive Materials (Title A)
Part XI - LICENSING AND RADIATION SAFETY REQUIREMENTS FOR IRRADIATORS
Section 61-63.XI.RHA 11.15 - Power Failures

11.15.1 If electrical power at a panoramic irradiator is lost for longer than 10 seconds, the sources must automatically return to the shielded position.

11.15.2 The lock on the door of the radiation room of a panoramic irradiator may not be deactivated by a power failure.

11.15.3 During a power failure, the area of any irradiator where sources are located may be entered only when using an operable and calibrated radiation survey meter.