§346.370. Power Failures

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

 

b)         The lock on the door of the radiation room of a panoramic irradiator shall not be deactivated by a power failure.

 

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

 

d)         If non-electrical power is used to control or operate any irradiator safety feature, failure of that power source shall automatically return the radiation sources to their fully shielded position.