Section R12-1-908. Particle Accelerator Controls and Interlock Sys- tems

A registrant shall ensure that:

1.        Instrumentation, readouts  and  controls on the  particle accelerator control panel are clearly identified and easily discernible;

2.        All entrances into the area that contains the particle accel- erator room, target room, or other high radiation area, are provided with interlocks that shut down the machine if an entrance door is opened;

3.        If an interlock system connected to an entrance door that provides access to the therapy suite has been tripped, it is not possible to resume operation of the particle accelera- tor by resetting the interlock switch at the entrance where it had been tripped;

4.        Each safety interlock is on a circuit that allows it to oper- ate independently of all other safety interlocks;

5.        If possible, the interlock system is fail-safe in design, so that any defect or component failure in the interlock sys- tem prevents operation of the particle accelerator; and

6.        A scram button or other emergency power cutoff switch is located and easily identifiable in the area that contains the particle accelerator. The registrant shall ensure that the scram button prevents persons from restarting the par- ticle accelerator at the accelerator control panel without resetting the button or switch.

Historical Note

Adopted effective June 30, 1977 (Supp. 77-3). Amended by final rulemaking at 9 A.A.R. 4302, effective Novem- ber 14, 2003 (Supp. 03-3).