SECTION 252:410-17-3. Particle accelerator controls and interlock systems

(a)   Labeling. Instrumentation, readouts and controls on the particle accelerator control panel shall be clearly labeled and easily discernible.

(b)   Safety interlock system.

(1)   Each entrance into a target room or other high radiation area must have a safety interlock that shuts off the machine under conditions of barrier penetration.

(2)   Each safety interlock shall must be on a circuit which allows it to operate independently of all other safety interlocks.

(3)   All safety interlocks shall be designed so that any defect or component failure in the safety interlock system prevents operation of the accelerator.

(4)   When a safety interlock system has been tripped, it shall only be possible to resume operation of the accelerator by first manually resetting controls at the position where the safety interlock has been tripped and lastly at the main control panel.

(c)   Scram button. A scram button or other emergency power cutoff switch shall be located and easily identifiable in all high radiation areas. Each cutoff switch must include a manual reset so that the accelerator cannot be restarted from the accelerator control panel until the switch is reset.

[Source: Added at 17 Ok Reg 1136, eff 6-1-00]