Which control helps to enforce operational safety if a system is opened?

Interlocks are critical safety controls designed to enforce operational safety when a laser system is opened or accessed. They function as safety mechanisms that prevent the laser from being activated unless specific conditions are met, typically ensuring that all access points are closed and secure. This protective feature prevents unintended exposure to laser radiation when maintenance or repair work is being conducted, effectively minimizing the risk of accidents and injuries.

Using interlocks, facilities can ensure that only trained personnel can operate or maintain laser systems, as the system will not function unless the interlock is engaged. This adds an important layer of operational safety, as it automatically disables the laser under unsafe conditions.

Other safety controls, like laser barriers or protective curtains, are important as they help contain or block laser beams during operation, but they do not prevent activation when a system is opened. Warning labels serve to inform personnel of potential hazards but do not actively prevent unsafe conditions. Thus, interlocks are specifically designed to enforce safety by controlling the operational status of a laser system during periods when it could be opened or serviced.