What general safety principle does LEL measurement adhere to?

LEL, or Lower Explosive Limit, measurement is primarily focused on the reduction of workplace accidents. This principle is crucial in environments where flammable gases or vapors may be present. Monitoring LEL allows for the early detection of potentially hazardous concentrations of flammable materials. By ensuring that the levels do not reach a point where combustion can occur, facilities can significantly reduce the risk of explosions and fires.

While the other choices relate to important safety and operational concerns, they do not capture the primary objective of LEL measurement, which is centered on preventing explosive incidents specifically, thereby maintaining a safer working environment.