Move Up The Control Hierarchy
Apply the hierarchy of controls to reduce chemical exposure risk at the source.
The best control is the one that does not ask a person to be perfect. Source First Elimination and substitution attack the hazard before exposure exists. In chemical manufacturing, that can mean changing a solvent, buying material pre-diluted, removing a manual sample step, or eliminating an open pour. Barrier Second Engineering controls put hardware between people and energy. Closed transfer, ventilation, interlocks, splash guards, double-block-and-bleed arrangements, and remote sampling all reduce reliance on memory and reflex. Behavior Last Administrative controls and PPE still matter. Training, permits, rotation, labels, gloves, goggles, and respirators are often required. But they work best after…
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