engineering controls

the avoidance of hazards through redesign of machinery or equipment (e.g., by using guards, ventilation systems, and radiation shields) and the replacement or removal of unsafe systems or practices. Engineering controls are considered the first resort in the creation of a safe working environment, followed by administrative controls and the use of personal protective equipment. See also hazard-control protocol.

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Psychology term of the day

May 9th 2024

node of Ranvier

any of successive regularly spaced gaps in the myelin sheath surrounding an axon. The gaps permit the exchange of ions across the plasma membrane at those points, allowing the nerve impulse to leap from one node to the next in so-called saltatory conduction along the axon. [Louis A. Ranvier (1835–1922), French pathologist]