What Does TWA Stand For?

TWA stands for Time Weighted Average Limit

TWA, or Time Weighted Average Limit, refers to a regulatory standard that measures the average exposure to a hazardous substance over a specified period, typically an 8-hour workday. This limit is designed to protect workers by ensuring that exposure levels remain within safe thresholds, taking into account fluctuations in concentration during different times of the work shift. By averaging exposure over time, TWA helps assess long-term health risks associated with occupational exposures and promotes safe working environments.

Added on 14th April 2008 | Last edited on 16th June 2025 | Edit Acronym