Safety and power · safety
Time-weighted average
Also known as TWA.
An average exposure calculated across a specified work period, commonly eight hours.
Safety notes
- Measure representative tasks and durations, include peaks and multiple sources, and compare with the correct standard.
- Applicable law, permits, collective agreements, venue rules, and qualified-person decisions take precedence.
In practice
Measure representative tasks and durations, include peaks and multiple sources, and compare with the correct standard.
Explore related entries
Sources
- Recommended Practices for Safety and Health Programs · Occupational Safety and Health Administration
- Safety Bulletins · Contract Services Administration Trust Fund
Educational reference only. Requirements vary by jurisdiction, employer, venue, and production context.