Passive mitigation is defined in ยง 68.3 as “equipment, devices, or technologies that function without human, mechanical, or other energy input.”
Passive mitigation systems include
- building enclosures,
- dikes, and
- containment walls
Measures such as fire sprinkler systems, water curtains, valves, scrubbers, or flares would NOT be considered passive mitigation because they require human, mechanical, or energy input to function.
Source: https://www.epa.gov/rmp/what-measures-qualify-passive-mitigation