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Aerosols generated by accidents: pressurized liquid release experiments.
American Industrial Hygiene Association Journal
|April 1, 1984
Summary
Accidental airborne releases from pressurized liquid releases were studied. Containment pressure significantly impacts airborne mass, with releases producing respirable particles relevant for facility safety assessments.
Area of Science:
- Environmental Science
- Chemical Engineering
- Industrial Safety
Background:
- Facility safety assessments require estimating airborne releases from accidents.
- Aerosol generation during accidental releases is crucial for determining source terms.
- Pressurized liquid releases represent a severe accidental release scenario.
Purpose of the Study:
- To investigate aerosol generation from pressurized liquid releases in static air.
- To quantify the mass airborne as a function of source size and containment pressure.
- To develop estimation methods for airborne releases in static air.
Main Methods:
- Conducted pressurized liquid release experiments in static air.
- Varied source size and containment pressure.
- Focused on releases with containment breach above the liquid level.
Main Results:
- Containment pressure was the only significant parameter for releases with the breach above the liquid.
- Airborne mass ranged from 4 X 10(-4) to 0.15% of the source.
- All releases generated a significant fraction of respirable particles.
Conclusions:
- Established relationships for estimating releases in static air based on containment pressure.
- Findings are applicable to safety assessments and environmental impact statements for facilities.
- The study highlights the importance of respirable particle generation in accidental releases.