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A demonstration of NIOSH push-pull ventilation criteria
American Industrial Hygiene Association Journal
|March 1, 1987
Summary
This study validated push-pull ventilation criteria for chrome plating tanks. The system effectively controlled hexavalent chromium emissions below current standards when operating as specified.
Area of Science:
- Industrial Hygiene
- Environmental Engineering
- Occupational Safety
Background:
- Chrome plating operations can release hazardous hexavalent chromium.
- Effective ventilation is crucial for controlling workplace exposure.
- NIOSH developed criteria for push-pull ventilation systems.
Purpose of the Study:
- To validate NIOSH-developed criteria for push-pull ventilation systems.
- To assess the effectiveness of these systems in controlling chrome emissions in a real-world setting.
Main Methods:
- Conducted an industrial hygiene study on an operational chrome plating tank.
- Collected air samples for hexavalent and total chromium at ten locations.
- Performed sampling during actual production and dummy load conditions.
Main Results:
- The push-pull ventilation system, adhering to NIOSH criteria, successfully controlled chrome emissions.
- Emission levels were consistently below established standards and guidelines.
- Data confirmed the efficacy of the validated criteria.
Conclusions:
- The validated push-pull ventilation criteria are effective for controlling hexavalent chromium emissions.
- Recommendations are provided for implementing and optimizing these systems.
- This study supports the use of NIOSH criteria for improved workplace safety in chrome plating.