Objective
To analyze and evaluate the protective effects of a comprehensive dust control program in a urea-formaldehyde molding powder plant, and provide scientific evidence for dust hazards control in the industry.
Methods
Excessive dust concentration in workplaces and unqualified dust removal equipment design or installation were subject to remediation. A six-month dust control program was conducted including preliminary field investigation, dust removal equipment design, protective equipment update, and on-site dust monitoring. Field investigation and on-site detection were carried out to compare the before-and-after workplace dust concentrations and test the hood capture velocities of new local exhaust ventilation facilities.
Results
Before the dust control program, the dust removal equipment were not effective, and excessive total dust concentrations were detected in multiple workstations; to be specific, the excess multiple of total dust concentrations in 70% selected wokstations exceeded occupational health standards, and the maximum was 3.7 times higher than the standard. After the control program, the total dust concentrations in all workplaces were qualified. The hood capture velocities of new local exhaust ventilation facilities was satisfactory for dust control.
Conclusion
The dust control program is proved to be effective in the urea-formaldehyde molding powder plant and deserves promotion.
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