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Related Experiment Videos

[Appropriate dust control measures for jade carving operations].

Jiang Liu1, Qiushui Wang, Guangquan Liu

  • 1Institute for Environmental Health and Related Product Safety, Chinese Center for Disease Control and Prevention, Beijing 100050, China.

Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi = Zhonghua Laodong Weisheng Zhiyebing Zazhi = Chinese Journal of Industrial Hygiene and Occupational Diseases
|December 26, 2003
PubMed
Summary

Implementing effective dust control measures, including local exhaust ventilation and wet processing, significantly reduces airborne dust in jade carving workshops. This ensures compliance with national health and emission standards for a safer working environment.

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Area of Science:

  • Industrial Hygiene
  • Occupational Safety Engineering
  • Environmental Control Technology

Context:

  • Jade carving operations generate significant airborne dust, posing health risks to workers.
  • Existing dust control methods may be insufficient to meet stringent national standards.
  • Understanding dust particle size distribution and collector efficiency is crucial for effective control.

Purpose:

  • To establish and evaluate appropriate dust control measures for jade carving workplaces.
  • To assess the effectiveness of local exhaust ventilation (LEV) systems and dust collectors.
  • To ensure compliance with national hygienic and emission standards for dust control.

Summary:

  • A study implemented wet processing and a local exhaust ventilation system with specialized slot hoods (2.5 m/s face velocity, 600 m3/h exhaust volume).

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  • Impinging scrubbers (97% efficiency) and bag filters (98% efficiency) were used for dust collection.
  • Fan and pipe sizing were optimized based on airflow, pressure, and collector requirements.

    • Impact:

    • Post-implementation, workplace dust concentrations met or neared national hygienic standards.
    • Treated dust-laden air from the LEV system met national emission standards.
    • The study provides a practical framework for dust control in similar artisanal industries.