Which Dust Is Non-Silica-Containing According to Circular 02/2019/TT-BYT

16:20, 10/07/2024

On March 21, 2019, the Ministry of Health issued Circular 02/2019/TT-BYT promulgating the national technical regulation on dust - Permissible exposure limits of 05 dust elements at the workplace.

According to the provisions of Circular 02/2019/TT-BYT, non-silica dust is dust that does not contain free silica or contains less than 1% free silica, including the following groups of dust:

- Group 1: Talc, aluminum, bentonite, diatomite, pyrite, graphite, kaolin, activated carbon.- Group 2: Bakelite, iron oxide, zinc oxide, titanium dioxide, silicate, apatite, barium, phosphate, limestone, perlite, marble, portland cement.- Group 3: Dust originating from plants, animals, tea, tobacco, grains, wood.- Group 4: Organic and inorganic dust not otherwise specified.

Additionally, silica dust is dust containing free silica (greater than or equal to 1%), generated by labor, production activities in the working environment. Coal dust is dust generated during the extraction, processing, transportation, and usage of coal, with a free silica content of less than or equal to 5%.

Detailed types of dust in the workplace can be viewed in Circular 02/2019/TT-BYT, effective from September 22, 2019.

- Thanh Lam -

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