Are asbestos gaskets prohibited?
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It is said that according to the design specifications for oil storage tanks, asbestos gaskets must not be used for hazardous materials. I’m not sure whether such a regulation indeed exists; which chapter and clause does it come from? Please let me know, thank you!
It’s not clear where the steam can go
Asbestos gaskets stick to the flange when heated, making it very difficult to clean the flange when replacing the gasket.
It is mainly because inhaling asbestos dust into the lungs can cause cancer; its use has been banned abroad, and **we have also long established a phase-out plan**
Asbestos materials are primarily used for insulation in industrial equipment and pipelines, with operating temperatures up to 600°C. There are also a greater variety of product forms available for them compared to glass wool. Given the serious risks to human health, developed countries such as Europe, the United States, and Japan have already banned the use of asbestos materials. China too will gradually phase out asbestos-based sealing materials
Foreign countries have banned the use of asbestos, and it seems that China’s shipbuilding industry also implemented a complete ban on asbestos in 2011~~Asbestos is a carcinogen, so it’s better to avoid using it. In applications where lower performance standards are sufficient, high-strength graphite gaskets can be used as substitutes for asbestos rubber gasket pads~~Hehe
Asbestos dust inhaled into the lungs is carcinogenic; **a phase-out plan has been established**
The key is to find the relevant requirements in those regulations and standards; I’d appreciate some advice as well
Our factory has also banned its use; old ones are required to be replaced whenever the opportunity arises. As for the origin, I haven’t heard of it.
This post was last edited by slll611 on 2015-12-12 at 16:27. There is no provision in the design codes for oil storage tanks prohibiting the use of asbestos gaskets; in the codes for fire protection in petrochemical design, “6.3.16” states that the pressure class of valves and piping fittings at the openings of liquefied hydrocarbon storage tanks should be no lower than 2.0 MPa, and wound gaskets should be used for these fittings. ”It also does not state that asbestos gaskets cannot be used. It should be considered from the perspective that the pressure resistance rating of the asbestos gaskets is insufficient. It cannot be used in some corrosive environments either. It can still be used in some low-pressure systems.