Regarding the Jingwei Fine Chemicals accident, some say it was caused by static electricity in non-metallic pipes. What’s your opinion?
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Regarding the accident at Jingwei Fine Chemicals, some say it was caused by static electricity generated in non-metallic pipes. How can static electricity be prevented in such pipes? Since fiberglass or PVC pipes are often used for hydrochloric acid pipelines, how can static electricity be avoided in those as well?
Only potentiometric bonding and connections throughout must be used, with grounding required at regular intervals as specified.
It’s specified in which standard? Everything I can find seems to relate to the electrostatic grounding of metal pipes
1. Strictly control the flow rate per second. 2. Lay the pipelines reasonably. 3. Use antistatic piping. 4. Add static eliminators. 5. Add a trace amount of antistatic agent if the quality of the material permits.
Treat each case individually, choosing the appropriate method or applying a combination of methods.
The generation of static electricity is related to the resistivity of the medium through which it flows, as well as the flow rate. Hydrochloric acid has a very low resistivity, and no static electricity is generated under normal flow conditions.
At present, there is no specific standard that outlines this, but non-metallic pipes will definitely generate static electricity. Therefore, the only option is to use new methods for new facilities and old methods for existing equipment. In practice, one can follow the requirements regarding the electrostatic grounding of metal pipes; after all, safety is the top priority, so remember that.
FRP pipes are also used in everyday applications, and I’m wondering how non-metallic pipes such as FRP and PP pipes can address the issue of static electricity
Hydrochloric acid is an electrolyte solution; where does static electricity come from?
Replace the non-metallic pipes with conductive non-metallic pipes. We can produce antistatic steel skeleton composite pipes, which are already in use in the pharmaceutical and chemical industries.