Changes in the definition of flammable liquids in GB20801.1-2020
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The new standard includes all flammable liquids of categories A, B, and C; in the 06 version of the standard, flammable liquids were limited to those of categories A and B, as well as those of category C whose operating temperature is above their flash point. The new standard lowers the requirements for flammable liquid media used in pressure pipelines and expands the scope of such pipelines. Class C liquids have a lower fire hazard; is it meaningful to modify the standards in this way?
GB20801.1-2006 includes flammable liquids such as Class C liquids, while TSG D0001-2009 does not include Class C liquids. GB20801.1-2020 does not provide a definition of pressure pipelines, and its scope differs from that of TSG D0001 and the \"Catalogue of Special Equipment\"; as a result, its meaning and scope are not clear enough, leading to potential confusion
Clause 3.11 of GB20801-2006 specifies that flammable and explosive media refer to fluids classified as Category A and Category B as defined in GB50160 and GB50016, as well as fluids whose operating temperature is higher than their flash point.
GB20801.1-2006 3.11 Flammable and explosive media: A general term referring to fluids classified as Category A and B as defined in GB50160 and GB50016, as well as those whose operating temperature is above their flash point. I understand it does not include Category C
It doesn’t include Category C; the electronic version I saw had an error in it
GB20801.1-2006 3.11 Flammable and explosive media: refers to fluids classified as Category A and Category B according to GB50160 and GB50016, as well as those whose operating temperature is higher than their flash point. Class C flammable liquids with a working temperature higher than their flash point can be considered as Class B flammable liquids. Therefore, the 2006 version should include only Class A and Class B flammable liquids and fluids that can be considered as Class B flammable liquids.
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