Group standard T/CPCIF 0431-2025 \"Code for Design of Acid and Alkali Tank Areas\"; Group standard T/CPCIF 0432-2025 \"Safety Technical Code for Water Filling Facilities in Liquefied Hydrocarbon Spherical Tanks\"
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Group standard T/CPCIF 0432-2025 \"Safety Technical Specifications for Water Filling Facilities in Liquefied Hydrocarbon Spheres\"; Group standard T/CPCIF 0431-2025 \"Design Specifications for Acid and Alkali Tank Areas\"
Let’s take a look at the guidelines that have been issued: 1) “Table 1: Examples of fire hazard classification for production processes”: Areas where fuming sulfuric acid or fuming nitric acid is concentrated fall under Category B； 2) “Table 3 Examples of Fire Hazard Classification for Stored Materials”: Fuming sulfuric acid and nitric acid belong to Category B. T/CPCIF 0431-2025 \"Code for Design of Acid and Alkali Tank Areas\" – Group Standard ； “Table 1 Classification of fire hazard risks for common fluids in the acid and alkali tank area: 1) Fuming sulfuric acid: Class 5; 2) Aqueous nitric acid solution ≥65% and <70%: Class B ； Fuming nitric acid: ≥70%, Category A. There are discrepancies between the group standards and building codes; could someone with more knowledge explain this?