Distance between Class C horizontal storage tanks and Class B factory buildings

The distance from the horizontal storage tank to the inner toe line of the fire dike should not be less than 3 m. Article 4.2.1 The fire separation distances for the layout of equipment and buildings shall, unless otherwise specified in these codes, not be less than those specified in Table 4.2.1. 　　Fire separation distances (in meters) for equipment and building layouts Table 4.2.1 Control rooms, power distribution rooms, laboratories, offices, living quarters Open-flame equipment Process equipment with medium temperature below the auto-ignition point Process equipment with medium temperature equal to or above the auto-ignition point Flammable gas compressors or compressor rooms Intermediate storage tanks, electrodialysis and dehydration tanks Other process equipment rooms Reactors with internal insulation Other process equipment or their rooms Class A A Class B, Class A Class B, Class A Class A Class B, Class A Class B, Class A A B A B Class A B, Class A Class B, Class A Class B, Class A Other process equipment or other rooms Class A A 15 22.5 9 7.5 9 9 7.5 Class A B, Class A A 15 15 9 7.5 Class B, Class A Class B, Class A 9 9 7.5 7.5 Other process equipment or rooms Class A A 15 22.5 9 7.5 9 9 7.5 4.5 Class A B, Class A A 15 75 9 9 9 7.5 Class B, Class A Class B, Class A 9 9 7.5 7.5 7.5 To prevent coking, blockages, control temperature and pressure drops, and avoid side reactions, related equipment with specific process requirements should be arranged closely together. 　　According to Article 4.2.3, the distillation column top condenser, the bottom reboiler and the distillation column, the liquid separation tank, buffer tank, intermediate cooler of the compressor and the compressor itself, as well as other equipment that is closely related to the main equipment, can be connected directly or arranged in close proximity to one another. 　　Paragraph 4.2.4: The distance between the inert gas generator for the benzene dewaxing and degumming units and their kerosene storage tanks can be determined according to process requirements, but it should not be less than 6 m. 　　Article 4.2.5 specifies that the fire separation distance between components such as the fuel gas separator tank and fuel gas heater attached to an open-flame heating furnace and the furnace body shall not be less than 6 m. 　　According to Article 4.2.6, for polymerization solutions prepared by the solution method using Class A B and Class B A liquids as solvents, where the total volume of the storage tank is greater than 800 cubic meters, the fire separation distance between such tank and adjacent equipment and buildings should not be less than 7.5 meters ； When the total volume is less than or equal to 800 cubic meters, there are no restrictions on fire separation distances. 　　Article 4.2.7: There is no requirement for a fire separation distance between the primary instruments for on-line analysis of combustible gases, liquefied hydrocarbons, and combustible liquids and the process equipment. 　　Article 4.2.8: Non-explosion-proof primary online analysis instruments (boxes) installed in areas at risk of explosion shall be provided with positive pressure ventilation. 　　Article 4.2.9: Combined installations are regarded as a single installation; the fire separation distances for their equipment and buildings shall be determined in accordance with those applicable to adjacent equipment and buildings, and such fire separation distances shall comply with the provisions of Table 4.2.1. 　　Article 4.2.10 Equipment should be arranged in an open or semi-open area, and the scope of areas with explosion hazards should be reduced. The scope of areas with explosion hazards shall be determined in accordance with the provisions of the current **standard, ‘Code for Design of Electrical Installations in Explosive and Fire Hazardous Environments’. 　　　　Equipment restricted by process characteristics or natural conditions can be located within the building site. This post was last edited by lbp on 2009-4-3 23:02]

For the first question, you can check the \"Code for Fire Protection Design of Petrochemical Enterprises\"； There are no requirements for the second question.

To ask more specifically: How should the distance between buried Class C storage tanks, such as diesel tanks, and Class B factories be determined?

Take a look at this draft version of the 2008 \"Code for Fire Protection Design of Petrochemical Enterprises\": http://bbs.hcbbs.com/viewthread.php?tid=409839&highlight=%A1%B6%CA%AF%D3%CD%BB%AF%B9%A4%C6%F3%D2%B5%C9%E8%BC%C6%B7%C0%BB%F0%B9%E6%B7%B6%A1%B7