The issue of fire separation distances
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:Dizzy: Class A factories should be at a distance of no less than 30 meters from open flames and sources of sparks； The fire separation distance between Class A factories and ordinary civil buildings should not be less than 25 meters ； What is the difference in fire separation requirements between Class A factories and locations where open flames are used, as well as ordinary civil buildings? Are no fires used in civil buildings?
The starting point is different; Class A factories should be at a distance of no less than 30 meters from sources of open flames and sparks. What matters here is the threat that open flames pose to Class A factories, primarily in terms of flying embers. . . . . . The fire separation distance between Class A factories and ordinary civil buildings should not be less than 25 meters, in view of the threat posed by Class A factories to civilians. It should be noted that the dangerous area for explosions is generally demarcated within a radius of 15 meters. Both of these numbers are set to higher values for greater safety.
Thank you for your advice. I have another question: where does the 15-meter range come from?
Put simply, factories contain flammable and explosive materials, while residential buildings are less affected by this. So the distance requirements are different. My personal understanding.
It’s different. The term \"location with an open flame\" refers to fixed locations, both indoors and outdoors, that have exposed flames or hot surfaces (with the exception of stoves, induction cookers, etc., in residential buildings). Civil buildings refer to residential buildings and public buildings.
It should be the turning distance of the fire truck; I’m not sure, just for reference
15 meters is derived from the zoning method for the explosion ZA hazard area of flammable liquids with a vapor density greater than that of air
I still don’t understand. Could you explain it more clearly, or give an example?
According to the explanatory notes of the Code for Fire Protection Design in Petrochemical Industries, an excerpt from 4.2.12 reads: “Referencing foreign regulations regarding the range of fire and explosion hazards, the hazard range for open equipment containing flammable liquids is set at 22.5 m, while for enclosed equipment it is set at 15 m.” It should be mentioned that the explanatory notes are also important, as they help in understanding the reasons or rationale behind things.
Civil buildings do not necessarily generate an open flame.