Certification for genuine and fake flame arresters
Thread Content
Recently, we came across something interesting: we contacted several manufacturers (without any intention of criticizing them), who claimed that their products had been tested by the \"Quality Supervision and Inspection Center for Fixed Fire Extinguishing Systems and Fire-resistant Components\" and that they had obtained type test reports for the fire dampers. Upon closer inspection, we found that the testing standards used were GB/T13347-1992 from the 1990s. After receiving the guidance, we returned to the company and searched high and low to find this yellowed, unique copy. We tasted it again, then had in-depth discussions; the debates were intense, with everyone’s faces turning red. One realizes how little knowledge one has when needed, and we racked our brains – to put it mildly, we were striving with all our might to prove our points. How did you manage to do this? Is it our hearts that are too naive, or are your tactics too cunning?
Is this a question about the metrics? The 2010 version also required a 2-hour burn resistance. General-purpose valves also have fire-resistant test structures, so it should be possible to achieve this.
This post was last edited by zhengxue on 2017-5-12 10:02. The function of a flame arrester is to prevent flames from spreading from the exposed side of a unit to the protected side. All flame arresters work on the same principle: when a flame tries to pass through a narrow passage made of metal or other heat-conductive materials, the heat from the flame is conducted away until it is extinguished. When the thermal conductive material is heated to a certain temperature, does the flame arrester itself still possess flame-arresting properties if it has become a source of fire? The inside of the pipeline is a closed space where heat cannot escape; such a requirement cannot be met. The standards currently used for testing are generally EN12874 from Europe and USCG 33 CFR from the Coast Guard. Of course, these standards only require flame resistance for pipe-end flame arresters.
This post was last edited by zhengxue on 2017-5-12 11:12
This post was last edited by zhengxue on 2017-5-12 11:12
Please read that standard in detail. Continuous burning can cause the pipe flame arrester to be burned through, and a red-hot stainless steel unit itself constitutes a source of fire. The diagram below can help you understand better.
The tricks are sophisticated; every industry is full of such tricks. One must be cautious when making purchases