Is it reasonable to design the fire hazard of the silicon tetrachloride storage area as Category V?
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There is a project in which the client has designed the fire hazard classification for the silicon tetrachloride storage area as Category V. Is this reasonable? I have reviewed the relevant information as follows: In GB 50016, Category V refers to \"non-combustible materials\" (such as steel, glass, etc.), but the high reactivity and toxicity of silicon tetrachloride go beyond what is covered by Category V, which is limited to merely \"physically non-combustible materials\". Provision for exceptions to the standards: Article 3.0.1 of GB 50160-2008 states that for substances that produce flammable or toxic gases when in contact with water, the fire hazard level must be increased. Let’s have an active discussion!
It is unreasonable for Party A to design the fire hazard of the silicon tetrachloride tank area as Category V. The reasons are as follows: 1. According to the definition of Class V materials in GB50016 (Code for Fire Protection Design of Buildings), Class V refers to materials such as steel and glass that pose no fire hazard and have no possibility of generating flammable or toxic gases. Silicon tetrachloride, although not flammable in itself, has a high reactivity and corrosiveness, reacting violently with water to produce hydrogen chloride gas. 2. Article 3.0.1 of GB50160-2008, \"Code for Fire Protection Design of Petrochemical Enterprises\", stipulates clearly that substances that react with water to produce flammable, toxic gases or substances that release large amounts of heat should be assigned to a higher fire hazard classification. Therefore, even though silicon tetrachloride does not burn on its own, it decomposes violently when exposed to moist air or water, releasing large amounts of hydrogen chloride gas (which is highly corrosive and toxic); thus, its classification should be upgraded, rather than simply being classified as Category V. 3. Considering the chemical properties of silicon tetrachloride (it reacts violently with water, generating a large amount of heat and harmful gases), in engineering practice it is generally safer and more prudent to design systems for it as per Class C or even Class B standards. Therefore, classifying the silicon tetrachloride storage area as Class V is clearly in violation of the regulations and fails to take into account the actual risks; it should be corrected promptly and the design category upgraded to ensure safety. .
Thank you to the original poster; I also checked the relevant specifications and provided feedback to the client