【Haichuan Chemical Valve Management】Series Posts – Pay Attention to the Design! ! -These locations lack explosion suppression and flame arrestors, which is directly considered a serious safety hazard

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Proper management of valves is the foundation for stable operation. Everyone is welcome to engage in discussions and share insights on this series of posts: 【HaiChuan Chemical Valve Management】 series of posts: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=5719309 ---------------------------------------------------------------- Disclaimer: The content contained in this article is intended solely for technical exchange and reference purposes only; it does not constitute any form of professional engineering advice, design basis, or operational guidance. -----------------------------------------------------------------------------------In industries such as petrochemicals, oil and gas storage and transportation, and fine chemicals, which involve flammable gases and liquids, flame arrestors are essential safety devices that prevent the spread of flames and help avoid explosion accidents. Among them, the blast suppression flame arrester, as a flame arrester with the highest level of protection, serves as the \"last line of defense\" for high-risk processes and critical pipelines. 1. Definition: An explosion suppression flame arrester is a safety device that is capable of preventing detonation waves and flames that travel at supersonic speeds (>340 m/s) from propagating, while allowing gases to flow through normally. II. Locations where blast and deflagration arrestors must be installed: 1. Blast and deflagration arrestors should be installed on the exhaust gas collection pipes at the tops of storage tanks for flammable liquids of Class A and B. (Article 7.2.3.3 of the \"Safety Management Standards for Fine Chemical Enterprises\" AQ 3062-2025). 2. Detonation-type flame arresters shall be installed on the pipelines connecting to the storage tank, loading nozzles, and vapor arms. (Article 5.1.3, Paragraph 2 of the Technical Standards for Oil and Gas Recovery Facilities GB/T50759-2022). 3. The oil and gas collection system of the storage tanks shall meet the following requirements: a) An explosion-proof flame arrester shall be installed on the oil and gas collection pipeline at the top of each storage tank. (Article 6.1.18 of the \"Safety Management Specifications for Atmospheric Storage Tanks of Flammable Liquids in Chemical Enterprises\" AQ 3063-2025) III. Severe consequences of failing to install blast suppression and flame arrestors: 1. It is directly classified as a major safety hazard. In accordance with Article 5.4.5 of the \"Criteria for Identifying Major Safety Hazards in Chemical and Hazardous Chemicals Production and Operation Enterprises\" AQ 3067—2026, the absence of blast suppression and flame arrestors in the gas collection pipelines at the tops of storage tanks containing highly volatile flammable liquids results in such tanks being designated as having major hazards, leading to suspension of operations for rectification and administrative penalties. 2. Explosion chain reaction risk: An external fire source or backflow within the pipeline can generate supersonic detonation waves, which can rapidly ignite the oil and gas contained in the storage tanks, leading to chain explosions and fires in the tank area; this can result in equipment damage and casualties. IV. Conclusion: The blast suppression flame arrester is not an ordinary accessory; it is the \"lifeline\" in high-risk areas. In chemical safety management, it must be kept in mind that vapor and gases at the tops of storage tanks containing volatile flammable liquids require explosion-proof arrestors to be installed; their absence represents a serious hazard that must not be tolerated under any circumstances. Only by strictly enforcing standards, selecting the right products accurately, and carrying out proper maintenance can we prevent the risk of flame spread at its source and maintain a safe working environment.