Kitchen fire suppression system design requirements for hotel kitchen areas: kitchen fire suppression devices
I am fire protection specialist Alexander Li. The design of fire suppression systems for hotel kitchen areas is a critical element of fire safety, because kitchens typically involve high-temperature cooking, grease accumulation and open-flame operations, posing an extremely high fire risk; once a fire occurs, it spreads rapidly and is difficult to extinguish. Therefore, the design of kitchen fire suppression installations must strictly comply with codes to ensure rapid and effective fire extinguishment and prevention of re-ignition.
In system design, kitchen fire suppression installations usually refer to "kitchen equipment fire suppression installations," mainly used to protect cooking ranges, exhaust hoods and exhaust ducts. According to Article 8.3.11 of the Code for Fire Protection Design of Buildings (GB 50016-2014, 2018 edition), for catering establishments in public buildings with a business area greater than 500 ㎡, the exhaust hoods and cooking areas of their cooking operation rooms shall be provided with automatic fire suppression installations, and automatic shut-off devices interlocked with the automatic fire suppression installations shall be provided on gas or fuel oil pipelines. Meanwhile, Article 3.1.1 of the Technical Specification for Kitchen Equipment Fire Suppression Installations (CECS 233:2007) explicitly stipulates that the installation shall have the functions of automatic detection, automatic fire suppression, interlocked fuel supply shut-off and alarm. In addition, according to Article 7.6.2 of the Code for Design of Sprinkler Systems (GB 50084-2017), sprinklers with a nominal activation temperature of 93℃ should preferably be used in kitchens; however, kitchen equipment fire suppression installations typically use dedicated extinguishing agents (such as wet chemical extinguishing agents) rather than traditional water systems, to avoid grease splashing.
In actual engineering practice, I once participated in a kitchen renovation project at a five-star hotel. The original design was equipped only with an ordinary automatic sprinkler system, but in accordance with the codes, we added kitchen equipment fire suppression installations covering the cooking ranges, exhaust hoods and the interior of ducts. The installation used heat detectors; when the temperature reached a preset value (typically 180℃-230℃), the wet chemical extinguishing agent was automatically released, and the gas valve and exhaust fan were interlocked and shut off. During construction, it should be noted that the extinguishing agent piping must be made of stainless steel to resist corrosion; nozzle positions must avoid direct flame impingement to ensure uniform coverage of the extinguishing agent.
Summary: The design of hotel kitchen fire suppression systems must combine the requirements of GB 50016 and CECS 233, with emphasis on providing dedicated kitchen equipment fire suppression installations covering cooking ranges, exhaust hoods and ducts, and achieving interlocked fuel shut-off and alarm functions. The above are reference opinions. The actual project situation still needs to be further comprehensively evaluated and implemented in combination with specific operating conditions, site conditions and other factors.