Abstract: The possibility of gas leakage in the actual operation of the public kitchen using piping-gas was discussed, and the currentrelevant national standards of China were analyzed.The unclear and inconsistent points among them were pointed out, andit was considered that the well-ventilated piping gas kitchen does not need emergency ventilation. By enumerating the major domestic cases of gas explosion accidents in recent years and referring to the relevant standards of the United States, some opinions and suggestions on the modification of relative standards and design of piping-gas kitchen ventilation system with the view to ensuring its fire-safety were put forward.

Key words:  pipeline-gas, public kitchen, accident ventilation, standard and code, fire safety