How Many Gas Fire Extinguishers Can Be Installed In A Protection Zone?

There are regulatory requirements for the number of cabinet-type heptafluoropropane gas fire extinguishing devices designed and installed in a place, which shall not exceed 10.

Multiple cabinet-type heptafluoropropane gas fire extinguishing devices should be considered to be evenly distributed so that the concentration of fire extinguishing agent in the place is relatively consistent when spraying.

How many cabinet-type heptafluoropropane gas fire extinguishing devices can be installed in a protection zone at most?

GB50370-2005 "Gas Fire Extinguishing System Design Specification":

3.1.14 The number of prefabricated fire extinguishing systems installed in a protection zone should not exceed 10.

Article explanation: This article stipulates that the number of prefabricated fire extinguishing system devices installed in a protection zone should not exceed 10. This is because the prefabricated fire extinguishing system is not as good as the fixed fire extinguishing system in terms of technology and function; at the same time, the larger the number, the greater the chance of error, so it should be limited in number. Specifically, considering the provisions of this specification on the protection zone for the installation of prefabricated fire extinguishing systems and the various performance requirements for sprinklers, it is considered appropriate to limit it to "not more than 10 units".

Moreover, when there are more than one prefabricated fire extinguishing system devices in the same protection zone, they must be able to be started simultaneously, and the time difference of their action response shall not exceed 2s. This is a strong rule.