Definition of “substation” in the Catalogue for Safety Classification and Rectification of Hazardous Chemical Enterprises
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The clause states that the control rooms, cabinet rooms, power distribution stations, laboratories, offices, etc. of the installation shall not be located in the same building as rooms containing Class A or Class B A equipment. ” Substations include transformer substations and distribution substations, which can be installed separately or together. The main purpose of this provision is to prevent damage to personnel or critical facilities in the event of fires or explosions involving Class A equipment Type A and Type B. If the control room, cabinet rooms, and power distribution rooms become unusable due to an accident, it could severely impact emergency response efforts. Therefore, even if the switchgear room, motor control room, MCC room, etc. are unattended and located outside the explosion classification zone, the requirements of this clause must still be met. Replying department: First Division of Hazardous Chemicals Supervision, Ministry of Emergency Management (see attachment for details); Automatic control instruments
So what is the definition of the same building? Does the presence of a wall gap between them mean they are no longer considered the same building? Or what if they are adjacent, but the wall separating them is a firewall or an explosion-proof wall?
A substation refers to facilities that include both transformers and distribution units, used for tasks such as voltage transformation, frequency conversion, power distribution, and control. According to the definitions in the Catalogue for Safety Classification and Rectification of Hazardous Chemical Enterprises, substation rooms should be located in separate buildings from those housing Class A and Class B A equipment. This is to prevent damage to personnel or critical facilities in the event of fires or explosions in Class A and Class B equipment, and to ensure that the inability to use facilities such as control rooms, cabinet rooms, and substation areas due to accidents does not severely impact emergency response efforts. This requirement still needs to be met even if facilities such as distribution rooms, motor control rooms, and MCC rooms are located outside the explosion classification areas and are unattended. .