Should the control system installed on-site be placed in an on-site cabinet room, or will an open area suffice?
Thread Content
A new set of incinerator units has been installed; they are not very large, with a capacity of around 300 units. They are controlled by a PLC. The cheapest way to do this is to place the PLC cabinet outside the installation, at a safe distance from any potential fires, and perhaps add a roof over it. Another option is to build the cabinet room on-site; if this is located within the installation area, it’s likely to be resistant to explosions. However, if it’s built outside the area, its explosion resistance will most likely come under scrutiny from experts, which will also result in problems. So I’m looking for the cheapest way to do this; if that works, it would actually be the simplest way to pass the inspections. I’m hoping to find some standard or guideline that can help determine whether it’s necessary to set up a cabinet room for the control system. What criteria should be used to decide on this?
Whether it is necessary to set up an on-site cabinet room depends mainly on the equipment’s environmental conditions, maintenance safety, and **relevant standard requirements. Taking into account fire safety distances, explosion resistance requirements, and the on-site environment, if conditions are harsh, it may be necessary to install a cabinet room to protect the PLC equipment. The \"Code for Construction and Acceptance of Electrical Installation Projects\" can be referred to, and a decision should be made based on actual conditions and expert opinions. If the cheapest option is chosen, ensure that safe operation and easy maintenance are satisfied, while also guaranteeing passage of safety inspections. .
In situations like this, regional cabinet rooms have been set up in recent years to handle such issues. The cabinets for the complete sets of equipment can be made explosion-proof, but they cannot resist the effects of explosive shock waves; therefore, it is best to establish regional cabinet rooms in nearby workshops of categories C and D. If not, then the cabinet room with an overall blast-resistant design needs to be considered