As temperatures drop and the air becomes dry, static electricity is omnipresent. In clean rooms, in addition to anti-static flooring, fire prevention measures must also be implemented. When installing fire-fighting facilities in rooms with valuable equipment and instruments within clean rooms, they must not only comply with the current national standard "Code for Fire Prevention Design of Buildings" (GB 50016), but also meet the following requirements:
When setting up an automatic sprinkler fire suppression system, it is advisable to use a pre-action automatic sprinkler fire suppression system.
When setting up a gas fire suppression system, halon 1211 and fire retardants that can cause asphyxiation in personnel or secondary damage to the protected objects should not be used.
The installation method of water supply and drainage pipelines in clean rooms directly affects the air cleanliness of the room. Therefore, "Regulations" require that pipelines be laid as much as possible outside the clean room to minimize the presence of pipelines within. Currently, the layout of pipelines in clean rooms includes: various main pipelines arranged in technical mezzanines, corridors, and vertical shafts. For clean rooms with upper and lower mezzanines, the main water and drainage pipelines are usually installed in the lower mezzanine; concealed vertical pipelines can be arranged in wall panels, irregular bricks, pipe channels, or technical corridors; branch pipelines are introduced from the main pipelines or vertical pipelines into the clean room, requiring an additional 20-30cm from the upper and lower mezzanines before connecting with the secondary piping of equipment; pipelines and valves installed in technical corridors can be either exposed or concealed.
Clean rooms are kept at constant temperature and humidity, but the production process requires various pipelines with different water temperature requirements. The temperature difference inside and outside the pipes may cause condensation on the pipe walls, affecting the indoor temperature and humidity. Therefore, anti-condensation measures should be taken for pipelines that may develop condensation.
The exterior surface of the anti-condensation layer can be made with galvanized iron or aluminum sheets, which are easy to clean and do not produce dust.
The production process in clean rooms typically involves ultra-fine processing or sterile, dust-free conditions, demanding stringent requirements for the water supply system, such as ultra-pure water for large-scale integrated circuits. Moreover, some water systems are costly to install and manage, necessitating the setup of systems tailored to different specifications (e.g., varying water quality requirements for pure water, different temperature and quality requirements for cooling water, etc.).
To ensure stringent system requirements and to facilitate management and cost savings in operations. The current production processes, mostly located in clean rooms, are in rapidly advancing high-tech industries such as large-scale integrated circuits. These production departments experience frequent product upgrades and changes in production processes. Therefore, ample allowance should be made in pipeline design.
