Can prefabricated buildings be used in chemical industry facilities?

1. Prefabricated buildings facilitate construction in winter. The components required for prefabricated buildings are generally produced in factory workshops, without being restricted by seasons. The components are assembled on-site, which reduces the workload and the amount of wet work required on site. This is particularly advantageous for construction in winter, as it solves the problems associated with construction during winter in northern regions. Moreover, the construction period is shortened, labor and resources are saved, construction costs are reduced, and work efficiency is improved. 2. Prefabricated buildings have high seismic resistance, good fire resistance, and excellent sound insulation. The materials used in prefabricated buildings are lighter in weight per unit volume compared to those used in traditional buildings, resulting in a lower self-weight of the structures. Moreover, most of the components are connected into a single unit, which enhances the flexibility of the prefabricated structures and improves their seismic resistance. Insulating materials are placed between the walls of prefabricated buildings; even in the event of a fire, these materials prevent direct contact with the external flame source, making it very difficult for them to catch fire. As a result, their fire resistance rating can reach **Grade A standards**, and they are considered non-combustible materials that meet the requirements regarding a building’s fire resistance ； The sound insulation level of prefabricated building components is greater than 50 dB(A), meeting the sound insulation requirements for buildings ； It can provide a good working and production environment both indoors and outdoors. 3. Prefabricated buildings have excellent thermal insulation properties, which enables energy savings. Since the insulation materials for prefabricated buildings are placed in the middle of the walls, and these materials themselves meet the insulation requirements of the building’s envelope, this results in a significant reduction in energy consumption for indoor heating. It is the low thermal conductivity of prefabricated building components that enables them to meet the requirements for insulation of building walls. It prevents the formation of heat bridges; with insulation of the same thickness, heat loss is reduced by about 1/5, thus saving thermal energy. Thanks to the high heat capacity within the wall, more heat can be stored inside, which helps to slow down changes in indoor temperature and keeps it more stable – providing warmth in winter and coolness in summer for a more comfortable living environment. 4. Defects in prefabricated buildings are reduced, and accuracy is **improved**. Prefabricated buildings utilize an industrialized construction method; the majority of their components are produced on factory assembly lines, going through processes such as casting, shaping, and curing. Once these precisely manufactured components are ready, they can be assembled on-site to complete the building. Reinforcing bars are mechanically processed and shaped in factories, and manual inspection is carried out to ensure compliance with size standards ； Install the composite steel formwork according to the precise string lines. Reinforcement bars, water and electricity pipelines, as well as various embedded components are placed into the formwork, and a manual inspection of these embedded elements is carried out. Concrete prepared according to the standard mix ratio is then poured into the steel formwork, and tests are conducted on the strength of the concrete to ensure that it meets quality requirements. Then the concrete wall is cured, and the formwork is removed once the strength meets the requirements. By transporting components to the site for assembly in this way, the precision of the built structure is more than twice that of traditional construction methods; the accuracy error is measured in millimeters, allowing houses to be built with the same precision as cars are manufactured. As can be seen from the above, prefabricated buildings are widely used and can be applied in the aforementioned scenarios!

It depends on whether these building materials can meet certain safety requirements such as fire resistance levels~~

As for fire resistance, it can be addressed through the materials used, since it is still reinforced concrete

The third-generation technology in the nuclear power industry has achieved modular prefabricated construction.

I’m not familiar with nuclear power. The structural frameworks of petrochemical industries come in various forms, with many different heights, spans, and column arrangements. If modular construction is used, the production costs are very high, and the advantages of factory-based prefabrication are not utilized.