Abstract: In the petrochemical sector, it is often considered that the internal floating roof tanks can reduce the incidence of fire in such tanks by reducing the volatilization of oil and gas because of the internal floating roof core component. However, there are still reports of fire accidents in practical applications. This paper analyzes the types, application characteristics and disadvantages and shortcomings of commonly used internal floating deck products in China, and provides an overview of common fire safety issues based on the installation, use and maintenance of internal floating decks. Based on this, it analyzes the main design ideas of various new internal floating deck products developed through structural design and optimization at the present stage. Meanwhile, it compares and summarizes the fire protection requirements and the current status of fire resistance testing standards for internal floating decks covered in domestic and international standards and specifications. Finally, the paper discusses the defects of the internal floating roof tanks used in the domestic petrochemical storage and transport sector at this stage, the differences in fire safety research on internal floating dicks at home and abroad, and the future development focus of this component product.

Key words: internal floating roof, product types, fire resistance, structural design