Which statement correctly describes the function of a safety relief valve in an LPG tank?

The function of a safety relief valve in an LPG tank is critical for maintaining safety in installations that utilize liquefied petroleum gas. The primary role of this valve is to release excess pressure that can build up within the tank. If the pressure exceeds a certain threshold, which could occur due to temperature increases or other factors, the safety relief valve opens to vent gas, thereby preventing potential rupture or explosion of the tank. This mechanism protects both the tank itself and the overall safety of the environment where the LPG is stored and used.

In contrast, controlling the flow of fuel pertains to valves that manage the distribution of gas rather than pressure management. Filtering contaminants from the fuel relates to systems designed to ensure purity in the gas supplied, which is separate from the function of a safety relief valve. Regulating the temperature of the tank typically involves different types of equipment, such as insulation or heating mechanisms, and is not the function of a safety relief valve. Thus, the correct understanding of the safety relief valve's role directly links it to pressure management, underscoring its vital importance in preventing dangerous situations.