Diesel and electric fire pumps are the two primary types of fire pumps used in fire protection systems, each with its own advantages and considerations. Diesel fire pumps are powered by internal combustion engines and are typically used in locations where a reliable electric power supply is not available or where redundancy is needed to ensure continuous operation during a power outage. Diesel pumps are known for their reliability and ability to operate independently of the electric grid, but they require regular maintenance of the engine and fuel system, including fuel storage and periodic testing.