Where must a diesel engine driven fire pump's fuel tank be located for areas subject...

The fuel tank for a diesel engine-driven fire pump must be located in the same room as the fire pump, especially in areas subject to freezing temperatures, to ensure that the diesel fuel remains at a usable temperature and the pump is readily available for operation during an emergency.

References: NFPA 20 provides the standards for the installation of stationary pumps for fire protection, including the requirements for diesel engine-driven pumps and their fuel supply.