How do you purge a diesel tank?

To purge a diesel tank, first ensure safety by turning off all power sources and using proper personal protective equipment. Drain the diesel fuel from the tank completely, using a pump or siphon, and then remove any remaining residue by rinsing the tank with a compatible cleaning solvent. After thorough rinsing, allow the tank to dry completely before refilling with fresh diesel. Finally, check for leaks and ensure all connections are secure before putting the tank back into service.