Protecting the desulphurization system with deflagration flame arresters suitable for temperature and pressure FA-CN, FA-CN-T alternatively FA-E (→ Volume 3)

Protecting the intermediate gasholder in the pressure and vacuum relief line with endurance burning proof deflagration flame arrester, end-of-line BE/HR (→ Volume 2), equipping the emergency vent stack with deflagration and endurance burning proof pressure relief valve P/EBR (→ Volume 7) and deflagration proof vacuum relief valve SV/E (→ Volume 7)

Ground flares, block-type thermal power stations, and diesel engine aggregates are potential sources of ignition for biogas (methane) air mixture. Suitable flame arresters must be installed in the pipe toward the system that consider temperature and pressure. Either temperature-monitored deflagration flame arresters FA-CN-T or FA-E-T (→ Volume 3) or - at a great distance from the potential ignition source - detonation flame arresters DA-SB or DR/ES (→ Volume 4) are used.