Sewer gas Sewer gas Sewer gas is a complex mixture of toxic and nontoxic gases produced and collected in sewage systems by the decomposition of organic household or industrial wastes, typical components of sewage. Sewer gases may include hydrogen sulfide, ammonia, methane, esters, carbon monoxide, sulfur dioxide and nitrogen oxides. Improper disposal of petroleum products such as gasoline and mineral spirits contribute to sewer gas hazards. Sewer gases are of concern due to their odor, health effects, and potential for creating fire or explosions. Sewer gas is typically restricted from entering buildings through plumbing traps that create a water seal at potential
2016 Baghdad gas plant attack Iraqi army. Three of the facility's gas storages were set alight, before security forces were able to bring the situation under control. Firefighters managed to control and extinguish a fire, caused by the explosions, and technicians examined the damage. The power station provided, with the help of others, that had halted operations, 153 megawatts to the already overstretched national grid before the attack. Eight policemen were among the casualties of the attack. 2016 Baghdad gas plant attack On 15 May 2016, a team of ISIL bombers assaulted a natural-gas plant north of Baghdad, Iraq, killing at least 14 people, eight