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
2014 Kaohsiung gas explosions the area looking for survivors. Heavy construction equipment was brought to the blast site to begin removing debris from the street. Schools and offices were closed on that day and residents were asked to leave their houses to smooth out the search and rescue operations. By afternoon, hundreds of people who fled the explosion scenes had returned home after houses around the explosion areas had been declared safe by the city spokesman. They confirmed that no more explosions could happen and that all of the fire had been put out. Traffic restrictions were put in place on Sanduo, Guanghua, Yixin,