sewer gas


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sew·er gas

gas, probably mostly methane, resulting from decomposition of organic matter in sewers; potentially explosive and toxic.

sewer gas

A gas that is produced by decaying matter in sewage and contains methane and hydrogen sulfide. It is toxic, usually flammable, explosive, and may be used for fuel.
See also: gas
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References in periodicals archive ?
These traps hold a small amount of water that blocks sewer gas in the drain line and prevents it from entering the house.
Seven sewer gas lamps in Monkseaton and Whitley Bay, dating between 1900 and 1910, are to be preserved.
The WHO environmental team verified, through odor detection and smoke tests, that sewer gas and aerosolized droplets were being drawn into the bathrooms from the plumbing system, with sewer gas velocity and droplet volume in direct proportion to fan power.
The Coroner said that as the question had arisen whether this man died from coal gas poisoning or sewer gas poisoning he would, if the Court thought fit, have the inquest adjourned for a post mortem.
Even worse, vacuum can suck all the water out of traps, allowing sewer gas to flow freely into your home.
Sewer gas lamps, a horse trough and post boxes are among the unusual structures classed as top landmarks.
If the floor drain hasn't been used in a long time, the water in the trap can evaporate and allow sewer gas into the house.
Under every drain in your house, there's a trap that holds water and prevents sewer gas from flowing up into the air you breathe.
If it's too fast, suction siphons water from the P-trap (see photo), allowing harmful sewer gas to enter your home.
This may sound harmless enough, but a dry trap can cause a room to fill with potentially harmful sewer gas from the septic tank or the city sewer system.
That would allow sewer gas to come up through the drain into the room.
The Village, in conjunction with their consulting engineer Robinson Engineering, realized the existing manhole, originally installed in 1984, was deteriorating at a rapid rate due to extreme sewer gas buildup.