Toxic Gas

Published: | Updated: January 10, 2018

Definition - What does Toxic Gas mean?

Toxic gases (or noxious gases) are gases that are harmful to living things. They can easily build up in confined working spaces when the production process uses noxious gases. It may also result in the biological chemical breakdown of a substance that is being stored in a tank. Certain factory-related activities, such as welding, can also result in the build-up of toxic gases in a confined space.

Safeopedia explains Toxic Gas

The following toxic gases are the ones most commonly encountered in confined space work:

  • Hydrogen Sulfide – This is also known as sewer gas and has a smell like rotten eggs. However, exposure leads to a loss of smell, so a person might think that the gas is no longer present
  • Carbon Monoxide – A colorless, odorless gas that is produced when carbon-based fuels, such as wood or coal, are burnt
  • Solvents – Solvents like kerosene, paint stripper, and degreaser can cause problems with the central nervous system
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