April 2019

Environment and Safety

A cost-effective approach to monitoring dangerous hydrogen sulfide gas

Hydrogen sulfide gas (H2S) is one of the most common hazards in the oil and gas industry.

Hernandez, J., Emerson Automation Solutions

Hydrogen sulfide gas (H2S) is one of the most common hazards in the oil and gas industry. H2S is colorless, flammable and extremely toxic. The gas can accumulate in any area where oil or natural gas is processed, stored or transported, and exposure can have severe implications. The safety ranges for H2S, in parts per million (ppm), are:  5 ppm–10 ppm: Relatively minor metabolic changes  100 ppm: Immediately dangerous to life and health  100 ppm–1,000 ppm: Serious respiratory, central nervous and cardiovascular system effect  1,000 ppm–2,000 ppm: Loss of consciousness and possible death.  In 2016, the Denver Post reported a story in which several oil and gas industry workers, who had

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