Explosive gases kill 74 in China
February 26, 2009
An explosion in a Chinese coal mine has killed 74 people
. Coal mines, like underground valve vaults, sewers, and portions of some wastewater treatment plants
, are especially dangerous because they are confined spaces in which hazardous gases tend to accumulate. It is the persistent risk of explosion or asphyxiation in these sites that makes above-ground lift stations
vastly safer than their submersible alternatives. Every site -- industrial, municipal, agricultural, or commercial -- that houses hazardous and/or explosive gases like hydrogen sulfide, methane, and carbon monoxide needs toxic-gas detection equipment
to help ensure the safety of the people who work there.
last revised February 2009