3 December 1984, more than 40 tons of methyl isocyanate gas leaked from a pesticide plant in Bhopal, India, immediately killing at least 3,800 people and causing significant morbidity and premature death for many thousands more. Watch A Prayer for Rain
On 6 July 1988, there was a massive leakage of gas condensate on Piper Alpha, which was ignited causing an explosion which led to large oil fires. The heat ruptured the riser of a gas pipeline from another installation. This produced a further massive explosion and fireball that engulfed the Piper Alpha platform. Spiral to Disaster
The Chernobyl accident in 1986 was the result of a flawed reactor design that was operated with inadequately trained personnel. The resulting steam explosion and fires released at least 5% of the radioactive reactor core into the environment, with the deposition of radioactive materials in many parts of Europe. Read more
July 7, 2011— A series of preventable safety shortcomings — including failure to maintain the mechanical integrity of a critical phosgene hose — led to a string of three serious accidents that occurred over a 33-hour period on January 22 and 23, 2010, at the DuPont Corporation’s Belle, West Virginia, chemical manufacturing plant, according to the draft report of the U.S. Chemical Safety Board (CSB) which was issued today. In one of the accidents, a worker died following exposure to phosgene, a gas used as a chemical weapon in World War I. Read full Investigation from CSB