Concerns regarding the safety and environmental impact of large-scale chemical manufacturing facilities were also raised during this period . '' Silent Spring '' , published in 1962 , alerted its readers to the harmful effects of DDT , a potent insecticide . The 1974 Flixborough disaster in the United Kingdom resulted in 28 deaths , as well as damage to a chemical plant and three nearby villages . The 1984 Bhopal disaster in India resulted in almost 4,000 deaths . These incidents , along with other incidents , affected the reputation of the trade as industrial safety and environmental protection were given more focus . In response , the IChemE required safety to be part of every degree course that it accredited after 1982 . By the 1970s , legislation and monitoring agencies were instituted in various countries , such as France , Germany , and the United States
Bhopal disaster
Bhopal disaster
Chemical engineering