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Man-made Disasters & Their Mitigation

Industrial and chemical accidents, fires, nuclear and radiological emergencies, building collapse, transport accidents, stampedes, oil spills and biological emergencies — major Indian cases (Bhopal 1984 and others), their causes and the legal, technical and community measures that prevent or reduce them.

Man-made Disasters & Their Mitigation
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📑 Contents (3 sections)

Last reviewed 4 Nov 2026 · 2 min read

1. Types

Type Examples
Industrial / chemical Gas leaks, explosions, toxic releases — Bhopal gas tragedy (2–3 December 1984), methyl isocyanate from the Union Carbide plant; LG Polymers styrene leak, Visakhapatnam (May 2020)
Fire Factory, hospital, high-rise and forest fires
Nuclear and radiological Reactor accidents (Chernobyl 1986, Fukushima 2011), loss of radioactive sources (Mayapuri, Delhi, 2010)
Structural collapse Buildings, bridges, dams
Transport accidents Rail, road, air and shipping accidents
Stampedes At religious gatherings and events
Oil spills Tanker or pipeline accidents at sea
Biological Epidemics, pandemics (COVID-19), bioterrorism
Terrorism and conflict Bomb blasts, armed attacks

2. Common causes

  • Poor design, maintenance and safety culture; ignoring standard operating procedures.
  • Hazardous industries located near dense settlements.
  • Violation of building codes and fire norms; overcrowding.
  • Lack of on-site and off-site emergency plans and public awareness.

3. Mitigation measures

Area Measures
Legal Environment (Protection) Act 1986 (passed after Bhopal); Manufacture, Storage and Import of Hazardous Chemical Rules, 1989; Chemical Accidents (Emergency Planning, Preparedness and Response) Rules, 1996; Public Liability Insurance Act, 1991; Factories Act (hazardous processes); Atomic Energy Act and AERB regulation
Technical Safe plant design, hazard and operability studies (HAZOP), quantitative risk assessment, safety audits, gas detectors, automatic shutdown, fire-fighting systems
Land-use Buffer zones around hazardous units; safe siting
Planning On-site emergency plan (by the occupier) and off-site emergency plan (by the district authority); mock drills
Building safety National Building Code fire provisions, structural audits, licensed engineers
Crowd management NDMA guidelines for events and places of mass gathering — entry/exit control, barricades, communication
Community Awareness, warning sirens, evacuation routes, trained volunteers (Aapda Mitra)
Exam TipBhopal and the law

The Bhopal disaster led directly to the Environment (Protection) Act, 1986, the Public Liability Insurance Act, 1991 and the "absolute liability" principle laid down by the Supreme Court in the Oleum gas leak case (M. C. Mehta v. Union of India, 1986).

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