India's worst gas leak: over 570,000 people poisoned and killed; 200,000 left permanently disabled

Under this guiding philosophy, it is easy to imagine that the company’s occupational safety measures and equipment were inevitably neglected. Storage tanks—including those holding methyl isocyanate and other toxic chemicals—had long been deteriorating and poorly maintained; an accident was thus only a matter of time. By the early 1980s, due to aging equipment and insufficient worker safety training, the company began experiencing frequent problems. In 1981, a pipeline maintenance worker was exposed to a methyl isocyanate leak while working inside a pipe. In panic, he mistakenly removed his protective face mask and inhaled large quantities of toxic gas, dying three days later. In January 1982, phosgene leaked, poisoning 24 workers who had worn no protective gear whatsoever; all were hospitalized. In February 1982, another methyl isocyanate leak hospitalized 18 workers. In August 1982, a chemical engineer accidentally contacted liquid methyl isocyanate, suffering severe chemical burns covering over 30% of his body. In October 1982, methyl isocyanate leaked again. While attempting to stop the leak, the plant’s methyl isocyanate production supervisor sustained serious chemical burns; two other workers suffered heavy toxic exposure and required immediate hospitalization. Between 1983 and 1984, the factory continued to experience repeated small-scale leaks of methyl isocyanate, chlorine, monomethylamine, phosgene, and carbon tetrachloride. The defunct UCIL plant Yet these recurring safety incidents failed to awaken management. The company learned no lessons and implemented no measures to strengthen hazardous chemical management—ultimately culminating in a catastrophic disaster. All methyl isocyanate was stored underground in three tanks: E610, E611, and E619. In October 1984, Tank E610 malfunctioned, rendering its methyl isocyanate unpumpable; the tank was consequently taken offline. Late on the night of December 2, operator error during maintenance caused a large volume of water to enter Tank E610. The ruptured E610 tank Water reacted exothermically with methyl isocyanate, converting it into gaseous form and causing internal pressure to surge dramatically—eventually rupturing the tank. Forty-two tons of methyl isocyanate gas immediately escaped into the atmosphere. Carried by southeasterly winds, the toxic cloud drifted directly toward Bhopal city. On December 3, the plant’s internal alarm sounded upon detection of the gas leak—but was quickly silenced manually. Company policy forbade sounding alarms for minor leaks to avoid causing public panic. At that point, management still did not grasp the severity of the incident—but chose to silence the alarm anyway. A deceased child Although the plant promptly shut down Tank E610 and evacuated its workers, the released gas could not be retrieved. Within half an hour, numerous residents of Bhopal began arriving at local hospitals suffering from acute poisoning. Initially, doctors diagnosed the cases as ammonia poisoning; later, they suspected phosgene poisoning.

Review of past workplace injury incidents at the factory and their resolution measures

b. The factory submitted an application report to the traffic police department, planned appropriate speed bumps and isolation barriers, and assigned security personnel to maintain order at the factory gates during employee shift changes. 2. Accidental ingestion of chemical agent ① Incident summary: During the afternoon shift, male employee B accidentally ingested thinner (a solvent). He immediately reported the incident to his supervisor, and the factory arranged transport to send him directly to hospital for gastric lavage and emergency treatment. ② Root causes: a. Employee B violated factory regulations by reporting to work under the influence of alcohol; his supervisor also failed to adequately supervise subordinates. b. Although the factory explicitly mandated that all chemicals must be stored exclusively in standardized containers bearing clear labels, the printing workshop continued using repurposed plastic water bottles. ③ Resolution: a. Medical expenses for B’s hospitalization were jointly covered by the occupational injury insurance fund and factory finances; additionally, the factory subsidized his regular wages throughout his hospital stay. b. First, both B and his supervisor were fined for violating operating procedures; second, the incident was announced company-wide; third, dedicated staff were assigned to conduct routine safety inspections. 3. Finger severed by circular saw ① Incident summary: During normal working hours, male employee C had his finger severed by a circular saw. His department supervisor immediately retrieved the severed finger and arranged for factory transportation to the hospital. ② Root cause: a. Wearing protective gloves was mandatory at circular saw stations; however, C deemed the metal-mesh gloves cumbersome and inconvenient, and thus operated the machine without them—resulting in the injury. ③ Resolution: a. As in the previous case. b. The factory invested substantial funds to custom-design new steel-wire mesh gloves offering improved dexterity and comfort, encouraging voluntary and consistent use by employees. 4. Head injury from sheet-metal cabinet ① Incident summary: An office staff member, while crouching beneath a sheet-metal filing cabinet to retrieve documents, stood up and struck his head on the sharp corner of an open upper cabinet door—causing a large laceration. ② Resolution: a. As in the previous case. b. The factory immediately phased out all such sheet-metal cabinets and procured safer, redesigned alternatives. 5. Occupational injury handling procedure ① Occupational injury insurance must be fully enrolled for every newly hired employee immediately upon commencement of employment.

India's Cohance Lifesciences manufacturing site shut after worker dies in accident

19 hours ago

India's Cohance Lifesciences had its Suryapet manufacturing site ordered closed by the state pollution control board following a fatal industrial accident. The company has initiated corrective measures and expects to submit compliance documents to resume operations promptly.

reuters

2026-11-05

India's Cohance Lifesciences manufacturing site shut after worker dies in accident

India's Cohance Lifesciences manufacturing site shut after worker dies in accident

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