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HSE
Report No. HSE-BHOPAL-1984
1984
Toxic release Toxic
Union Carbide Bhopal MIC 储罐安全阀起跳大量释放（1984，数千死伤）
Union Carbide India Ltd, Bhopal, India (HSE Sragtech Case)
Related equipment → Storage tank (storage_tank)
2000Fatalities
200000Injuries
FailureMechanism code OTH
⌗Failure Mode · ISO 14224 Mapping
Damage mechanism (recorded in KB)
FailureOTH
ISO functional code (as recorded)
ISO 14224:2016 functional failure code
OTH · Other
ISO OTH — Other.
1What Happened
MIC 储罐因水侵入发生放热反应→储罐压力升高、安全阀起跳→甲基异氰酸酯(MIC)大量释放并漂移入户区，造成史上最严重工业事故
2Root Cause
火炬系统停用 3 月；未识别储罐内失控反应；制冷系统停用使温度高于设计；修改/维护差；应急无效、医院不知何种气体
3Reliability Lessons (from investigation root cause)
- The 'Root Cause' above is the core lesson of this accident; not split further.
4Associated Failure Mechanisms (Keywords)
MIC 甲基异氰酸酯 储罐 安全阀 水侵入 放热反应 泄漏 洗涤塔停用 制冷停用
About the Failure-Mode Code (click to expand)
The recorded code OTH is an ISO 14224:2016 functional failure code (describes what the equipment failed to do). The damage mechanism (how it failed) is shown in the Mapping block above. The two are distinct dimensions in ISO 14224.
5Evidence Source (transparent)
Authority：Health and Safety Executive (HSE), UK — Sragtech Case Study
Official Report：www.hse.gov.uk ↗
Data Verification：verified_url_hse_2026-08-07
↗Related Failure Modes · Traceability
This accident is not yet linked to a specific FM traceability card.