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CSB Investigation
Report No. CSB-FREEDOM-2017
2017
Environmental Environmental Toxic release Toxic
Freedom Industries 化学品释放
Freedom Industries, Charleston, West Virginia
Related equipment → Storage tank (storage_tank)
0Fatalities
0Injuries
LeakageMechanism code ELP
⌗Failure Mode · ISO 14224 Mapping
Damage mechanism (recorded in KB)
LeakageELP
ISO functional code (as recorded)
ISO 14224:2016 functional failure code
ELP · External leakage - process
ISO ELP — External leakage - process.
1What Happened
储罐泄漏污染供水，数十万居民无水可用
2Root Cause
老旧储罐腐蚀泄漏，围堰/二次 containment 不足
3Reliability Lessons (from investigation root cause)
- The 'Root Cause' above is the core lesson of this accident; not split further.
4Associated Failure Mechanisms (Keywords)
储罐 泄漏 供水污染 MCHM 腐蚀
About the Failure-Mode Code (click to expand)
The recorded code ELP 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：U.S. Chemical Safety and Hazard Investigation Board (CSB)
Official Report：www.csb.gov ↗
Data Verification：verified_url_csb_investigations_list_2026-08-07（终报 2017-05-11）
↗Related Failure Modes · Traceability