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CSB Investigation
Report No. CSB-LOYLANGE-2022
2022
Explosion Explosion
Loy Lange Box 压力容器爆炸
Loy Lange Box Company, St. Louis, Missouri
Related equipment → 压力容器/缓冲罐/分液罐/闪蒸罐 (Pressure Vessel) (压力容器/缓冲罐/分液罐/闪蒸罐 (Pressure Vessel))
1Fatalities
1Injuries
ExplosionMechanism code EXP
⌗Failure Mode · ISO 14224 Mapping
Damage mechanism (recorded in KB)
ExplosionEXP
Internal damage-mechanism code (not ISO 14224)
ISO 14224:2016 functional failure code
OTH · Other
Mapped to ISO OTH — Other.
1What Happened
蒸汽容器爆炸，约 2000 磅钢制容器飞出，1 死 1 重伤
2Root Cause
蒸汽容器完整性/超压保护不足
3Reliability Lessons (from investigation root cause)
- The 'Root Cause' above is the core lesson of this accident; not split further.
4Associated Failure Mechanisms (Keywords)
蒸汽 压力容器 爆炸 超压 飞出
About the Failure-Mode Code (click to expand)
The mechanism code EXP shown on this card is the KB's internal damage-mechanism abbreviation (not an ISO 14224 code); it describes how the equipment failed. The 'ISO 14224 Mapping' block above maps it to the correct ISO functional failure code (which describes what the equipment failed to do) — these are two distinct dimensions in ISO 14224. The mechanism follows the narrative in the card body.
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 2022-07-29）
↗Related Failure Modes · Traceability
This accident is not yet linked to a specific FM traceability card.