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CSB Investigation
Report No. CSB-DIDION-2023
2023
Explosion Explosion Fire Fire
Didion Milling 可燃粉尘爆炸火灾
Didion Milling, Cambria, Wisconsin
Related equipment → Fan / Blower (fan_blower)
5Fatalities
14Injuries
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
2017-05-31 玉米磨粉可燃粉尘爆炸，5 死 14 伤
2Root Cause
可燃粉尘防爆（NFPA 652/61）执行缺陷（跨行业映射至通风/粉尘系统）
3Reliability Lessons (from investigation root cause)
- The 'Root Cause' above is the core lesson of this accident; not split further.
4Associated Failure Mechanisms (Keywords)
可燃粉尘 粉尘爆炸 磨粉 通风 点火源
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 2023-12-06）
↗Related Failure Modes · Traceability
This accident is not yet linked to a specific FM traceability card.