The 2010 phosgene release at DuPont’s Belle, West Virginia facility—often confused with a separate 2010 fatal explosion in Buffalo, New York—is cited by the U.S. Chemical Safety Board (CSB) as a primary example of a shifting and deteriorating organizational safety culture.
Key organizational safety culture weaknesses exemplified by the incident include:
Normalization of Deviance: Management ignored recommended maintenance schedules. The phosgene hose that burst had been in service for seven months, despite internal requirements to replace it monthly.
Prioritization of Cost over Safety: Internal documents from as early as 1988 revealed that DuPont management rejected installing a safer secondary enclosure for phosgene because it was deemed too expensive, despite acknowledging it was the safest option for workers.
Failure to Learn from Near-Misses: The phosgene release was the third incident in a 33-hour window, following an undetected five-day methyl chloride leak and an oleum release. Management failed to halt operations or effectively investigate these preceding “warnings”.
Technical Knowledge Erosion: Investigators identified “corporate memory fade” as a contributing factor, where the retirement of experienced personnel led to a loss of site-specific knowledge that new hires were not adequately trained to replace.
Ineffective Hazard Recognition: Despite being warned in 1987 that the stainless steel hoses used were susceptible to corrosion from phosgene, DuPont continued to use them instead of safer alternatives.
For further details on these findings, you can review the full CSB Investigation Report.
