CSB: Flash fire caused by U.S. Ink's failure to to test dust collection system
Seven workers were burned
The flash fire that burned seven workers, one seriously, at a U.S. Ink plant in New Jersey in 2012 resulted from the accumulation of combustible dust inside a poorly designed dust collection system that had been put into operation only four days before the accident, an investigation by the U.S. Chemical Safety Board (CSB) has found.
In a report released recently. the investigation team concludes that the system was so flawed it only took a day to accumulate enough combustible dust and hydrocarbons in the duct work to overheat, ignite spontaneously, cause an explosion in the rooftop dust collector, and send back a fiery flash that enveloped seven workers.