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Chemical Safety Board probe into KMCO explosion, fire focuses on ruptured piping (Industrial Fire World)

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A ruptured filtration filter is the focus of a U.S. Chemical Safety Board investigation into an explosion and fire at a Texas chemical plant in April that killed one person and injured 30 others, an update issued this week states. On April 2, 2019, the operational staff at the KMCO facility in Crosby, TX, was engaged in making a batch of sulfurized isobutylene. Sometime later an operator walking by the sulfurized isobutylene batch reactor heard a loud “pop” followed by a loud whooshing noise similar to “an air hose coming off.” Investigating further the operator described a white cloud of vapor hovering near the ground with three or four feet of wavy, hazy vapor above it. An immediate evacuation order was issued via the plant radio system. Approximately four minutes later the isobutylene vapor cloud exploded. After the blast, with a hole roughly three inches by 5.5 inches was found in… industrialfireworld.com/news/csb-probe-into-kmco-explosion-fire-focuses-on-ruptured-piping