CSB considers CAI/Arnel explosion final investigation report
24 July 2008
The CSB has reviewed the final investigation report on the causes of the November 2006 explosion at the CAI/Arnel ink and paint manufacturing plant.
The report examines company work practices, state and local licensing and permitting procedures, and state and national fire codes for the safe handling and processing of flammable liquids.
CSB considers CAI/Arnel explosion final investigation report
On the night of November 22, 2006, a CAI mixing tank containing flammable heptane and alcohol solvents overheated, releasing vapour that filled the building and then ignited at about 2:45 a.m. The resulting explosion and fire destroyed the facility and created a blast wave that damaged or destroyed dozens of nearby homes and businesses in the Danversport neighbourhood. As CSB investigators noted at a May 2007 public meeting in Danvers, the building's ventilation system was routinely turned off at night, contributing to the accumulation of the flammable vapour.
The meeting included a detailed presentation by the CSB investigative team of the findings and conclusions from the agency's investigation. In preparing the final report, investigators examined the accident site; interviewed numerous company personnel, neighbours, and officials; conducted blast modelling and laboratory testing; and examined relevant federal, state, and local regulations and standards.
The investigation team presented new safety recommendations to prevent future accidents for consideration by the Board.
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