![]() Another piece – a vessel fragment weighing over 8,000 pounds – tore through a wall at the facility, skipped across a neighboring parking lot and struck the wall of an automotive supply company where 70 people were working but only one was injured.ĬSB Chairperson Rafael Moure-Eraso said, “Over the years, NDK ignored safety recommendations and warnings that it should regularly inspect the interior walls of the vessels. One piece of steel from the building was blown 650 feet, striking the driver who was walking back to his vehicle. CSB videos may be viewed at or The violent rupture occurred in the Number 2 vessel which was growing synthetic quartz crystals at extremely high pressure and temperature. The CSB also scheduled for release a safety video on the accident entitled “Falling through the Cracks,” which utilizes a computer animation to depict the sequence of events and investigation findings. The report – a CSB Case Study – was scheduled for presentation before the board prior to a vote adopting its contents and safety recommendations. Chemical Safety Board (CSB) and set for consideration at a public meeting to be held in Rockford, Illinois, today, a few miles from the facility. The findings were released in a draft investigation report from the U.S. Rockford, Illinois, November 14, 2013-An explosion which occurred December 7, 2009, at the NDK Crystal manufacturing company in Belvidere, Illinois, fatally injuring a truck driver at a nearby gas station on the Illinois Tollway, resulted from corrosion in the walls of a pressure vessel, which went uninspected for years. CSB Finds Fatal 2009 NDK Explosion Resulted from Stress Corrosion Cracking of High-Pressure Vessel Crystal Maker Failed to Inspect or Test Vessels and to Heed Earlier Warning about Risk to Public
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