Aug 07, 2009
Washington DC, August 7, 2009 – A four-member investigative team from the U.S. Chemical Safety Board (CSB) is deploying to the site of a release of propane and hydrogen fluoride at the ExxonMobil refinery in Joliet, Illinois. At approximately 12:30 p.m. on Thursday, there was a sudden release of propane and hydrogen fluoride (HF) from the vicinity of a pump in the refinery’s alkylation unit, which uses HF as a catalyst. The leak did not ignite, but one operator was transported to the hospital suffering from what were described as serious, HF-related chemical burns; he was initially reported in critical condition. A second operator was examined at the hospital and released. The unit’s water deluge system, which is designed to contain airborne HF releases, was activated and the alkylation unit was shut down. Refinery personnel were instructed to shelter in place.
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