A floating chemical tank roof collapsed at LyondellBasell’s refinery in Houston, causing the release of carbon disulphide, dimethyl disulphide and methyl ethyl disulphide.
In a statement, LyondellBasell said that the roof had failed due to heavy rain. A pungent, garlic-like smell was reported by local residents on July 14, 2021, but no company claimed responsibility.
Harris County Pollution Control Services (PCS) said on July 16, 2021 that it had identified LyondellBasell’s Houston refinery as the potential source of the disulphide compounds it had identified. PCS said that the compounds could cause irritation of the respiratory and digestive systems and advised residents to limit outdoor time and use face coverings.
LyondellBasell later posted on a public forum that its workers were addressing the odour problem and said that it posed no harm. A spokesperson said the company was not aware that the release was affecting residents, which is why it had not issued a community alert at the time. It added that the leak had been contained and the clean-up was complete.
For more information visit www.lyondellbasell.com
