04 October 2006 21:49 [Source: ICIS news]
HOUSTON (ICIS news)--Valero said on Wednesday afternoon that employees at its 130,000 bbl/day Houston refinery had returned to work following a sulphur dioxide (SO2) gas release from a sulfuric acid tank this morning.
Valero said in a statement that first aid was administered to 27 individuals who were potentially exposed to SO2 . Although they were in good condition, those affected were taken to a hospital for further observation.
It said there was no sulphuric acid spill, as it had originally reported.
The company had urged nearby residents to stay indoors or go to shelters, but those warnings were lifted after no SO2 gas was deteted in nearby air.
Valero had shut in the refinery on Wednesday for 40 days of maintenance.
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