Accident Report Detail
Accident: 200033033 - Employees Chemically Burned By Leaking Dimethyl Sulfate Pipe
Accident: 200033033 -- Report ID: 0521700 -- Event Date: 06/20/2007 | |||||||
Inspection | Open Date | SIC | Establishment Name | ||||
---|---|---|---|---|---|---|---|
310177514 | 06/21/2007 | 2869 | Stepan Company | ||||
At 11:30 a.m. on June 20, 2007, Employees #1, #2, #3, and #4, who worked for Brand Scaffolding Company, and Employees #5, and #6, who worked for Atlantic Plant Services Company, and Employees #7 and #8, who worked for Stepan Company, a chemical manufacturer, were hospitalized after being exposed to dimethyl sulfate (DMS) in the ethoxylation area where it was used in reactors 4 and 5. Employee #7 was an operator who moved bags containing chemicals into the area in order to add it to reactor 4. Employee #8 was a mechanic that worked unplugging an auger at reactor 4. Employees #7 and #8 started working at 7 a.m. at reactor 4. Employees #1, #2, #3, and #4 dismantled a scaffold at a platform at the reactors. Employees #5 and #6 removed and installed new insulation on piping at a platform at the reactors. The host employer did not become aware that employees were exposed to DMS until about 2 p.m., when workers were discovered having chemical burns. Employees worked on a raised platform around the two reactors. In order to enter and leave the area, they walked along a path between two the reactors that was only 30 inches wide, and a pipe that contained DMS which ran overhead between the reactors. The piping system normally operated at 5 psi, but thermal expansion of DMS caused pressures over 300 psi and caused a valve on the overhead pipe to leak this extremely hazardous compound down onto employees that worked beneath the pipe. | |||||||
Keywords:
chemical reaction, chemical burn, pipe, chemical
| |||||||
Employee # | Inspection | Age | Sex | Degree | Nature | Occupation | |
1 | 310177514 | Non Hospitalized injury | Burn(Chemical) | Machinery maintenance occupations | |||
2 | 310177514 | Non Hospitalized injury | Burn(Chemical) | Machinery maintenance occupations | |||
3 | 310177514 | Non Hospitalized injury | Burn(Chemical) | Machinery maintenance occupations | |||
4 | 310177514 | Non Hospitalized injury | Burn(Chemical) | Machinery maintenance occupations | |||
5 | 310177514 | Non Hospitalized injury | Burn(Chemical) | Machinery maintenance occupations | |||
6 | 310177514 | Non Hospitalized injury | Burn(Chemical) | Machinery maintenance occupations | |||
7 | 310177514 | Non Hospitalized injury | Burn(Chemical) | Machinery maintenance occupations | |||
8 | 310177514 | Non Hospitalized injury | Burn(Chemical) | Machinery maintenance occupations |