PASADENA, Texas (AP) - A company is investigating what caused a chemical release at its Pasadena plant that forced neighbors to stay indoors for a couple of hours.
Air Products and Chemicals Inc. spokeswoman Beth Mentesana says the nitric acid unit remained closed Wednesday. She told The Associated Press, via e-mail, that the rest of the facility was "in full operation."
An orange cloud was seen above the city of Pasadena after Tuesday night's release, prompting emergency personnel to order a shelter-in-place.
The company says a pipe leak resulted in the formation and release of a nitric oxide vapor cloud. Air Products says there was no fire and nobody was hurt at the unit.
Pasadena Fire Department Chief Lanny Armstrong says some motorists who drove through the orange cloud called for help.
Air Products is based in Allentown, Pa.