Giant crane collapse at Exxon Mobil refinery: Three hurt in Torrance

The 300-ton crane was being used in the operational portion of the refinery, on 190th Street near Crenshaw.

The controversial refinery scheduled to be sold to PBF refining, which bought it for $537.5 million previous year. Despite Monday's incident, the sale is still expected to be finalized this summer, according to an ExxonMobil statement.

Spitler also said operations at the refinery were normal following the crane's collapse at about 9:30 a.m. PDT (1630 GMT) on Monday. Within two hours, the incident was described as "static" and firefighters left. Such burn-offs, or flares, can be triggered by an unexpected stoppage in refinery operations or mechanical failures, among other things.

"Initially, some flammable gas was suppressed by water monitors". The injured workers did not require hospital treatment.

The Torrance Fire Department conducted flaring - the burning of natural gas that can not be processed or sold - to safely stabilize operations, officials said. They are used to reduce the toxicity of chemicals released into the air during petroleum refining.

Federal authorities blamed a breakdown in safety procedures for causing the 2015 explosion.

The refinery recommenced operations May 10, 2016, over a year after the explosion.