A seven-member investigative team from the US Chemical
Safety Board (CSB) is deploying to the scene of an explosion
and fire that occurred Monday at the Chevron refinery in Richmond,
The team will be headed by Donald Holmstrom, director of the
CSBs Western Regional Office in Denver, Colorado, and is
expected to begin work Wednesday.
Board member Mark Griffon will accompany the team.
The explosion and fire involved the release of vapor that
found an ignition source, the CSB said, citing Chevron
Four workers sustained minor injuries and several thousand
members of the public were ordered to shelter in place, the CSB
CSB investigations examine a wide range of safety
issues such as effective process safety management and
mechanical integrity, said CSB chairman Rafael
Our mission is to improve the safety of workers and
The CSB is an independent US federal agency charged with
investigating serious chemical accidents.