An upset in a unit at the Shell Martinez Refinery resulted in flaring of one of the refinery flares at about 7:55 a.m., and a Community Warning System (CWS) Level 1 was activated as a precaution.  There were no injuries and no off-site impact. A CWS Level 1 means there was no impact off-site

The community may have noticed additional noise from the flare activity as Shell personnel addressed this operational issue.  The flare is used as a safety device to assist in safely depressuring equipment in the event of a unit upset.

Normal refinery operations continue within the other operating areas. As always, we apologize for any impact we had.

Shell would like thank our outstanding personnel for their quick and comprehensive response to this incident