The CSB has released its second safety message in an occasional series focusing on the impacts  of chemical accidents  on people’s lives. The short video features Amy Gumbel, sister of Matt Gumbel - one of the workers fatally injured in the 2010 explosion and fire at the Tesoro Refinery in Anacortes, Washington.

The April 2010 fatal explosion and fire at the Tesoro refinery in Anacortes, Washington was caused by damage to the heat exchanger, a mechanism known as “high temperature hydrogen attack” or HTHA, which severely cracked and weakened carbon steel tubing leading to a rupture, according to a CSB draft report released today.