Tesoro announced recently that it has proactively begun replacing older rail cars in its crude oil rail car fleet with newer designed rail cars after evaluating rail car safety features.

It may not be alone- with several high publicity train derailments and accidents that have led to calls for less crude shipped via rail, companies are seeking to mitigate the fallout to avoid future mishaps.

According to a press release, Tesoro says it is committing that its rail car fleet will consist entirely of the newer DOT-111 design rail cars equipped with reinforced shields and relief devices by mid-2014.

"While this action applies to the vast majority of crude oil deliveries into Tesoro facilities, beginning in mid-2014 Tesoro will also make rail car design a part of its commercial considerations with all business partners who may ship crude oil into company-owned facilities. This includes Tesoro's refinery in Anacortes, Wash., and the proposed Tesoro-Savage Energy Distribution Terminal in Vancouver, Wash.," Tesoro said in a release.

The upgrades to Tesoro's rail car fleet will be completed before construction of the proposed Tesoro-Savage Energy Distribution Terminal would begin and before the terminal would start accepting crude oil deliveries. Because Tesoro is underpinning the initial capacity of the facility, many of the crude oil deliveries handled at the terminal at start-up will be owned by Tesoro and will arrive in Tesoro rail cars.