The order came after PHMSA concluded its investigation of a November 2015 accident at the Sunoco-owned West Texas Gulf Pipeline Company's Wortham (Texas) facility that injured several workers.
The NOPV identifies two probable violations of Federal pipeline safety regulations, including failing to have a formal written procedure for the operation and maintenance of the 10 in. flow control valve involved in the accident, and failing to follow a written plan to ensure isolation of all energy sources prior to the start of work on the day the incident occurred.
