According to a timeline of the Enbridge oil spill released by Rep. Mark Schauer (D-Battle Creek) the pipeline company repeatedly stopped and started its 6B line after noticing spikes in pipeline pressure readings.
Noel Griese, editor of Energy Pipeline News, says he believes that this repeated restarting of the pipeline caused the spill to become much worse than it otherwise would have been.
With a five-foot rupture gash in the pipe at the 3 o’clock position in the trench, if the pipe was shut down when the controllers saw a pressure drop in the hydraulic nomographs, it should have spilled far less than 19,500 bbls. in my opinion. It’s obvious that the reason the spill was about five times bigger than it should have been is because the controllers repeatedly restarted the line the next day. That’s a training problem – in my opinion.
Griese, who has 20 years of experience in the petroleum pipeline industry, offered these opinions after reporting on the oil spill timeline for Energy Pipeline News.