And you also have to maintain and repair your pipeline. Most of the
resistance to the Keystone XL comes from the history (rather bad,
actually) of the owners. They are notorious for large leaks and poor
maintenance along with slow and inadequate response to problems in
their existing lines, and I think are responsible for the failure due
to poor maintenance of the last two very large spills from pipelines.
Even with that pipelines are better than derailing trains with
exploding tanker cars. It appears that the new design is just as
prone to failure as the old "inadequate" one when you start tossing
them around. Tar sands crude requires significant thinning with
volatile solvents to move in any way, it is much MORE viscous when
"extracted" than road tar. This makes it worse than ordinary crude.
Peter
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