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View Diary: What Exactly is in Dilbit? It is a Secret. (242 comments)

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  •  Nothing in the operation of pipelines of this (0+ / 0-)

    nature has it as "the dillbit is kept warm in order to keep
    it flowing."

    Pipeline operations do not involve adding heat to the material being transported other than the intrinsic heat of the material when it is first introduced to the pipeline.

    •  I'll look for my source and you can dispute them (2+ / 0-)
      Recommended by:
      Words In Action, elwior
      •  Pipeline company do NOT operate combustion units (1+ / 0-)
        Recommended by:

        along either conventional heavy sour crude or tar sands crude for the purposes of heating transported crude oil.

      •  Yes, dilbit pipelines are warmer (0+ / 0-)
        Swift [of National Resource Defence Council] also takes issue with CEPA’s claim that the typical temperature of a pipeline carrying dilbit is 17 to 40 °C and that the Keystone XL pipeline will operate at 26 to 48 °C. He says that public documents on TransCanada’s application for the Keystone 1 had a top range of 70 °C and those for the Keystone XL pipeline had an average operating temperature of 60 °C.

        This is a crucial issue because dilbit tends to be more viscous than conventional crude oil and that viscosity can lead to higher pipeline temperatures. Those higher operating temperatures have been linked to rises in both internal and external pipeline corrosion of the kind the National Transportation Safety Board (NTSB) found after 2010 the Kalamazoo River spill.

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