TRB Special Report 311: Effects of Diluted Bitumen on Crude Oil Transmission Pipelines (2013) / Chapter Skim
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Appendix A: Questionnaire to Pipeline Operators on Transporting Diluted Bitumen
Appendix A: Questionnaire to Pipeline Operators on Transporting Diluted Bitumen
Pages 108-114
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From page 108... ...
Percentage of barrels transported per day consisting of diluted bitumen: Operator A: 82 percent Operator B: 15 to 65 percent Operator C: 65 percent Operator D: 65 percent Operator E: 28 percent dilbit; 3 percent synbit 2. Please provide the following parameters on the properties of diluted bitumen measured at points of custody transfer or in-line (as appro priate and available)
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From page 109... ...
B 6.77 0.1–11.1 11.1 C <0.5 10 E <0.5 <0.5 Carbon dioxide (ppm) Not routinely measured in crude oil Oxygen (ppm)
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From page 110... ...
Three operators reported no differences. In two cases, dilbit batches did exceed specified limits more often than other crude oils by a small margin of between 0.1 and 0.3 percent.
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From page 111... ...
Standards and procedures are in place for control that are generic for all crude oil commodi ties shipped. The standards and procedures are structured to ensure safe operation regardless of the commodity.
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From page 112... ...
The operating philosophy and function of a pipeline drive pressure cycling, not the type of product transported. Batching between heavy and light products in the same pipeline may cause additional cycling; however, this is related to the switch in products rather than the prod ucts themselves.
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From page 113... ...
If so, note any differences in composition for pipelines in diluted bitumen service? Four of five operators complete testing of debris from pig cleaning, and no differences in composition have been reported for pipelines in dilbit service versus other heavy commodity pipelines.
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From page 114... ...
17. Note any differences in predictive/preventive maintenance prac tices for lines in dilbit service: No special predictive or preventive maintenance practices are required for dilbit pipelines.
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