What is Mixed Sweet Blend crude?
Mixed Sweet Blend (MSW) is the benchmark conventionally produced light sweet crude for western Canada. It is often referenced on crude price reports as Edmonton Par Crude. It is a fully blended aggregate of many feeder streams and only begins its existence in blend tanks in Edmonton, Alberta.
Vapour Pressure Measurements
Traditionally, Reid Vapour Pressure (RVP, as measured using ASTM D323A) has been the standard for hydrocarbon volatility. Recent investigations have indicated that RVP may be understated relative to True Vapour Pressure (TVP, as measured by ASTM D6377). Mixed Sweet Blend samples are now being collected specifically for the purpose of D6377 True Vapour Pressure testing. The collection of reports is available here.
Enbridge Pooled Crude Quality Specification
Pooled crudes at Superior are subject to quality specifications set by Enbridge. Test methods employed, typical results, testing frequency, and mitigation/penalty details can be found from the most recent document available here. Contact Enbridge Pipelines directly for additional information regarding pooled crude quality requirements.