Barrels per calendar day
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Barrels per calendar day (bc/d or bcd) is a standard petroleum downstream industry measurement of actual refinery throughput, as opposed to designed capacity. BCD is computed by dividing the number of refined barrels of oil processed by the actual number of days the refinery was in operation. Compare to the term barrels per day (bpd, b/d, or bbl/d), which the standard upstream industry measurement of the production rate of oil fields, pipelines, and transportation.