Inflection Point Engineering Scripts & Utilities

Crude Assay Cut Yield

Linear interpolation on a True Boiling Point (TBP) curve to report cut yields, cumulative yields, and volume-weighted density per cut. Enter the assay and cut endpoints (two CSVs below); optionally specify total charge in bbl/d for BPD yields.

Reference: API Technical Data Book Ch. 3; Gary / Handwerk / Kaiser, Petroleum Refining: Technology & Economics (Ch. 4). TBP→ASTM D86 conversion is not applied — use API TDB Procedure 3A1.2 for D86 equivalents. Yields are volumetric; multiply by average density to get weight yields.