Front-end removal of light components to reduce atmospheric-column vapor load and improve heat integration.
Crude preheating, flash separation, overhead condensation and controlled liquid transfer to the CDU furnace/column. The operating sequence, recycle paths, start-up/shutdown cases and normal/turndown behavior are defined before equipment finalization.
Preflash drum or column, overhead condenser, reflux drum, pumps, exchangers and control valves. Materials, design margins, maintainability, isolation, access, lifting and spare philosophy are coordinated with the approved operating cases.
Feed assay/composition, design capacity, operating pressure and temperature, product specifications, turndown, utilities, battery limits and site ambient conditions.
Simulation cases, vapor-load review, equipment sizing, PFD/P&ID, datasheets and control narrative. The package also includes line/equipment lists, relief and utility summaries, layouts or 3D interfaces, vendor-document requirements, inspection plans and commissioning inputs as applicable.
DCS regulatory control, critical interlocks, relief and depressuring, gas/fire detection, hazardous-area classification, HAZOP actions and applicable SIS/ESD functions.
CDU debottlenecking, light crude/condensate service and energy optimization. Capacity, product quality, consumption and emissions commitments are confirmed only after the representative feed and project Design Basis are approved.
API, ASME, TEMA and approved crude-assay Design Basis. The contractual code basis is selected by destination and client specification. ASME/API/TEMA, EN/DIN and GOST/EAC requirements are not mixed without an approved code-equivalency and authority review.
API, ASME, TEMA and approved crude-assay Design Basis.