Executing Mega Linepipe Programmes

Executing Mega Linepipe Programmes examines large-scale linepipe supply as a continuity and control problem across repeated manufacturing, inspection, documentation and delivery states, rather than simply as a question of nominal mill capacity.

The paper develops an author-created Batch-to-Berth Control Architecture for long-duration linepipe programmes. The architecture connects eight control states: technical baseline, qualification-to-rate gate, material and campaign sequencing, repeatability signals, evidence-to-release flow, secondary-process throughput, shipment cadence, and deviation/change containment.

Its central proposition is that a mega linepipe programme succeeds only when accepted technical intent is preserved across repeated batches and shipments. As programme scale increases, so do the number of heats, shifts, inspection lots, coating batches, documentation packages, logistics interfaces and change events that must remain mutually consistent.

The paper uses the East African Crude Oil Pipeline (EACOP) as an attributed public case and supplements it with external manufacturer examples to reduce dependence on a single supplier source. Public references including API Specification 5L, ISO 3183, IOGP S-616 and API Specification Q1 provide the technical and procurement context. Manufacturer-specific performance claims are treated as company-reported unless independently corroborated.

The analysis emphasizes six practical disciplines for major programmes: establishing a controlled technical baseline, qualifying the manufacturing route before scaling, monitoring repeatability rather than only pass/fail outcomes, treating documentation as part of production output, synchronizing manufacturing with coating and logistics interfaces, and formally governing changes before they propagate into production.

The paper is intended for project owners, EPC contractors, procurement teams, package engineers, QA/QC professionals, manufacturing organizations and commercial teams involved in large or long-duration linepipe supply programmes. It is a manufacturer-neutral practitioner research framework based on publicly available information and does not constitute an engineering specification, supplier ranking or contractual recommendation.

Author-written abstract, reproduced from the authoritative Zenodo DOI record.