Equipment list

The equipment list enumerates the plant's engineered items — vessels, exchangers, pumps, compressors, packages — one row per tag, with the identifying and sizing data that lets every discipline and function find its workload in the list: mechanical engineers their datasheets to produce, procurement its requisitions, civil its foundations, electrical its loads. It is typically the first structured deliverable of a project and the spine that other registers hang from.

Like the line list, it is a curated redundancy: its contents overlap the P&IDs, the datasheets and the model, and its accuracy is a maintenance discipline rather than a property. The characteristic failures are lifecycle ones — items added on P&IDs but never listed, deleted items surviving in the list and getting foundations designed for them, and duplicate or drifting entries where units were renumbered. The list is also where scope quietly grows: watching its row count and total duty over time is one of the simplest health metrics a project has.