What Long-Lead Procurement Really Decides on Large Projects
On large builds the completion date is usually settled months before the first pour — inside the procurement schedule rather than on the site programme.
The items that set the date
Every large project has a short list of packages that no amount of site productivity can compensate for: power transformers, medium and high-voltage switchgear, chillers, lifts, unitised façade panels, large-diameter valves and bespoke structural steel.
Lead times on transformers and HV switchgear have not returned to their pre-2021 norms. Twelve to eighteen months is again common, and the factory slots for the following year are frequently sold before the current year's projects have finished tendering.
Ordering early is not the same as ordering well
An early order placed against an unfrozen specification produces change orders, restocking charges, and a delivery slot that has to be bought twice. The saving evaporates and the schedule is worse than if nothing had been ordered at all.
The discipline that works is to freeze the technical schedule for the long-lead packages first, accepting that the rest of the design will still be moving. That means deciding ratings, footprints and interface points early, and holding them.
Two suppliers, one slot
Dual-sourcing costs money and is regularly worth it on single-point-of-failure items, because the alternative is a project whose completion depends on one factory's order book staying stable for a year.
Where a second source genuinely does not exist, the practical move is to buy the production slot itself with a deposit and treat the slot as the deliverable, with milestone inspections at the factory rather than a delivery date on a spreadsheet.
Logistics is part of the price
Port congestion, oversize road permits, escorted night moves, crane availability and site access windows all sit between the ex-works price and the item standing in its final position. On a Gulf project the factory price of a large module can be a minority of the delivered cost.
Procurement decisions taken in month two are still visible in month thirty. Contingency built into the schedule is consistently cheaper than expediting fees, air freight and acceleration claims.
This article is general industry commentary published for information purposes only. It does not describe services offered by Silex EPC and should not be relied upon as professional advice for any specific project.
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