Most owners bring an independent engineer in at detailed design — after the big money is already committed. The leverage is earlier.
“The cheapest change order is the one made before the contract is signed.”
Scope discipline
Before FEED, scope is still cheap to change. An owner’s engineer who has delivered similar plants will find the missing battery limits, the utilities nobody sized, and the interfaces that always become claims. Every one of those found before the EPC tender closes is a claim that never gets written.
Vendor leverage
Once a contract is signed, technical clarifications flow through commercial channels — slowly, and at a price. Before award, the same questions cost nothing. Structured technical bid evaluation, run by engineers who know what the answers should look like, converts uncertainty into contract language while the owner still holds the pen.
Schedule truth
Every tender schedule is optimistic; the question is by how much. An independent engineer benchmarks durations against delivered projects rather than proposals — procurement lead times as quoted by mills and shops this year, not as remembered from the last boom. Boards make better commitments on ranges than on single dates.
The earlier, the cheaper
None of this requires a large team. A focused owner’s engineering scope before FEED — basis-of-design review, tender technical evaluation, schedule benchmarking — typically costs a fraction of a percent of TIC, and pays for itself the first time a scope gap surfaces on paper instead of on site.