Pentágono
Back to Insights
ECOProject ManagementConstruction

How Expedited Engineering Change Orders Save Project Schedules

James Whitfield · January 22, 2026

Every construction project encounters field conditions that don't match the original design. A buried utility that wasn't on the survey. A structural member that interferes with a pipe run. An equipment foundation that doesn't match the vendor's revised certified drawings.

The Cost of Slow ECOs

When a traditional EPC firm handles a field change, the process often looks like this:

  1. Field supervisor identifies the issue
  2. Contractor submits an RFI to the EPC project manager
  3. PM routes to home-office engineering (often in a different city)
  4. Engineer reviews, marks up, routes for checking
  5. Checker reviews and returns comments
  6. Engineer revises, routes for PE stamp
  7. Stamped revision issued back to field

Elapsed time: 5-15 business days

During that time, the affected craft crew is either idle, working on alternate tasks (disrupting the planned sequence), or — worst case — proceeding with a field-improvised solution that creates quality and safety risks.

The 24-48 Hour Alternative

An expedited ECO process works differently:

  1. Field supervisor calls the engineering contact directly
  2. Engineer (who has domain knowledge of the facility type) visits the site or reviews photos/scans
  3. Engineer produces a stamped solution — not a preliminary sketch
  4. Digital delivery to the field team

Elapsed time: 24-48 hours

The difference isn't magic — it's removing the layers of bureaucracy between the problem and the solution. When the engineer who receives the call is also the one who can stamp the drawing, you eliminate the sequential review chain that turns a 4-hour engineering task into a 2-week administrative process.

When Expedited ECOs Make the Most Difference

  • **Turnarounds and shutdowns** — Every day of extended outage costs hundreds of thousands in lost production
  • **LNG construction** — Multiple trades working in tight sequences mean one delay cascades to many
  • **Brownfield modifications** — Existing conditions rarely match available drawings perfectly
  • **Remote sites** — When the nearest EPC office is a flight away, local engineering matters

Making It Work on Your Project

The key to successful expedited ECO service is establishing the relationship before you need it. Pre-qualify your ECO engineering firm, set up the commercial framework, and establish communication protocols so that when the first field issue appears, the response is immediate — not delayed by contract negotiations.