Long-lead item

Material or equipment requiring substantial time for design, approvals, manufacture, delivery, or installation. Its procurement can influence the project’s completion date.

Why it matters

An expected delivery date should be supported by the current procurement record. Submittal approval, release to manufacture, shipping, site access, and startup are distinct milestones. A purchase order alone does not confirm that the item is ready to ship.

In practice

A project example

Permanent electrical equipment may be needed before final testing and occupancy. A delay can affect several downstream activities even if most visible construction is complete.

General educational guidance from KOW Building Consultants. Examples are illustrative, not project records. The applicable contract, standard, program, and jurisdiction control the requirements for a specific assignment.