What is a punch list in commissioning and how is it resolved?

• A. A punch list is a list of deficiencies identified during commissioning; owners/contractors fix issues; re-testing confirms closure.
• B. A punch list documents all installed equipment and their warranty dates.
• C. A punch list is a schedule for commissioning activities with no defects.
• D. A punch list is a document used to authorize payments to subcontractors.

Answer: (A)

A punch list in commissioning is a record of deficiencies identified during testing and inspections that must be corrected before the project can be accepted and turnover occurs. It captures items that don’t meet the design intent, contract specifications, or performance criteria, along with where they are, who is responsible, and what action is needed. The way it’s resolved is straightforward: the owner and the contractor (or the responsible trades) fix the listed issues and then run the necessary re-testing or re-inspections to verify that each item is actually closed. Once all items have been corrected and verified, the punch list is considered closed and formal project acceptance proceeds.

This differs from other types of lists. A document that catalogs installed equipment and warranty dates is more like an asset or equipment registry. A schedule for commissioning activities with no defects describes a project plan or commissioning schedule. A document used to authorize payments to subcontractors serves as a payment or contractual authorization form.