Punch List
Template (Excel)

A punch list is the construction-completion register of every outstanding defect, missing item, or non-conforming work item raised during mechanical-completion walkdowns and pre-commissioning checks on an EPC project. Each item records system, equipment tag, discipline, defect description, A / B / C category, owner, target closeout date, and verified closeout. Industry practice classifies items as Category A (must close before mechanical completion sign-off), Category B (must close before start-up), and Category C (can close after operations begin). The punch list is the gating register for mechanical completion certificates and ready-for-start-up declarations.

Category A items prevent mechanical completion certificate issue: missing safety devices, missing tag plates on regulated equipment, non-compliant welds, unbolted flanges, missing instrument loops, hazardous-area certificate gaps. Category B items must close before start-up but do not prevent system handover for cold commissioning: minor painting, insulation patching, secondary lagging, non-critical alarms. Category C items can close after operations begin: aesthetics, touch-up paint, signage, non-critical documentation gaps. The Category column drives the sequence of mechanical completion, ready-for-commissioning, and ready-for-start-up gates.

At minimum: punch ID, date raised, system or subsystem reference, equipment tag, drawing reference, discipline, A / B / C category, defect description, reference spec or code clause, photo evidence, location coordinates, owner (subcontractor or vendor), target closeout date, closeout action, closed-by, verified-by, and closeout date. EPC contractors using subsystem-based commissioning add a Subsystem column so the punch list rolls up to the subsystem turnover package. The template includes the full standard column set plus a Linked NCR Reference for items that escalate to formal non-conformance.

Pathnovo, an engineering document intelligence platform, auto-tracks punch items by ingesting walkdown reports, marked-up isometrics, completion-check photos, and field inspection records, then matching each item to the affected system, equipment tag, and drawing reference. Category, discipline, and owner are extracted from the source markup. Open Category A items are flagged on the mechanical completion dashboard and block subsystem turnover. See the engineering handover workflow for the punch-to-handover pipeline.

The punch list is a gating register for three sequential milestones. Mechanical completion certificate (MCC) is issued only when every Category A item against the system is closed and verified. Ready-for-commissioning is issued when Category A and Category B items affecting commissioning safety are closed. Ready-for-start-up is issued when all remaining Category B items are closed. Category C items roll into operations completion warranty work. The punch list is the documented evidence that supports each milestone certificate.

On brownfield revamps, the new-scope punch list is run alongside an existing-condition register that captures any defects in the existing plant discovered during the revamp tie-in. New-scope items follow standard A / B / C gating. Existing-condition items often require operator concession or are deferred to the next planned shutdown maintenance scope. Add an 'Existing or New' column to separate the two. Indian PSU brownfield projects (IOCL, BPCL, HPCL revamps) typically agree the existing-condition treatment up front in the contract. The template includes the column.

Subsystem-based commissioning rolls every punch item up to its parent system or subsystem. The system turnover package (also called system completion dossier) cannot be signed off and turned over from construction to commissioning until every Category A punch item against the system is closed and verified. The turnover package includes the punch list excerpt for the system as evidence of closeout. See the system turnover package checklist template and the as-built documentation workflow.