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A punch list (also called a snag list or deficiency list) is the itemized record of outstanding work, defects, or non-conformances identified during the commissioning and pre-handover phase of a capital project, which must be resolved before the facility is formally accepted by the owner-operator. On industrial capital projects, punch list items typically range from minor finishing issues to items that directly affect safety or operability, and clearing the punch list is usually a formal precondition for Provisional Acceptance.
For EPC contractors and owner-operators in oil, gas & LNG, chemical & process, utilities, pharmaceutical, shipping, and mining & metals, a well-managed punch list is the mechanism that ensures the facility handed over actually matches what was contracted — and that nothing gets lost between commissioning and operations.
Punch list items are typically categorized by severity: Category A items are safety-critical or prevent safe operation and must be resolved before start-up; Category B items affect performance or completeness but don’t block start-up; Category C items are minor, cosmetic, or administrative and can be resolved after start-up under an agreed closeout schedule. Each item records a description, location, responsible party, target closure date, and verification evidence once resolved.
Punch lists are used across construction broadly, but on capital-intensive industrial projects the stakes and volume are different: thousands of items across multiple disciplines (mechanical, electrical, instrumentation, civil), tied directly to safety systems and process equipment, and requiring formal sign-off from both the EPC and the owner-operator before handover is accepted. Losing track of even a small number of safety-relevant items in a punch list of this size is a real operational risk.
Punch list items should be traceable back to the specific tag or equipment item they relate to in the Master Tag Register, and their resolution should be reflected in updated as-built documentation where the fix involved a physical or design change. A punch list that exists only as a standalone spreadsheet, disconnected from the tag register and drawing set, makes it difficult to verify that closure evidence actually corresponds to the correct piece of equipment.
Provisional Acceptance Certificates (PAC) are typically contingent on all Category A and B punch list items being closed, with only minor Category C items permitted to carry over into an agreed post-start-up closeout period. This makes accurate, real-time punch list status one of the key data points owner-operators track in the final weeks before taking over a facility.
Sharecat keeps punch list items linked to the tags and documents they relate to, so that closure evidence, updated as-built drawings, and outstanding item status stay connected to the same tag record maintenance and operations teams will later use. This gives EPCs and owner-operators a single, auditable view of punch list status tied directly to the underlying asset data, rather than a spreadsheet that has to be manually reconciled against the tag register at handover.
What is the difference between a punch list and a snag list?
The terms are used interchangeably in most regions; "punch list" is more common in North America, "snag list" in the UK and parts of Europe, Middle East, and Asia. Both refer to the same concept: an itemized list of outstanding work or defects to be resolved before formal acceptance.
Who is responsible for closing punch list items?
The EPC contractor or relevant subcontractor is typically responsible for resolving items and providing closure evidence, while the owner-operator's commissioning or completions team verifies and formally accepts each closure before it is considered resolved.
Can a facility start up with open punch list items?
Yes, but typically only Category C (minor) items may remain open at start-up, carried into an agreed closeout period. Safety-critical or performance-affecting items (Category A and B) are normally required to be closed before start-up is permitted.
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