What Is Permit-to-Work (PTW)?
Permit-to-work (PTW) is a formal system used to control hazardous work by defining scope, hazards, isolations, authorizations, and handovers before work begins. PTW helps teams coordinate maintenance, operations, and safety controls.
By Enthovion Editorial Team · Published 2026-07-05 · Updated 2026-07-21
Key takeaways
- PTW defines what work is authorized and under what controls.
- Isolation and gas testing are common PTW elements.
- Handover and conflict review reduce simultaneous operations risk.
- PTW records should be auditable.
Core PTW elements
A structured PTW system typically captures:
- Work scope and hazard identification
- Isolation and verification steps
- Gas testing where applicable
- Workforce roles and authorizations
- Shift handover and closure records
Enthovion PTW approach
Enthovion is planned to support PTW with Dashboard, Register, Create Permit Wizard, and structured Permit Detail tabs including Conflicts, Signatures, History, Attachments, and Closure.
Practical example
A maintenance team requests a hot work permit. The PTW record captures isolation status, gas test results, authorized workforce, and shift handover notes before work starts.
Limitations
- PTW procedures are organization-specific.
- Software supports workflow capture but does not replace field authority.
- Conflict review requires human judgment.