Permit-to-Work Types Reference 2026

A permit-to-work (PTW) system is a formal documented procedure used to control hazardous work activities. This dataset catalogues 11 standard PTW types in widespread industrial use, drawn from established HSE practice in oil and gas, construction, manufacturing, and utilities. Each row describes the permit scope, principal hazards, typical precautionary controls, the role normally authorised to issue the permit, a typical validity window, and — where the editors are highly confident — specific regulatory or guidance references. PTW types covered: hot work, confined space entry, working at height, electrical isolation / lockout-tagout (LOTO), excavation and ground disturbance, cold work (general mechanical), working over or near water, industrial radiography, lifting operations, line breaking, and energized electrical work. References cited include OSHA 29 CFR 1910.146 (confined spaces), 1910.147 (LOTO), 1910.252 (welding/hot work), NFPA 51B (fire prevention during welding), the UK Confined Spaces Regulations 1997, and IOGP Report 415 (PTW systems). Clause numbers and sub-paragraph citations are included only where the editors are highly confident; uncertain specifics are omitted rather than approximated. This table is intended as a practitioner quick-reference and a seed for PTW procedure development. It is not a substitute for the authoritative source documents listed in the key_references column; users must verify current requirements against those sources before applying any control measure. Regulatory versions and edition years were current as of early 2026 — check issuing bodies for any amendments published after that date. Dataset compiled by SmartQHSE (smartqhse.com) and released under CC BY 4.0. Verify all values against the authoritative sources cited before operational use.