These 7 types of work permits are used across industries like construction, oil and gas and manufacturing. Each permit type addresses specific hazards and enforces safety protocols for the job's unique risks.
Hot work is any activity that generates flames, sparks or intense heat—welding, cutting, brazing or grinding. A hot work permit ensures the necessary safety measures are in place—fire watches, fire resistant blankets and fire extinguishers. The goal is to prevent accidental fires or explosions in areas where flammable materials are present.
Cold work is any task that doesn't produce heat, sparks or open flames. Examples are routine mechanical maintenance, equipment inspections or basic assembly tasks. While these jobs may seem less risky, they can still involve chemical exposure, rotating machinery or slip and fall hazards. A cold work permit ensures these risks are identified and controlled before work begins.
Electrical work permits are for jobs involving the installation, maintenance or inspection of electrical systems and equipment. These permits usually require lockout-tagout (LOTO) procedures to isolate energy sources, prevent accidental energization. Additional controls may include grounding, use of insulated tools and proper PPE like arc rated clothing.
Confined spaces—tanks, silos, manholes or pits—pose unique dangers like limited oxygen, toxic gases or restricted access. A confined space entry permit requires atmospheric testing, ventilation, rescue plans and continuous monitoring. Since these areas are not designed for continuous occupancy, strict controls are necessary.
Jobs performed at elevated positions—roof work, scaffolding or ladder use—fall under this category. A height work permit ensures fall protection systems (harnesses, guardrails), specialized training and emergency rescue procedures are in place. These controls help minimize the risk of serious injury from falls.
Excavation or trenching can expose workers to cave-ins, falling loads or contact with underground utilities. An excavation permit requires pre-work site inspections, shoring or sloping to prevent soil collapse and safe access/egress protocols. Often utility lines are identified and marked before digging begins.
This permit covers work with hazardous substances—corrosive, flammable or toxic. The permit includes labeling, specialized PPE and spill procedures. Training on handling and disposing of chemicals is required to prevent worker injury and environmental damage.
A Rotor Lock Permit is a permit to lock the turbine rotor during maintenance or inspection. This permit says all necessary precautions have been taken to lock the rotor so it won’t spin and cause injury or damage. Must be issued and signed by authorized person before any work is done on or near the rotor.
