Hot Work Permit — Quick Reference
A hot work permit is a written authorisation required before any activity that produces sparks, flames, or heat in an area where a fire could start. In Australia, it falls under WHS regulations and AS 1674.1 (Safety in welding and allied processes). Required for welding, brazing, cutting, grinding, soldering, and any open-flame work outside designated hot work areas.
| Hot work activity | Permit required? |
|---|---|
| Welding, brazing, cutting outside a workshop | Yes |
| Grinding or abrasive cutting near combustibles | Yes |
| Soldering near flammable materials | Yes |
| Open-flame work in a non-designated area | Yes |
| Welding inside a designated, permanent hot work bay | No (covered by SWMS) |
What is a hot work permit and when do you need one
You'll need a hot work permit in Australia whenever your work involves open flames (eg welding, brazing and soldering), produces sparks or generates hot surfaces with enough heat to ignite flammable materials. This applies to situations beyond just welding and includes cutting torches, grinding tools, brazing equipment, soldering tools, and bitumen boilers.
Why is a hot work permit necessary
The primary purpose of a hot work permit is to identify hazards, identify proactive and reactive control measures (such as assigning a fire watch person and removing flammable items), secure clear authorisation from a designated knowledgeable person, and make all workers aware of ongoing hot work and associated fire risks.
Who issues hot work permits
The permit is issued by a designated permit officer who may hold titles such as Authorised Officer, Works Supervisor, Health and Safety Representative (HSR), or Permit Issuer. They must be extensively knowledgeable about the site, safe work practices, and risk assessment pertaining to hot work.
General process in getting a hot work permit in Australia
1. Identify the hot work activity. 2. Assign a competently trained designated permit officer. 3. Prepare the worksite (remove combustibles, install welding screens). 4. Document the permit with worker names, location, duration, nature of work, and fire watch details. 5. Monitor and review. 6. Inspect post-work and sign off that the area is clear of fire hazards.
Key action items and checklist (as per SafeWork NSW)
Before doing actual hot work, identify and eliminate or control hazards: flammable materials such as rubbish and dust, confined spaces, sparks and flash, electrical and gas line services, ventilation issues. Use a fire watch person, isolate and secure the area with signage, wear proper personal protective equipment, and check for smouldering embers before leaving.
People Also Ask — When You Need a 'Hot Work Permit'
Q: When is a hot work permit required in Australia?
A hot work permit is required whenever work involving open flame, sparks, or heat (welding, grinding, cutting, brazing, soldering, or use of heat guns) is performed in an area where flammable or combustible materials are present — including most industrial facilities. Requirements are set by WHS regulations and facility-specific safety management systems; always check the site's specific requirements before commencing.
Q: How long is a hot work permit valid?
Hot work permits are typically issued for a single work period — usually one shift or one day — and must be renewed for each subsequent period. Some facilities issue permits for a specific duration (e.g., 4 hours). Permits are not transferable between workers or locations. Conditions on-site can change rapidly, so reissuing daily ensures a fresh hazard assessment.
Q: What is the minimum fire watch period after hot work?
The minimum fire watch period recommended by Safe Work Australia is 30 minutes after all hot work has ceased. However, many facilities and Australian Standards require longer periods — 60 minutes is common for high-risk areas, and some sites require continuous monitoring for several hours. Smouldering fires can ignite hidden combustibles long after the work is complete.
Q: What must a hot work permit include?
A hot work permit must include the work location and description, the name of the person performing the work, the start and end time, fire hazards identified and controls applied, fire extinguisher type and location, fire watch arrangements (including duration), and the authorising supervisor's signature. Site-specific permits may include additional requirements such as gas testing or isolation confirmation.
