Hot Work Standard

(Document Web Link)

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Introduction

Working with ignition sources near flammable materials is referred to as "hot work." Welding, soldering and cutting are examples of hot work. Fires are often the result of the "quick five minute" job in areas not intended for welding or cutting. Understanding the risks associated before performing hot work is just one of the necessary steps that help to reduce the risk of starting a fire by hot work in areas where there are flammable or combustible materials.

 

Hot work can be avoided

You may be able to substitute hot work with other methods. Below are some examples:

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But remember, always assess the substitutes or alternate method for any risks or hazards.  Do not introduce any new risks or hazards.

 

Directive

· hot work tasks shall only be performed by a competent person who obtains authorization from their supervisor

· ensure that all equipment is in good operating order before work starts by performing inspections

· ensure all appropriate personal protective devices are available at the site and each worker has been trained on how to use, clean, and store them properly

· inspect the work area thoroughly before starting. Look for combustible materials in structures (partitions, walls, ceilings)

· move all flammable and combustible materials away from the work area

· if combustibles cannot be moved, cover them with fire resistant blankets or shields. Protect gas lines and equipment from falling sparks, hot materials, and objects

· sweep clean any combustible materials on floors around the work zone

· remove any spilled grease, oil, or other combustible liquids

· vacuum away combustible debris from inside ventilation or other service duct openings to prevent ignition

· seal any cracks in ducts

· prevent sparks from entering the duct work

· cover duct openings with a fire resistant barrier and inspect the ducts after work has concluded

· ensure that appropriate fire extinguishers are readily available and easily accessible

· ensure that the first-aid boxes are available and easily accessible

· block off cracks between floorboards, along baseboards and walls, and under door openings, with a fire-resistant material

· close all doors and windows

· cover wall or ceiling surfaces with a fire resistant and heat insulating material to prevent ignition and accumulation of heat

· secure, isolate, and vent pressurized vessels, piping and equipment as needed before beginning hot work

· inspect the area following work to ensure that wall surfaces, studs, wires or dirt have not heated up

· post a trained fire watcher within the work area, including lower levels if sparks or slag may fall during welding, including during breaks, and for at least until the fire hazard no longer exists

· eliminate explosive atmospheres (e.g., vapours or combustible dust) or do not allow hot work

· shut down any process that produces combustible atmospheres, and continuously monitor the area for accumulation of combustible gases before, during, and after hot work

· if possible, schedule hot work during shutdown periods

· comply with the required safety legislation and standards applicable to your area of work

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