What should be done to ensure safety when using portable heaters on-site?

To ensure safety when using portable heaters on-site, it is crucial to keep them away from flammable materials and never leave them unattended. This practice minimizes the risk of accidental fires, as portable heaters can generate significant heat and have the potential to ignite combustible substances nearby. By maintaining a safe distance from flammable materials, the likelihood of an outbreak of fire is greatly reduced.

Additionally, leaving heaters unattended can lead to situations where they may overheat, malfunction, or come into contact with objects that can catch fire, significantly increasing the danger. Thus, adherence to this safety protocol is essential for protecting both personnel and property on construction sites.