What guidance does NFPA provide concerning hot work for protecting buildings under construction or renovation?

by Nils Deacon, Manager, Inspections and Rating Services

Hot work should only be done in areas that are designated as fire safe. The designation is provided by a PAI – Permit Authorizing Individual.

One of the first precautions the PAI will address is the requirement that protective clothing and personal protective equipment, PPE, be provided for workers. The gear should be “selected to reduce the potential for ignition, burning, trapping hot sparks, and electric shock.” NFPA

The PAI will also try to move the work to an area free of combustibles, or make sure the combustibles are moved to a safe distance or are properly shielded. NFPA

The PAI will make sure there is sufficient fire protection equipment available and properly placed for emergency access.

A July 2022 Underwriters’ Corner discussed use of fire watches after the completion of hot work. However, they are not always required, depending on the location, combustible materials present, and size of the area in question.

When a fire watch is not required, the PAI will make a final check a half hour after completion of hot work to be sure there are no smoldering fires. NFPA

DISCLAIMER: This information reflects the interpretation of MSO, Inc. with regard to NFPA Standards and Codes and other code sources. It does not represent these codes’ official position on the items discussed.

Non-combustible workspace