Hot Work

Cutting and welding operations (referred to as hot work) are commonly associated with construction activities. Hot work equipment, which may produce high voltages or utilize compressed gases, requires special awareness and training on the part of the worker to be used safely. Contractors should control the hazards associated with hot work through the implementation of effective programs required under 29 CFR 1926 Subpart J – Welding and Cutting.

Hot Work Permits: Though not specifically required by federal, state, or local laws, the use of hot work permits is strongly encouraged. Hot work permits serve as a checklist for operators and those performing fire watch duties. The Contractor responsible for issuing permits should be qualified to examine the work site and ensure that appropriate protective steps, such as those listed in this section, have been taken.

Alarm Systems: Alarm systems should be disabled prior to beginning hot work. Public Safety should be notified at extension 258-3135 when requesting the disabling of an alarm system and at the conclusion of work to reactivate the system.

General Cutting and Welding Controls: Areas where hot work is done should be properly prepared. Combustible and flammable materials within the work area should be protected against fire hazards and the operation should not pose a hazard to others in nearby areas. To help achieve this, the following controls should be used:

• Cutting and welding operations restricted to authorized, properly trained individuals.
  
• Combustible materials should be moved at least 35 feet from the work site. If this is not possible, protect combustible materials with metal guards or by flameproof curtains or covers (other than ordinary tarpaulins).
  
• Floor and wall openings within 35 feet of the work site should be covered to prevent hot sparks from entering walls or falling beneath floors or to a lower level.
  
• Fire resistant curtains and/or tinted shields should be used to prevent fire, burns to workers, and ultra-violet light exposure.

Fire Watch: A person other than the operator should perform fire watch duties and remain at the work site for at least 30 minutes after hot work operations have ended. Additionally, the following steps should be taken:

• A fire extinguisher rated at not less than 2-A:10-B:C should be attached to all portable cutting and welding carts.
  
• If a building or area is equipped with a sprinkler system, then that system should be operational when hot work is performed.
  
• A fire code permit, which may be obtained from the local fire official, is required for all cutting and welding operations.

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