NFPA 51B, Standard for Fire Prevention During Welding, Cutting, and Other Hot Work

Hot Work Can be Dangerous. Help Prevent Accidents and Defend Against Hazards with this Updated Requirement.

Hot work poses serious safety hazards—especially when combustible materials are in the area. Help keep workers safe with NFPA 51B, Standard for Fire Prevention During Welding, Cutting, and Other Hot Work.

This must-have standard offers the most comprehensive hot work requirements and covers welding, cutting, heat treating, grinding, and other applications likely to produce sparks or flames.

Several changes have been made to the 2024 edition, including:

• New hot work requirements in accordance with NFPA 326, Standard for the Safeguarding of Tanks and Containers for Entry, Cleaning, or Repair
• Added requirement on reduced fire duration
• Clarifying revisions have been made to the definitions of permit and management
• Added annex material on acceptable permit documentation formats
• Updates to the mutual responsibility section in Chapter 4
• The term written is changed to documented to address digitally issued permits

Table of Contents

Chapter 1 Administration

1.1 Scope.
1.2 Purpose.
1.3 Application.
1.4 Retroactivity.
1.5 Equivalency.
1.6 Units and Formulas.

Chapter 2 Referenced Publications

2.1 General.
2.2 NFPA Publications.
2.3 Other Publications.
2.4 References for Extracts in Mandatory Sections.

Chapter 3 Definitions

3.1 General.
3.2 NFPA Official Definitions.
3.3 General Definitions.

Chapter 4 Responsibility for Hot Work

4.1 Management.
4.2 Permit Authorizing Individual (PAI).
4.3 Hot Work Operator.
4.4 Fire Watch.
4.5 Contractors.
4.6 Mutual Responsibility.

Chapter 5 Fire Prevention Precautions

5.1 Personal Protective Clothing.
5.2 Fire Extinguishers.
5.3 Permissible Areas.
5.4 Nonpermissible Areas.
5.5 Hot Work Permit.
5.6 Fire Watch and Fire Monitoring.
5.7 Hot Tapping.
5.8 Cylinders.

Chapter 6 Sole Proprietors and Individual Operators

6.1 Assignment of PAI and Fire Watch.
6.2 Documented Hot Work Permit.

Chapter 7 Public Exhibitions and Demonstrations

7.1 Application.
7.2 Supervision.
7.3 Site.
7.4 Fire Protection.
7.5 Cylinders.

Annex A Explanatory Material
Annex B Significant Hot Work Incidents
Annex C Informational References

2024 (9781455930456)

2019 (9781455920266)