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NFPA 51 b

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NFPA 51B, Standard for Fire Prevention During Welding, Cutting, and Other Hot Work, provides guidelines to prevent fires during hot work operations. It is the basis for many current fire prevention practices adopted by industry. [2]

OSHA standards incorporate NFPA 51B-1962 by reference for fire prevention and protection during welding and cutting. [1] [4]

Key aspects covered in the standard include:

  • Basic precautions
  • Special precautions
  • Fire protection and prevention responsibilities for welders and cutters, supervisors, and management

[1] [4] Basic precautions outlined by OSHA include:

  • Moving fire hazards to a safe place if the object to be welded or cut can be moved.
  • Using guards to confine heat, sparks, and slag and protect immovable fire hazards if the object cannot be moved and fire hazards cannot be removed.
  • Welding and cutting should not be performed if the above requirements cannot be followed.

[4] [6] Special precautions may include:

  • Protecting combustible materials below floor openings or cracks.
  • Maintaining suitable fire extinguishing equipment in a state of readiness.
  • When welding or cutting is performed in locations where other than a minor fire might develop, or any of the following conditions exist, fire watchers shall be required:

[4] Fumes and gases produced during welding and cutting processes can be dangerous to your health and may cause serious lung disease. Keep your head out of fumes. Do not breathe fumes and gases. Use enough ventilation, local exhaust, or both to keep fumes and gases from your breathing zone and the general area. [3] [5]

6 source record(s)

Sources used for this answer

[1] Safety Data Sheet - Propane

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# Propane (cont.) Linde # Propane Safety Data Sheet P-4646 This SDS conforms to U.S. Code of Federal Regulations 29 CFR 1910.1200, Hazard Communication. Issue date: 01/01/1984 Revision date: 01/19/2023 Supersedes: 02/07/2022 Version: 1.3 <table><tr><th colspan="2">SECTION 16: Other information</th></tr><tr><td>Other information</td><td>When using this product in welding and cutting, read and understand the manufacturer's instructions and the precautionary label on the product. Ask your welding products supplier for a copy of Linde's free safety booklet, P-2035, Precautions and Safe Practices for Gas Welding, Cutting, and Heating, and for other manufacturers' safety publications. For a detailed treatment, get ANSI Z49.1, Safety in Welding, Cutting, and Allied Processes, published by the American Welding Society (AWS), www.aws.org. Order AWS documents from Global Engineering Documents, global.ihs.com. Arcs and sparks can ignite combustible materials. Prevent fires. Refer to NFPA 51B, Standard for Fire Prevention During Welding, Cutting, and Other Hotwork. Do not strike an arc on the container. The defect produced by an arc burn may lead to container rupture. Fumes and gases produced during welding and cutting processes can be dangerous to your health and may cause serious lung disease. KEEP YOUR HEAD OUT OF FUMES. DO NOT BREATHE FUMES AND GASES. Use enough ventilation, local exhaust, or both to keep fumes and gases from your breathing zone and the general area. Short-term overexposure to fumes may cause dizziness, nausea, and dryness or irritation of the nose, throat, and eyes; or may cause other similar discomfort. Contaminants in the air may add to the hazard of fumes and gases. When you mix two or more chemicals, you can create additional, unexpected hazards. Obtain and evaluate the safety information for each component before you produce the mixture. Consult an industrial hygienist or other trained person when you evaluate the end product. Before using any

[2] Rules for the Administration of the Oregon Safe Employment Act (General Occupational Safety and Health, Division 2, OSHA Oregon)

Page 1496

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Source excerpt

# [redacted phone] Adoption by Reference (cont.) ## 1910.252 General Requirements (cont.) Q General Requirements 2BDivision 2 Oregon Administrative Rules Oregon Occupational Safety and Health Division (1) Basic precautions. For elaboration of these basic precautions and of the special precautions of paragraph (a)(2) of this section as well as a delineation of the fire protection and prevention responsibilities of welders and cutters, their supervisors (including outside contractors) and those in management on whose property cutting and welding is to be performed, see Standard for Fire Prevention in Use of Cutting and Welding Processes, NFPA Standard 51B, 1962, which is incorporated by reference as specified in 1910.6. The basic precautions for fire prevention in welding or cutting work are: (i) Fire hazards. If the object to be welded or cut cannot readily be moved, all movable fire hazards in the vicinity shall be taken to a safe place. (ii) Guards. If the object to be welded or cut cannot be moved and if all the fire hazards cannot be removed, then guards shall be used to confine the heat, sparks, and slag, and to protect the immovable fire hazards. (iii) Restrictions. If the requirements stated in paragraphs (a)(1)(i) and (a)(1)(ii) of this section cannot be followed then welding and cutting shall not be performed. (2) Special precautions. When the nature of the work to be performed falls within the scope of paragraph (a)(1)(ii) of this section certain additional precautions may be necessary: (i) Combustible material. Wherever there are floor openings or cracks in the flooring that cannot be closed, precautions shall be taken so that no readily combustible materials on the floor below will be exposed to sparks which might drop through the floor. The same precautions shall be observed with regard to cracks or holes in walls, open doorways and open or broken windows. (ii) Fire extinguishers. Suitable fire extinguishing equipment shall be maintaine

[3] Welding - Hot Work

Page 1

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CCOHS CCHST Canadian Centre for Occupational Health and Safety Centre canadien d'hygiène et de sécurité au travail Welding # Welding - Hot Work ## On this page What is hot work? What is a hot work management program? Can hot work be avoided? Before performing hot work, what are some general good practices? ## What is hot work? 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. Getting a hot work permit before performing hot work is just one of the steps involved in a hot work management program that helps to reduce the risk of starting a fire by hot work in areas where there are flammable or combustible materials. The 2024version of NFPA (National Fire Protection Association) Standard 51B "Fire Prevention During Welding, Cutting and Other Hot Work," serves as the basis for many current fire prevention practices adopted by industry. CSA standard W117.2-12 (R2017) - Safety in welding, cutting, and allied processes and ANSI (American National Standards Institute) standard Z49.1: 2021Safety in Welding, Cutting and Allied Processes were created to protect persons and property from injury, illness, and damage from fire and explosions that may occur from these processes. ## What is a hot work management program? Hot work management programs are put in place to control or eliminate hot work hazards and their risks. Programs include the development of policies, procedures, and the assignment of responsibilities and accountabilities for all aspects of hot work. A program includes: 1. Policies a. Where hot work is permitted b. When hot work is permitted Welding - Hot Work CCOHS

[4] Safety Data Sheet - Acetylene, dissolved

Page 10

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Source excerpt

# Acetylene, dissolved (cont.) Linde # Acetylene, dissolved Safety Data Sheet P-4559 PRAXAIR This SDS conforms to U.S. Code of Federal Regulations 29 CFR 1910.1200, Hazard Communication. Issue date: 01/01/1979 Revision date: 01/19/2021 Supersedes: 10/13/2016 Version: 1.0 <table><tr><th colspan="2">SECTION 16: Other information</th></tr><tr><td>Other information</td><td>When using this product in welding and cutting, read and understand the manufacturer's instructions and the precautionary label on the product. Ask your welding products supplier for a copy of Praxair's free safety booklet, P-2035, Precautions and Safe Practices for Gas Welding, Cutting, and Heating, and for other manufacturers' safety publications. For a detailed treatment, get ANSI Z49.1, Safety in Welding, Cutting, and Allied Processes, published by the American Welding Society (AWS), www.aws.org. Order AWS documents from Global Engineering Documents, global.ihs.com. Arcs and sparks can ignite combustible materials. Prevent fires. Refer to NFPA 51B, Standard for Fire Prevention During Welding, Cutting, and Other Hotwork. Do not strike an arc on the container. The defect produced by an arc burn may lead to container rupture. Fumes and gases produced during welding and cutting processes can be dangerous to your health and may cause serious lung disease. KEEP YOUR HEAD OUT OF FUMES. DO NOT BREATHE FUMES AND GASES. Use enough ventilation, local exhaust, or both to keep fumes and gases from your breathing zone and the general area. Short-term overexposure to fumes may cause dizziness, nausea, and dryness or irritation of the nose, throat, and eyes; or may cause other similar discomfort. Contaminants in the air may add to the hazard of fumes and gases. When you mix two or more chemicals, you can create additional, unexpected hazards. Obtain and evaluate the safety information for each component before you produce the mixture. Consult an industrial hygienist or other trained person when you eval

[5] Safety Standards for General Safety and Health Standards (Chapter 296-24 WAC)

Page 331

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Source excerpt

# WAC 296-24-685 Application, installation, and operation of arc welding and cutting equipment. (cont.) ## WAC 296-24-[redacted postal code] Hazards and precautions. (cont.) Chapter 296-24 WAC General Safety and Health Standards Part I Welding, Cutting, and Brazing 01/05/2016. Order 73-5, 296-24-[redacted postal code], filed 5/9/73 and Order 73-4, 296-24-[redacted postal code], filed 5/7/73.] ## WAC 296-24-[redacted postal code] Maintenance. Periodic inspection must be made by qualified maintenance personnel, and records of the same maintained. You must instruct the operator to report any equipment defects to the supervisor and you must discontinue the use of the equipment until safety repairs have been completed. [Statutory Authority: RCW 49.17.010, .040, .050, and .060. 15-24-100 (Order 15-04), $ 296-24-[redacted postal code], filed 12/01/2015, effective 01/05/2016. Statutory Authority: Chapter 49.17 RCW. 94-15-096 (Order 94-07), 296-24-[redacted postal code], filed 7/20/94, effective 9/20/94; Order 73-5, 96-24-[redacted postal code], filed 5/9/73 and Order 73-4, 296-24-[redacted postal code], filed 5/7/73.] ## WAC 296-24-695 Fire prevention and protection. [Order 73-5, 296-24-695, filed 5/9/73 and Order 73-4, 296-24-695, filed 5/7/73.] <table><tr><th>You must meet the requirements</th><th>in this section</th></tr><tr><td>Basic precautions</td><td>WAC 296-24-[redacted postal code]</td></tr><tr><td>Special precautions</td><td>WAC 296-24-[redacted postal code]</td></tr><tr><td>Welding of cutting containers</td><td>WAC 296-24-[redacted postal code]</td></tr><tr><td>Confined spaces</td><td>WAC 296-24-[redacted postal code]</td></tr></table> ## WAC 296-24-[redacted postal code] Basic precautions. For elaboration of these basic precautions and of the special precautions of WAC 296-24-[redacted postal code] as well as a delineation of the fire protection and prevention responsibilities of welders and cutters, their supervisors (including outside contractors)

[6] Occupational Safety and Health Standards (OSHA 29 CFR 1910) - 1910.252 - General requirements.

Page 1

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Source excerpt

U.S. DEPARTMENT OF LABOR # Occupational Safety and Health Administration - Part Number: 1910 - Part Number - Title: Occupational Safety and Health Standards - Subpart: 1910 Subpart Q - Subpart Title: Welding, Cutting and Brazing Standard - Number: - 1910.252 - Title: General requirements. - GPO Source: e-CFR ## 1910.252(a) Fire prevention and protection- 1910.252(a)(1) Basic precautions. For elaboration of these basic precautions and of the special precautions of paragraph (a)(2) of this section as well as a delineation of the fire protection and prevention responsibilities of welders and cutters, their supervisors (including outside contractors) and those in management on whose property cutting and welding is to be performed, see Standard for Fire Prevention in Use of Cutting and Welding Processes, NFPA Standard 51B, 1962, which is incorporated by reference as specified in $ 1910.6. The basic precautions for fire prevention in welding or cutting work are: 1910.252(a)(1)(i) Fire hazards. If the object to be welded or cut cannot readily be moved, all movable fire hazards in the vicinity shall be taken to a safe place. 1910.252(a)(1)(ii) Guards. If the object to be welded or cut cannot be moved and if all the fire hazards cannot be removed, then guards shall be used to confine the heat, sparks, and slag, and to protect the immovable fire hazards. Submit Feedback

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