2022 NFPA 350 Guide - Current Edition
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  • Description

    Help keep workers safe and minimize deaths, injuries, and illnesses by referencing NFPA 350, Guide for Safe Confined Space Entry and Work.

    Each year, hundreds of accidents and incidents occur in locations classified as confined spaces, leaving workers and emergency responders at risk of myriad hazards that are not controlled as they are in occupied spaces. NFPA 350, 2022 edition, provides comprehensive information and guidance on better protecting workers from confined space dangers ranging from entrapment and drowning to asphyxiation and toxic chemical exposure.

    This vital document is designed to provide direction for increasing the effectiveness of a confined space safety program and to assist in complying with regulations such as OSHA 29 CFR 1910.146 and 29 CFR 1926, Subpart AA. NFPA 350 offers easier-to-understand terminology and fills gaps not accounted for by current legislation.

    NFPA 350 also is intended to assist fire and emergency services personnel in creating and assessing confined space rescue plans in combination with NFPA 1670, Standard on Operations and Training for Technical Search and Rescue Incidents.

    NFPA 350 covers the following confined space safety topics:

    • Identification of confined spaces
    • Evaluation of hazards
    • Atmospheric monitoring
    • Hazard elimination and control
    • Ventilation types, selection and design, equipment, and installation
    • Rescue and rescue planning
    • Confined space personnel duties, responsibilities, and competencies
    • Pre-entry evaluation forms and permits
    • Management of change (MOC)
    • Prevention through design (PtD)

    The updated NFPA 350, Guide for Safe Confined Space Entry and Work, 2022 edition is your source for the most complete and up-to-date industry knowledge and direction.

    This resource is essential for facility managers, code officials, safety personnel, and anyone required to perform work, inspections, or testing in confined spaces, or are responsible for their safety. While regulatory standards provide general requirements and performance criteria, this guide strives to explain how to identify, evaluate, and control dangers and execute a rescue response.

    In the 2022 edition of NFPA 350, the OSHA Safety and Health Information Bulletin (SHIB 09-30-2013), Calibrating and Testing Direct-Reading Portable Gas Monitors, is referenced to provide guidance to workers and employers on calibrating and testing direct-reading portable gas monitors that are used for confined space entry and work.

    Help safeguard facilities, equipment, personnel, and the public from fire, explosion, and other health hazards associated with confined spaces by referencing the latest guidance and best practices.

    NFPA 350, Guide for Safe Confined Space Entry and Work, offers insight and instruction in establishing procedures and how-tos for minimizing confined space incidents. Ensure you are referencing the most current information by ordering your copy today.

  • Table of Contents (2022 Current Edition)

    NFPA® 350 Guide for Safe Confined Space Entry and Work, 2022 Edition

    Chapter 1 Administration
    1.1 Scope.
    1.2 Purpose.
    1.3 Application.
    1.4 Equivalency.
    Chapter 2 Referenced Publications
    2.1 General.
    2.2 NFPA Publications.
    2.3 Other Publications.
    2.4 References for Extracts in Advisory Sections.
    Chapter 3 Definitions
    3.1 General.
    3.2 NFPA Official Definitions.
    3.3 General Definitions.
    Chapter 4 Identification of Confined Spaces Within a Workplace
    4.1 Identification and Documentation of Confined Spaces.
    4.2 Identification of Confined Spaces During Construction.
    4.3 Determination of Confined Spaces.
    4.4 Signs.
    4.5 Securing Confined Spaces.
    4.6 Identification of Spaces for Nonfacility Personnel.
    Chapter 5 General
    5.1 General Requirements.
    5.2 Confined Space Program.
    5.3 Confined Space Evaluation.
    5.4 Entry Conditions.
    5.5 Basic Requirements and Considerations.
    5.6 Roles and Responsibilities.
    5.7 Training Guidelines.
    5.8 Training Verification.
    Chapter 6 Identification and Evaluation of Hazards In and Around Confined Spaces
    6.1 General.
    6.2 Hazard Anticipation/Preplan.
    6.3 Hazard Identification.
    6.4 Hazard Evaluation.
    6.5 Communications.
    6.6 Resources.
    Chapter 7 Atmospheric Monitoring
    7.1 General.
    7.2 Procedures for Atmospheric Monitoring.
    7.3 Pre-Entry Testing.
    7.4 Selection and Types of Monitors.
    7.5 Other Monitor Types.
    7.6 Intrinsic Safety.
    7.7 Personal Monitoring Versus Remote Sampling.
    7.8 Monitor Calibration.
    7.9 Zeroing.
    7.10 Bump Testing.
    7.11 Clearing Peak Values.
    7.12 Training and Competency.
    7.13 Continuous Atmospheric Monitoring.
    7.14 Acceptable Atmospheric Limits for Entry.
    7.15 Gas Monitor Maintenance.
    7.16 Training.
    7.17 Record Retention.
    Chapter 8 Hazard Elimination, Mitigation, or Control
    8.1 Purpose.
    8.2 General.
    8.3 Controls for Other Identified Hazards.
    8.4 Chemical and Atmospheric Hazards.
    8.5 Hot Work.
    8.6 Energy Sources.
    8.7 Portable Electrical and Mechanical Equipment Used in and Adjacent to Confined Spaces.
    8.8 Bonding and Grounding for Flammable and Combustible Materials.
    8.9 Ignition Sources.
    8.10 Fall Protection.
    8.11 Slip, Trip, Ingress, Egress, and Entanglement Hazards.
    8.12 Lighting.
    8.13 Animals.
    8.14 Personal Protective Equipment (PPE).
    Chapter 9 Ventilation
    9.1 General.
    9.2 Ventilation Types.
    9.3 Selection and Design of Ventilation.
    9.4 Ventilation Equipment.
    9.5 Ventilation Installation.
    9.6 Consideration in Selection of Ventilation.
    Chapter 10 Rescue
    10.1 Purpose.
    10.2 Rescue Team Qualification.
    10.3 Hazard Evaluation and Risk Assessments.
    10.4 Standard Operating Procedures (SOPs).
    10.5 Regulatory Compliance.
    10.6 Incident Response Planning.
    10.7 Confined Space Rescue Equipment and Gear.
    10.8 Incident Management System.
    10.9 Rescue Team Composition.
    10.10 Entry Rescue — Rescue Service Capabilities.
    Chapter 11 Confined Space Personnel Duties, Responsibilities, Qualifications, and Competencies
    11.1 General.
    11.2 Entrants.
    11.3 Attendant.
    11.4 Entry Supervisor.
    11.5 Rescuer.
    11.6 Gas Tester.
    11.7 Owner/Operator.
    11.8 Contractor/Subcontractor.
    11.9 Ventilation Specialist.
    11.10 Isolation Specialist.
    11.11 Standby Worker.
    11.12 Training.
    Chapter 12 Written Confined Space Program
    12.1 Purpose.
    12.2 Responsible Person and Responsibilities.
    12.3 Reporting Unsafe Conditions.
    12.4 Periodic Review.
    12.5 Identification of Confined Spaces.
    12.6 Program Procedures.
    12.7 Atmospheric Monitoring.
    12.8 Ventilation.
    12.9 Rescue.
    12.10 Personal Protective Equipment (PPE).
    12.11 Isolation Program (Lockout/Tagout).
    12.12 Hot/Cold Work.
    12.13 Permits.
    12.14 Training.
    12.15 Recordkeeping.
    12.16 Contractors.
    12.17 Reporting of Accidents or Near Misses.
    12.18 General Fitness for Duty Evaluation.
    Chapter 13 Pre-Entry Evaluation and Entry Permit
    13.1 General.
    13.2 Pre-Entry Evaluation and Permit Elements.
    13.3 Reclassification and Alternate Procedures.
    Chapter 14 Recordkeeping
    14.1 Purpose.
    14.2 Employer Site Records.
    14.3 Employee Records.
    Chapter 15 Management of Change (MOC)
    15.1 Purpose.
    15.2 Responsibilities and Communication for Implementing MOC.
    15.3 MOC Process and Activation.
    15.4 MOC-Warranted Confined Space Changes.
    15.5 MOC Completion and Verification.
    Chapter 16 Prevention Through Design (PtD)
    16.1 Purpose.
    16.2 Background.
    16.3 Responsibilities.
    16.4 PtD Process and Activation.
    16.5 PtD Warranted Confined Space Changes.
    Annex A Explanatory Material
    Annex B Sample Confined Space Pre-Entry Evaluation Form and Permit
    Annex C OSHA Alternate Entry Procedures and Reclassification
    Annex D Sample Management of Change (MOC) Form
    Annex E Informational References
  • Prior Editions

    2019 Edition

     

    Every year, confined space incidents result in worker deaths, injuries, and serious illnesses. Help protect workers using NFPA 350, Guide for Safe Confined Space Entry and Work.

    Confined space danger is widespread in all types of facilities -- from commercial buildings and hospitals to public works, utilities, and chemical/industrial facilities. By law in the United States, employers must comply with applicable regulations such as OSHA's 29 CFR 1910.146 and 29 CFR 1926 Subpart AA to ensure personnel safety. However, these regulations tell you what to d0 -- not how to identify, evaluate, and control confined space hazards or conduct rescue response. To fill the information gap, trust the 2019 edition of NFPA 350, Guide for Safe Confined Space Entry and Work.

    NFPA 350 is essential for anyone who enters confined spaces, along with facility managers, code officials, and safety personnel.

    NFPA 350 explains how to help protect workers who enter into confined spaces for inspection or testing, or to perform associated work. Provisions address the full range of special hazards, including those present in water treatment, petrochemical, and agricultural facilities. It provides information to assist companies that need to comply with OSHA's Permit-Required Confined Spaces (29 CFR 1910.146) among other standards. In addition, NFPA 350 helps fire service and emergency services personnel develop and evaluate plans for confined space rescue in conjunction with NFPA 1670, Standard on Operations and Training for Technical Search and Rescue Incidents.

    Changes in this important second edition of NFPA 350 include:

    • Clarified recommended practices for safe work within confined spaces, including recommendations for entry and work in confined spaces that are inerted (oxygen deficient)
    • New information specific to construction activities as addressed in OSHA's 29 CFR 1926 Subpart AA, "Confined Spaces in Construction."
    • Added recommendations for rescue in confined spaces that do not have a hazardous atmosphere but are so configured that rescue operations could be difficult
    • New information pertaining to photoionization detectors (PID). PID are now widely available and used in combination with other atmosphere testing devices for assessing atmosphere hazards within confined spaces.
    • Revised recommended practice for selection, evaluation, and approval of a qualified rescue service
    • First-time definitions for "engulfment" and "purging"
    • A new table in Annex A that illustrates the gas hazards that can exist in confined spaces specific to various industries

    Follow the latest practices developed by experts for:

    • Identification of confined spaces
    • Evaluation of hazards
    • Atmospheric monitoring
    • Hazard elimination and control
    • Ventilation
    • Rescue and rescue planning
    • Confined space personnel duties, responsibilities, and competencies
    • Pre-entry evaluation forms and permits
    • Management of Change (MOC)
    • Prevention Through Design (PtD)

    Make sure you are better prepared to recognize, evaluate, and control confined space entry hazards.

    NFPA 350 helps organizations reduce the risks posed to workers in and around confined spaces, while it serves to better protect facilities, equipment, non-confined space personnel, and the public from injuries associated with confined space incidents. (Print, 95 pages, 2019)


    2016 Edition

     

    Protect workers from life-threatening hazards using first-time NFPA 350, Guide for Safe Confined Space Entry and Work.

    Every year, confined space incidents result in worker deaths, injuries, and serious illnesses. The danger is widespread because all facilities can have confined spaces -- from commercial buildings and hospitals to public works, utilities, and chemical/industrial facilities. By law in the United States, employers must comply with applicable regulations such as OSHA's 29 CFR 1910.146 and 29 CFR 1926 Subpart AA to ensure personnel safety. However, these regulations tell you 'what' to do, not 'how' to identify, evaluate, and control confined space hazards or conduct rescue response. To fill the information gap, NFPA introduces NFPA 350, Guide for Safe Confined Space Entry and Work.

    This all-new Guide is essential for anyone who enters confines spaces, along with facility managers, code officials, and safety personnel.

    NFPA 350 explains how to protect workers who enter into confined spaces for inspection or testing, or to perform associated work. Provisions address the full range of special hazards, including those present in water treatment, petrochemical, and agricultural facilities. It provides information to assist companies that need to comply with OSHA's Permit-Required Confined Spaces (29 CFR 1910.146) among other standards. In addition, NFPA 350 helps fire service and emergency services personnel develop and evaluate plans for confined space rescue in conjunction with NFPA 1670, Standard on Operations and Training for Technical Search and Rescue Incidents.

    Be prepared to recognize, evaluate, and control confined space entry hazards. Follow practices developed by experts for:

    • Identification of confined spaces
    • Evaluation of hazards
    • Atmospheric monitoring
    • Hazard elimination and control
    • Ventilation
    • Rescue and rescue planning
    • Confined space personnel duties, responsibilities, and competencies
    • Pre-entry evaluation forms and permits
    • Management of Change (MOC)
    • Prevention Through Design (PtD)

    A milestone for worker safety, NFPA 350 helps companies reduce the risks posed to workers in and around confined spaces, while it serves to protect facilities, equipment, non–confined space personnel, and the public from injuries associated with confined space incidents. (Softbound, 2016)

  • Program Review

    NFPA® has created a 5-minute, online program to help employees identify confined spaces. Developed by Nancy Pearce, CIH, Senior Fire Protection Engineer and staff liaison to the NFPA 350 Technical Committee, this interactive program is a great resource for you to share. Plus the program serves as a preview of the format of the online training series. Click here to start the program.

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  • Also in NFPA 350: Guide for Safe Confined Space Entry and Work