NFPA 350 Guide for Safe Confined Space Entry and Work

NFPA 350 Guide for Safe Confined Space Entry and Work / Ed. 2022

ID 24494 | 28.08.2025 / Preview attached

This guide provides information to protect workers from confined space hazards. This guide supplements existing confined space regulations, standards, and work practices by providing additional guidance for safe confined space entry and work. References are provided throughout the guide and annexes to direct the reader to other regulations and standards or other content that might be applicable.
__________

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. (Print, 96 pp., 2022)

Table of Contents

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

Collegati

Allegati (Riservati) Abbonati Normazione

Allegati

	Descrizione	Lingua	Dimensioni	Downloads
	NFPA 350 2022 Preview Abbonati Normazione	IT	1530 kB	1