NFPA 92, Standard for Smoke Control Systems

NFPA^® 92 Standard for Smoke Control Systems, 2021 Edition

Chapter 1 Administration

1.1 Scope.
1.2 Purpose.
1.3 Retroactivity.
1.4 Equivalency.
1.5 Units and Formulas. (Reserved)

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 Design Fundamentals

4.1 Design Objectives.
4.2 Design Basis.
4.3 Design Approaches.
4.4 Design Criteria.
4.5 System Operation.
4.6 Stairwell Pressurization Systems.
4.7 Elevator Pressurization Systems.
4.8 Zoned Smoke Control.
4.9 Combination of Systems.
4.10 Vestibules.
4.11 Doors.

Chapter 5 Smoke Management Calculation Procedures

5.1 Introduction.
5.2 Design Fire.
5.3 Mass Consumption.
5.4 Smoke Layer Calculations.
5.5 Rate of Smoke Mass Production.
5.6 Number of Exhaust Inlets.
5.7 Volumetric Flow Rate.
5.8 Density of Smoke.
5.9 Varying Cross-Sectional Geometries and Complex Geometries.
5.10 Opposed Airflow.
5.11 Scaling Laws.

Chapter 6 Building Equipment and Controls

6.1 General.
6.2 Heating, Ventilating, and Air-Conditioning (HVAC) Equipment.
6.3 Smoke Dampers.
6.4 Smoke Control Systems.
6.5 Energy Management.
6.6 Materials.
6.7 Electric Services Installation.

Chapter 7 Smoke Control System Documentation

7.1 Documentation Required.
7.2 Detailed Design Report.
7.3 Operations and Maintenance Manual.

Chapter 8 Testing

8.1 General.
8.2 Preliminary Building Inspections.
8.3 Component System Testing.
8.4 Acceptance Testing.
8.5 Testing Documentation.
8.6 Periodic Testing.
8.7 Modifications.

Annex A Explanatory Material
Annex B Predicting the Rate of Heat Release of Fires
Annex C Computer-Based Models for Atria and Malls
Annex D Additional Design Objectives
Annex E Stratification of Smoke
Annex F Types of Stairwell Pressurization Systems
Annex G HVAC Air-Handling System Types
Annex H Fire Fighters’ Smoke Control Station (FSCS) Considerations
Annex I Information on Testing for Leakage Between Smoke Zones
Annex J Advisory Information on Acceptance Testing
Annex K Example Problems Illustrating the Use of Equations
Annex L Comparison of Equations
Annex M Tenability
Annex N Informational References

THE NFPA HANDBOOKS DIFFER FROM CODES AND STANDARDS

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NFPA codes and standards both provide requirements for achieving outcomes. Handbooks take a deeper dive, providing the full text of a code or standard as well as expert commentary and features such as graphics, decision trees, testing procedures, case studies, sample forms and checklists, and other helpful aids to give a better understanding of the reasoning behind the requirements and how to apply them.

JUST REMEMBER:

• A code or standard is a framework—a set of rules to follow with a goal to achieve a certain result
• A handbook is a connector—linking requirements to application by helping you understand the reasoning behind a code or standard

The simplest way to think about it is that codes and standards list the technical requirements while handbooks explain those requirements to clarify how to apply them.

2018 Edition

Design, implement, and assess smoke control systems to effectively manage smoke in the event of a fire.

NFPA 92, Standard for Smoke Control Systems gives fire protection professionals and public safety officials an adoptable and enforceable source for all the requirements previously found in two Standards: NFPA 92A, Standard for Smoke-Control Systems Utilizing Barriers and Pressure Differences and NFPA 92B, Standard for Smoke Management Systems in Malls, Atria, and Large Spaces.

A one-stop reference for enforcers, engineers, architects, and industry professionals concerned with or responsible for public safety.

NFPA 92 covers all types of systems used to address the impact of smoke from fire, with mandatory provisions for the design, installation, and testing of both new and retrofitted smoke control systems in buildings—including openings and leakage through egress doors in stairways. Chapters address:

• Fully revised and correlated definitions
• Design fundamentals
• Smoke management calculation procedures
• Building equipment and controls
• Smoke control system documentation
• Testing

New requirements and a new Annex in the 2018 edition help users ensure smoke control systems are up to the task:

• Added requirements address verification of dedicated smoke control equipment through use of the weekly self-test function.
• An Annex on tenability provides first-time guidelines for designers to assess tenable conditions in spaces protected by smoke control systems, in connected spaces, and of means of egress elements during the operation of a smoke control system.

In addition to provisions, NFPA 92 includes comprehensive explanatory material filled with tables, charts, and state-of-the-art calculations; techniques for predicting the rate of heat release of fires; information on computer-based models for atria and malls; facts on additional design objectives; stratification of smoke; types of stairwell pressurization systems; HVAC air-handling systems; and more. (Print, 92 pp., 2018)

2015 Edition

The 2015 NFPA 92 is your one-stop source for advanced fire protection using smoke control systems.

Design smoke control systems to effectively manage smoke in the event of a fire in atriums or high-rise building stairwells. NFPA 92, Standard for Smoke Control Systems gives fire protection professionals and public safety officials an adoptable and enforceable source for all the requirements previously found in two Standards: NFPA 92A, Standard for Smoke-Control Systems Utilizing Barriers and Pressure Differences and NFPA 92B, Standard for Smoke Management Systems in Malls, Atria, and Large Spaces.

A one-stop reference for enforcers, engineers, architects, and industry professionals concerned with or responsible for public safety.

NFPA 92 covers all types of systems used to address the impact of smoke from fire, with mandatory provisions for the design, installation, and testing of both new and retrofitted smoke control systems in buildings—including openings and leakage through egress doors in stairways. Chapters address:

• Fully revised and correlated definitions
• Design fundamentals
• Smoke management calculation procedures
• Building equipment and controls
• Smoke control system documentation
• Testing

Changes in the 2015 NFPA 92 include:

• Clarified requirements for draft curtain materials, so designers and enforcers can make informed decisions about their acceptability

Annexes contain helpful explanatory material drawn from both NFPA 92A and NFPA 92B.

Work with comprehensive explanatory material filled with tables, charts, and state-of-the-art calculations; techniques for predicting the rate of heat release of fires; information on computer-based models for atria and malls; facts on additional design objectives; stratification of smoke; types of stairwell pressurization systems; HVAC air-handling systems; and more. (Softbound, 80 pp., 2015)

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