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NFPA 502 2023

NFPA 502 2023

$80.71

NFPA 502: Standard for Road Tunnels, Bridges, and Other Limited Access Highways

Published By Publication Date Number of Pages
NFPA 2023 88
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Tackle today’s structural protection and emergency readiness challenges to reduce hazards and help safeguard lives. Introducing your updated fire and life safety sidekick: NFPA® 502, Standard for Road Tunnels, Bridges, and Other Limited Access Highways—the international standard for limited access highways, road tunnels, bridges, elevated highways, depressed highways, and roadways that are located beneath air-right structures. With comprehensive provisions for ventilation, means of egress, electrical systems, standpipe and water supply, and traffic control and communications, NFPA 502 is essential for designers, engineers, architects, authorities having jurisdictions (AHJs), and state and federal regulators. The 2023 update also includes: New Annex D that provides guidance on controlling smoke formation in tunnels with critical velocity calculation methods Recategorization of tunnels to reduce the number of categories New requirements covering safety features required for Category A tunnels Updates to Annex G to incorporate the latest developments and hazards for alternative fuel vehicle technology Updated requirements to address recognition of various non-listed systems Added references to other standards for the use of alternative time-temperature curves when testing passive fire protection materials Updated design objectives Updated requirements to remove unenforceable terms, update references, and make other editorial corrections

PDF Catalog

PDF Pages PDF Title
10 Chapter 1 Administration
1.1 Scope.
1.2 Purpose.
1.3 Application.
1.4 Retroactivity.
1.5 Equivalency.
1.6 Units.
11 Chapter 2 Referenced Publications
2.1 General.
2.2 NFPA Publications.
2.3 Other Publications.
12 2.4 References for Extracts in Mandatory Sections.
Chapter 3 Definitions
3.1 General.
3.2 NFPA Official Definitions.
3.3 General Definitions.
15 Chapter 4 General Requirements
4.1 Level of Fire Protection.
4.2 Safeguards During Construction.
4.3 Fire Protection and Fire-Life Safety Factors.
4.4 Emergency Response Plan.
4.5 Emergency Communications.
16 4.6 Signage.
4.7 Commissioning and Integrated Testing.
4.8 Noncombustible Material.
4.9 Structural Anchorage.
Chapter 5 Limited Access Highways
5.1 General.
5.2 Traffic Control.
5.3 Fire Apparatus.
5.4 Protection of Structural Elements.
5.5 Incident Detection. (Reserved)
5.6 Fire Hydrants. (Reserved)
5.7 Drainage.
Chapter 6 Bridges and Elevated Highways
6.1 General.
17 6.2 Application.
6.3 Protection of Structural Elements.
6.4 Incident Detection.
6.5 Traffic Control.
6.6 Standpipe, Fire Hydrants, and Water Supply.
6.7 Portable Fire Extinguishers.
6.8 Drainage.
6.9 Hazardous Locations.
18 6.10 Control of Hazardous Materials.
6.11 Joints Between Structural Elements.
Chapter 7 Road Tunnels
7.1 General.
7.2 Application.
7.3 Protection of Structural Elements.
7.4 Fire Alarm and Detection.
19 7.5 Emergency Communications Systems — Two-Way Radio Communication Enhancement System.
7.6 Tunnel Closure and Traffic Control.
7.7 Fire Apparatus. (Reserved)
7.8 Standpipe, Fire Hydrants, and Water Supply.
7.9 Portable Fire Extinguishers.
7.10 Fixed Water-Based Fire-FightingFirefighting Systems.
7.11 Emergency Ventilation.
20 7.12 Tunnel Drainage System.
7.13 Alternative Fuels. (Reserved)
7.14 Control of Hazardous Materials.
7.15 Flammable and Combustible Environmental Hazards.
7.16 Means of Egress.
21 7.17 Acceptance Test.
Chapter 8 Roadways Beneath Air-Right Structures
8.1 General.
8.2 Application.
8.3 Traffic Control.
8.4 Protection of Structure.
22 8.5 Emergency Ventilation.
8.6 Drainage System.
8.7 Control of Hazardous Materials.
8.8 Emergency Response Plan.
8.9 Standpipe, Fire Hydrants, and Water Supply.
8.10 Acceptance Test.
Chapter 9 Fixed Water-Based Firefighting Systems
9.1 General.
9.2 Design Objectives.
23 9.3 Water Supply.
9.4 Performance Evaluation.
9.5 Tunnel Parameters.
9.6 System Design and Installation Documentation.
9.7 Engineering Design Requirements.
24 Chapter 10 Standpipe Systems
10.1 General.
10.2 Water Supply.
10.3 Fire Department Connections.
10.4 Hose Connections.
10.5 Fire Pumps.
10.6 Identification Signs.
Chapter 11 Emergency Ventilation
11.1 General.
25 11.2 Smoke Control.
11.3 Design Objectives.
11.4 Basis of Design.
11.5 Fans.
11.6 Dampers.
26 11.7 Sound Attenuators.
11.8 Controls.
11.9 Flammable and Combustible Liquids Intrusion.
Chapter 12 Electrical Systems
12.1 General.
12.2 Wiring Methods.
27 12.3 Installation Methods.
12.4 Emergency Power.
12.5 Reliability.
28 12.6 Emergency Lighting.
12.7 Security Plan.
12.8 Wayfinding Lighting.
Chapter 13 Emergency Response
13.1 General.
13.2 Emergency Incidents.
13.3 Emergency Response Plan.
29 13.4 Participating Agencies.
13.5 Operations Control Center (OCC).
13.6 Liaisons.
13.7 Emergency.
13.8 Training, Exercises, Drills, and Critiques.
30 13.9 Records.
Chapter 14 Regulated and Unregulated Cargoes
14.1 General.
Chapter 15 Periodic Testing
15.1 General.
Annex A Explanatory Material
46 Annex B Tenable Environment
48 Annex C Temperature and Velocity Criteria
49 Annex D Smoke Control
51 Annex E Fixed Water-Based Systems in Road Tunnels
56 Annex F Emergency Response Plan Outline
Annex G Alternative Fuels
60 Annex H The Memorial Tunnel Fire Ventilation Test Program
63 Annex I Tunnel Ventilation System Concepts
66 Annex J Control of Road Tunnel Emergency Ventilation Systems
67 Annex K Fire Apparatus
Annex L Motorist Education
68 Annex M Automatic Fire Detection Systems
Annex N Autonomous Vehicles
71 Annex O Informational References

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NFPA 502 2023
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