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

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Revisions in NFPA 502 work to ensure the fire protection and life safety of road tunnels and bridges.

Limited-access highways, tunnels, bridges, elevated highways, and air right structures present unique fire protection and life safety challenges. NFPA 502: Standard for Road Tunnels, Bridges, and Other Limited Access Highways provides designers, AHJs, and state and federal regulators with guidelines for the construction, operation, maintenance, and fire protection of these venues to mitigate hazards, maintain structural integrity, and protect lives.

This important international Standard also covers traffic control, standpipe and water supply, control of hazardous materials, emergency ventilation, electrical systems, and emergency response.

Key updates in the 2014 edition of NFPA 502:

  • Clarifications for water based fire-fighting and standpipe requirements
  • Updated criteria for electrical systems, emergency ventilation systems, emergency exits, and emergency response
  • Annex material now includes a comprehensive review of required systems based on tunnel category

Order now -- work with the latest information to safeguard the public on limited-access highways, road tunnels, and bridges. (Softbound, 56 pp., 2014)

NFPA® 502 Standard for Road Tunnels, Bridges, and Other Limited Access Highways 2014 Edition

Chapter 1 Administration
1.1 Scope
1.2 Purpose
1.3 Application
1.4 Retroactivity
1.5 Equivalency
1.6 Units
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 General Requirements
4.1 Characteristics 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
4.6 Signage
4.7 Commissioning and Integrated Testing
4.8 Noncombustible Material
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
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
6.10 Control of Hazardous Materials
Chapter 7 Road Tunnels
7.1 General
7.2 Application
7.3 Protection of Structural Elements
7.4 Fire Alarm and Detection
7.5 Emergency Communications Systems - Two-Way Radio Communication Enhancement System
7.6 Tunnel Closure and Traffic Control
7.7 Fire Apparatus
7.8 Standpipe, Fire Hydrants, and Water Supply
7.9 Portable Fire Extinguishers
7.10 Fixed Water-Based Fire-Fighting Systems
7.11 Emergency Ventilation
7.12 Tunnel Drainage System
7.13 Alternative Fuels
7.14 Control of Hazardous Materials
7.15 Flammable and Combustible Environmental Hazards
7.16 Means of Egress
Chapter 8 Roadways Beneath Air-Right Structures
8.1 General
8.2 Application
8.3 Traffic Control
8.4 Protection of Structure
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 Fire-Fighting Systems
9.1 General
9.2 Design Objectives
9.3 Performance Evaluation
9.4 Tunnel Parameters
9.5 System Design and Installation Documentation
9.6 Engineering Design Requirements
Chapter 10 Standpipe and Water Supply
10.1 Standpipe Systems
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
11.2 Smoke Control
11.3 Design Objectives
11.4 Basis of Design
11.5 Fans
11.6 Dampers
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
12.3 Installation Methods
12.4 Emergency Power
12.5 Reliability
12.6 Emergency Lighting
12.7 Security Plan
Chapter 13 Emergency Response
13.1 General
13.2 Emergencies
13.3 Emergency Response Plan
13.4 Participating Agencies
13.5 Operations Control Center (OCC)
13.6 Liaisons
13.7 Emergency
13.8 Training, Exercises, Drills, and Critiques
13.9 Records
Chapter 14 Regulated and Unregulated Cargoes
14.1 General
Chapter 15 Periodic Testing
15.1 Periodic Testing
Annex A Explanatory Material
Annex B Tenable Environment
Annex C Temperature and Velocity Criteria
Annex D Critical Velocity Calculations
Annex E Water-Based Fixed Fire-Fighting Systems in Road Tunnels
Annex F Emergency Response Plan Outline
Annex G Alternative Fuels
Annex H The Memorial Tunnel Fire Ventilation Test Program
Annex I Tunnel Ventilation System Concepts
Annex J Control of Road Tunnel Emergency Ventilation Systems
Annex K Fire Apparatus
Annex L Motorist Education
Annex M Informational References