Cable fire behavior and testing in the built environment
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Cable Fire Behavior and Testing in the Built Environment . J. Thomas Chapin, Ph.D. – Lucent Technologies, Bell Laboratories. Requirements National codes Local codes Standards. Building Owners & Managers. Business Continuity. AHJs (Code Enforcers) Fire chief Fire marshal Code officials.

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Cable fire behavior and testing in the built environment

Cable Fire Behavior and Testing in the Built Environment

J. Thomas Chapin, Ph.D. – Lucent Technologies, Bell Laboratories


The built environment

Building Owners & Managers

Business Continuity

  • AHJs

  • (Code Enforcers)

  • Fire chief

  • Fire marshal

  • Code officials

  • Construction Industry

  • Architects

  • Contractors

  • Engineers

  • Insurance Companies

  • Property Loss prevention

Manufacturers of Fire Safety & Security Equipment

Conformity Assessment

Consumers

Life Safety

  • Communication Systems

  • Building Products and Furnishings

  • Resistance

  • Suppression

  • Research

  • Detectors & Alarms

Fire Services

The Built Environment


Rationale for cable investigation
Rationale for Cable Investigation

  • Increased installation of data cable andstructured wiring in buildings (20 billion feet of cable was installed in buildings in the US in 2003).

  • Cable often not protected by metal conduit.

  • Abandoned cable accumulating in buildings.

  • Changing construction practices for buildings.

  • Harmonization of world fire standards.

  • Recent fire disasters in buildings.




Structured wiring concept
Structured Wiring Concept

Indoor cable covered by NFPA 70, National Electrical Code








Building cable inspections
Building Cable Inspections

Telecom and energy cable installations




Us cable hierarchy
US Cable Hierarchy

US

Requirement(s)

NFPA 262

Steiner Tunnel

Flame spread, peak and average smoke OD

High

UL 1666 Vertical

Riser Test

Flame spread

Fire Performance

UL 1685 Vertical

Tray Test

Flame spread, char, total and average smoke

VW-1 Bunsen

Burner Test

Char

Low


Horizontal plenum cable fire test
Horizontal Plenum Cable Fire Test

Requirements:

Flame spread

Peak and average smoke


Vertical cable fire tests
Vertical Cable Fire Tests

Requirements:

Flame spread

Char

Total and average smoke (optional)


Vertical cable and wire tests
Vertical Cable and Wire Tests

Requirements:

Flame spread

Char


Assessment of cable infrastructure in buildings
Assessment of Cable Infrastructure in Buildings

  • Fires propagate through buildings by different routes:

    • Horizontal paths through concealed ceilings and floors

    • Vertical paths through riser shafts

    • Open areas within rooms and hallways

  • Cable fire performance should reflect the installation hazard.

  • Cable network design can accommodate different fire performance levels (cost and functionality).

Key Conclusion – put the right cable in the right place


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