2010 NFPA 72 Chapter 24

Understanding Emergency Communication Systems (ECS)

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The following chart provides an overview of NFPA Chapter 24 that will hopefully make understanding the code easier. It was built to help you use NFPA Chapter 24 to develop your master mass notification emergency response plan.

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How to Use This Chart

Read the chart both vertically and horizontally in context with the applicaton that you intend to implement.

Hover over each section and image for more in-depth information.

24.1 Application

In compliance with this chapter:

  • Application
  • Installation
  • Performance of ECS & its components
Hospital University Amsterdam Oil Refinery Military Installation / Barracks College Campus NFPA 1600 Standard on Disaster / Emergency Management and Business Continuity Programs 2010 Edition

The requirements of Chapter 14 shall apply.

24.2 Purpose

Communicate information necessary to facilitate an appropriate response and action.

Mass Notification Network

Establish minimum required levels of performance, reliability and quality of installation.

Shooter Fire Fire Truck

Communicate information about emergencies: fire, human-caused events, dangerous situations & natural disasters.

NFPA 1620 Standard for Pre-Incident Planning 2010 Edition
24.3 General

Provide Intelligible voice message (refer to common intelligibility scale)

Common Intelligibility Scale Giant Voice

Required Emergency Communication Systems

(Pursue AHJ approval)

Police Hat

Pathway Survivability for In-Building fire emergency voice/ alarm communication

FleX-Net Mass Notification Network

Pathway survivability as determined by risk analysis

24.4 One-Way Communications System

One-Way ECS In-Building EVACS

Design for intelligibility & Audio

Speaker Emergency Intercom (ADS)

Acoustically Distinguishable Spaces

Office Building

MNS Components


Notification Appliance Network


Local Operating Console

Interface to other System and Alerting Sources.

Emergency Response plan comply with NFPA 1600 & 1620

24.5 Two-Way In-Building ECS

Two-Way Telephone Wired Emergency Services Communication Systems

In Building Two Way Communication

Two-Way Telephone Collocated with In-Building

Fire emergency voice alarm communication equipment


Signal Booster Components- compatible with analog and digital communication simultaneously

Signal Booster Components
24.5.4 Elevator EMS

Comply with ANSI/ ASMEA17.1a/ CSA B44a, Safety Code for Elevators and Escalators

Elevators and Escalators

Area of refuge stations with hands free communication

Access Control
24.6 Information, Command & Control

Communication control station for emergency communication system

Emergency Communication Control Unit (ECCU) shall be located at each Central Control Station as per the risk analysis as defined in the Emergency Response Plan

Emergency Communication Control Unit

Multiple Emergency Communication Control Units (MECCU) shall be permitted

Multiple ECCU Units

Other Systems-Central Control Station shall be capable to interface with: telephone dialers, tone alert systems, pagers, textual devices and visual control signs as defined in the Emergency Response Plan

Interface With Telephone Dialers Open Graphic Navigator
24.7 Performance Based Design of MNS

Goals and Objectives

  1. Risk analysis & design criteria
  2. Timely Target Audience Broadcasting
  3. Design and performance in accordance
    with risk
  4. System Survivability
  5. Message Initiation by safety and security stakeholders

Risk Analysis

  • Number of persons
  • Type of occupancies
  • Anticipated threat
  • Extent of notification
  • ECS Effectiveness
  • Emergency response personnel
7-1 7-2 Emergency Response Personnel Risk Analysis Plan

To maintain reliable performance of the ECS specify testing requirements.

See Chapter 14.


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