Fire & Gas Detection System

 Introduction

Brief History

Objectives

Organization

1     Conventional Fire Detection Systems

1.1  Fire Zones

1.2  Fire Detection System

1.2.1    Zone Modules

1.2.2    Common Facilities Module

1.2.3    Logic Modules

1.2.4    Monitored Output Modules

1.2.5    Relay Modules

1.2.6    Power Supply

1.2.7    Traditional Rack-Based System

1.2.8    System Schematic

1.2.9    System Logic

1.2.10      Operator Interface

2     Addressable Fire Detection Systems

2.1  Conventional Addressable Fire Detection Systems

2.2  Operation of Conventional Addressable Fire Detection Systems

2.2.1    Detectors and Call Points

2.2.2    Output Devices

2.2.3    Operator Interface

2.2.4    Typical Schematic of Complex Addressable System

2.3  Analog Addressable Systems

2.3.1    Operation of Analog Addressable Systems

2.3.2    Pre-Alarm Warning

2.3.3    Alarm

2.3.4    Alarm Threshold Compensation

2.3.5    Detector Condition Monitoring

2.3.6    Detector Sensitivity

3     Selection of a Fire Detection System

4     Flame Detection Systems

4.1  Flame Detection Systems

4.1.1    Flame Controller Cards

4.1.2    Logic Cards

4.1.3    Relay Cards

4.1.4    Common Facilities Module

4.1.5    Annunciator Panels

4.1.6    Matrix Panels

4.1.7    Mimic Panels

4.1.8    Graphic Screens

4.2  Selecting A Flame Detector

4.2.1    Comparison Between Flame Detectors

4.2.2    Recommended Use of Flame Detectors

4.2.3    Maximum Distance from Flame Detector to Fire*

4.3  Location of Flame Detectors

4.4  Planning and Installation of Flame Detectors

5     Gas Detection Systems

5.1  Flammable Gas/Vapor Risk

5.2  Table of Common Flammable Gases and Vapors

5.3  Oxygen Risk

5.4  Toxic Gas Risk

5.5  Data on Common Toxic Gases

5.6  Equipment Safety

5.6.1    Intrinsic safety requirements

5.6.2    Flameproof requirements

5.6.3    Gas Groupings

5.6.4    Temperature Classifications

5.6.5    Approval Codes

5.7  Combustible Gas Detectors

5.7.1    Catalytic (Pellistor) Detectors

5.7.2    Thermal Conductivity Detectors

5.7.3    Semiconductor Detectors

5.8  Infrared Absorption Gas Detectors

5.9  Toxic Gas Detectors

5.9.1    Electrochemical Detectors

5.10    Operator Interface to Gas Detection Systems

5.10.1      Gas Controller Cards

5.10.2      Logic Cards

5.10.3      Relay Cards

5.10.4      Common Facilities Module

5.10.5      Annunciator Panels

5.10.6      Matrix Panels

5.10.7      Mimic Panels

5.10.8      Graphic Screens

5.11    Selecting Gas Detectors

5.12    Location of Gas Detectors

5.13    Planning and Installation of Gas Detectors

6     Fire Extinguishing Systems

6.1  Deluge Extinguishing System

6.2  Carbon Dioxide Extinguishing System

6.3  Inert Gas Extinguishing System

6.4  Foam Extinguishing System

6.4.1    How Foam Extinguishes a Fire

6.4.2    Foaming Agents

6.4.3    Foam Extinguishing Systems

6.5  Operator Interface to Extinguishing Systems

6.5.1    Agent Release Cards

6.5.2    Annunciator Panels

6.5.3    Matrix Panels

6.5.4    Mimic Panels

6.5.5    Graphic Screens

7     Integrated F&G Detection Systems

7.1  Integrated PLC-Based