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FIRE DETECTION & ALARM SYSTEMS

Chapter I
FIRE DETECTION & ALARM SYSTEMS
 
Chapter II
Fire Signature
2.1 What is meant by Fire Signature
 
2.1.1 Products of Fire
2.1.2 Stages of Development
2.1.3 Speed of Development
2.1.4 Basis of Fire Detection
 
Chapter III
Fire Detectors
3.1 What is fire detector
3.2 How the fire could be detected by fire detector
3.3 classification of Detector
 
3.3.1 Based on what they detect
3.3.2 Based on their use
3.3.3 Based on operational destination
3.4 Types of detectors
 
3.4.1 Heat Detectors
 
3.4.1.1 Fixed temperature type
 
3.4.1.1a Bimetallic strip type
3.4.1.1b Electrical conductivity
3.4.1.1c Fusible Eutectic Alloy
3.4.1.1d Fusible tubing
3.4.1.1e Thermistor Electric
3.4.1.2 Rate of Rise type
 
3.4.1.2a Pneumatic Rate of Rise
3.4.1.2b Bimetallic Rate of Rise
3.4.1.2c Thermistor Rate of rise
3.4.1.3 Rate Compensation type
3.4.1.4 Fluid Expansion type (spot & line)
3.4.1.5 Linear heat sensing cables & conductor
3.4.2 Smoke detector
 
3.4.2.1 Ionisation type Smoke detector
3.4.2.2 Optical type smoke detectors
 
3.4.2.2a Scattering type
3.4.2.2b Obscuration type
3.4.2.3 Beam detector (Heat & Smoke)
3.4.2.4 Air sampling type
 
3.4.2.4a Continuous air sampling smoke detection
3.4.2.4b Cloud chamber principal air sampling smoke detection
3.4.2.4c Spot type Aspirating Detection
3.4.3 Flame detectors
 
3.4.3.1 Electromagnetic radiation fast response detectors
 
3.4.3.1a Infrared flame detector
3.4.3.1b Ultra violet flame detectors
3.4.3.1c UV/RI Detectors
3.4.3.1d Spark / Ember detectors
3.4.3.1e Laser beam type detectors
3.4.2.4b Cloud chamber principal air sampling smoke detection
3.4.2.4c Spot type Aspirating Detection
3.4.4 Gas sensing detectors
 
3.4.4.1 Semiconductor based
3.4.4.2 Catalytic element based
3.4.4.1 Ultrasonic Based
 
Chapter – IV
Selection of Detectors
4.1 What is expected from a Fire Detector?
4.2 Limitations of Fire Detectors
4.3 Factors of performance of Fire Detectors
 
4.3.1 Comparison of performance of various detectors
4.4 Characteristics of Test fire & Suitability of Fire Detector
4.5 Inputs for selection of Fire Detectors
4.6

Recommended choice of Fire Detectors for various Occupancies,

limitations & Preferences of their Use.
 
4.6.1 Heat Detectors
 
4.6.1.1 Application of heat detectors
4.6.2 Smoke Detectors
 
4.6.2.1 Application of Smoke Detectors
4.6.3 Flame / Radiation Detectors
 
4.6.3.1 Application of Flame Detector
4.7 Manual Call Points
 
Chapter V
Enclosure Fire Dynamics & Spacing and Placing of Detectors & Manual Call Points
5.1 Is selection Enough
5.2 Various features of building & Enclosure Fire Dynamics
 
5.2.1 Features of Ceiling
 
5.2.1.1 Features of Ceiling
5.2.1.2 Types of Ceilings
5.2.2 Internal Partitions
5.2.3 Air conditioning/Ventilating Systems
5.2.4 Electric cable Trenches & Cable Trays
5.2.5 Rack Storages
5.2.6 Other Features
5.3 Common provision for spacing & Placing of spot Detectors
 
5.3.1 Roof corner Placement
5.3.2 Smooth Ceiling
5.3.3 Distance from any corner
5.3.4 Spacing for unusual wall Configuration
5.3.5 Spacing for the corridor
5.3.6 Spacing of Peaked Ceiling
5.3.7 Provision for floor mounting partitions
5.3.8 Provision inside the false roof/floor/void
5.3.9 Maximum spacing & over all limits
5.4 Specific provision of heat detectors
 
5.4.1 Spacing of ceiling with joist construction
5.4.2 Provision of Detectors in Beamed ceiling
5.4.3 Effect of ceiling height on placing
5.5 Specific provisions for smoke detectors
 
5.5.1 Spacing of ceiling with joist construction
5.5.2 Spacing for beamed construction
5.5.3 Effect of height on ceiling
5.5.4 Provision of Placing of fire detectors near diffuser or inside air handling duct
5.6 Spacing provisions for line type detectors
 
5.6.1 Spacing for projected beam (smoke) detection
 
5.6.1.1 Spacing of beam detectors
5.6.2 LHS Cable/Conductors
5.7 Specific provisions for flame detectors
 
5.7.1 Placement for flame detectors
5.7.2 General spacing Guideline for flame detectors
5.8 Specific provisions for gas sensing fire detectors
5.9 Other provisions for various locations
5.10 Provision for Manual Call Point
 
5.10.1 Placing of Manual Call Point
 
Chapter VI
Classification of Fire Alarm Systems And Various Basic Circuits
6.1 Classification of Fire alarm systems
 
6.1.1 Local System
6.1.2 Auxiliary System
6.1.3 Central Station System
6.2 Importance of Local System
6.3 Classification of Fire alarm circuit
 
6.3.1 Working Initiation Device Circuits
6.3.2 Circuit Problems.
6.3.3 Alarm Verification Features
6.4 Notification Appliance Circuits
 
6.4 Class B Notification Appliance Circuits
6.4 Class A Notification Appliance Circuits
6.5 Signaling Line Circuits
6.6 Suppression / actuation device circuits
6.7 Fire alarm system plan
6.8 Limitation of Hardwire System
 
Chapter VII
Control and Indicating Panels
7.1 The Basic Function of Control & Indicating Panels
7.2 Need of Zoning
 
7.2.1 Size and number of zones
7.3 The types of Control and Indicating Panels
 
7.3.1 Class of circuits chosen and also detectors used in system (Based on the performance level)
7.3.2 Class of circuits chosen and also detectors used in system (Based on the nature of location and purpose of use)
7.4 Setting of Control and indicating panels
 
7.4.1 Main Control and indicating panel (C&I panel)
7.4.2 Sector/Zonal panel
7.4.3 Spot Indicators
7.5 Function & Performance of Control Panel & facilities provided there on.
 
7.5.1 Functions to be performed by Control Panel.
7.5.2 Basic facilities provided on control panel.
7.5.3 Additional / optional facilities could also be provided on CI Panel.
7.5.4 General Provision & Compliance on C I Panel
7.6 Control Room and control & indicating panel (C & I Panel )
 
7.6.1 The locations main control room and C & I Panel
7.6.2 Sector / Zonal Panels
7.6.3 Spot indicators
7.7 Alarm sounders, Manual Call points & Public Address System
 
7.7.1 Alarm Sounders
7.7.2 The other compliances of alarm sounders
7.7.3 Manual Call Points.
7.7.4 Public Address System (PAS).
7.8 Power Supply for Fire Alarm System.
 
7.8.1 Criticality of power supply for fire alarm system.
7.8.2 Extent of Power Supply and its reliability
7.8.3 Stand-by Power Supplies
7.9 Wiring & Cabling for Fire Alarm System
 
7.9.1 Suitability of wiring and cabling.
7.9.2 Aspect of Wiring and cables
7.9.3 Protection of wiring & cabling against physical and fire damage.
 
Chapter VIII
Inspection, Tests And Maintenance Of Fire Alarm And Detection Systems
8.1 Importance of System Up-Keep
8.2 Initial Installation, Inspection Operational and functional Tests
 
8.2.1 Functional Tests
8.2.2 Operational Tests
8.3 Arrangements for Servicing and Maintenance
 
8.3.1 Entrusting the job to proper agency / persons
8.4 Maintenance Schedule
 
8.4.1 Daily Attention by the User
8.4.2 Weekly Attention by the User
8.4.3 Quarterly inspection and test
8.4.4 Annual inspection Tests
8.4.5 Cleaning and Maintenance
8.4.6 Tests Following an Alarm or Fire
8.4.7 Spares
8.4.8 Third Party Audit
 
Chapter IX
Latest Trends In Fire Detection And Alarm Systems
9.1 Expectation from detection system and performance of Detecting Industry.
 
9.2.1 Conventional and addressable fire detection systems
9.2.2 At a glance comparison of ‘Conventional’ & ‘Analogue’ Addressing system.
9.2 Latest trends in fire detection techniques
 
9.2.1 Optical versus ionisation detectors – what is preferred and why?
9.2.2 Multi-sensor detectors
9.2.2 Combined smoke, heat and gas detectors
9.2.2 High performance point detectors
9.2.2 Limitations of Beam detectors & efforts to overcome.
9.2.2 Wireless detectors
9.3 People’s psyche and need of the day.
 
 
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