Uninterruptible Power Supply | UPS
Fermi Dirac Distribution Function
Fault of Electric Cable
Energy Bands in Crystals
Gallium Arsenide Semiconductor
Atomic Energy Levels
Power Plant Fire Protection System
Hydrant System for Power Plant Fire Protection
Medium Velocity Water Spray or MVWS System for Fire Protection
Foam Fire Protection System
Fire Detection and Alarm System
Gas Extinguishing System
Steam Boiler | Working principle and Types of Boiler
Methods of Firing Steam Boiler
Fire Tube Boiler | Operation and Types of Fire Tube Boiler
Water Tube Boiler | Operation and Types of Water Tube Boiler
Steam Boiler Furnace Grate Firebox Combustion Chamber of Furnace
Feed Water and Steam Circuit of Boiler
Boiler Feed Water Treatment Demineralization Reverse Osmosis Plant Deaerator
Coal Combustion Theory
Fluidized Bed Combustion | Types and Advantages of Fluidized Bed Combustion
Steam Condenser of Turbine
Jet Condenser | Low Level High Level Ejector Jet Condenser
Surface Steam Condenser
Economics of Power Generation
Cooling Tower Useful Terms and Cooling Tower Performance
Cooling Tower Material and Main Components
Electric Power Generation
Power Plants and Types of Power Plant
Thermal Power Generation Plant or Thermal Power Station
Hydro Power Plant | Construction Working and History of Hydro power plant
Nuclear Power Station or Nuclear Power Plant
Diesel Power Station
Why Supply Frequency is 50 Hz or 60 Hz?
Economiser in Thermal Power Plant | Economiser
MHD Generation or Magneto Hydro Dynamic Power Generation
Cogeneration | Combined Heat and Power
Thermoelectric Power Generators or Seebeck Power Generation
Cost of Electrical Energy
Gas Turbine Power Plant
Solar Energy Solar Electricity
Solar Energy System | History of Solar Energy
Types of Solar Power Station
Components of a Solar Electric Generating System
What is photovoltaic effect?
Staebler Wronski Effect
Working Principle of Photovoltaic Cell or Solar Cell
Characteristics of a Solar Cell and Parameters of a Solar Cell
Solar Cell Manufacturing Technology
What is a Solar PV Module?
What is Standalone Solar Electric System?
Steam Dryness Fraction
Superheated Steam and Steam Phase Diagram
Vapour Properties Mollier Chart Heat Capacities
What is Steam Flashing?
How to Calculate Steam Consumption During Plant Start Up
Effective Steam Distribution System
What is Water Hammer?
Engineering Thermodynamics Part 1
Science of Engineering Thermodynamics Part 2
Basic Law of Conservation and First Law of Thermodynamics
Carnot Cycle and Reversed Carnot Cycle
Enthalpy Entropy and Second Law of Thermodynamics
Rankine Cycle and Regenerative Feed Heating
Rankine Cycle for Closed Feed Water Heaters and Rankine Cycle Cogeneration
Ideal Verses Actual Rankine Cycle
Rankine Cycle Efficiency Improvement Techniques
Basic Wind Energy
Wind Turbine | Working Types and History of Wind Turbine
Theory of Wind Turbine
Fire Detection and Alarm System
Introduction of Fire Detection and Alarm SystemFire detectors are designed to detect one or more of the three characteristics of fire – smoke, heat and flame. Besides it every fire detection system must include manual call points (break glass), so that in the event of fire can be of immediate help. During a fire importance of activation of the occupants through alarm or bell is of at most vital and this can performed through alarm system. Fire alarm system shall be designed to provide round the clock security against fire in the complete power plant area.
Microprocessor based addressable analogue type fire alarm and detection system to be used for various building/areas to detect and provide alarm signal in the main fire alarm panel to be located in the central control room. Fire alarm will be repeated in a repeater alarm panel in the fire station. Main fire alarm panel annunciation shall be located in the control building. A repeater panel shall be provided in the fire station. Total no of annunciation shall be based on the specific plant requirement. One (1) siren of 10 Km range is envisaged to provide warning in the event of fire. In addition to it, PLC panel shall be provided at fire pump house and foam pump house.
Why Fire Detection and Alarm System RequiredFire detection and protection system is required for the following reasons:
- To detect fire in the area during the initial stage.
- To alert occupants, so that they escape the building safely.
- Summon trained personnel to take charge of controlling the fire as quickly as possible.
- To initiate automatic fire control and suppression system.
- To support and supervise the fire control and suppression system.
Type of Fire Detectors
- Smoke Detector
- Fire Detector
- Heat Detector
Area to be Covered under Fire Detection and Protection System
|Sl. No.||Fire Detection System||Area to be Covered|
|1||Smoke Detection System|
|2||Linear heat sensing cable detection system|
|3||Quartzoid bulb heat detection system|
Design Philosophy of Fire Detection and Alarm System
- The PLC based control panel at pump houses shall indicate the status of each pump, system pressure, operation of hydrant or spray system, failure of starting of pumps, healthiness and failure of batteries/ chargers, main supply, low level/very low level of water in the water supply system, status of compressors, selection station of batteries and chargers of panels and diesel engines etc. Alarms from these panels shall also be available at fire station in a repeater panel and at main fire panel alarm in control room.
- The PLC based addressable type panels at central Control rooms shall receive signal from sensor from various areas/equipments of the respective units.
- The Microprocessor based addressable panel shall evaluate the signals received from detectors, transmit the fire or trouble alarms (audio-visual) to prearranged points, supervise and monitor the complete fire detection and extinguishing circuits, initiate control functions like closure of fire doors, shutdown of draft fans, air conditioning and ventilation plant/equipment, closure of fire dampers in A/C and ventilation system etc. Opening smoke extraction vents, switching on smoke extraction equipment emergency lighting, tripping of transformer lockout relays etc.
- All the circuits from the detectors to the panels and the circuits from the panels to the actuating devices (such as solenoid valves, deluge valves, push buttons etc) shall be in closed loop type and in close watch for open-and-short-circuiting.
- Facilities shall be provided on the main fire alarm panel for sensitivity adjustment, isolation of detectors etc from the panel.
- Panel of fire detection, alarm monitoring and annunciation system shall operate on DC-supply, along with associated rectifier bank. Further each panel shall have the provision for batteries for charging.
- Each set of battery shall have the capacity for a period of 12 hours from the instant of charger/AC failure.
- Exit signs shall be painted o 18 gauge cold rolled sheet steel. This sheet should be suitable for fixing on walls or hanging from ceiling. Fire Exit/No Fire Exit shall be displayed on both sides of the Exit signs.