Fire Protection System

Sayma Enterprise | Best Fire Protection Systems provider in Bangladesh.WE ARE WORKING WITH SAME WORLD RECOGNIZED BRAND. IT HAS CAPABILITY TO SERVE QUALITY WORK AND PRODUCTS TO CLIENTS. OUR ENGINEERS, MARKETING PEOPLE & TECHNICIAN ARE WELL SKILLED TO SATISFY OUR VALUED CUSTOMERS. ALSO WE PROVIDE ALL IT AND SECURITY SOLUTION RELATED CONSULTANCY SERVICES IF NEEDED AT FREE OF COST SO WE WANT TO MAKE STEPS AHEAD WITH YOU.
OUR ENGINEERS, MARKETING PEOPLE & TECHNICIAN ARE WELL SKILLED TO SATISFY OUR VALUED CUSTOMERS. ALSO WE PROVIDE ALL IT AND SECURITY SOLUTION RELATED CONSULTANCY SERVICES IF NEEDED AT FREE OF COST SO WE WANT TO MAKE STEPS AHEAD WITH YOU.
Our Managed IT Solutions And Technical Services Provider Gives You Proactive Support Across Your Entire All Technology Solution. Our Unique Difference Is Our Evergreen Solution – We Remain Agile And Don’t Tie You Down Or Into A Long Contract. We Know About Systems Change And Businesses Change, So Your Platform Needs To Change With You.
SAYMA ENTERPRISE After 9 Years Of Establishment, Can Now Proudly Declare That They Have Pioneered And Accomplished Their Goal. Our Engineers, Marketing People & Technician Are Well Skilled To Satisfy Our Valued Customers. Also We Provide All It And Security Solution Related Consultancy Services If Needed At Free Of Cost So We Want To Make Steps Ahead With You.
We Work & Play with transparency, trust& team work, we feel proud on everything we do and make sure that everyone who is connected with us feel the same.
Commitment to innovation and improvement to ensure value creation for clients. Surpass customer expectation for on time delivery within budget Strive constantly to improve ourselves, our teams, our services and products. Promote an environment where fresh ideas and creativity are nurtured and where opportunity is the impetus for success of our employees. Recognized for the disciplined approach towards offering the best value of pleasure to every customer, we shake hand with!
Sayma Enterprise | Best Fire Protection Systems provider in Bangladesh.Fire Protection Systems Solutions, Fire Protection System | Fire Fighting Products Bangladesh, Best fire Safety Company in Bangladseh || fire protection, Best Fire Protection Companies in Bangladesh. Best Fire Protection Service Provider Company in bd, Fire Protection System | Fire Fighting Products Bangladesh, Fire sprinkler system company bd, Fire Protection Solutions in Bangladesh, Fire door and Fire equipment supplier in Bangladesh, Fire Hydrant & Fire Sprinkler system installation services, Fire Sprinkler & Hydrant System Supplier Company, Best Fire safety company in Bangladesh, Fire Extinguisher Price in Bangladesh Fire Hydrant System installer company in bd, Fire Protection System Provider bd .
SAYMA ENTERPRISE After 9 Years Of Establishment, Can Now Proudly Declare That They Have Pioneered And Accomplished Their Goal.

INTRODUCTION

Under the rather broad heading of fire protection systems, this module will examine the main components of alerting, suppression, and containment features and systems. Consideration of these systems is a natural adjunct to a discussion of hazards and building construction features. The primary components we will examine are fire alarm systems, fire detection and notification systems, suppression agents and systems, water distribution systems, automatic sprinkler systems, standpipe and hose systems, and portable fire extinguishers. This module will cover a lot of basic material meant to provide the novice inspector a solid foundation on which to build. As was said in the earlier modules, it is only a beginning.

Purpose of Fire Alarm Systems

A properly designed, installed, operated, and maintained fire alarm system can reduce the losses associated with an unwanted fire in any building. These losses include property and, more importantly, human life. The primary motivation for fire alarm system requirements in building and fire codes is to provide early notification to building occupants so they can exit the building, and to notify the fire service so it can respond to the fire. In settings such as hospitals the fire alarm system provides notification to staff so they can respond to the fire emergency (as opposed to evacuating the building). This module will explain the basic features of fire alarm systems and the inspection of these systems. It should be noted that fire alarm systems also are called "protective signaling systems," especially in NFPA documents and in other codes and standards.

Basic Components of a Fire Alarm System

Fire alarm systems generally have the following components. Alarm Initiating Device Circuits These are the circuits which connect initiating devices such as smoke detectors, heat detectors, manual pull stations, and water flow alarms. Additionally, many system monitor devices important to the overall fire safety of the building also tie in to initiating circuits. These devices indicate an "abnormal" condition, not a fire or "alarm" condition. They are referred to as "supervisory devices." One example would be the valve supervisory switch or tamper switch of a valve controlling the automatic sprinkler system. These types of devices also may be connected to supervisory type circuits. Alarm Indicating Appliance Circuits Audible and visible alarm indicating appliances tie in to these circuits to provide warning to the building occupants. Devices which send a signal off premises also can be connected to these circuits.

Fire Alarm Control Panel

The fire alarm control panel contains the electronics that supervise and monitor the fire alarm system. The initiating and indicating circuits are connected directly into this panel.

Primary Power Supply

The primary electrical supply powers the entire fire alarm system. Primary power for fire alarm systems typically is provided by connecting into the local commercial power service.

Secondary Power Supply

A separate power supply that will operate automatically when the primary power fails and is capable of operating the entire system is considered a secondary power supply.

Initiating Devices

Initiating devices fall into one of two main categories: either those that indicate an alarm condition, or those that indicate an abnormal condition of a monitored device. A brief description of the common types of devices follows. Fire detection can occur by using any device that responds to conditions caused by fire. The most common byproducts of fire are heat, smoke, flames, and fire gases. In addition, people can detect a fire and initiate an alarm by activating a manual pull station. Also, when a sprinkler system activates and causes an alarm, it is a result of the sprinkler system detecting heat produced by the fire (if the sprinklers have fusible links). We will now look briefly at heat FIRE PROTECTION SYSTEMS detectors, smoke detectors, flame detectors, gas sensors, manual fire alarm boxes, automatic suppression systems, and indicating appliances.

Heat Detectors

Heat detectors commonly are used to detect fires. They are not as prone to false alarms and are less expensive than smoke detectors. However, the response of heat detectors may not be adequate in many instances, which limits their usefulness. Heat detectors are slower to respond to fires than are smoke detectors because heat detectors cannot respond to smoke. Heat detectors typically are best suited for detecting fast-growing fires in small spaces. Heat detectors are also a means of fire detection in locations that smoke detectors cannot protect due to such environmental effects as mist, normally occurring smoke, and high humidity. Heat detectors have several different operating mechanisms. Fusible-element type mechanisms use a eutectic alloy that melts rapidly at a predetermined fixed temperature. When this temperature is reached and the fusible alloy melts, an electrical contact occurs and causes an alarm. Fusible alloys also are commonly used in sprinkler heads. These mechanisms must be replaced after each operation. Bimetallic type mechanisms combine two metals with different thermal expansion coefficients. As the mechanism heats, one metal expands more than the other, causing a deflection in the shape of the element. This deflection causes an electrical contact, thus initiating an alarm. These types of mechanisms are self-resetting as the element cools. Rate-compensated heat detectors respond to a given temperature of the surrounding air regardless of the rate at which the temperature rises. This, in effect, compensates for thermal lag, which standard thermal detectors do not do. This can be compared to the rate-of-rise detectors discussed immediately below. Some heat detectors operate on what is commonly referred to as the "rate of rise" principle. Regardless of the ambient temperature, if the detector senses a rise in temperature exceeding a set amount, an alarm occurs. One method of accomplishing this is using a container that has a small vent hole. As air is heated it expands; this can cause a set of contacts
FIRE PROTECTION SYSTEMS to close and send an alarm. If the expanding air can leak out of a vent hole, the resulting pressure will be reduced. However, if the air expands at a rate faster than the vent hole can compensate for, the contacts will close and an alarm will be sent. Combination heat detectors can combine the two operating principles of reaching a fixed temperature and reaching a set rate of rise. Smoke and heat detectors also can be combined into a single unit. It should be noted that some combination smoke/heat detectors activate when either condition is reached, while others require both the smoke and heat mechanisms to operate. In most cases, little benefit, if any, results from the combination detector which requires both heat and smoke to cause an alarm. Other types of heat detectors include heat-sensitive cables and liquid expansion detectors.
Introduction Because fire is one of the most dangerous threats to an aircraft, the potential fire zones of modern multiengine aircraft are protected by a fixed fire protection system. A fire zone is an area, or region, of an aircraft designed by the manufacturer to require fire detection and/or fire extinguishing equipment and a high degree of inherent fire resistance. The term “fixed” describes a permanently installed system in contrast to any type of portable fire extinguishing equipment, such as a hand-held Halon or water fire extinguisher. A complete fire protection system on modern aircraft, and on many older aircraft, includes a fire detection system and a fire extinguishing system. Typical zones on aircraft that have a fixed fire detection and/or fire extinguisher system are: 1. Engines and auxiliary power unit (APU) 2. Cargo and baggage compartments 3. Lavatories on transport aircraft 4. Electronic bays 5. Wheel wells 6. Bleed air ducts

SAYMA ENTERPRISE IS ALWAYS WITH YOU FOR BETTER SERVICE