Installing And Testing Of Fire Alarm Systems

Installing And Testing Of Fire Alarm Systems
Table of Content Page No Installing ICCP Units...........................................................................3
Installing and Testing of Fire Alarm Systems ....................5
Sensors...................................................................................................6 Smoke Detector
Sensors..................................................................6 Heat
Detectors................................................................................7 Flame
Detectors..............................................................................8 Testing of
Sensors.................................................................................9
Timers...................................................................................................10 Manual Call
Points.............................................................................11
Sirens...................................................................................................12 Installing Echo Sounder
Systems..............................................13
Transducer............................................................................................15 Matching
Box.................................................................................16 Distribution
Box...................................................................................16 Display
Unit...........................................................................................17 Introduction The Electronic
Workshop of the Colombo Dockyard is in charge of the installing and repairing of electronic
equipment in ships. Inspection of the installed equipment is also done by this section of the
company. This department consist of 8 permanent works each specialised in a different electronic
systems, 3 supervisors and 2 Engineers. This department is in charge of setting up and repairing of
communication systems, PA systems, Echo Sounder systems, GPS Systems, Dynamic Position
Systems and ICCP Systems. During my stay in this workshop the installations and repairs that were
done are as follows:– Installing ICCP units Installing and Testing Fire Alarm Systems Installing
Echo
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Alarms : An Electronic System
Introduction
A burglar alarm is an electronic system designed to detect an unauthorized entry into the house,
building or area. These kind of security alarms are used mostly in the commercial, residential,
industrial and military properties for protection against theft (burglary) or property damage. It also
provides protection form introducers. It also keeps the privacy of the house. Burglar alarms contains
a main control box to which various sensors are connected. When a break in is identified by the
sensors they send out signals to the control box, which in return, make the alarm to sound or I may
perform some predefined tasks like turning the lights of curtains, calling the police, calling the
security company etc.
Working
Burglar alarm works with the help of sensors and ICs connected with capacitors, transistors,
resistors and diodes. The alarm works by using sensors and electrical circuits to detect the thief or
introducer. There are different types of burglar alarm including motion detectors, which detects
changes in the specific area or region and the smoke or fire, which detect possible arson. To detect
movement changes in a particular area there are panic detectors.
Sensor of burglar alarm trigger out by either closing or opening a circuit. The circuit can be either
closed or open but closed systems provide more security than open systems that is the reason closed
systems are more popular. What happens in the closed system is it allows the electricity to flow

Fire Prevention Essay
Fire prevention is a term being heard more and more today in America. It is starting to become a
standard in today's fire departments. Fire has the ability to keep us warm and also has the ability to
make us homeless. As we grow as community and the technology changes, Fire Prevention needs to
be made more of a necessity in our homes today. More homes are being built out of lighter material
along with being built closer and closer together. Each can lead to extreme destruction, homes being
lost, people being displaced, and even death. Why should we not protect homes and defend them
against an enemy that can attack at any minute? Fire prevention needs to start in the home and then
be carried onward in our lives. There are very ... Show more content on Helpwriting.net ...
Today we have moved beyond young men in street rattling wooden noise makers, technology has
given us a new kind of fire alarm. There are 2 main kinds of fire alarms: ionization and
photoelectric. Ionization alarms sound more quickly when a flaming, fast moving fire occurs,
photoelectric alarms are quicker at sensing smoldering, smoky fires. There are also combination
smoke alarms that combine ionization and photoelectric into one unit, called dual sensor smoke
alarms. Most of the fire alarms are powered by batteries which in order for the alarm to work, need
to changed regularly. They provide early detection, and thus warning, of the fire. But they take no
action on the fire itself.
Wet stuff on the Red stuff Something that was introduced in commercial buildings and places of
large quantities of people, have made their way into our homes. Fire sprinklers are being installed
into residential buildings as a normal item. In a report by The Home Fire Sprinkler Coalition,
sprinklers typically reduce chances of dying in a fire and the average property loss by one–half to
two–thirds compared to where sprinklers are not present. The same website notes that if both fire
alarms and fire sprinkler are installed in a

Who You Gon Na Call? Ghost Busters
"Who you gonna call? Ghost Busters" (Brillstein & Reitman, 1984). In 1984, a very popular comedy
movie "Ghostbusters" hit the big screen and this quote from the movie seemed to stick in everyone's
head. Today, the question that seems to be raised when there is a crisis or emergency situation is
"Who you gonna call? The fire department". In today's society, the fire service has become the
"catchall" for every kind of emergency. Do you agree? Fighting fire is still a big part of the fire
service, "in 2015, every twenty–three seconds a fire department was responding to a fire" (NFPA
(Ed.), 2015). However, the fire service has evolved from just "putting the wet stuff on the red stuff"
mentality, to a profession of highly trained and skilled firefighters. Ever since the discovery of fire
there has been a need for methods to manage it if, and when, it gets out of control. Throughout
history, to keep up with the changing environment in which we live, civilization and the fire service
have made numerous changes. With fewer fires, and more products being manufactured from
plastics and other dangerous chemicals, the fire service must be vigilant in developing new methods
to keep firefighters safe and justify their job while providing the most efficient service for the
citizens.
The discovery of fire by the primitive man (Homo erectus) was one of the first and greatest human
discoveries of all time (O'Neill, J., Nov. 2013). Following the discovery of fire come the first

Grapevine Fires
Even if commercial properties are prepared for any unforeseen disaster, it is possible that their
preparations are not enough to quell the situation. The strength of fires, for example, is not easy to
measure. And if establishments underestimate the power of the flames, their stores are going to be in
serious trouble. Fires are disasters that can start small but escalate rather quickly. The flames can eat
through materials like wood and cloth, which are typical products that are sold in establishments.
Once the fire has engulfed a good portion of the store, commercial property owners are left with a
mess of devastating proportions. Though commercial properties are equipped with fire
extinguishers, it pays to get upgraded fire emergency systems. ... Show more content on
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We value the hard work you have put in your store, and we don't want to see it crumble due to fire–
related accidents. Our monitoring service does not sleep and it watches over your property you at all
times. And if you decide to hire our services, you'll receive a FREE estimate. As of the census held
in 2013, it was estimated that 50,195 people line in Grapevine. ~~city–page~~ About Grapevine,
Texas The city of Grapevine, Texas is predominantly located in Tarrant County, but its areas extend
to the counties of Dallas and Denton. It is also part of the Dallas Fort Worth Statistical Area, and it
neighbors the cities of Coppell, Euless, and Irving. One of the most important historical events that
occurred in Grapevine occurred in October 1843. During this time, General Sam Houston and his
fellow Republic of Texas Commissioners camped at Tah–Wah–Karro Creek (a.k.a Grape Vine
Springs). Their purpose was to meet with the 10 Indian nations, which culminated in the signing of a
treaty that promoted "peace, friendship, and commerce". The treaty opened the area for homesteads
and what emerged as the settlement was named Grape Vine – paying homage to the wild grapes that
grew in the

Causes Of The Triangle Shirtwaist Factory Fire
The Triangle Shirtwaist Factory Fire
On March 25, 1911 in the New York City's West village 146 people mainly young women
immigrants of Italian and Jewish background perished. The women, some just teenagers would work
long hours in the factory sewing shirtwaist high necked cottons blouses which were the fashion
staple of the time for young women. The owners of the Triangle Shirt waist factory would lock the
doors while the women worked, said to prevent "theft" and the visit of union reps to the location.
What lead to the fire was the unsanitary factory floor. This was the exact reason to why before the
actual fire, 400 of the factories employees went on strike. During this strike the women fought for
better wages and safer working conditions. Unfortunately they only won some of their concessions
on pay, but little was actually done by the factories owner who continued to keep the workplace in
shambles. As well as the doors still locked. Besides the doors being locked there were piles of
flammable fabric scraps, over flowed waste baskets and many of workers crammed in multiple
floors of the building. In 1977 the fire was ignited by what was said to be a match or cigarette tossed
carelessly amid the debris on the eighth floor. The fire quickly spread through the open factory
floors above. The actual shirtwaist building was fire proof and still stands today. Located in the West
village at the corner of Greene Street and Washington Place one could still pay the original building
a visit. Those on the 10th floor escaped to the roof and took the elevator until it stopped functioning.
During those days fire engine ladders only reached to the sixth floor. Unfortunately during the fire
for some reason workers on the ninth floor were not informed of the blaze, and due to a lack of a
building alarm system this floor had the highest number of deaths. The poorly built and
unmaintained fire escapes collapsed in the heat, sending a many of the workers on a free fall to their
deaths. Which after the initial tragedy, the New York City Fire Chief Edward F. Croke was asked if
the fire escapes provided by building in the area were actually adequate in the event of a fire. The
chief's response was "A great many will use

Mgm Grand Hotel Fire Case Study
November 21, 1980, should have been just another sunny day in Las Vegas, Nevada for the
occupants and employees of the twenty–six story MGM Grand Hotel and casino. In a matter of
minutes, this day would change drastically and would become a reference to the second largest loss
of life from a hotel fire in the history of the United States. On this tragic day, more than 85 lives
would perish from smoke, carbon monoxide inhalation, and bring harm to more than 700 people due
to the carelessness building design, poor insulation of building material, and the lack of safety
policies. [The main factors that caused the fire] The believed point of fire origin was the result of a
faulty grounding electrical wiring that was located behind the west wall ... Show more content on
Helpwriting.net ...
The exemption assumed there would be someone on the property that would notice any fires and
make the proper notifications. The MGM was an occupied 24–hour business, which the builders
took advantage of this exemption and reduced the building cost of the casino by $192,000 for not
installing an automatic overhead sprinkler system. The Deli also fell into to this coverage, due it
being a 24–hour business, but at the time of the fire, the restaurant was no longer a 24–hour diner
and never installed the required sprinkler system. Therefore, allowing the fire to become unnoticed
at the time of the ignition or at the beginning of the incipient phase of the fire. Other flaws with the
building is the designed and poor insulation of the casino's air–conditioning, heating, and ventilation
system, once the flames entered the air duct system, the spreading rate of fire equaled 19 feet per
second throughout the rest of the casino (Naum, 2019). As the flames spread across the ceiling, it
would travel down any open conduit pathways and igniting any flammable building fixtures along
its path of

Cell Phones And Its Effects
Topic Most people in the US and other first world countries use a cellphone in order to keep in
touch and communicate with one another. Personally, I use my phone probably way more than I
should due to all of the cool extra functions it has. It is extremely hard to avoid cell phones in
today's society. However, these cellular devices have a few negatives. The radiation from cell
phones and their towers has been linked to causing cancer, they are a huge source of distraction, and
these phones can sometimes overheat and catch on fire. To begin, the radiation caused mainly by
cell phone towers is becoming huge concern..exposure to electromagnetic radiation is growing and
becoming a serious health threat ("The Hidden Dangers of Cellphone Radiation"). Many girls I see
carry their phones in their bras. It is very surprising to me that they still do this despite the risk of
their tissues absorbing the radiation. However, The real danger comes from cellphone towers. The
tower–based antennas carrying the signals have been linked to development of brain tumors, genetic
damage, and other exposure–related conditions ("Advantages and Disadvantages of Cell Phone").
These cell phone towers emit much more radiation than one single phone ever could. The people
living next to them are exposed to this fatal radiation for a big portion of their lives. Although
cellphone towers are necessary in order to allow cellphones to fulfill their purpose, they should not
be built within unsafe

One Meridian Plaza High-Rise Fire of 1991: A Case Study
One Meridian Plaza High–rise Fire 1991 Name Institution Professor Course Date One Meridian
Plaza High–rise Fire 1991 Introduction One Meridian Plaza High–rise Fire of 1991 records the
biggest non–terrorist linked high–rise fire in the American history. The fire occurred in the evening
of Saturday February 1991 and it burned for approximately 19 hours. The fire started on the twenty–
second floor of the thirty eight–story One Meridian Plaza in Philadelphia (US Fire Administration,
1991). The developing blaze covered eight floors resulting in the demise of three fire fighters,
injuries to twenty–four firefighters and a civilian and severe destruction to the building. The fire also
led to economic chaos to several business enterprises located within the building as well as to
properties adjacent to the building. The fire department received preliminary call just before 8.30
p.m. On arrival at the scene, fire fighters saw heavy smoke at the mid–height of the plaza and flame
expanding from one window thereby exposing the adjacent floors (US Fire Administration, 1991). A
dark, thick column of smoke was evident and extended up the building faรงade towards the roof.
The smoke started to vent from several additional points along the northern side of the fire starting
point. The fire resulted in engagement of twelve alarms that brought fifteen ladder organizations,
fifty–one engine companies and hundreds of fire suppression personnel (US Fire Administration,
1991). In the

Meridian Plaza Fire
The One Meridian Plaza fire that took place on February 23, 1991 was an utter disaster in which
everything went wrong. Starting with the initial fire detection and continuing to the eventual
suppression of the fire, events unfolded in manner that heavily stacked the chips against fire fighters
of Philadelphia. Even though this was a tragedy of immense proportions, there are lessons to be
learned and behaviors to be rectified through a thorough study. With an examination of multiple
factors, including the building's construction, occupancy, fire protection systems, the nature of the
fire fighters' response, and the fire growth and control to name a few, a clearer picture of what
happened February 23, 1991 can be realized. Furthermore, lessons ... Show more content on
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On arrival they witnessed smoke and flames on the mid level of the building. Two battalion chiefs
arrived on scene and one proceeded to set up incident command at the lobby, while the other led fire
fighters up the building for fire attack (Routley 8). One of the security guards then informed the
chiefs that the fire was on the 22nd floor, and at 2033 battalion chief 5 ordered a second alarm
(Routley 8). Due to insufficient fire protection around the utility lines all power was lost to the
building (Routley 8). At the loss of primary power the emergency generator didn't kick in due to
improper maintenance it was unable to start (Routley 8). This profoundly impacted the fire
operations for the remainder of the incident because the entire building was left without electricity
(Routley 8). As stated in the tactical report, "This total power failure had a major impact on the
firefighting operations. The lack of lighting made it necessary for firefighters to carry out
suppression operations in complete darkness using only battery powered lights. Since there was no
power to operate elevators, firefighters were forced to hand carry all suppression equipment
including SCBA replacement cylinders up the stairs to the staging area that was established on the
20th floor. In addition, personnel had to climb at least 20 floors

NFPA 14.5
You asked the following question: "The wording of 14.4.3 says that tanks shall be kept filled and the
water level shall never be more than 4 in. below the designated fire service level. This would seem
to mean that it was the owner's responsibility to monitor the tank level and keep it filled. Automatic
filling is permitted per 14.4.7 where this does not sound like automatic filling is required. Would a
float switch that is supervised by the fire alarm system and a manual fill valve be acceptable?" In
response to your question we have reviewed NFPA 22, 2008 edition that you indicated as the
applicable standard as well as NFPA 25, 2008 edition. Our informal interpretation is that manual
means to fill the tank is permitted and is also the ... Show more content on Helpwriting.net ...
The exception is when the application is a break tank per Section 14.5 where the refill is required to
be automatic operation and listed. Supervised water level alarms are also acceptable. If water level
alarms are provided, then provisions are made for the installation of sensors in accordance with
NFPA 72 for two critical water temperatures and two critical water levels. The annex A.14.9 says
that it is not the intent of this standard to require the electronic supervision of tanks. Where such
supervision is required per NFPA 72, then a list of alarms is provided for temperatures and water
levels. Related to this question are the requirements of NFPA 25 for water tanks. NFPA 25, 2008
edition in Section 9.2.1 says tanks equipped with supervised water level alarms that are inspected
quarterly and inspected monthly when supervised alarms are not provided. This reinforces that
electronic supervision is not required. However, if electronic monitoring is provided, then it has to
be supervised at a constantly attended location. Lastly, it was understood that the owner or their
representative is responsible for their systems. The 2011 edition of NFPA 25 put this in writing as
4.1.1 that the property owner or designated representative shall be responsible for properly
maintaining a water based fire protection

Social Security: What Is Monitored Home Security System
Home Security that Works There are many different types of home security systems, and some are
more effective than others. A loud burglar alarm, security company stickers in the windows and
relying on a neighbor to have a look when you're not at home are a few common ways people use to
protect their property and families. However, the only system that provides true peace of mind is an
alarm monitoring system. What Is Monitored Home Security? A home monitored security system is
connected to a monitoring center 24 hours a day. At the center, trained professionals respond if your
alarms are activated. There are several ways a system can be connected to the monitoring center.
Through your landline: Your landline phone is connected to the

Building Management Systems
Contents:
Pages
1. Project details. 03
2. Sensors and actuators used. 05
3. Details on controllers/DDC used in the project. 17
4. Software, GUI, and communication protocols. 25
5. Drawbacks of the overall system. 25
6. Discussion. 25
BUILDING AUTOMATION SYSTEM PROJECT– ADMINISTRATION BUILDING OF
TRELLEBORG LANKA (PVT) LTD
1.0 PROJECT DETAILS
A Building Management System (BMS) is a computer–based control system installed in buildings
that controls and monitors the building's mechanical and electrical equipment such as ventilation,
lighting, power systems, fire systems, and security systems. A BMS consists of ... Show more
content on Helpwriting.net ...
2.0 SENSOR AND ACTUATORS USED
✓ Temperature Transducers
[pic]
[pic] ✓ Pressure sensors
[pic]
[pic]

✓ Humidity Sensor ✓ Differential Pressure sensors
[pic]
[pic] [pic]
[pic]
✓ Humidity Transducers
[pic]
[pic]
[pic]
[pic]
✓ Level sensors ✓ CO2 sensor ✓ Flow Meter ✓ CCTV Cameras ✓ Light sensors ✓ Occupancy
sensors ✓ Water Pumps ✓ Valve actuators ✓ Fans
3.0 DETAILS OF CONTROLLERS/DDC USED
Inputs allow the controller to read temperatures, humidity, pressure, air flow, and other essential
factors. The outputs allow the controller to send command and control signals to slave devices, and
to other parts of the system. Inputs and outputs are digital or analog.
The BMS is facilitated with a System/Network controller as this is a Supermarket/Office building.
System controllers provide general purpose feedback loops, as well as digital circuits.
System/Network controllers are applied to control more mechanical systems such as an Air Handler
Unit (AHU), boiler, chiller, etc.
Terminal Unit controller is used for control of lighting.
|POINT SCHEDULE –BUILDING AUTOMATION SYSTEM (TRELLEBORG LANKA (PVT)
LTD |
| | | | |

Fire Prevention Essay in Hindi & English
What is Fire Prevention?
The goal of the Fire Prevention Division is to prevent the loss of life and damage to environment,
property and other values in Santa Fe County through the establishment of community partnerships,
information dissemination, code development and enforcement, planning, review and active
involvement in our communities.
Fire Safety Tips
X
Lauren Romano
Lauren Romano became a freelance writer in 2007. Her work appears on various websites and in
print. Lauren specializes in a variety of topics including dating, travel, New York City, decorating
and budget living.
By Lauren Romano, eHow Contributor
It is important to thoroughly pay attention to fire safety tips that you learn throughout your life.
These tips ... Show more content on Helpwriting.net ...
If possible, wet the end first to cool it off. When you put the cigarette into the ashtray, make sure
that it is completely in and stable so it won't fall out and onto something that could catch on fire.
Don't overload outlets. If you can, unplug anything that you're not using to help clear some outlet
space. If you do have to have electronics plugged in, distribute them instead of putting them all into
one outlet.
Expert Insight * Run out of the house immediately if there is a fire. Don't run around trying to grab
valuables or other items, and absolutely don't run back in to get anything. Get to your neighbors
house to call 911.
Have multiple escape routes out of your home. If you don't plan one and there is an emergency, you
may get disoriented on where you should go. Having multiple plans set up could help you to get out
alive.
Stop, drop and roll if your clothes catch on fire. Running will only make the situation worse.
Misconceptions
* Many people think that a fire won't ever happen to them, especially in their own homes, but there
is always that chance even if you don't want to acknowledge it. Instead of being in doubt that it will
ever happen, you're better off taking precautions just in case. If a fire were to happen, it's better to be
prepared instead of being caught off guard
How to Prevent a Fire in a Home
X

Cherie Brunetti
Cherie Brunetti has been

Fire Protection needs Protection of the Law Essay
Fire Protection needs Protection of the Law
In 1864 Major Stewart Harrison, an English Engineer, gave to the world the first Automatic
Sprinkler Head, his design was also in fact superior to many that followed it. But, as so often
happens, it was not Mr. Harrison who gave the automatic sprinkler a practical development, and it is
Henry Parmelee, of Newhaven, Conn., and Frederick Grinnell, of Providence, R.I., that the credit
must be awarded for giving to the Automatic Sprinkler its practical application and laying the
foundation of what is now a worldwide industry (Wormald Web). Until now, sprinklers are been ...
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During the demonstration, Mr. Parmelee installed the system in a Wholesale Market made of
wooden shed (20ft x 30ft), which he fitted with six of his Sprinklers. The floor was strewed with a
mass of chips, shavings, tallow, cask shavings, barrels, etc, all well saturated with paraffin oil. Then,
light was set in three different places. Immediately huge volumes of flames burst forth and drove the
spectators back some distance from the shed. In one minute and twenty seconds the first Sprinkler
opened, followed by two others, and in a short time not a vestige of the fire remained (Wormald).
Spectators were amazed and given deep impression by the demonstration. Later, insurance company
learned the importance of having automatic sprinkler installed, would reduce the financial loss ratio
to fire. So more insurance companies began raising the insurance for large business and commercial
buildings, forcing business owners to install automatic fire sprinkler systems to lower the payments.
Mr. Parmelee was able to convince the insurance company and getting contract from mill owners;
creating the world's first fire sprinkler company. His vision of making the system practical finally
became real.
Into the late 20th century and early 21st century, automatic fire sprinkler has became mandatory by
law

ASP Security Systems Analysis
Since 1972, ASP Security Systems have been helping people all around Eastern Connecticut and
Western Rhode Island stay safe and secure. Based in Waterford, CT, they are a comprehensive
security company that specializes in surveillance systems and alarm monitoring as well as fire
safety. They are dedicated to providing the best protection possible and they know that when it
comes to fire safety, regularly scheduled fire alarm inspections go a long way.
The most obvious reason for a fire alarm inspection is to ensure that it functions exactly as it should.
Your alarm needs to be able to detect the first sign of smoke, notify the fire department as soon as
possible, and turn on the sprinkler system. A trained and certified technician from ASP

National Fire Incident Reporting System
Data was collected and analyzed, to determine if there was a significant correlation between
Firefighter incidents based on the status of being a Professional or Volunteer Firefighter, within the
state of Tennessee in 2005. Data was collected based on incidents per month for the 2005 year and it
was concluded that there was a significant increase in the number of Firefighter incidents as a
Professional Firefighter compared to that of a Volunteer Firefighter. The data used and analyzed was
collected from the National Fire Incident Reporting System, and was within correlation with the
data shown, however the conclusion of this research was different than the comparison noted with
the National Fire Protection Association that analyzed that Volunteer ... Show more content on
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The data used to be analyzed was based on the data reported from the 593 fire districts that reported
out of the 728 Fire Departments in the state in 2005. The sections used of the data set was the
Career; Injury Date and State. The subsection data used was the numbers for professional firefighter
and volunteer firefighter. The number of incidents from each month for that reporting year were
taken from the data section: Professional Firefighter; Jan–3; Feb–1; March–2; April–4; May–2;
June–4; July–2; August–10; September–4; October–1; November–8; December–4. Volunteer
Firefighter; Jan–4; Feb–4; March–2; Arpil–0; May–2; June–2; July–6; August–9; September–1;
October–0; November–1; December–4. Each month was analyzed to determine the differences in
the incidents that occurred with Professional and Volunteer Firefighters. There were no additional
data added collected or changed for this

Apollo Fire Research Paper
Apollo fire detectors in Chester are supplied by The Fire Alarm Store. We are a new service
provided by Dynamic Fire Protection Ltd to allow our customers to purchase our top brand fire
alarm and associated equipment, all at the very best prices. Many buildings can be saved and risk to
lives kept to a minimum if an early fire warning system is put in place. Fires can start without
warning, at any time and in any place. A fire detector can assist in alerting those in the building if a
fire starts in a section of the building that is unoccupied. For workplaces and commercial buildings
in Chester, Apollo Fire Detectors can alert the staff and occupants should a fire break out. We have
been responsible for the supply, installation and maintenance of fire alarms and detectors in a variety
of buildings including offices, nursing homes, hotels, hospitals and retail outlets. We can also assist
you with the design, programming and the testing and commissioning of fire alarm systems. We can
also provide installation and ongoing maintenance and service facilities. The Apollo Fire Detector is
available for use in all buildings, including workplaces. ... Show more content on Helpwriting.net ...
Register online and once your trade status is verified, you can request a quote. Our prices are
competitive and we offer great deals for our Trades customers. Contact The Fire Alarm Store if you
would like more information about the benefits of Apollo Fire Detectors. We will send you an email
with your quotation. We are happy to deliver your new fire detector to your premises, and endeavour
to have your purchase delivered in one to two days. Keep your staff and building safe by using a
quality fire detector system from the UK's number 1 fire alarm

Cover Thickness Matter Research Paper
The cover is an important part of your hot tub as it protects against damages from debris, and
replacing your cover with one that is the correct thickness is vital. At The Cover Guys, we have
three different cover thickness to accommodate hot tubs through out the country's multiple climates.
Why Does Cover Thickness Matter?
It all boils down to how well the cover will keep the hot tub insulated: the thicker the cover, the
better the insulation. This is particularly important for colder areas or when you want to keep your
hot tub heated throughout the year. The covers thickness can help reduce heat loss and energy
consumption, allowing you to operate your hot tub cheaper than otherwise. Cover thickness isn't the
only consideration you need to keep in mind when buying a replacement cover, you also need to
consider the ... Show more content on Helpwriting.net ...
To reduce our negative impact on the environment, our CFC–free foams are manufactured using
stream instead of the more traditional but harmful freon agents.
The Standard 4 x 2 Hot Tub Cover
The Standard 4 x 2 provides a tapered cover that is 4 inches thick at its peak. When used indoors, it
protects the hot tub from damages caused by children or pets climbing onto the cover, as well as
debris that could get knocked onto the hot tub. The standard thickness is ideal for indoor use to
reduce energy loss and for outdoor use in areas with milder climates.
The Deluxe 5 x 3 Hot Tub Cover
Think of the Deluxe 5 x 3 cover as similar to the all season tire. They work well in all areas and
locations, inside or out. The tapered 5 inch thick foam core provides ample insulation to maintain
the proper temperature and keep the hot tub protected. The Cover Guy's Deluxe Cover provides the
best overall value.
As with our other models, the Deluxe includes:
Childproof Locking Tie–downs
Commercial Quality Double Stitched with Polymatic UVR

Personal Narrative: Denigrating Our Services
Jeff, Denigrating our services is certainly not a very professional or productive way to proceed,
especially considering the constant destruction of the existing fire alarm system, resulting in Stanley
making special arrangements outside of the original scope of work. Our team is working extremely
hard to ensure this is completed correctly, and on time. I don't know if you've seen the history of
what's already transpired but here's the break down. Without alerting Stanley ahead of time, Huff
added it the Monday prior to Thanksgiving, in doing so completely disconnected all the fire devices
we had connected to the previously moved system when the Riser was moved the first time to
accommodate the New Rear Door being cut out of the where the

Conditioning Project Essay
You asked the following questions: "We are involved in a project that is to be used as a
reconditioning facility for a car dealership. There are two areas within this building where motor oil
(Class IIIB combustible liquid) is to be stored. The first area is on the ground floor and consists of
two 500–gallon double wall tanks that are to be located in a room that is approximately 514 sq. ft. in
area. The oil located in the room is fresh oil to be used for the car repair garage. The room height is
15 ft–3 in. with tank heights of 60.5 in. The second area is located on a second floor mezzanine and
consists of a single 3,900–gallon storage tank. It is to be used as a waste oil tank and will be located
in a room that is approximately 2,800 sq. ft. in area. The room height is 12 ft–1 in. with tank heights
of 47 in. In both cases, the rooms will be constructed of steel and concrete. Both areas are to be used
for other general storage with no separation from the oil tanks. The tanks are to be constructed of
metal, stationary, and mounted on skid plates relatively low to the floor level. Each is to have an
emergency vent that will discharge inside the building. The project documents call for ordinary
hazard (Group 2) density for these areas with NFPA 13 being the applicable standard. Our questions
are as follows: 1) Should NFPA 30 be the applicable standard in determining a sprinkler design
density for this scenario? 2) Assuming NFPA 30 is the correct standard, is

Automatic Fire Sprinkler System Essay
The automatic fire sprinkler system was one of the earliest sprinkler systems placed into effect. The
origin of the modern day automatic sprinkler system dates back to the early 1800's. The first
automatic sprinkler system was created in England in the 1806 by John Carey. It consisted of a pipe
with valves held closed by counterweights attached by string. When flames burned through the
string the counterweight dropped to the floor, which opened the valve that released the water and
extinguished the fire. As the 1800's progressed, the basic pipe system for sprinklers was becoming
more prevalent across England. It began to pop up in textile mills all through out the country. In
1864, as sprinkler system use grew, Major Stewart Harrison of ... Show more content on
Helpwriting.net ...
Not only does this cool what ever material is heated, but it can pre–cool any materials that are not
yet heated or involved in the fire. This helps prevent the spread of that fire through the structure
saving the structure and protecting its contents from further fire and water damage. Although the
automatic sprinkler system is the most widely used type of fire protection system, it does have its
limitations and uses inside certain building types. As previously stated, it is generally used in
commercial buildings. This is because there are usually no special hazardous materials in these
buildings, or any large quantity of materials that would react negatively with the application of
water. It is installed in buildings such as hospitals, schools, and office buildings for life safety first,
then building preservation. Since a proper functioning sprinkler system will reduce the fire size and
prevent its spread, it will allow for more time of evacuation for these buildings. This is especially
useful in hospitals and nursing home settings where there may be a large number of immobile
people that require time to move to a more safe location. The automatic sprinkler system is also used
in buildings such as warehouses. It is used here due to the large amount of combustible material that
goes along with mass storage.

Occupational Health And Safety Policies
Occupational Health and Safety policy and guidelines provide key information and support of the
rights and responsibilities of employers and staff. They are a key component of achieving a safe and
healthy work environment at factory and setting direction to support a culture of health and safety.
The ultimate goal is to foster a culture where there is ownership of health and safety at all levels
within factory premise. With an established set of rules and regulations that are important in health
and safety the ultimate goal is to establish a culture where there is true ownership of health and
safety at all levels at factory. Accord has developed this Occupational Health and Safety toolkit to
support you to:
Understand what a robust ... Show more content on Helpwriting.net ...
It involves mitigation, preparedness, response and recovery in order to lessen the impact of
disasters. Emergency management requires a partnership among all levels of employees inside
factory. Successful preparedness requires detailed planning and cooperation among each section.
Objective
The objective of emergency preparedness is to develop a plan and corresponding response
procedures which will ensure emergency preparedness and provide means for mitigating the
consequences of emergencies, including very low probability events, in order to protect the health
and safety of the general public and personnel. The plan, as presented herein and the emergency
response procedures provide directions for

Fire Sprinkler Research Paper
American Fire Sprinkler Association Scholarship We Believe in Education and Training It cannot be
said enough – property and lives are saved by using automatic fire sprinklers. It is fairly obvious
when sprinklers aren't installed – buildings go up in flames and the only option is to wait for the fire
department to extinguish it. What happens when fire sprinklers are installed? We will soon discover
this answer and that's the purpose of these contests. The contest is open to all high school seniors
who are U.S citizens or legal aliens living in the USA. The winning certified trade school or
college/university in the US will receive a scholarship. Students will need to be enrolled in the
semester starting in fall 2015 the latest. Requirements: ... Show more content on Helpwriting.net ...
Fill in the registration page with all the required information. All details submitted by the student's
application will be confirmed prior to the scholarship funds being released. Students will be
disqualified without notice if there is ANY misleading or false information on the submitted
application. Students will have to do a multiple–choice test consisting of 10 questions. The test is
open–book and you can print out a copy of the essay and bring it to the test for reference. Every
correct answer will get the student one (1) entry into the draw for one of the ten scholarships worth
$2,000 each. Students will have one more chance at the end of the test to answer again any questions
they got incorrectly during the exam. If a student answers all 10 questions correctly, he or she will
get 10 entries into the draw. Every student will get only one chance to do the test online. Students
will be instantly disqualified without notice if they attempt to do the test again under a different
name, address

What Are The Physical Security Measures That Are In Place...
This section of the document identifies the physical security measures that are in place at all
Solomon Enterprise LLC medical and IT facilities such as central database/data center located in
West Virginia, regional hospitals in Florida, Texas, Arizona, Montana, and Missouri, and the disaster
recovery site located in Billings, Montana. Additionally, the document provides an analysis of the
current security measures and provides recommendations that are critical to the security
infrastructure of the company.
There are a number of physical access controls that allow an organization to safeguard its physical
assets. Solomon Enterprises LLC uses a combination of walls, fencing, gates, security guards, ID
cards/badges, electronic monitoring ... Show more content on Helpwriting.net ...
The alarm systems are installed and active on all emergency exits as well as IT room closets. The
emergency doors are locked and must only be used during an emergency. Any tampering or use of
the exit doors will trigger the alarm system and automatic alert the local authorities. In addition, all
doors that have an alarm system must not be open for longer than 2 minutes without authorization.
The alarms are set to go off if the secured doors are left open for longer periods (Barker, 2012).
Security Staff – The data center has hired a total of 4 security guards total who are contractors. The
building is protected by 1 guard on duty at all times which gives 24/7 manned surveillance to the
property.
Security badges – Each personnel entering or present in the building must have an identification
badge displayed at all times. There are IT closets with servers and other networking devices that are
only accessible to authorized individuals. These rooms have electronic locks in combination with
body sensors that are integrated with the alarm system and any tailgating will trigger the alarm
system to notify security and police. Tailgating occurs when an authorized user may allow an
unauthorized user who has not authenticated its identification using the electronic lock system
(Whitman & Mattord, 2012).
The five hospital facilities in Florida, Texas, Arizona, Montana, and Missouri have similar physical
security measures in place except for limited entry/exit points:

Automatic Fire Sprinkler System Essay
The automatic fire sprinkler system was one of the earliest sprinkler systems placed into effect. The
origin of the modern day automatic sprinkler system dates back to the early 1800's. The first
automatic sprinkler system was created in England in the 1806 by John Carey. It consisted of a pipe
with valves held closed by counterweights attached by string. When flames burned through the
string the counterweight dropped to the floor, which opened the valve that released the water and
extinguished the fire. As the 1800's progressed, the basic pipe system for sprinklers was becoming
more prevalent across England. It began to pop up in textile mills all through out the country. In
1864, as sprinkler system use grew, Major Stewart Harrison of ... Show more content on
Helpwriting.net ...
It operates basically the same as in the late 1800's, just a bit more efficiently. A fusible link in a
sprinkler head that is set to break at a predetermined temperature breaks when that temperature is
reached. Water then pours out of that hole that is created hitting the sprinkler head and raining down
in an umbrella pattern over the source of the hear, usually fire. Not only does this cool what ever
material is heated, but it can pre–cool any materials that are not yet heated or involved in the fire.
This helps prevent the spread of that fire through the structure saving the structure and protecting its
contents from further fire and water damage. Although the automatic sprinkler system is the most
widely used type of fire protection system, it does have its limitations and uses inside certain
building types. As previously stated, it is generally used in commercial buildings. This is because
there are usually no special hazardous materials in these buildings, or any large quantity of materials
that would react negatively with the application of water. It is installed in buildings such as
hospitals, schools, and office buildings for life safety first, then building preservation. Since a proper
functioning sprinkler system will reduce the fire size and prevent its spread, it will allow for more
time of evacuation for these buildings. This is especially useful in hospitals and nursing home
settings where there may be a large number of

The Killer T Cells
When an antigen is detected, several types of cells work together to recognize and respond to it.
These cells trigger the B cells to produce antibodies. Antibodies and their responding antigens fit
together like a key and a lock. Although antibodies can recognize an antigen and lock onto it, they
are not capable of destroying it without help. That is the job of the specific T cells, also called "killer
cells". The T cells are part of the system that destroys antigens that have been tagged by antibodies
or cells that have been infected or somehow changed. T cells are also involved in helping signal
other cells of the immune system to do their jobs.
B cells recognize current or past antigens, 'mark' what cells are invaders, and produce antibodies for
those antigens. The killer T cells are the cells that expel those antigens from the body. Killer T cells
have one objective and that is to be the terminator(imagine Arnold Schwarzenegger saying that) of
those viruses and antigens in your body. Helper T cells also regulate immunity. are they examples of
negative feedback?:
I believe that the actions of the T cells and B cells are good examples of negative feedback. Our
feedback mechanism detect, check, and respond to any changes in our body. When our bodies are
pushed out of homeostasis, negative feedback is an example of our body recovering from it. When
we are infected with an illness or when an antigen enters our body, that stimulus generates a
negative feedback or immune

Occupant Response
The first factor that can contribute or hinder the initial response of a building occupant in the fire
emergency is the occupant's perception of their role in the building (Proulx, 2007). When a person is
in their home and the smoke detector sounds, the occupant takes on a leadership role to take action.
Typically, when the alarm sounds, the homeowner or occupant will attempt to identify the problem
and immediately evacuate the structure. In a commercial building where the occupant is a guest or
patron, a fire alarm activation typically does not initiate a response, unless there are visible signs of
a fire. The guests or patrons generally look to employees of the facility for directions and leadership
before taking action to evacuate. We see

The Market Leader On Commercial And Industrial Work For A...
HOME
(CO. NAME) has been the market leader on commercial and industrial work for a long time now.
Our services range from Fire Alarm Installation, Repair and Maintenance of Commercial Systems,
Retrofitting, Violation Removal, Engineering and service upgrades among others.
We are a no excuse company that ensures total quality by getting it right the first time. Our rates are
customised to accommodate individual budgets and our engineers are trained, certified, have the
experience, skill and expertise to deliver even on difficult timelines.
With us your comfort is ensured, security guaranteed and business efficiency optimised. Contact us
today and be guarded against losing revenues as a result of power outages.
ABOUT US
As market leaders in fire Alarm Installation and Commercial–Electrical Services, (CO.NAME),
boosts of years of experience and expertise in Retrofitting, Violation Removal and Engineering not
forgetting Systems Repair and Maintenance. With readily available equipment and qualified
personnel, (CO. NAME) does not compromise on quality. As specialists, our services;
Incorporate customised designs to satisfy individual–commercial needs
Are cheap and cost effective
embrace the use of latest innovation and technology
Are provided by experienced and trained personnel for maximum cover against flames
ensure shortest service delivery and service time
are warrantied for your confidence and safety
are provided anytime, anywhere for 24/7 throughout the year

Atlanta Alarm Research Paper
Atlanta Alarms refers customers and clients to Alarm systems security providers in the Atlanta area
that will not let you down because security is something to be taken with deadly seriousness. Atlanta
Alarms strives to bring you services that detect, protect, and prevent the criminal activity you would
like to deter from entering your safe space. We detect with a wide range of IP Cameras, either
immobile or panning cameras that can be customized to our customers liking. Preventing crimes for
some homes and businesses is as easy as employing an automated gate, opening and closing the
flick of your wrist you'll be taken with all of our preventative services done through the best security
companies in Atlanta. The automated security services ... Show more content on Helpwriting.net ...
Digital images and other data are far easier to store using one of these systems. Surveillance systems
that our providers' offer means that they are monitoring their own homes without being seen use one
of the spy cameras offeredin tandem with our DVR recorders for video monitoring.Themonitor
allows you to view the output from several cameras at the same time.The connectivity of these
services provides the customer the added security benefit.
Remote Home security services offered through Atlanta Alarms security providers' offers a solution
for residents to quickly and easily arm their home security alarm system by simply pushing a button
no matter what the distance.. Remote home monitoring can be triggered by a phone call made
directly to your cell phone that alerts that alerts when something has gone wrong in the home.
Professional remote automation services ensure you will receive messages and alerts while the
authorities are

The Pros And Cons Of Selecting A Home Security System
Five Tips For Selecting A Home Security System According to the FBI, there were over one million
violent crimes committed in 2014 with approximately eight million property crimes that amounted
to 14.3 billion dollars. While most homeowners would prefer a professional service to install and
monitor their security system, the costs for these services are very high. Instead, here are five tips
for selecting the right security system for your home.
https://www.fbi.gov/news/stories/2015/september/latest–crime–stats–released/latest–crime–stats–
released Know the Basics
All home security systems should come with signage, which includes yard signs and window
stickers. The security control panel is the hub of the system and communicates with all applicable
devices including sirens, ... Show more content on Helpwriting.net ...
These communication alarms occur through cellular, Internet or land line technologies. Cellular and
Internet options are often advertised as being safer and better, but a traditional land line alarm
system will meet most home owners' needs. Some home security systems offer optional verification,
which means that security personnel will respond and communicate with residents before
dispatching authorities.
Motion Sensors
When reviewing the security system, the second thing to look at is the available motion sensors,
which provide a second line of defense if intruders gain entrance into the home. These sensors use
passive infrared technology to detect heat signatures emitted by intruders. Advanced monitors will
detect both heat and motion and some can even distinguish between pets and people. These motion
sensors also can be wired into the electrical system, so they serve as occupancy sensors and
automatically shut off lights in rooms with no

Fire Emergency Drill
CHAPTER 1. INTRODUCTION
1.1 Background
Fire safety is everybody's concern. Poor fire safety practices and improper planning for fire
emergency can consequently lead to critical situations. This is more threatening particularly for
buildings which accommodate laboratories, chemical stores or server rooms. Observance and
application of fire prevention principles can help to reduce or eliminate potential fire hazards.
Moreover, much emphasis must be put on elaboration of a well designed emergency plan that
defines the appropriate procedures to be followed in case of a fire. Implementation and practice of
this plan through fire emergency drills is vital. The main focus of this study being importance of fire
drills and setting up of an ... Show more content on Helpwriting.net ...
(HM Government, 2006) * Electrical hazards * Broken sockets and switches * Faulty plugs *
Overloaded sockets and circuits * Problems with lighting fixtures * Inadequate insulation of cables
* Housekeeping hazards * Trash and scraps * Sawdust * Obstructed emergency exits * Friction
hazards * Damaged machine parts * Insufficient lubricant
Wrong adjustment for moving parts of machine * Process or operation–related hazards * Work
operations involving the use of open flame and which create spark, for example: welding.
* Ignition of combustibles due to molten metal. * Operations involving the evolution of flammable
vapors. * Storage hazards * Insufficient ventilation in chemical store rooms for example. * Failure
to store incompatibles separately in different storage cabinets. * storage of flammables near to heat.
* Smoking hazards * Not taking into account "No Smoking" signs. * Smoking in chemical store
rooms or near to flammables * Throwing cigarettes or matches everywhere
(Henkel, 2001)
2.3 Classes of fire
When fighting fires, it is necessary to choose the right type of fire extinguisher. The choice of the
fire extinguisher is based on the class of fire which depends upon the material being burnt in the
fire. Table 1 gives a summary of the classes of fire and the type of burning material or fuel source.
Table 1: Classes of fire Fuel source | CLASSES OF FIRE | |

How Much Pollution Is The Air
Zmoke–Stack Abstract It is quite unfortunate how much pollution is in the air. There's a ton of
global warming in the atmosphere, and it is killing many arctic animals such as polar bears. We hate
to see how our world is getting more polluted each and every day! So in order to protect and save
the world from these "to be born tragedy 's", we decided to come up with the Zmoke Pods. Zmoke
pods will have the following chemicals inside; Krypton, Hydrogen, Xenon, Helium, Neon, Argon
and Radon. These chemicals are known as "Noble Chemicals," because they dissolve into smoke,
take out the toxic specifics in it, and turn it into fresh, clean air. (By going into the smoke molecules
making them go "bye bye")We all think that this idea will reduce global warming, and save arctic
animals. (Like the polar bears which are really cute!) Thank you, EcoBears Zmoke Pods We are
basing this project on tide pods/misters/sprinklers. This is how our idea is going to work: Next to the
smokestack, their will be something known as the Zmoke–box. Now this box, has the magnificent
Zmoke–pods. These pods have the Nobel chemicals inside which are. On top of the Zmoke–box,
there 's a big red button. Once you press that button, thanks to compressed air, all of the Zmoke–
pods currently inside the box will burst, and shoot to the nearest opening. Which will be a tube. The
Zmoke–tube will follow up the smokestack, and into

Cultural Change : The Fire Service
1) Cultural Change
One could say the Fire Service possess one unique quality about how it operates daily and that is the
culture and the community that lies within every department. Culture is defined as defined by
Miriam–Webster "the integrated pattern of human knowledge, belief, and behavior that depends
upon the capacity for learning and transmitting knowledge to succeeding generations (Definition of
Culture, 2017, para. 5)." The many diverse aspects of each department in still's a variety of cultural
differences separating one department from the next. At the heart of all departments, fire service
culture is the men and women who work and train hard to serve their communities as prescribed by
the Fire Chief. The Fire Chief, however, ... Show more content on Helpwriting.net ...
This initiative emphasizes the importance of individuals holding themselves accountable for their
own health, wellness, and safety. Additionally, this message needs to be derived and set forth by the
administration of the department who should equally demonstrate the same behavior. A Fire Chief
who establishes such expectations are the first in line to demonstrate their own accountability
standards through their physical appearance and visible measures. For example, maintaining a
healthy image resembling one of physically fit, and maintain and advocate healthy dietary eating
habits both on and off the job. RMFD's current Fire Chief emulates these standards. However, the
Assistant Fire Chief and one of the Battalion Chiefs fall short, detouring the unity and strength
behind the accountability maintaining a positive image.
Additionally, the Fire Chief and his administration are ultimately responsible for the safety and well
being of the department. Safe work practices are paramount at all levels of the fire service. My
department addresses these areas through the National Firefighter Safety Down Day where current
issues and concerns with firefighter safety are address, and teaching material is presented to improve
overall safety.
3) Risk Management
Inherently the fire service operates in high–risk environments to facilitate the role of preserving life
safety and property conservation. How these incidents are managed and safeguarded by our
administration

Persuasive Essay On Vaping
I get it; vaping is fun. I personally don't vape, but I get the appeal. It is a cleaner, better smelling
replacement for standard cigarettes, but sometimes they still make smoke detectors go off. If you are
in your own house, that is fine, but it gets to be a problem when everyone in the entire dorm has to
evacuate because your vapor set off a fire alarm. You will have a long, stressful talk with the people
that run Langdale and maybe a cop or two. The worst case scenario is that you get kicked out of
your room and have to find another place to live, and if you can not find a place, maybe your mom
and dad will take you back. If you get lucky, they might let you off with just a massive fine, but it is
gonna be money out of your pocket either way. Plus, you still did not get to vape. No matter what,
you lose money, and everyone is ticked off. I think everyone relates to being constricted by too
many rules. Some people would not mind that they can not vape whenever they want, but if you
refuse to follow all of their rules, you can still vape. There are many ways to be smart about this.
It seems to me that the easiest solution would be to just go off campus or even just outside if you
just really need to vape. It sounds like it wouldn't be worth it but, you honestly would not have to go
far. There are two parking lots just across the street, and nobody who cares even looks at them for
most of the day. Just take a few seconds to go down the elevator and a then it is a short walk

Questions On Electronic Fire Alarm
Tejas chaturvedi Electronic Fire Alarm
Abstract
Fire alarms are used in the event of a fire or fire drill. They are activated either manually or
automatically . After the fire assurance objectives are established–usually by referencing the base
levels of security commanded by the suitable model construction regulation, protection
organizations, and other authorities–the fire alert architect embraces to detail particular segments,
game plans, and interfaces important to finish these object. This paper specifies various circuits for
detecting fire.
Keywords: Diodes, fire, alarm, thermistor. INDEX: –
1. INTRODUCTION
1.1 Introduction
1.2 Requirements for proper use of fire alarm systems
2. DESIGN AND DEVELOPMENT
2.1 Circuit Diagram
2.2 Layout
2.3 Many types of circuits
3. COMPONENTS
3.1 Resistors
3.2 Capacitors
3.3 LED (Light Emitting Diodes)
3.4 Transistor
3.5 Transformer
3.6 Diodes
3.7 Relay
4. P.C.B. MANUFACTURING PROCESS
5. CONCLUSION
1. INTRODUCTION
1.1 Introduction:– A fire alarm circuit is very useful for security reasons. Gear particularly made for
these reasons for existing are chosen and institutionalized establishment strategies are expected to
the outline. Various circuits can be designed for this purpose .

An automatic fire alarm system is intended to

CISSP Exam Notes
CISSP Exam Notes – Physical Security
1
1. Introduction
1.1 Physical security addresses the physical protection of the resources of an organization, which
include people, data, facilities, equipment, systems, etc. It concerns with people safety, how people
can physically enter an environment and how the environmental issues affect equipment and
systems. People safety always takes precedence over the other security factors.
1.2 Physical security is the first line of defense.
1.3 Major sources of physical security threats are:
Ÿ Weather, e.g. temperature, humidity, water, flood, wind, snow, lightening, etc.
Ÿ Fire and Chemical, e.g. explosion, smoke, toxic material, industrial pollution, ... Show more
content on Helpwriting.net ...
It is a deterrent and delaying device to intruders. There are several types of locks as follows:
Ÿ Preset lock – Typical door lock, which needs to be replaced if the key needs to be changed. Ÿ
Programmable lock or Cipher lock – Lock with key pad which requires a combination of keys to
open the lock, or lock with reader which requires an access card to open the lock. It may have
special options such as:
Ÿ Hostage alarm (support a key combination to trigger an alarm).
4
Ÿ
Ÿ
Master–keying (support key combinations to change the access code and configure the functions of
the lock).
Ÿ Key–override (support key combinations to override the usual procedures).
Device lock (for locking a device rather than for perimeter security):

Ÿ Slot lock – secure a device to a stationary component (e.g. steel cable with lock).
Ÿ Cable trap – secure a peripheral by locking its cable to a stationary component.
Ÿ Power switch lock – lock the on/off power switch of a device (e.g. key–switch).
3.5 A fail–soft lock is unlocked in a power interruption.
A fail–safe (or fail–secure) lock is locked in a power interruption.
3.6 Access card and reader can also be used as an access control mechanism (details can be found in
Chapter 5).
3.7 Fence is another physical access control mechanism. Fences of different heights can serve
different purposes:
Ÿ 3 – 4 feet – deter casual trespassers.
Ÿ 6 – 7 feet – deter

Overvie of CORE Methodology
Overview of CORE Methodology Controlled Requirement Expression (CORE) was developed for
the British Aerospace programs while the UK Ministry of Defence was carrying out a requirement
analysis (Hull et al., 2010). The fundamental component of the CORE methodology is viewpoints as
different users see systems in different ways. There are many different stakeholders involved in a
system; using CORE methodology involves finding all the different viewpoints of those
stakeholders that have an interest in the system whether it's a person, role or organisation ext....
(Sommerville and Sawyer, 2000). By organising viewpoints hierarchy it assists experts to read the
scope and supports the analysis process. CORE Methodology is extensively used for real ... Show
more content on Helpwriting.net ...
This makes the analysing stage easier as you can refer back to the Node Notes if the client doesn't
understand a node. Name Description Smoke Detectors A fire–protection device that automatically
detects and gives a warning of the presence of smoke. Motion Detectors A motion Detector is a
device that detects moving objects particularly people Magnetic Sensors Magnetic Sensors are
usually placed on access points like windows and doors. Magnetic sensors consist of two pieces that
form a circuit and when separated signal control that an alarm event has occurred. Keycard A plastic
card, which has a magnetically encoded data that can be used to open magnetic closed doors.
Validate Card This action involves checking that the keycard is validate and has permission to enter
a zone. Stage 6: CORE Action Diagrams Action Diagram converts specifies processing action from
a Tabular collection diagram into a graphic notation. CORE Action Diagram – Fire System CORE
Action Diagram – Security System The Requirement Document The Requirements Documents
refers to an official report of the systems requirements for customers, end–users and software
developers (Sommerville, 2007). The report should specify what the system delivers, system
properties such as reliability, efficiency, etc.... it should be documented in different notations to
make understandable by a diverse range of people. Architectural Design Architectural Design is the
first stage in the design process;

Installing And Testing Of Fire Alarm Systems

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