Fire detection system
Fire is one of the most dangerous events possible; somewhere in the world, one occurs every minute of every day. While fire can be our friend in some instances, it can be our worst enemy when it’s uncontrolled and allowed to continue through a building. Fire is, of course, destructive, and the smoke from a fire creates a toxic, dangerous atmosphere. The rapid detection of a fire and its control can save several thousand lives, thousands of injuries, and millions of dollars in property loss each year.
The field of fire detection has advanced to where smoke detectors and alarm devices have combined to become life-safety systems. The purpose of an automatic fire-alarm system is to detect an occurrence, alert the control panel and proper authorities, and notify the occupants to take action.
Current Fire-Detection Systems
The automatic fire-detection system, like any other asset, has a lifespan of 10 to 15 years. After 15 years, it is no longer considered reliable, and there may not be parts available for its repair. The fire-detection system today consists of an FACP (fire alarm control panel) – this is the system’s brain, and it’s capable of making rapid decisions. Detection devices run the gamut, from smoke detectors and heat detectors to multi-capability detectors, which contain a number of functions in one detector. Many of the detectors manufactured today have addressable switches contained in the detector that allows the detector to tell the FACP exactly where the fire is located. The detection devices detect the presence of smoke or particles of combustion and then alert the FACP about a problem; the FACP then decides what action to take.
Your fire-detection system can also:
- Discharge clean agent fire-suppression systems in computer rooms or clean rooms.
- Activate deluge fire systems in aircraft hangers or similarly dangerous areas.
- Open a dry pipe sprinkler system for a pre-action suppression system.
- Be used for notification of other events, such as severe weather, terrorism, bomb threats, hazardous chemical incidents, evacuation, etc. These events may utilize the speaker systems to provide voice instructions for action or protect in place. Modern FACPs may have telephone handsets in stairwells and elevators for two-way communication with people who are trapped.
- Monitor carbon-monoxide detectors.
Keep in mind that there are a number of specialized detection devices designed to increase life safety and reduce the potential for unwanted or nuisance alarms. There are also qualified professionals who can provide valuable assistance in reviewing the circumstances of your operation and provide guidance and recommendations for your needs.
It’s important to note that all fire alarm and detection systems require periodic care and maintenance. Depending on the local AHJ (authority having jurisdiction), there may be requirements for annual, semi-annual, or monthly system testing. Testing must be conducted by competent, well-trained personnel. A properly installed and maintained system saves lives and reduces property damage.
Author: Richard J. Keyworth
CCTV (Closed Circuit Television)
CCTV (closed-circuit television) is a TV system in which signals are not publicly distributed but are monitored, primarily for surveillance and security purposes.
CCTV relies on strategic placement of cameras, and observation of the camera’s input on monitors somewhere. Because the cameras communicate with monitors and/or video recorders across private coaxial cable runs or wireless communication links, they gain the designation “closed-circuit” to indicate that access to their content is limited by design only to those able to see it.
Older CCTV systems used small, low-resolution black and white monitors with no interactive capabilities. Modern CCTV displays can be color, high-resolution displays and can include the ability to zoom in on an image or track something (or someone) among their features. Talk CCTV allows an overseer to speak to people within range of the camera’s associated speakers.
CCTV is commonly used for a variety of purposes, including:
Maintaining perimeter security in medium- to high-secure areas and installations.
Observing behavior of incarcerated inmates and potentially dangerous patients in medical facilities.
Overseeing locations that would be hazardous to a human, for example, highly radioactive or toxic industrial environments.
Building and grounds security.
Obtaining a visual record of activities in situations where it is necessary to maintain proper security or access controls (for example, in a diamond cutting or sorting operation; in banks, casinos, or airports).
CCTV is finding increasing use in law-enforcement, for everything from traffic observation (and automated ticketing) to observation of high-crime areas or neighborhoods. Such use of CCTV technology has fueled privacy concerns in many parts of the world, particularly in those areas in the UK and Europe where it has become a routine part of police procedure.
PA solution can be applied in a large factory to meet the needs of public broadcasting. It can realize the multiple functions of public address such as emergency broadcast, business announcement, and background broadcast. The main control host can be placed in the control room while the loudspeakers can be placed in appointed places like avenues around the factory, parking lot, workshop, warehouse, office, corridors, etc.
Zone management, no limit in setting up zones, can group the zones as required；
An emergency announcement, real-time voice broadcast with the emergency microphone;
Background broadcast, play background music in different zones;
A business announcement can broadcast announcement, news and other voice messages to appointed zones;
Remote control and monitor can send demands to the control host in any place and monitor the running programs via the network
Remote paging, realize remote paging with the call station;
Intelligent program timing;
Automatic data backup and recovery;
Communicate with the fire center;
One key alarm function.