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Fire Alarm System Design
Afire alarm systemis a building system designed to detect, alert occupants, and alert emergency forces of the presence offire,smoke,carbon monoxide, or other fire-related emergencies. Fire alarm systems are required in most commercial buildings. They may include smoke detectors, heat detectors, and manual fire alarm activation devices (pull stations). All components of a fire alarm system are connected to afire alarm control panel. Fire alarm control panels are usually found in an electrical or panel room. Fire alarm systems generally use visual and audiosignalizationto warn the occupants of the building. Some fire alarm systems may also disableelevators, which are unsafe to use during a fire under most circumstances.[1]
Chelmsford (/ˈtʃɛlmzfəd/) is a city in the City of Chelmsford district in the county of Essex, England. It is the county town of Essex and one of three cities in the county, along with Southend-on-Sea and Colchester. It is located 30 miles (50 kilometres) north-east of London at Charing Cross and 22 miles (35 kilometres) south-west of Colchester. The population of the urban area was 111,511 in the 2011 Census,[1] while the wider district has 168,310.[2][3]
The demonym for a Chelmsford resident is "Chelmsfordian".
The main conurbation of Chelmsford incorporates all or part of the former parishes of Broomfield, Newland Spring, Great Leighs, The Walthams, Great Baddow, Little Baddow, Galleywood, Howe Green, Margaretting, Pleshey, Stock, Roxwell, Danbury, Bicknacre, Writtle, Moulsham, Rettendon, The Hanningfields, The Chignals, Widford and Springfield, including Springfield Barnes, now known as Chelmer Village.
The communities of Chelmsford, Massachusetts, Chelmsford, Ontario and Chelmsford, New Brunswick are named after the city.
Chelmsford's population consists of a large number of City and Docklands commuters, attracted by the 30–35-minute railway journey into Central London via the Great Eastern Main Line.
