Fire detection and fire alarm systems - Alarm transmission and fault warning routing equipmentBS EN 54 21: 2006 specifies requirements, test methods and performance criteria against which the effectiveness and reliability of routing equipment capable of transmitting fire alarm and or fault warning signals for use with fire detection and fire alarm systems installed in buildings can be assessed (see EN 54 1). The routing equipment is designed to allow the system to function in accordance with the requirements of this European Standard. It also

including heating

It is not intended to provide a fire-engineered solution for any particular design

The information is transmitted using digitized signals to automatic receiving centre transceivers at remote centres

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Inspection document

BS EN ISO 17663:2009 Welding

The guidance contained in this European Standard is not intended to be exhaustive

BS EN 1992-3 covers additional rules to those in BS EN 1992-1 for the design of structures constructed from plain or lightly reinforced concrete

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design and implementation

Example use