A fire detection and alarm system may be activated by automatic detection devices or by manual operation and should fulfil its functions without errors or omissions, including
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detecting quickly enough to fulfil its intended function,
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reliably transmitting the detection signal to the control and indicating equipment and, if applicable, the fire alarm receiving station,
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translating the detection signal into a clear alarm signal that will attract the attention of occupants in an immediate and unmistakable way,
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remaining insensitive to phenomena other than those which its function is to detect, and
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signalling immediately and clearly any supervised fault that might jeopardize the correct performance of the fire detection and alarm system.
A fire detection and alarm system should not
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be adversely affected by any other systems whether associated with it, or not
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be rendered partially or totally inoperative by the fire or the phenomenon which it is designed to detect before the fire or phenomenon has been detected.