The Cygnus wireless alarm system has been incorporated within yet another impressive project; 100 Bishopsgate.
This extensive venture is a 950,000 ft2 development of elite offices and retail accommodation at the heart of the City of London EC3, which is accompanied by a new 0.5 acre public realm. It is a 60 second walk to Liverpool Street station and is convenient for all means of local attractions and facilities. The overall height of the building is 181 metres with 37 floors in total and is completely glazed from top to bottom. An adjoining 7 storey building is part of the project and will incorporate an exquisite restaurant on ground floor with 5 floors of offices above. This part of the project will be constructed behind a retained façade and open out onto a public plaza.
Specified By Main Contractor Multiplex
Main contractor Multiplex had specified that The Cygnus Wireless Fire Alarm System should be installed due to its reliability, adaptability and advanced features as a temporary fire alarm system. There are over 100 Cygnus alarm units installed on this major construction project, including the Cygnus fire call point alarm and the Cygnus combined fire and first aid call point alarm. All of these alarms that are located around the site, with at least 1 unit on each floor, are connected to a main control panel which is situated in the main site office on ground floor.
Specific Requirement – Problem
Multiplex as with all construction companies, wanted to try and eradicate false alarms which would occur evacuating the whole site, bringing progress to a standstill and incurring high costs of time and labour. The common cause of false alerts is due to accidental or deliberate malicious activations of alarm call points, which would then set off the whole alarm system creating an entire site evacuation.
Flexible System – Problem Solved
The Cygnus system that was installed on site was pre-configured with a double knock function which is also known as a sounder delay. This enables authorities to respond to alerts that appear on the main control panel within 10 minutes to make sure the alert is genuine before the site is evacuated. If an alert is found to be genuine and is a real emergency the site can be evacuated by a touch of a button on the panel; if the alerts are accidental or of an ulterior motive, the alerts can be cancelled and the system can be reset.