Client: Newcastle Business School
Project: Supply install and commision controls for Smoke Vent System.
Duration: 5 Weeks
Details: A fire-fighting shaft was required because of the high-rise nature of the project with powered smoke removal from the fire-fighting lobbies for minimum area of smoke shaft.
Equipment supplied for ventilation of the fire-fighting shaft operates as a complete system to provide the mechanical equivalent of what is described in Building Research Establishment (BRE) Project Report 79204.
Primary operation of the system is automatic from smoke detectors in the lobbies.
However, it may be that a fire incident occurs when the building is not occupied.
It could be then that with no escapees entering a lobby from a fire floor and bringing smoke with them smoke detection does not operate to start the ventilation system in the lobby.
Thus as recommended in BRE79204 each lobby contains a fire-fighters switch for fire-fighters to manually operate the ventilation system should they arrive and it not be operating as required to aid fire-fighting operations,
A pressure differential sensing system was provided for use in the escape phase so that in the escape phase the negative pressure created on a door does not exceed the maximum force to open recommended in British Standards.
The fan set contains duty and stand-by fan units with automatic change-over if required and the fan control panels receive duty and stand-by power supplies with automatic changeover if required.