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Legend: Explanations & Illustrations Rationale Note Revision history Print

CLAUSE 7.5 - REDUNDANCY FOR MECHANICAL VENTILATION AND PRESSURISATION SYSTEMS

7.5.1 Provision

The fan and its associated controller for the following systems shall be provided with redundancy such that the system performance is not affected when one of the fans and/or controllers is out of operation due to routine maintenance or breakdown:

a. mechanical ventilation systems for:

(1) smoke-free/fire lift lobbies;

(2) exit staircases; and

(3) essential rooms (e.g. sprinkler/wet riser/hydrant/hose reel pump room, standby generator room, FCC, etc.).

b. engineered smoke control systems;

c. car park smoke purging systems; and

d. pressurisation systems for smoke-free/fire lift lobbies, exit staircase and hotel internal corridor.

7.1.13c.(1)-1

Diagram 7.1.13c.(1) - 1 : Unprotected opening perpendicular to the kitchen exhaust duct

7.1.13c.(1)-2

Diagram 7.1.13c.(1) - 2 : Unprotected opening parallel to the kitchen exhaust duct

7.1.13c.(2)

Diagram 7.1.13c.(2) : Fire resistance construction for kitchen exhaust duct

7.1.13c.(3)

Diagram 7.1.13c.(3) : Installation of non-fire-rated kitchen exhaust duct above LPG cylinders

7.1.13c.(4)

Diagram 7.1.13c.(4) : Installation of non-fire-rated kitchen exhaust duct in close proximity to LPG cylinders and vapouriser

Diagram 7.4.4e.(4)-1 Wiring arrangment of jet fan system

Diagram 7.4.4e.(4) - 1 : Wiring arrangement of jet fan system

7.4.4e.(4)-2

Diagram 7.4.4e.(4) - 2 : Wiring arrangement of jet fan system