It was local council concerns of the perceived risks from SARS and other airborne viruses that resulted in an innovative, new drainage solution at the iconic O2 arena.
Studor, with their deep knowledge of drainage ventilation systems, worked together with ME Engineers and a team at Heriot-Watt University. The Studor System solution incorporated Studor Air Admittance Valves (AAVs) coupled with P.A.P.A. (Positive Air Pressure Attenuator) units. The P.A.P.A. acts like a shock absorber, dissipating pressure waves and stopping them bouncing around the plumbing system, thereby eliminating the need for roof penetrations at the O2.
The university team which worked alongside Studor, determined that any gas build-up would follow the water flow. By placing all urinals on a twelve-hour flush cycle they greatly alleviated the potential of any gas build-up problem.
While inside the O2 the full drainage and ventilation system is sealed, the outside pump stations are on pillars with open vents that are spaced 300 metres apart to dispense any odours are generated within the complex.