Syrereducerande anlägg – Vad är det ?

1. Syrereducerande anlägg – Vad är det ? Erik Secher Kidde Sweden AB

2. Hypoxic Air Ventilation (HAV) A revolution in Fire Protection PAS 95:2011 (Draft) BSI 2010

3. Some dimensions about fire In Europe, each year • 20,000 to 25,000 deaths • 250,000 to 500,000 injuries • 80% of deaths and injuries occur in buildings • 20 Billion Euros in Fire related insurance claims • 1 Historic building lost per day • Massive disruption to business • Irreplaceable loss of our Cultural Heritage • Fire is the major driver of commercial insurance cost Which means

4. Using ordinary air to save lives and property • Prevenex: Uses compressor to reduce oxygen content. • Oxyreduct: Uses Nitrogen Generators to reduce oxygen level. • Inward Leakage • Maximum oxygen concentration level • Minimum oxygen concentration level • Oxygen alarm level • Acceptable space for human occupancy

5. 100 80 60 40 20 0 Prevenex Atmosphere Ability to support combustion % 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 Oxygen percentage at sea level. % At 16.2% Oxygen, the large Nitrogen atoms extract heat from the combustion process at such a rate that it cannot continue. In effect, there are enough nitrogen atoms to form a ‘fire blanket’ around each oxygen atom. No fire can start.

6. 15 million people live permanently at 2,500m or more 100 80 60 40 20 0 Aspen Colorado La Paz Bolivia Level of oxygen saturation in the bloodstream % Mexico City Highest piste Chamonix Prevenex Injection Prevenex Atmosphere N2 injection Death Zone 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 Oxygen percentage at sea level. % Tiny decrease in Blood Oxygen Level from 98% to 95% saturated Small initial increase in breathing and heart rates, which return to normal with extended exposure It’s as healthy as clean mountain air

7. Compact, Unobtrusive & Automatic • On site generators create and maintain set oxygen levels totally automatically • Multiple rooms independently controlled from one unit. • Virtually silent and un-noticeable in the protected space. • Protects in even the most inaccessible locations – inside cabinets, in • ducts, in ceiling voids, even inside packaging – anywhere that there is air. • Humidity and Temperature control can be integrated. • Simple to install in new or existing locations Control Cabinet O2 Sensors Protected space Modified Air Compressor system Reducing Module Air Silencer

8. Massive savings on space A conventional Inert Gas suppression system to protect a 6,000 cu.m. space A Prevenex HAV module to protect TWICE the volume spread over 6 rooms More floor space available for revenue generation Installation time and cost reduced by 70% or more Minimal impact on the building

9. Cost Comparison - Installation RelativeCost Volume of Risk m3 Slide courtesy of LPG Fire Ltd

10. Operating cost: 10 years with 1 discharge Relative Cost Volume of Risk m3 Plus up to 60% of Prevenex compressor energy can be recovered as heat Slide courtesy of LPG Fire Ltd

11. Summary • Risk of Fire totally removed, even in inaccessible places. • No need for Pressure Relief Dampers or Extraction Systems • Greatly simplified installation. • Small footprint – more space available for revenue generation • Increasingly cost effective above 2,000m³ • Virtually no pipes or other equipment in the protected areas. • No need to provide positive pressure to maintain high air quality Note: It is suggested that a aspirating smoke detection system be installed to warn of any smouldering events due to short circuits etc.

12. Questions and answers !