1 / 23

SPRINKLER PROTECTION IN ATRIUM SPACES, IS DELUGE AN OPTION?

SPRINKLER PROTECTION IN ATRIUM SPACES, IS DELUGE AN OPTION? . Ing. J.C. (Johan) Hoogeweg DGMR, Netherlands. Introduction :. Objective: To give an insight in the daily practice of a fire engineer regarding High atrium spaces and sprinklers. . The problem? (1). Architect:

skyler
Download Presentation

SPRINKLER PROTECTION IN ATRIUM SPACES, IS DELUGE AN OPTION?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. SPRINKLER PROTECTION IN ATRIUM SPACES, IS DELUGE AN OPTION? Ing. J.C. (Johan) Hoogeweg DGMR, Netherlands Fire Sprinkler International 2014

  2. Introduction: Objective: To give an insight in the daily practice of a fire engineer regarding High atrium spaces and sprinklers. Fire Sprinkler International 2014

  3. The problem? (1) • Architect: • Empty atrium / no fire load • Larger and higher (>40 m) • Users: • no limits in usage: • Seating area’s • (Car) exhibition • Service desks • Shops • Libraries • Stages Fire Sprinkler International 2014

  4. The problem? (2) • Dutch building code: • Fire compartiments (FC) max 1.000 m2, 60 minutes rating between FC’s: • Atrium is > 1.000 m2 • Atrium is open with the surrounding floors (no walls/glass) • Atrium wall is glass (60 minutes rating around 400-600 €/m2) • In the past a atrium without fire compartments was acceptable if: • Slow growing fire (max 25 m2 after 30 minutes) • Smoke and heat venting • However this is no longer generally accepted by the fire brigade • Option: Sprinkler to control the fire Fire Sprinkler International 2014

  5. Sprinkler code limits Fire Sprinkler International 2014

  6. Deluge Concept (1) • Concept: • 100% based on existing sprinkler • technology • Apply water over the total area of • the protected space • Density the same as sprinkler code • (depends on hazard) • System activated by fire detection • system • Sidewall sprinklers or sprinklers under • the ceiling Fire Sprinkler International 2014

  7. Will it work (example case)? * source: VdS office OH1 fire test Fire Sprinkler International 2014

  8. ASD Activation • Activation by fire detection system • reliable detection (false detection  • water!) • Always ‘double knock’ system • Smoke detection and flame detection (all directions) • Fire size: • 0.25 m2 • Foam Flamedetection Fire Sprinkler International 2014

  9. Safegards It’s a complex systems, accidental activation of the system is possible! To prevent unwanted activation: • ‘Double knock’ fire detection • Delay in activation of the system (manual override) Sample: Max. delay time [4:00] Detection time flamedetection Detection time smokedetection [3:00] Activation time sprinkler (calculated/fire test) [7:00] time Fire Sprinkler International 2014

  10. Sprinkler heads • Sprinkler heads: • (EC) sidewall sprinklers • (EC) pendent/upright sprinklers • Listed/approved for risk (VdS/LPC/UL/CE) • Glass bulb removed, after pressure test Fire Sprinkler International 2014

  11. Design Area (1) • Design area: • Location 1: total atrium • Location 2: normal design area sprinkler (e.g. EN 12845 OH 72 m2) • Location 3: • Normal sprinklers + Deluge protection? Fire Sprinkler International 2014

  12. Design Area - Zoned systems • Limit water demand en water • Damage • Fire in zone A: • A+B activated • Fire in zone B: • B+C+D activated • Advanced flame detection required (if possible) • Not possible in square or round atriums • More valves and piping required Fire Sprinkler International 2014

  13. Water management In case of activation, water damage could be a issue: • Water in elevator shafts/server rooms/storage  € € € € € € € • Keep in mind: • Water drains • Barriers (2/3 cm is enough) Fire Sprinkler International 2014

  14. Deluge cases

  15. Case 1: Hilton Amsterdam Airport (1) Fire Sprinkler International 2014

  16. Case 1: Hilton Amsterdam Airport (2) • Ceiling height: 42 meters • 676 m2 (26*26 meters) • ‘no limits’ • parking cars • exhibitions • stages • Seating area’s • Sprinkler code: NFPA 13 • Ordinary hazard group 2 Fire Sprinkler International 2014

  17. Case 1: Hilton Amsterdam Airport (3) • Sprinkler design: • Sidewall sprinklers only • Design area sprinkler: • 4,9 * 7,3 m No coverage in the centre of the atrium Fire Sprinkler International 2014

  18. Case 1: Hilton Amsterdam Airport (4) Solution: Sprinkler column

  19. Case 1: Hilton Amsterdam Airport (5) Design area atrium: • 3 columns • 24 sidewall sprinklers Fire Sprinkler International 2014

  20. Case 1: Hilton Amsterdam Airport (6) • Design area -atrium: • 24 sidewall sprinklers • 291 l/min/sprinkler • Water demand: • 24 sprinklers * 291 l/min * 60 minutes *1.2 (hydraulic imbalance) = • 503 m3 Fire Sprinkler International 2014

  21. Case 2: Eneco World, Rotterdam Position of flamedetection • Ceiling level: 25-35 m • Horeca area • Event area • Sprinkler heads: • Sidewall sprinklers • In the koffee corner Position of sprinkler heads Fire Sprinkler International 2014

  22. Conclusion • Is deluge THE solution: NO • Will deluge control a fire: same a sprinkler (maybe better) • Water damage: YES • Fire and smoke damage: Small • Is deluge A solution: in some cases? Fire Sprinkler International 2014

  23. Discussions • Questions, discussions? • jho@dgmr.nl Fire Sprinkler International 2014

More Related