Presentation is loading. Please wait.

Presentation is loading. Please wait.

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

Similar presentations


Presentation on theme: "SPRINKLER PROTECTION IN ATRIUM SPACES, IS DELUGE AN OPTION? Ing. J.C. (Johan) Hoogeweg DGMR, Netherlands Fire Sprinkler International 2014."— 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

3 The problem? (1) Fire Sprinkler International 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

4 The problem? (2) Dutch building code: Fire compartiments (FC) max m2, 60 minutes rating between FC’s: Atrium is > m2 Atrium is open with the surrounding floors (no walls/glass) Atrium wall is glass (60 minutes rating around €/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

5 Sprinkler code limits CodeMax hightremark EN meters Discussion if this is acceptable (will K80 sprinklers control a fire?) FM global30 meters Wet systems only Limited ceiling slope Lot of fire damage (fire and smoke) due to late activation Test reports are ‘secret’. NFPA 1315,3 meters Discussion if this is acceptable Fire Sprinkler International

6 Deluge Concept (1) Fire Sprinkler International 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

7 Will it work (example case)? Fire Sprinkler International AspectReal fire testDeluge concept HazardEN 12845: OH1 Density5 mm/min Design Area72 m2Total atrium (>72 m2) Ceiling height8 meters31 meters ActivationSprinkler headFire detection system First sprinkler / system activated18:34 [min:sec]*< 5 minutes Fire sizeLargeSmaller than sprinkler Fire controleYES * source: VdS office OH1 fire test

8 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 Fire Sprinkler International ASD Flame detection

9 Safegards It’s a complex systems, accidental activation of the system is possible! To prevent unwanted activation: 1)‘Double knock’ fire detection 2) Delay in activation of the system (manual override) Sample: Fire Sprinkler International Detection time flame detection Activation time sprinkler (calculated/fire test) [7:00] time Detection time smoke detection [3:00] Max. delay time [4:00]

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

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

12 Design Area - Zoned systems Fire Sprinkler International 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

13 Water management Fire Sprinkler International 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)

14 Deluge cases Building Police Academy, ApeldoornCurved ceiling Outside FM 3-26 / FM 2-0 scope Hirsch building, store8 meter atrium Architect: no sprinklers under glass roof Rijksmuseum, AmsterdamProtection of restaurant seating area Existing roof structure Eneco HQ RotterdamAtrium height: 25 m Pre FM 3-26 K360 Hilton SchipholAtrium height: 42m 14

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

16 Case 1: Hilton Amsterdam Airport (2) Fire Sprinkler International 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

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

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

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

20 Case 1: Hilton Amsterdam Airport (6) Fire Sprinkler International 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

21 Case 2: Eneco World, Rotterdam Fire Sprinkler International Position of sprinkler heads Position of flame detection Ceiling level: m Horeca area Event area Sprinkler heads: Sidewall sprinklers In the koffee corner

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

23 Discussions Questions, discussions? Fire Sprinkler International


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

Similar presentations


Ads by Google