Sprinklers Evolved by Allan Macpherson, FM Global · Then in the 1950’s ... 30 30 @ 50psi 25 @...
Transcript of Sprinklers Evolved by Allan Macpherson, FM Global · Then in the 1950’s ... 30 30 @ 50psi 25 @...
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Sprinklers Evolvedby Allan Macpherson, FM Global
IFE Scotland and BAFSA : Technical Sprinkler Seminar 2010National Library of Scotland
20 January 2010
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It started simply…
Summer, 1891
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Then in the 1950’s…
Standard Spray Sprinkler
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Then came…
A bunch of Control Mode Density Area (CMDA) sprinklers…
- Large Orifice Sprinkler
- Extra Large Orifice (ELO) Sprinkler
- Very Extra Large Orifice (VELO) Sprinkler
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Other Milestones
1970 ----> Residential Sprinkler 1970 ----> Large Orifice Sprinkler (CMSA)
1980 ----> ESFR (SM)
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Leading to…
more Control Mode Density
Area (CMDA) sprinklers…
and a bunch of Control Mode Specific Application (CMSA) sprinklers…
…and a bunch of Suppression Mode (SM) sprinklers
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Where we are in 2009? Three different sprinkler categories
Three sets of installation guidelines (461 pages of guidance!)
Terminology indicates intended performance
Two different design formats
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Stepping back…
Existing terminology misleading
Actual performance can be otherwise
> Control mode sprinklers - fire suppression
> Suppression mode sprinklers - fire control
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Change in sprinkler terminology
New terminology based on intended use:
> Storage sprinkler
> Non-storage sprinkler
> Special protection sprinkler
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True or False?
Two different FM Approved control mode sprinklers discharging the exact same amount of water will provide equivalent protection
Quiz
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K 80
K 360
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K factor video
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K 80250 l/min @ 10 bars
K 360250l/min @ .5 bar
Light fog - Minimal penetration - Easily pushed aside - Prone to skipping
Heavy downpour - Better penetration - Difficult to push aside - Skipping less likely
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Test 1 – 32 mm/min density / upright
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Test 2 –24 mm/min density / pendent
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Test 2 – K 360 EC sprinkler Lower water demand
> 10.7 m. building 6 sprinklers at 2.75 bars 3600 l/min
More cost effective > Spacing up to 18 m2 per head means less pipe, fewer
sprinklers> Much less fire, smoke and goods damage
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What’s really most important?
Sprinkler K factor (~ nozzle size) Orientation (upright or pendent) RTI (standard or quick response)
… and not so much
Ceiling discharge density
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What does this mean for Data Sheets?
Need to update sprinkler terminology
Need to replace density in design criteria
Opportunity to simplify and improve
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New Data Sheet 2-0
Replaces 2-2, 2-7, 2-8N
Installation rules – sprinkler type
Acceptance tests
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New Data Sheet 8-9 & Protection Tables
Needed to update terminology
Transition design format away from density
Easier to identify the best protection options
Paves the way for future improvements
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Protection tables based on> Ceiling height> RTI (standard or quick response)> Orientation (upright or pendent)> Sprinkler K factor (~ nozzle size)
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Ceiling Height, ft
K11.2 K16.8 K11.2 K14.0 K25.2 K14.0 K16.8 K25.2EC K14.0 K16.8 K22.4 K25.2 K25.2EC
2015 @ 25psi
15 @ 15psi
15 @ 25psi
15 @ 20psi
12 @ 7psi12 @ 20psi
12 @ 15psi
6 @ 7psi12 @ 20psi
12 @ 15psi
12 @ 10psi
12 @ 7psi 6 @ 7psi
2520 @ 30psi
20 @ 20psi
15 @ 30psi
15 @ 25psi
12 @ 10psi
15 @ 25psi
12 @ 20psi
6 @ 15psi12 @ 25psi
12 @ 20psi
12 @ 15psi
12 @ 10psi
6 @ 15psi
3030 @ 50psi
25 @ 35psi
25 @ 50psi
25 @ 40psi
12 @ 15psi
15 @ 50psi
15 @ 30psi
8 @ 30psi12 @ 50psi
12 @ 35psi
12 @ 20psi
12 @ 15psi
8 @ 30psi
35 -30 @ 40psi
30 @ 75psi
30 @ 60psi
15 @ 25psi
20 @ 60psi
20 @ 40psi
10 @ 40psi
12 @ 60psi
12 @ 40psi
12 @ 30psi
12 @ 25psi
10 @ 40psi
40 - - - -15 @ 40psi
- -14 @ 50psi
12 @ 75psi
12 @ 50psi
12 @ 40psi
12 @ 35psi
14 @ 50psi
45 - - - -20 @ 50psi
- - - -15 @ 75psi
12 @ 60psi
12 @ 50psi
-
Protection for Class 4 and Cartoned Unexpanded Plastics on Wet-Pipe System;
160°F Standard Response AS 160°F Quick Response AS
Ceiling Storage Sprinklers: Numper of sprinklers @ psi
Upright Pendent Upright Pendent
Sample protection table
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Many of these new designs mean:
Less Sprinklers
Less Piping
Less Labour
Less Water
Lower Pressures
Less Resources
Greater Sustainability
More Sprinklers Installed !
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What is the bottom line?
Through these Data Sheet changes, FM Global is poised to provide our clients, with the most effective protection options, which are not only simpler and cheaper to install, but a more sustainable choice.