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Sprinklers Evolved by Allan Macpherson, FM Global. IFE Scotland and BAFSA : Technical Sprinkler Seminar 2010 National Library of Scotland 20 January 2010. It started simply…. Summer, 1891. Then in the 1950’s…. Standard Spray Sprinkler. Then came…. A bunch of Control Mode Density

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sprinklers evolved by allan macpherson fm global

Sprinklers Evolvedby Allan Macpherson, FM Global

IFE Scotland and BAFSA : Technical Sprinkler Seminar 2010

National Library of Scotland

20 January 2010

then in the 1950 s
Then in the 1950’s…

Standard Spray Sprinkler

then came
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

other milestones
Other Milestones
  • 1970 ----> Residential Sprinkler
  • 1970 ----> Large Orifice Sprinkler (CMSA)
  • 1980 ----> ESFR (SM)
leading to
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

where we are in 2009
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
stepping back
Stepping back…
  • Existing terminology misleading
  • Actual performance can be otherwise
    • Control mode sprinklers - fire suppression
    • Suppression mode sprinklers - fire control
change in sprinkler terminology
Change in sprinkler terminology
  • New terminology based on intended use:
    • Storage sprinkler
    • Non-storage sprinkler
    • Special protection sprinkler
slide10

Quiz

True or False?

Two different FM Approved control mode sprinklers discharging the exact same amount of water will provide equivalent protection

slide11

K 360

  • K 80
slide13

K 80

250 l/min @ 10 bars

K 360

250l/min @ .5 bar

Light fog

- Minimal penetration

- Easily pushed aside

- Prone to skipping

Heavy downpour

- Better penetration

- Difficult to push aside

- Skipping less likely

test 2 k 360 ec sprinkler
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

what s really most important
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
what does this mean for data sheets
What does this mean for Data Sheets?
  • Need to update sprinkler terminology
  • Need to replace density in design criteria
  • Opportunity to simplify and improve
new data sheet 2 0
New Data Sheet 2-0
  • Replaces 2-2, 2-7, 2-8N
  • Installation rules – sprinkler type
  • Acceptance tests
new data sheet 8 9 protection tables
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
slide22

Protection tables based on

    • Ceiling height
    • RTI (standard or quick response)
    • Orientation (upright or pendent)
    • Sprinkler K factor (~ nozzle size)
many of these new designs mean
Many of these new designs mean:

Less Resources

  • Less Sprinklers
  • Less Piping

More Sprinklers Installed !

Greater Sustainability

  • Less Labour
  • Less Water
  • Lower Pressures
what is the bottom line
What is the bottom line?

Through these Data Sheet changes, FM Global is poised to provide our clients, with themost effective protection options, which are not onlysimplerandcheaperto install, but a moresustainablechoice.