Options for fire sprinkler system water conservation_ Hayn Wood by runout

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									Options for fire sprinkler system
      water conservation
  Australian Industry Group 4 August 2009

Haydn Wood – Plumbing Industry Commission
  Paul Verheijden – Integrated Fire Services




                                               1
         Project drivers and supports

• 500 million litres annual
  consumption for sprinkler
  system maintenance
• fire protection industry
• water retailers
• Government
• other key stakeholders

                                        2
         Project challenges
• lack of basic data
• lack of knowledge about change options
• fire protection context
• no direct financial incentive
• regulatory hurdles
• contract & market limitations


                                       3
           Project strategy
• main focus on existing buildings
• establish basic facts
• create knowledge about change options
• promote voluntary change
• address regulatory change for existing
  buildings
• mandate conservation for new buildings
                                       4
 Opportunities for water conservation
1.   pressure setting adjustment projects
2.   AS1851-2005 & monthly testing
3.   pressure reducing projects
4.   recirculation of fire sprinkler water
5.   capture and re-use of fire sprinkler water
6.   improved zoning of installations
7.   improved draindown management
                                             5
 1. Pressure setting adjustment (PSA) projects
   Applies to:
   • pump boosted sites with continuously active
     pressure relief valves
   • mains supplied sites, no recirculation tanks
         case study          current use           PSA project
                                kL/pa      est. water saving kL/pa (%)
    B - High Rise Office 2     1,283                836 (65)
    C- High Rise Office 3      2,490               1,880 (75)
     D- High Rise Hotel        1,500                280 (19)
E- High Rise Residential       2,300               1,600 (70)
G-Medium Shopping Centre       9,336               7,100 (76)
   K-Manufacturing Food        2,762               1,800 (65)
L-Manufacturing Automotive     3,026               1,730 (57)
   M- Large Office/Retail      3,424               2,200 (65)            6
    1. PSA projects – main components

• increasing the pressure relief valve operating
  pressure
• increasing the pressure reducing valve
  pressure in the diesel pump raw water heat
  exchange line
• adjusting pump start pressure switches
• producing a pressure schedule for the site


                                                   7
      1. PSA projects – main benefits

• high water saving at low cost
• comparatively easy implementation
• smooth system operation (fine tuning)
• value of a pressure schedule:
  – ongoing guidance to practitioners on properly
    maintaining the sprinkler system to optimal
    design standards
  – one of the main prerequisites for adopting
    monthly testing under AS1851-2005

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   1. PSA projects – actual results
• In the last 7 months the PSA project has been
           Site at
  undertakenNo 9 sites across Melbourne
                    Current Water Water Savings
                    Usage (Litres)    Litres/pa (%)
   – 5 High Rise Buildings
            1       1,552,000         500,000 (32)
   – 3 Manufacturing Sites
            2       1,716,000         787,000 (46)
            3        985,000
   – 1 Shopping centre                625,000 (63)
            4        1,352,000       1,100,000 (81)
• Average 5water savings is 1.7 ML (43) per site
                  3,462,000  1,507,000
                                       /pa
            6        2,480,000       1,353,500 (55)
            7        4,480,000       1,360,000 (30)
            8        2,131,000       1,680,000 (78)
            9        9,336,000       7,000,000 (75)
          TOTAL      27,494,000      15,912,000 (58)
                                                       9
   2.    AS1851-2005 & monthly testing

Best applies to:
• pump boosted fire sprinkler systems
• installations with more than 12 sets of
  installation control valves
• properties that do not have special maintenance
  requirements that specify weekly testing
• installations where monthly testing prerequisites
  are not a difficult barrier
• installations where regulatory hurdles not a
  difficult barrier

                                                  10
            AS1851-2005 & monthly testingtesting
     2.case study   current use AS1851-2005 - monthly
                               kL/pa   est. water saving kL/pa (%)
     A - High rise office1     694              365 (53)
    B - High Rise Office 2     1,283            798 (62)
     C- High Rise Office 3     2,490           1,700 (68)
      D- High Rise Hotel       1,500            673 (45)
E- High Rise Residential       2,300           1,490 (64)
  F- Shopping centre - large   1,866            584 (31)
 G-Medium Shopping Centre      9,336           6,574 (70)
H- Shopping centre - small     242               62 (25)
  I- Manufacturing - paper     1,279             88 (7)
 J- Manufacturing - printing   993              438 (45)
   K-Manufacturing Food        2,762           1,200 (40)
L-Manufacturing Automotive     3,026           2,198 (70)
    M- Large Office/Retail     3,424           2,160 (63)
      N- Small hospital        115               28 (28)             11
    2. AS1851-2005 & monthly testing
            – main benefits


• lower weekly-testing water
  consumption - 75% cut
• more rigorous, comprehensive and
  cohesive maintenance regime


                                       12
              3. Pressure reducing projects
Applies to:
• pump boosted sites with continuously active
  pressure relief valves

         case study          current use kL/pa    pressure reducing project
                                                 est. water saving kL/pa (%)
    B - High Rise Office 2        1,283                   836 (65)
    C- High Rise Office 3         2,490                  1880 (75)
E- High Rise Residential          2,300                  1,600 (70)
G-Medium Shopping Centre          9,336                  7,100 (76)
   M- Large Office/Retail         3,424                  2,200 (65)




                                                                               13
      3. Pressure reducing projects
Consists of:
• installation of pressure relief valves
• reduction of engine speed in diesel engines
• smaller impellor in electric pumps

Main benefits:
• substantial water savings at low cost
• comparatively easy implementation

                                                14
    3. Pressure reducing projects
• Project applied at a manufacturing site the
  contains 2 diesel pumps
• Results:
  – Prevented pumps from pressuring the system at
    1800 kPa
  – Increased pressure relief valves to maximum
    pressure
  – Saved 1,360,000 litres of water per year


                                                    15
               Further options

4.   recirculation of fire sprinkler water
5.   capture and re-use of sprinkler water
6.   improved zoning of installations
7.   improved draindown management




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Next steps:
• promote adoption - communication campaign
• ongoing upgrade of website knowledge base
• potential regulatory change
• nationally funded implementation

More information:
• project website: www.pic.vic.gov.au –
  PlumbSmarter fire sprinkler project
• project manager: Haydn Wood - 9285 6438
  or hwood@buildingcommission.com.au
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