volume 1 - Halifax Regional Municipality

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<strong>Halifax</strong> Water Integrated Resource Plan Appendices Table 2.2 presents the results of this analysis for the water system. The table also includes the current system average life and fraction above design life statistics based on best available asset age data. The data of Table 2.2 indicate the following: • At present a significant fraction of the distribution and transmission mains as well as the water meters are beyond design asset life. The M&E and ICA components of the treatment facilities and pumping stations are all presently within design life. • Modelling results for asset renewal levels A level through C level all maintain a zero % fraction above design life for the pump stations and WSPs at the end-ofperiod. • There is some differentiation by level of renewal in the large WSPs. C level shows a larger increase in average age than A level. The small WSP present approximately the same end-of-period average age in all cases. The increase in average age should not necessarily be alarming. It is dependent on a number of factors including the backlog of renewal requirements at the beginning and end of the period. The asset renewal process should be viewed in a dynamic light as not necessarily reaching equilibrium for all assets during the 30-year planning period. Indeed, longer-term analysis spanning 100 to 200 years can be employed to minimize the impact of the current relatively short planning period. • The asset renewal modelling results for distribution mains show an increase in fraction above design life for all levels of asset renewal. The A level nearly maintains the status quo at 14%. • The fraction above design life for the transmission mains shows improvement at the A and B levels of asset renewal while the fraction increases at the C level. The average results increase in all cases with smaller increases associated with the A and B levels versus the C level. Table 2.2 Water System Asset Average Age and Fraction Above Design Life Asset Design Asset Life (Years) Variation Average Asset Life (Weighted Age) (Years)* Fraction Above Design Life (Proportion Greater than Expected Life)* End-of-Period Asset Age (Weighted Age) (Years)* End-of-Period Fraction Above Design Life (Proportion Greater than Expected Life)* Distribution Mains 75 A 44.80 14.00% B 42.29 12% 49.24 20.00% C 56.02 28.00% Revision: 2012-10-29 Integrated Resource Plan –Appendices F-11 October 31 2012 Page 190 of 272
<strong>Halifax</strong> Water Integrated Resource Plan Appendices Table 2.2 Water System Asset Average Age and Fraction Above Design Life Asset Design Asset Life (Years) Variation Average Asset Life (Weighted Age) (Years)* Fraction Above Design Life (Proportion Greater than Expected Life)* End-of-Period Asset Age (Weighted Age) (Years)* End-of-Period Fraction Above Design Life (Proportion Greater than Expected Life)* Transmission Mains 75 A 50.85 2.00% B 45.49 10% 53.15 6.00% C 60.69 14.00% Meters 20 A Residential - Residential - R-21.27, C-9.91 R-51%, C-0% 17.62, 39%, B R-24.79, C-20.69 R-60%, C-53% Commercial Commercial - C - 13.71 17% R-31.04, C-25.09 R-74%, C-64% PRVs Civil - 50 M&E - 20 A 14.69 0.00% B 9.83 0% 15.93 0.00% C 17.96 0.00% A 56.72 27.00% Valves 75 B 36.13 4% 58.05 28.00% Pumping Stations Civil - 50 M&E - 20 ICA - 10 C 59.24 30.00% A 13.59 0.00% B 4.88 0% 13.55 0.00% C 13.65 0.00% Concrete Storage Reservoirs Varies by Reservoir n/a Reservoirs were assessed on a project-by-project basis NA NA Steel Storage Reservoirs 20 n/a Reservoirs were assessed on a project-by-project basis NA NA Dams 20 . n/a Dams were assessed on a project-by-project basis NA NA Revision: 2012-10-29 Integrated Resource Plan –Appendices F-12 October 31 2012 Page 191 of 272
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VOLUME 1: INTEGRATED RESOURCE PLAN
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Halifax Water Integrated Resource P
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Financial Model 40-4 Halifax Water
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Financial Model 40-4 2.512 (O&M) Lo
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Financial Model 40-4 1.028 Cavalier
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Financial Model 40-4 3.511 Stokil (
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Financial Model 40-4 2.075 Beaver C
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Financial Model 40-4 2.848 Storage
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Summary of Capital, Operational and
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Asset Renewal Costs Halifax Water I
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Asset Renewal Costs Stormwater Asse
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Statement Concerning Halifax Water
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Statement Concerning Halifax Water
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volume 1 - Halifax Regional Municipality

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