2015-10-13 Infrastructure & Services Committee Agenda

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RISKS                                                                      or
   1. Culvert failures                                        Asset condition
  2.  Assets within sensitive environments.                   The level of confidence in stormwater asset
  3.  Stormwater pipe failures causing flooding               condition is deemed to be very low. The current
      to property.                                            asset conditions utilised in this plan are determined
  4. A lack of condition knowledge across the                 on an “aged based” calculation and therefore do not
      network    contributing   to _ ill-informed             reflect their true physical condition.
      decisions.                                              This approach does not take into account assets
  5.  Stormwater infrastructure in road carriage              that are impacted by their environmental conditions
     ways.                                                    such as active soils, marine locations, or are
                                                              structures within road carriage ways or have poor
                                                              construction techniques. Therefore a more detailed
                                                              physical condition assessment is required before
     =                                                        renewal investment can be considered.
     S                             s,s
     2 Age Based Condition                                    Physical condition assessments have commenced
     s              P   fil                                   through the annual CCTV inspection programme.
     $s               rome                                    These inspections make the use of advanced
     3%                                                       technology by utilising a combination of robotic
     £100,000                                                 equipment, video imagery and software systems to
     ¢                                                        provide high level detail on the condition of any
     @ 50,000               il                                given stormwater asset inspected. These
     o       0   Gi                                           inspections not only record maintenance defects
                                                              but also asset condition supported by photo and
                   d.   2     3     4     5                   video imagery.
                      Condition Rating
                                                                                 EES
                                                              [EEG     YER    tern eed eer
                                                                  1    Very Good Condition   ;
Asset renewal                                                          Only normal mainetnance required
                aes               Oa                              2    Minor Defects Only
Although the existing renewal activities are a                         Minor maintenance required (5%)
result of asset failure and defect detection, the                      Maintenance Required To Return to Accepted
development of a renewal programme will improve                   3 _ Level of Service      oa cae
the capability of predicting intervention                                a                  aia       )
 3                                                                4    ‘equires ‘enewal
timeframes.                                                            Significant renewal/upgrade required (20-40%)
Stormwater renewals are one of the first asset                    5   Asset Unserviceable
classes outside of roads that have a funded                            Over 50% of Asset requires replacement :
annual renewal program for pipes, pits, kerb and
channels. In addition to these renewals an annual             The Physical Asset Condition is measured using the “core asset
      ot ee,    5       a                                     management approach” based on a 1 - 5 scale from the IIMM,
proactive CCTV inspection has commenced to                    Intemational Edition 2011. This is a universal approach being
further develop and prioritise asset renewal.                 used for the majority of Council's infrastructure until more
                                                              advanced asset management practices are considered.

   Improvement Plan
       1.  Continue with cyclical maintenance inspections and CCTV condition assessments across stormwater
           infrastructure with results and overall asset condition (based on the core asset management approach)
           recorded in the asset system;
       2.  Reconcile financial asset data, GIS data and Inspection data to ensure a single point of truth for asset data
           within the asset system;
       3.  Develop a long term asset replacement programme integrated with financial planning and asset
           deterioration modelling;
       4.  Produce ‘next generation’ Asset Management Plans at a lower level of asset class hierarchy, for example
          specific to pipe network, kerb and channel, bio-basins

  NOOSA COUNCIL                    PO Box 141                     P. (07) 5329 6500         [email protected]
  r Set iD: 199678:                TEWANTIN QLD 4565              F. (07) 5329 6501         www.noosa.qld.gov.au

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