Risk Assessment of Wastewater Networks Infrastructure

The wastewater collection network in metropolitan Adelaide consists of a large number of assets distributed over a wide geographic area. This poses significant challenges in both conducting and prioritising asset management activities for these assets, including maintenance, rehabilitation, condition assessment and replacement. United Water has met these challenges in a cost-effective manner by developing prioritisation models utilising the functionality of GIS and InfoNet. The wastewater collection system in Adelaide includes over 80,000 wastewater access chambers, termed ‘manholes’, and 900 sewer vent stacks, commonly known as ‘educt vents’.

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Mobile Geographical Information Systems Implementation for Water Infrastructure

Today mobile computing technology is an integrated part of our business processes as it enables non-location specific task completion. Geographic Information Systems (GIS) are a vital source of information for field-based workers; however this information is normally only available via a PC and corporate network. The combination of GIS and mobile computing technology enables field-based staff to make informed decisions in the field without the need to ‘return to base’ or attempt to transmit this information over the phone.

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Identifying and Managing the Community Infrastructure Asset Renewal Gap

Sustaining our community infrastructure and assets is potentially the greatest challenge faced by Local Governments across Australia. At risk is the continued sustainability of assets which support the delivery of many of our community services. Most states have identified a substantial emerging gap in Local Government’s capacity to renew it assets. We suggest the problem is broader than the conventional asset management activities and fundamentally requires that we have informed debate at both the national and local levels. In order to have such an informed debate we need access to reliable, consistent and relevant information. However, experience has shown that trying to obtain this information is difficult. In most cases it does not exist and where it does exist it is frequently inadequate. This paper
outlines a project that is currently in progress that aims to develop a national framework for the exchange of community asset information. As a result we hope to be able to inform the debate that must occur if we are to solve the issue of the renewal gap for community assets. Click here to read more

Asset Renewal Decision Modelling For Public Infrastructure Assets

This paper develops a new approach to stochastic modelling of asset renewal timing decisions using net present value derived from attributable revenue and total cost of ownership. This renewal decision model proposed has the advantage of aligning the efforts of asset custodians to the financial needs of the infrastructure management business. Secondly, we identify the option to perform Front End Engineering (FEE) as part of the asset renewal decision process and use the Black Scholes [1] call option formula to calculate the value of an option to perform FEE. The ratio of option value to option cost is suggested as a means of prioritising front end engineering for renewal projects. Click here to read more