Conference paper
Testing regime for fit-for-purpose semi-structural and structural pipe lining
No-Dig Down Under Melbourne 2019 (Melbourne, VIC, 10/09/2019–13/09/2019)
11/09/2019
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Abstract
Deterioration of buried water and sewer pipes is an emerging concern among many utilities in Australia. For critical water pipes, economical methods of pipe rehabilitation, reduced replacement time resulting in minimum water interruption are priorities for water utilities. Rehabilitation of old water pipes by structural cured-in-place pipe (CIPP) and / or spray liners are a relatively new practice in Australia and recently, a number of Australian Utilities have begun trialling some of these liners in their networks. Literature review reveals that currently available standards were originally designed for sewer pipes and are missing some relevant testing required for classifying structural pipe liners for pressurised potable water pipes. This paper presents how the performance of CIPP and spray lining will be tested for development of fit-for-purpose pipe rehabilitation framework Challenges encountered from the test results were given. 1. INTRODUCTION Many water pipes in Australia are currently operating beyond their design life. As yearly maintenance budgets of water utilities for rehabilitation remain constant, and as more pipes reach their design life, water utilities need to carefully select what pipes to rehabilitate or replace (Deo et al. 2018) within budget. This may lead to unexpected costly pipe failures, due to low maintenance budgets, that could be preventable with better condition assessment and/or cheaper rehabilitation methods. Methods such as cured-in-place pipe (CIPP) and structural spray lining could decrease rehabilitation costs by ~20–50% compared to the traditional dig and replace techniques. As per Victorian WorkSafe laws (Genever et al. 2017; Scott 2015), pipe bursting in Australia of Asbestos cement (AC) pipes is banned and therefore new liner replacement techniques are needed, which are not as costly as the traditional dig and replace method. For cast iron pipes, pipe bursting can still be conducted; however, methods of relining that reduce the cost of replacement and reduced replacement time resulting in minimum customers water interruption are a priority. Structural and semi-structural lining for CIPP and spray can be used to increase the expected life of a deteriorated host pipe. However, these techniques are less utilised in Australia as there is no Australian Standard for structural liner installation. In addition, there are no Australian guidelines about life-extension of lined pipes. American and British standards cover the basics for installation, however these standards were originally designed for sewer pipes and are
Details
- Title
- Testing regime for fit-for-purpose semi-structural and structural pipe lining
- Creators
- Benjamin Shannon (Corresponding Author) - Monash University (Australia)Suranji Rathnayaka (Author) - City West WaterGuoyang Fu - Monash UniversityRavin Deo (Author) - Monash University (Australia)Chunshun Zhang (Author) - Monash University (Australia)Jayantha Kodikara (Author) - Monash University (Australia)
- Conference
- No-Dig Down Under Melbourne 2019 (Melbourne, VIC, 10/09/2019–13/09/2019)
- Number of pages
- 9
- Grant note
- The smart linings for pipe infrastructure project (CRC-P) is a collaborative project funded by the Australian Government Business Cooperative Research Centres Program, Water Services Association of Australia, Coliban Region Water Corporation, Hunter Water Corporation, Icon Water Limited, Melbourne Water Corporation, South Australian Water Corporation, South East Water Corporation, Sydney Water Corporation, Northern SEQ Distributor – Retailer Authority, Water Corporation, Bisley & Co PTY LTD, Insituform Pacific Pty. Limited, Kerneos Australia Pty Ltd, Parchem Construction Supplies Pty Ltd, Abergeldie Watertech Pty Ltd, Interflow Pty Ltd, Ventia Pty Ltd, Metropolitan Restorations Pty Ltd, ITS/Downer Pipetech Pty Ltd, Monadelphous Group Limited, UKWIRm Water Research Foundation, Water Environment and Research Foundation, Calucem, Milliken, and Sanexen Environmental Services.
- Identifiers
- 991013296755002368
- Academic Unit
- Faculty of Science and Engineering; Engineering
- Language
- English
- Resource Type
- Conference paper