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Determination of the change in Hydraulic Capacity in Pipelines
Expanded Title:It is generally accepted that the operational live of pipelines could be well longer than the 30 years which are used in the economic analyses of pipeline systems. Networks of Rand Water and other Water Utilities proofs this, although there are a number of reported cases where pipelines failed due short of the expected operational lifespan. Funding of new water projects in the near future will have to compete with the capital that is required for the renovation, replacement and upgrade of existing infrastructure. An informed status of a pipeline can only be made if the operational performance history of the pipeline is known. Optimal capital expenditure and operational cost is based on the performance and the expected hydraulic performance decay rate of pipeline systems. Long term performance data is essential for this assessment and an effort should now be made to gather information on regular bases for a number of different pipelines in South Africa. This project highlighted the general lack of hydraulic performance history and hence little information is available to be considered for the hydraulic assessment and future planning of extensions or improvements to system components. Monitoring the performance of infrastructure provide knowledge to make informed decisions on the limitations and decay of the system and to optimally determine the required upgrade and extensions to the system. The expected high energy cost in South Africa highlighted the importance to re-assess the energy efficiency of pumping systems. In this regard a decision diagram has been developed to guide the decision whether to upgrade replace or rebuild section of the pipeline system. The influence of biofilm on the hydraulic capacity and the energy losses occurring at the field joints of pipelines has to be researched in more details.
Date Published:01/07/2012
Document Type:Research Report
Document Subjects:Drinking water - Water treatment
Document Keywords:Hydrology
Document Format:Report
Document File Type:pdf
Research Report Type:Standard
WRC Report No:1820/1/12
ISBN No:978-1-4312-0290-4
Authors:Van Vuuren SJ; Van Dijk M
Project Leader:van Vuuren SJ
Project No:K5/1820
Organizations:Department of Civil Engineering University of Pretoria
Document Size:31 067 KB
Attachments:Hydraulic Performance Information System Password.pdf
User Manual VB.pdf
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