And the Kitchen Sink-Using a Full Toolbox to Assess a Critical Bulk Water Asset in South Africa

摘要

The Department of Water and Sanitation is the custodian of South Africa's water resources and is responsible for meeting the country's current and future water needs. In 2014, the Department of Water and Sanitation undertook a comprehensive inspection and subsequent risk assessment of two of their most critical pipelines. The pipelines total 90 kilometers in length and are comprised of Non-Cylinder Prestressed Concrete Pipe. The assessment included specification development, material testing, hydraulic steady-state and transient analysis, a corrosivity survey, a flown lidar survey, leak and gas pocket detection surveys, electromagnetic inspection, structural analysis, engineering assessment, and risk evaluation. As a result of the assessment, the risk of failure for each of the over 14,000 individual pipes that comprise the transmission mains was quantified and reported to DWS in a geospatial asset management platform.