Trenchless Technology

OCT 2018

Trenchless Technology is the premier communications vehicle for the trenchless industry. Through our multiple platforms, readers receive insights into the trenchless industry, as well as keep connected to the latest news, products and projects.

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Page 43 of 91

ways in which the asset might fail . For example, a pipe system could be divided into pipe segments. The performance parameters for each pipe segment might include structural condition, maintenance condition, material type and hydraulic capacity. These parameters can be weighted based on the input , and the probability of failure factors can be assigned a scoring scale of 1 to 5. CONSEQUENCE OF FAILURE (CoF) ANALYSIS The consequence of failure expresses the implications of an asset failure. It 's important to consider all possible impacts. Costs obviously include the inancial expense of direct repair and collateral damage, but they also include social , environmental and legal costs. Taking underground pipes for example, costs beyond immediate repair include: 44 T R E N C H L E S S T EC H N O LO GY O C TO B E R 2018 (Sample mitigation approaches based on risk, figure from "Practical Condition Assessment and Failure Probability Analysis of Small Diameter Ductile Iron Pipe," Water Research Foundation Project 4661, 2018)

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