Wastewater Pipe Probability and Consequence of Failure Rating Model for Decision Making
Publication: Pipelines 2023
ABSTRACT
In wastewater systems, the pipe’s probability of failure (POF) and consequence of failure (COF) must be determined as part of a risk-based decision framework. By identifying the POF and COF, decision-makers can make a more informed decision about current and future rehabilitation and replacement project planning. In this study, a new risk assessment model is developed using continuous-time Markov chain (CTMC) for computing the probability of failure and the weighted average along with the weighted rating method to find the consequences of failure. Finally, the model was applied to a northeastern Louisiana wastewater network as a case study. The results showed the POF of the pipe for the next 200 years and corrosion, soil type, and waste type are the main consequences involving more costs of failure 40% of pipes need moderate to high costs, and 7% of pipes need high costs. Unfortunately, the developed model could not be validated because of insufficient data.
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Published In
Pipelines 2023
Pages: 21 - 30
History
Published online: Aug 10, 2023
ASCE Technical Topics:
- Analysis (by type)
- Benefit cost ratios
- Business management
- Case studies
- Engineering fundamentals
- Environmental engineering
- Failure analysis
- Financial management
- Geomechanics
- Geotechnical engineering
- Infrastructure
- Mathematics
- Methodology (by type)
- Pipe failures
- Pipeline management
- Pipeline systems
- Pipes
- Practice and Profession
- Probability
- Research methods (by type)
- Soil dynamics
- Soil mechanics
- Soil-pipe interaction
- Wastewater management
- Water treatment
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