Abstract: Control valves are commonly used for the operation of water distribution systems. Modeling these devices typically requires that their operating states are known, or that a computationally expensive search is undertaken ...

Abstract: The hydraulic reliability of bulk water-supply systems can be defined in terms of the failure frequency of the municipal storage tanks they supply: the system fails when the tank runs dry and is functional otherwise. ...

Abstract: Pressure pipe failure is a common problem for water utilities worldwide and can result in high costs and disruption of customers. This study analyzed the failure rates of iron, polyvinyl chloride (PVC), asbestos cement ...

Abstract: Extended-period simulation of incompressible and inertialess flow in water distribution systems is normally done using numerical integration techniques, although regression methods are also sometimes employed. A new method ...

Abstract: This note proposes a new method for snapshot analysis of water distribution systems based on the commonly used gradient method. The proposed method uses a secant (intersecting the head-loss function in two points) instead ...

Abstract: Genetic algorithm (GA) optimization is well suited for optimizing the operation of water distribution systems, especially large and complex systems. GAs have good initial convergence characteristics, but slow down considerably ...

Abstract: Municipal storage tanks are used to balance differences in supply and demand. Tanks have traditionally been sized based on deterministic criteria for balancing, fire, and emergency storage components. In this paper a ...

Abstract: Closed-circuit television (CCTV) inspections are essential in keeping sewer pipe performance at a desirable level. A sewer pipe condition score is usually assigned to each pipe based on the type, quantity, and extent of ...

Abstract: Municipal storage tanks are normally sized according to inherently conservative design guidelines. An alternative way to determine the required size of a tank, on the basis of a stochastic analysis of the system, was ...

Abstract: The COVID-19 pandemic affected the operation of water utilities across the world. In the context of utilities, new protocols were needed to ensure that employees can work safely, and that water service is not interrupted. ...