4S Ledningsnät

On behalf of 4S, four water and wastewater companies—Stockholm Vatten och Avfall, Norrvatten, Kretslopp och Vatten, and NSVA—have begun a long-term effort to create an industry template for water and wastewater companies based on each company’s own supplementary AMA specifications. Why should water and wastewater companies keep reinventing the wheel when, together, we can establish […]

Leaks in main water lines are one of the most critical challenges facing today’s water utility operators—with significant consequences for operations, costs, and resource losses. At the same time, locating leaks in large pipes using existing methods is both technically challenging and often associated with high costs. To meet this challenge, 4S Ledningsnät is now […]

A presentation of a study that will answer the question: How strong are PE welds? The focus is on a new method that makes it possible to evaluate both electrofusion and butt welds using measured values. The fracture energy values for both types of welds are compared with the pipe’s properties. This method differs from […]