WCW24

Abstract In 2022 Pure Technologies, along with AECOM performed an electromagnetic inspection on the Branch Aquaduct 2 1650mm - 18.6 km pipeline for the City of Winnipeg. The inspection was performed via the PipeDiver platform. It was the longest PipeDiver inspection completed to date in North America. This abstract will discuss all the planning, inspection details and results of the inspection. The City of Winnipeg retained Pure Technologies, a Xylem brand (Pure Technologies), to conduct a condition assessment of the prestressed concrete cylinder pipe (PCCP) in the 1650-millimetre Branch II Aqueduct in Winnipeg, Manitoba. On September 21, 2022, Pure Technologies used its proprietary PipeDiverâ„¢ platform, a non-destructive electromagnetic inspection technology to locate and identify pipes that have broken prestressing wire wraps. The PipeDiver inspection covered a cumulative distance of 18.63 kilometres and spanned a total of 3,826 pipes from the Deacon Water Treatment Plant to the South Cell of the Wilkes Reservoir. Analysis of the data obtained during the inspection determined that 33 pipes in the 1650-millimetre Branch II Aqueduct displayed an electromagnetic anomaly consistent with prestressing wire damage, ranging from 5 to 20 broken wire wraps. Following the conclusion of the inspection, Pure Technologies performed structural evaluations on the PCCP pipes of the Branch II Aqueduct. The structural evaluations are intended to determine if the pipeline is operating under safe conditions based on design standards, as well as show the structural consequences of broken prestressing wires on a pipe. These evaluations include: - American Water Works Association C301 and C304 Design Analysis - Three-dimensional non-linear finite element analysis (FEA)