The ability to detect early signs of failure in buried pipe infrastructure is necessary facilitate the continued use ageing for delivery society’s essential services and move beyond disruptive expensive reactive maintenance repair. This paper reports detailed experiments on in-pipe ultrasound techniques assessment ground conditions around plastic pipes. Two sets ultrasonic experiment soil are p...

When evaluating single walled pipe vs. double walled pipe systems, one must consider two important types of failures: 'functional failure' and 'containment failure'. A functional failure is defined as pipeline system damage without loss of product containment integrity to the environment. A containment failure is defined as pipeline system damage with loss of product containment integrity, that...

Abstract Pipe failure prediction models are essential for informing proactive management decisions. This study aims to establish a reliable model returning the probability of pipe using gradient boosted tree model, and specific segmentation grouping pipes on 1 km grid that associates localised characteristics. The is applied an extensive UK network with approximately 40,000 pipeline 14-year his...

Structures dynamic characteristics and their responses can change due to variations in system parameters. With modal of the structures, be identified. Mode shape remains vital analysis structures. It utilized failure analysis, interaction between structures supports circumvent abrupt failure. Conversely, unlike empty pipes, mode shapes for pipes conveying fluid are tough obtain intricacy eigenv...

Walker-Smith, J. A., and Blomfield, J. (1973). Archives of Disease in Childhood, 48, 476. Wilson's disease or chronic copper poisoning? The case history is given of a child who presented at 14 months with ascites and was found to have severe micronodular cirrhosis with biochemical evidence of Wilson's disease, but in view of the severity of the pathology and early age of presentation, the possi...

High-density polyethylene pipes (HDPE), crossbonded polyethylene pipes (PEX) and polyvinyl chloride (PVC) pipes for drinking water were tested with respect to migration of volatile organic components (VOC) to water. The odour of water in contact with plastic pipes was assessed according to the quantitative threshold odour number (TON) concept. A major migrating component from HDPE pipes was 2,4...

In this study a polypropylene material with talcum reinforcement used for sewer pipes has been subjected to an annealing procedure at 80°C, roughly 60°C above the actual application temperature, in air for a time period of 18 months. As expected, examination of the material showed no significant decrease in mechanical or fracture mechanical properties due to the temperature exposure. However, s...

Water is the most essential component for sustaining lives of humans and other living creatures. Supplying potable water with adequate residual pressure is a fundamental responsibility of city administration, which they do during normal conditions. But sometimes, abnormal conditions are formed resulting pressure deficient conditions during the daily operations of water distribution networks. Th...

Water utilities often rely on water main failure prediction model for developing preventive or proactive repair and replacement action program. Due to inherent uncertainties in modeling, it is challenging to understand the water main failure processes and to predict the failure effectively. In this study, Bayesian model averaging (BMA) method is presented to identify the influential covariates ...