Computer modelling and numerical FEM analysis of buried preloaded (prestressed) piping of a compressor station is shortly discussed in the present paper. The aim of the preloading is to reduce the stress intensity at the critical point of the piping. The necessary preloading force was computed as a non-linear function of the effects of bearing and friction at the pipe/soil interface. The real m...

The fundamentals of Inherently Safer Design were not fully appreciated in the initial design (or re-design) in the following series of case histories. Two case histories involving the basic element of plant layout to minimize property damages and injury will be covered first. Simple physical separation could have reduced the losses. A case history that occurred in a bulk chemical terminal tank ...

Guided elastic waves in the frequency range of a few hundred kHz, generated and detected by appropriate transducer arrays, are used to monitor the structural integrity of pipes by comparing their actual state with a predefined reference state. For these purposes, theoretical, numerical, and experimental results are combined to study guided wave propagation and wave interaction with relevant def...

Abstract The occurrence of strong and abrupt rainfall, together with a wrong land use planning an uncontrolled urban development, can constitute risk for infrastructure population. water flow in the subsoil, under certain conditions, may cause underground cavities formation. This phenomena known as soil piping evolve generate surface collapse. It is clear that such densely urbanized areas repre...