In this study, impact test was carried out to assess the condition of prestressed concrete cylinder pipe (PCCP). The impulse response of the test is modeled with system identification approaches. The model of the impulse response can be further used to characterize the deterioration of PCCP. This paper presents preliminary results on the comparison of different models for the response of impact...

The BOA system is a mobile pipe-external robotic crawler used to remotely strip and bag asbestos-containing lagging and insulation materials (ACLIM) from various diameter pipes in (primarily) industrial installations. Steam and process lines within the DOE weapons complex warrant the use of a remote device due to the high labor costs and high level of radioactive contamination, making manual re...

The BOA (Big-On-Asbestos) system is a mobile pipeexternal robotic crawler used to remotely strip and bag asbestos-containing lagging and insulation materials (ACLIM) from various diameter pipes in (primarily) industrial installations. Steam and process lines within the DoE (Department of Energy) weapons complex warrant the use of a remote device due to the high labor costs and high level of rad...

Liquid Natural Gas (LNG) processing facilities contain large complex networks of pipes of varying diameter and orientation intermixed with control valves, processes and sensors. Regular inspection of these pipes for corrosion, caused by impurities in the gas processing chain, is critical for safety. Popular existing non-destructive technologies that used for corrosion inspection in LNG pipes in...

Machining of advanced materials, such as composite, encounters high cutting temperatures and rapid tool wear because of the abrasive nature of the reinforcement phases in the workpiece materials. Ultrahard coatings, such as chemical vapor deposition diamond, have been used for machining such advanced materials. Wear of diamond-coated tools is characterized by catastrophic coating failure, plaus...

Introduction Airborne asbestos-fiber is an important healthhazard. Asbestos abatement is a significant component of the overall cleanup costs associated with building demolition and renovation. For example, asbestos abatement efforts associated with the DoE’s national weapons’ complex clean-up efforts may amount to $300 million. Abatement costs are primarily driven by the issues related to envi...

The possible effects of pipe materials on drinking water quality have been analyzed in the distribution system of the water treatment plant of “La Concepción” in Tegucigalpa, Honduras. “La Concepción” is a surface water reservoir experiencing biogeochemical cycling of manganese. Black water problems have been reported in the distribution system since 1998. An evaluation of the potential influen...

This paper presents a numerical investigation of two horizontally mounted four-lobed swirl pipes in terms of swirl induction effectiveness into flows passing through them. The swirl flows induced by the two swirl pipes have the potential to improve the efficiency of Clean-In-Place procedures in a closed processing system by local intensification of hydrodynamic impact on the internal pipe surfa...

The cost effective maintenance of underwater pressure pipes for sewage disposal in Austria requires the detection and localization of leakages. Extrusion of wastewater in lakes can heavily influence the water and bathing quality of surrounding waters. The Distributed Temperature Sensing (DTS) technology is a widely used technique for oil and gas pipeline leakage detection. While in pipeline lea...

An ultrasonic guided wave system for pipe inspection is proposed. Using guided wave experience to date on a variety of different tubing problems, feasibility experiments have already been conducted on piping under insulation in both a laboratory and chemical processing facility field environment. Several guided wave techniques are introduced, one using a broad banded variable angle beam transdu...