Results 261 to 270 of about 1,378,667 (312)

Research on underground pipeline spatial positioning method based on multi-offset ground penetrating radar

Measurement science and technology
Accurate prediction of the spatial location of underground pipelines is crucial to ensure the safe operation of pipelines. However, the traditional ground penetrating radar (GPR) relies too much on the image data quality and the detection personnel’s ...
Gui-Xin Zhang, Fan Cui, Xiaoling Zhang, Qi Cheng, Ran Wang, Mengli Zhang   +5 more
semanticscholar   +1 more source

Microscopic Study on the Corrosion of Underground Pipeline

Key Engineering Materials, 2016
Corrosion on the water pipelines can potentially cause substantial human and economic losses. This paper concentrates on corrosion observation on the underground pipeline material as a part of our continuous study regarding this work. The samples which is mild steel taken from actually used pipeline at the site.
Mohamad Najmi Masri, Mohamad Fikri Samsudin, Muhammad Azwadi Sulaiman, Mazlan Mohamed, Mohamad Faiz Mohd Amin, Mohd Hazim Mohamad Amini, Mohammad Khairul Azhar Abdul Razab, Nor Hakimin Abdullah, Mohamad Bashree Abu Bakar, Muhammad Iqbal Ahmad, Nik Alnur Auli Nik Yusuf   +10 more
openaire   +1 more source

Corrosion and Protection of Underground Pipelines

ICPTT 2012, 2012
With China's rapid development of the petrochemical industry and an improvement in city utilities (water, gas, and sewer services), underground pipelines are literally the "lifeline of city." However, corrosion can cause perforations that will eventually lead to leakage accidents creating an Underground Pipeline Hazard or “time bomb" when gas ...
openaire   +1 more source

Reliability of Underground Pipelines Subject to Corrosion

Journal of Transportation Engineering, 1994
The present paper is concerned with estimating the reliability of underground pipelines subject to externally applied loading and to corrosion, either externally or internally, or both. This affects the strength of the pipeline in resisting the applied loads so that the reliability would be expected to decrease with time.
M. Ahammed, R. E. Melchers
openaire   +1 more source

Lateral response of underground pipelines to earthquakes

Computers & Structures, 1994
The effects that different supporting conditions have on the lateral response of underground pipeline structures to earthquakes are examined. Important factors that contribute to the response are identified and the relative importance of their effects is assessed.
G.D. Hahn, S. Sritharan
openaire   +1 more source

Stabilization of the position of an underground pipeline in permafrost

Soil Mechanics and Foundation Engineering, 2011
A comparative analysis is made of technical solutions pertaining to stabilization of the design position of underground pipelines with the product being transported at a positive temperature in regions of permafrost propagation. A new scheme developed by the JSC Fundamentproekt for stabilization of the position of a pipeline, which permits its uniform ...
N. B. Kutvitskaya, O. V. Gorbunova, V. D. Kaurkin, A. V. Ryazanov   +3 more
openaire   +1 more source

Calculation of the reliability of steel underground pipelines

Strength of Materials, 2009
We present basic principles of reliability calculations for steel underground pipelines resting on stochastic elastic foundation that based on the strength and stiffness criteria using the absolute maxima of arbitrary functions. Specific numerical examples illustrating a general calculation procedure are presented.
S. F. Pichugin, A. V. Makhin’ko
openaire   +1 more source

A CAST-based causal analysis of the catastrophic underground pipeline gas explosion in Taiwan

, 2020
A deep and thorough analysis of typical accidents beyond immediate failures from a systematic perspective is necessary for safety decision-making in an area.
Feng Li, Wenhe Wang, Jiang Xu, S. Dubljevic, F. Khan, Jun Yi   +5 more
semanticscholar   +1 more source

Unsteady heat losses of underground pipelines

Journal of Engineering Physics, 1977
Analytic expressions are presented for the unsteady temperature distribution of the ground and heat losses of an underground pipeline for an arbitrary variation of the temperature of the medium being transferred and boundary conditions of the third kind at the pipe wall and the surface of the ground.
B. L. Krivoshein, V. M. Agapkin
openaire   +1 more source

Comprehensive framework for underground pipeline management with reliability and cost factors using Monte Carlo simulation

, 2020
A reliability model for underground pipeline management that can quantify the trade-off between risk reduction and increased maintenance costs in various underground piping management scenarios can be useful for many pipeline-maintenance decision-makers.
Keonhee Park, Gun-Hak Lee, Changsoo Kim, Jinjun Kim, K. Rhie, W. Lee   +5 more
semanticscholar   +1 more source