• Title/Summary/Keyword: pipeline system

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Development of Assessment System for Pipeline Integrity (매설배관의 건전성 평가 시스템 개발)

  • 이억섭;윤해룡
    • Journal of the Korean Society for Precision Engineering
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    • v.20 no.8
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    • pp.158-165
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    • 2003
  • The object of this work is to develop an assessment system for pipeline integrity. The internal algorithm and the database of the system are described in this paper. The system consists of four module applications; the effect of corrosion in pipeline, crack, SCC (stress corrosion cracking) and fatigue module. The database of the system is separated to mainly four parts; geometry of pipeline, material properties, boundary condition and general properties. This system may give a guideline for maintenance and modifications.

Development of Integrity Assessment System for the Pipeline (파이프라인의 건전성 평가 시스템 개발)

  • Lee, Eok-Seop;Hwang, In-Hyeon
    • Journal of the Korean Society for Precision Engineering
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    • v.17 no.12
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    • pp.157-162
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    • 2000
  • The object of this work is to develop an assessment system for pipeline integrity. the system consists of four module applications for internal algorithm; the effect of corrosion in pipeline, crack, stress corrosion crack (SCC) and fatigue modules. Presently, the module of the external corrosion has been developed and the internal algorithm for the effect of corrosion in pipeline and the database of the system are described in this paper. The database of the system is separated to mainly four parts; geometry of pipeline, material properties, boundary conditions and general properties. Each components of the system are designed by user-friendly concept. This system may give a guideline for maintenance and modifications for the pipeline at the industrial sight. Furthermore, a procedure to evaluate an inspection interval is also provided.

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The intergrity assessment of buried pipeline (매설배관의 건전성 평가)

  • Lee, Ouk-Sub;Yin, Hai-Long
    • Proceedings of the KSME Conference
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    • 2001.06a
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    • pp.333-338
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    • 2001
  • The object of this work is to develop an assessment system for pipeline integrity. The system consists of four module applications for internal algorithm; the effect of corrosion in pipeline, crack, stress corrosion crack (SCC) and fatigue modules and the effect of cavity. Presently, the module of the external corrosion has been developed and the internal algorithm for the effect of corrosion in pipeline and the database of the system are described in this paper. The database of the system is separated to mainly four parts; geometry of pipeline, material properties, boundary conditions and general properties. Each components of the system are designed by user-friendly concept. This system may give a guideline for maintenance and modifications for the pipeline at the industrial sight. Furthermore, a procedure to evaluate an inspection interval is also provided.

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Stress Monitoring System for Buried Gas Pipeline in Poor Ground (연약지반 배관응력 모니터링 시스템 개발 및 적용)

  • Hong, Seong-Kyeong;Kim, Joon-Ho;Jeong, Sek-Young
    • Journal of the Korean Society of Safety
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    • v.21 no.1 s.73
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    • pp.41-47
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    • 2006
  • This paper introduces stress monitoring system for buried gas pipeline in poor ground. During the six months of improvement construction of poor ground, maximum settlement of gas pipeline is about 40 cm. This value represents relative small compared to the initial settlement estimation of ground improvement construction plan, 90 cm. Also, this paper includes the result of finite element analysis of gas pipeline to confirm safety of pipelines in poor ground. The stress monitoring system for gas pipeline was developed to guarantee the safety of buried gas pipeline in poor ground. Eventually, the ground improvement workings are ended safely and it is proved that the pipeline has no safety problem.

The integrity assessment of the pipeline (파이프라인의 건전성 평가)

  • 이억섭;황인현
    • Proceedings of the Korean Institute of Industrial Safety Conference
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    • 2000.06a
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    • pp.25-30
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    • 2000
  • The object of this work is to develop an assessment system for pipeline integrity The system consists of four module applications for internal algorithm; the effect of corrosion in pipeline, crack, stress corrosion crack (SCC) and fatigue modules. Presently, the module of the external corrosion has been developed and the internal algorithm for the effect of corrosion in pipeline and the database of the system are described in this paper, The database of the system is separated to mainly four parts; geometry of pipeline, material properties, boundary conditions and general Properties. Each components of the system are designed by user-friendly concept. This system may give a guideline for maintenance and modifications for the pipeline at the industrial sight. Furthermore, a procedure to evaluate an inspection interval is also provided.

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Stability of Compression System with Pipeline Dynamics Model upon Pipeline Length Variation (관로 유동 모델의 관로 길이 변화에 따른 압축 시스템의 안정성)

  • Yi, Sangmin
    • Plant Journal
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    • v.12 no.4
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    • pp.44-50
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    • 2016
  • To model the compression system with more integrity, the pipeline dynamic model was applied to the compression system model. To combine the pipeline dynamic model and the compression system model, appropriate boundary conditions were selected on each end of connecting pipe with compressor, plenum and throttle valve. Simulation result illustrate the effect of pipeline dynamic model on the stability of compression system.

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Virtual reality application on MFL gas pipeline inspection system

  • Kim, Jae-Joon
    • Journal of Korea Society of Industrial Information Systems
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    • v.15 no.4
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    • pp.47-52
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    • 2010
  • This paper describes a visualization technique that animates geometrical defect data that are extracted using a magnetic flux leakage (MFL) operating system on nondestructive evaluation (NDE). Since data are collected from different locations and often not regular, the data must be converted to the standard format that is used within the pipeline in visualization procedures. In order to navigate inside of the pipeline, 3D virtual objects are generated and are able to explore the pipeline continuously. The major objectives of this paper are to characterize, generate general shape of defects, and enable computer interaction in virtual environment. Pipeline navigation system (PNS) has introduced the framework for interactive visual applications based upon the principles of modeling 3D objects. PNS presents some preliminary efforts to enable the user to interact human and computer with each other.

Design of a GIS-based Smart Pipeline Information Management System Combining DGPS RTK and Surround View (DGPS RTK와 서라운드 영상을 융합한 GIS 기반 스마트 관로정보 관리시스템 설계)

  • Joongjin Kook
    • Journal of the Semiconductor & Display Technology
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    • v.22 no.3
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    • pp.125-129
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    • 2023
  • In this paper, we propose a method to design and implement a smart pipeline information management system that can provide visualization information linked to GIS and roadmap based on the construction of precise pipeline buried information. The smart pipeline information management system consists of a positioning device for high-precision pipeline location measurement and surround view image data recording, a database for data storage and management, and a mobile app for remote monitoring and management. It connects surrounding image data and location data with GIS and roadmap. Convenience and accessibility of management can be improved.

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ARTIFICIAL NEURAL NETWORK FOR PREDICTION OF WATER QUALITY IN PIPELINE SYSTEMS

  • Kim, Ju-Hwan;Yoon, Jae-Heung
    • Water Engineering Research
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    • v.4 no.2
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    • pp.59-68
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    • 2003
  • The applicabilities and validities of two methodologies fur the prediction of THM (trihalomethane) formation in a water pipeline system were proposed and discussed. One is the multiple regression technique and the other is an artificial neural network technique. There are many factors which influence water quality, especially THMs formations in water pipeline systems. In this study, the prediction models of THM formation in water pipeline systems are developed based on the independent variables proposed by American Water Works Association(AWWA). Multiple linear/nonlinear regression models are estimated and three layer feed-forward artificial neural networks have been used to predict the THM formation in a water pipeline system. Input parameters of the models consist of organic compounds measured in water pipeline systems such as TOC, DOC and UV254. Also, the reaction time to each measuring site along pipeline is used as input parameter calculated by a hydraulic analysis. Using these variables as model parameters, four models are developed. And the predicted results from the four developed models are compared statistically to the measured THMs data set. It is shown that the artificial neural network approaches are much superior to the conventional regression approaches and that the developed models by neural network can be used more efficiently and reproduce more accurately the THMs formation in water pipeline systems, than the conventional regression methods proposed by AWWA.

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The Field Test of a Mitigation Method from DC Subwaysystem for Underground Pipeline

  • Bae, Jeong-Hyo;Ha, Tae-Hyun;Ha, Yoon-Cheol;Lee, Hyun-Goo;Kim, Dae-Kyeong
    • Corrosion Science and Technology
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    • v.6 no.6
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    • pp.308-310
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    • 2007
  • The owner of underground metallic structures (gas pipeline, oil pipeline, water pipeline, etc) has a burden of responsibility for the corrosion protection in order to prevent big accidents like gas explosion, soil pollution, leakage and so on. So far, Cathodic Protection(CP) technology have been implemented for protection of underground systems. The stray current from DC subway system in Korea has affected the cathodic protection (CP) design of the buried pipelines adjacent to the railroads. In this aspect, KERI has developed a various mitigation method, drainage system through steel bar under the rail, a stray current gathering mesh system, insulation method between yard and main line, distributed ICCP(Impressed Current Cathodic System), High speed response rectifier, restrictive drainage system, Boding ICCP system. We installed the mitigation system at the real field and test of its efficiency in Busan and Seoul, Korea. In this paper, the results of field test, especially, distributed ICCP are described.