scholarly journals An Integrated Approach for Failure Analysis of Natural Gas Transmission Pipeline

CivilEng ◽  
2021 ◽  
Vol 2 (1) ◽  
pp. 87-119
Author(s):  
Sk Kafi Ahmed ◽  
Dr. Golam Kabir
Keyword(s):  
Natural Gas ◽  
Rank Order ◽  
Integrated Approach ◽  
Gas Pipeline ◽  
Analytic Hierarchy ◽  
Interpretive Structural Modeling ◽  
Natural Gas Pipeline ◽  
Natural Gas Transmission ◽  
Transmission Pipeline ◽  
Pipeline Failure

The main aim of this study is to identify the most important natural gas pipeline failure causes and interrelation analysis. In this research, the rough analytic hierarchy process (Rough-AHP) is used to identify the natural gas pipeline failure causes rank order. Then a combination of rough decision-making trial and evaluation laboratory (DEMATEL) and interpretive structural modeling (ISM) method is applied to generate the level of importance. The comparison of traditional DEMATEL and Rough-DEMATEL are also performed to establish the cause-effect interrelation diagram. Finally, the Bayesian Belief Network (BBN) is combined with Rough DEMATEL and ISM to identify the interrelation analysis among the most crucial failure causes. As a result, the energy supply company and government policymaker can take necessary safety plan and improve the operation. The main outcome of this study is to improve the security management and reduce the potential failure risks.

Optimal Operation of a Multi Source Multi Delivery Natural Gas Transmission Pipeline Network

2018 ◽  
Vol 13 (3) ◽  
Author(s):  
Dr. Adarsh Kumar Arya ◽  
Dr. Shrihari Honwad
Keyword(s):  
Natural Gas ◽  
Fuel Consumption ◽  
Optimal Operation ◽  
Gas Pipeline ◽  
Ant Colony ◽  
Generalized Gradient ◽  
Pipeline Network ◽  
Natural Gas Pipeline ◽  
Natural Gas Transmission ◽  
Transmission Pipeline

Abstract Transportation of natural gas from gathering station to consumption centers is done through complex gas pipeline network system. The huge cost involved in transporting natural gas has made pipeline optimization of increased interest in natural gas pipeline industries. In the present work a lesser known application of Ant Colony in pipeline optimization, has been implemented in a real gas pipeline network. The objective chosen is to minimize the fuel consumption in a gas pipeline network consisting of seven compressors. Pressures at forty-five nodes are chosen as the decision variables. Results of Ant Colony Optimization (ACO) have been compared with those of GAMS that utilizes ‘Generalized gradient principles’ for optimization. Our results utilizing ACO show significant improvement in fuel consumption reductions. Similar procedures can be adopted by researchers and pipeline managers to help pipeline operators in fixing up the pressures at different nodes so as the fuel consumption in compressors gets minimized.

scholarly journals Data Analysis and Model Validation of Natural Gas Transmission Pipeline With Compressor Station

2019 ◽  
Author(s):  
David Cheng
Keyword(s):  
Performance Analysis ◽  
Natural Gas ◽  
Model Validation ◽  
Measurement Data ◽  
Real Life ◽  
Gas Pipeline ◽  
Physical Parameters ◽  
Pressure Drops ◽  
Natural Gas Transmission ◽  
Transmission Pipeline

Abstract Data from the DCS systems provides important information about the performance and transportation efficiency of a gas pipeline with compressor stations. The pipeline performance data provides correction factors for compressors as part of the operation optimization of natural gas transmission pipelines. This paper presents methods, procedure, and a real life example of model validation based performance analysis of gas pipeline. Statistic methods are demonstrated with real gas pipeline measurement data. The methods offer practical ways to validate the pipeline hydraulics model using the DCS data. The validated models are then used as performance analysis tools in evaluating the fundamental physical parameters and assessing the pipeline hydraulics conditions for potential issues influencing pressure drops in the pipeline such as corrosion (ID change), roughness changes, or BSW deposition.

Data Analysis and Model Validation of Natural Gas Transmission Pipeline With Compressor Station

2019 ◽  
Vol 4 (3) ◽  
Author(s):  
David Cheng
Keyword(s):  
Performance Analysis ◽  
Natural Gas ◽  
Model Validation ◽  
Measurement Data ◽  
Gas Pipeline ◽  
Pipeline System ◽  
Actual System ◽  
Natural Gas Transmission ◽  
Transmission Pipeline ◽  
Performance Analysis Tools

Abstract Data from the distributed control system (DCS) or supervisory control and data acquisition (SCADA) system provide useful information critical to the evaluation of the performance and transportation efficiency of a gas pipeline system with compressor stations. The pipeline performance data provide correction factors for compressors as part of the operation optimization of natural gas transmission pipelines. This paper presents methods, procedures, and an example of model validation-based performance analysis of a gas pipeline based on actual system operational data. An analysis approach based on statistical methods is demonstrated with actual DCS gas pipeline measurement data. These methods offer practical ways to validate the pipeline hydraulics model using the DCS data. The validated models are then used as performance analysis tools in assessing the pipeline hydraulics parameters that influence the pressure drop in the pipeline such as corrosion (inside diameter change), roughness changes, or basic sediment and water deposition.

scholarly journals Design and Application of a Natural Gas Pipeline Optimization Program

1987 ◽  
Author(s):  
Jill Gilmour
Keyword(s):  
Natural Gas ◽  
Gas Turbine ◽  
Fuel Consumption ◽  
Gas Pipeline ◽  
Pipeline System ◽  
Total System ◽  
Optimization Program ◽  
Natural Gas Pipeline ◽  
Simulation Techniques ◽  
Transmission Pipeline

A software package which optimizes natural gas pipeline operation for minimum fuel consumption is in use on a commercial transmission pipeline. This Optimization Program has resulted in pipeline fuel savings in daily pipeline operation. In addition, the effect of a new compressor/turbine unit on the pipeline system as a whole can be accurately and easily quantified through use of the Optimization Program before the unit is even installed. The results from one turbine replacement study showed the total system fuel consumption and operating hours predicted for each unit were not directly related to a high turbine efficiency. This paper describes the simulation techniques used for the gas turbine and compressor modeling. The methodology behind the system-wide optimization is also provided, along with a detailed discussion of the program application to gas turbine and compressor replacement studies.

scholarly journals Numerical Simulation of Natural Gas Pipeline Transients

2019 ◽  
Vol 141 (10) ◽  
Author(s):  
Abdoalmonaim S. M. Alghlam ◽  
Vladimir D. Stevanovic ◽  
Elmukhtar A. Elgazdori ◽  
Milos Banjac
Keyword(s):  
Natural Gas ◽  
Gas Flow ◽  
Computer Code ◽  
Gas Pipeline ◽  
Operating Conditions ◽  
Transient Effects ◽  
Natural Gas Pipeline ◽  
Transmission Pipeline ◽  
Variable Consumption ◽  
Isothermal Gas

Simulations of natural gas pipeline transients provide an insight into a pipeline capacity to deliver gas to consumers or to accumulate gas from source wells during various abnormal conditions and under variable consumption rates. This information is used for the control of gas pressure and for planning repairs in a timely manner. Therefore, a numerical model and a computer code have been developed for the simulation of natural gas transients in pipelines. The developed approach is validated by simulations of test cases from the open literature. Detailed analyses of both slow and fast gas flow transients are presented. Afterward, the code is applied to the simulation of transients in a long natural gas transmission pipeline. The simulated scenarios cover common operating conditions and abrupt disturbances. The simulations of the abnormal conditions show a significant accumulation capacity and inertia of the gas within the pipeline, which enables gas packing and consumers supply during the day time period. Since the numerical results are obtained under isothermal gas transient conditions, an analytical method for the evaluation of the difference between isothermal and nonisothermal predictions is derived. It is concluded that the nonisothermal transient effects can be neglected in engineering predictions of natural gas packing in long pipelines during several hours. The prescribed isothermal temperature should be a few degrees higher than the soil temperature due to the heat generation by friction on the pipelines wall and heat transfer from the gas to the surrounding soil.

Failure Investigation of a Natural Gas Transmission Pipeline

2012 ◽  
Author(s):  
Vinod Chauhan ◽  
Ian Fordyce ◽  
James Gilliver ◽  
Sudhakar Peravali ◽  
Andrew Connell ◽  
...  
Keyword(s):  
Natural Gas ◽  
Materials Testing ◽  
Pipe Material ◽  
Gas Field ◽  
Natural Gas Pipeline ◽  
Failure Investigation ◽  
Diameter Pipe ◽  
Natural Gas Transmission ◽  
Transmission Pipeline ◽  
Bending Stresses

PT Transportasi Gas Indonesia (TGI) own and operate a 536 km long natural gas pipeline in South Sumatra, Indonesia which transports natural gas from ConocoPhillips’s gas field in Grissik, South Sumatra to Chevron Pacific Indonesia’s station facilities in Duri. On 29th September 2010, an event occurred that resulted in a release of gas from the pipeline. In response to the emergency, the affected section of the pipeline was isolated by closing block valves upstream and downstream of the leak. The incident was brought under control by TGI on the same day and there were no reported injuries or fatalities. Failure was located in a girth weld on a 28 inch diameter pipe section, which had spread into the adjacent pipe material. Subsequently a failure investigation was requested by TGI. The investigation included a fracture examination and materials testing of the failed girth weld and parent pipe; a geotechnical investigation; and an engineering critical analysis (ECA) of the failure. This paper describes the multidisciplinary works undertaken to investigate the cause of the incident. The primary observation of this failure investigation is that no single factor contributed to the failure that occurred. The pipeline at the rupture location had been subjected to high bending stresses when the pipeline was laid and the stresses were exacerbated following consolidation and creep settlement of the underlying swamp material. The field joint coating had been compromised, leading to the formation of near neutral stress corrosion cracking (SCC). Initial cracking from the SCC had then extended to the point where the remaining ligament then failed by plastic collapse. It was judged that the settlement may also have been enhanced by a recent earthquake.

scholarly journals Comparative Analysis of Natural Gas Pipeline Interconnections

2021 ◽  
Vol 343 ◽  
pp. 09005
Author(s):  
Ion Foidaş ◽  
Florin Marius Bîrsan
Keyword(s):  
Comparative Analysis ◽  
Natural Gas ◽  
Transmission System ◽  
Gas Pipeline ◽  
The Other ◽  
Advantages And Disadvantages ◽  
Natural Gas Pipeline ◽  
Natural Gas Transmission ◽  
Special Working ◽  
Transmission Pipelines

The paper shows a comparison between two intervention methods for interconnecting two gas transmission pipelines within a natural gas transmission system. One intervention implies shutdown of pipelines, while the other one in-service pipelines. Each method is described in detail along with the main technological issues, as well as the related advantages and disadvantages. The technological procedures imply special working techniques such as welding or hot tapping in service pipelines.

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