The Development and Challenges of Pipeline Failure Analysis in China

2008 ◽  
Author(s):  
Xinhua Chen ◽  
Qingshan Feng ◽  
Biyuan Shui ◽  
Baoji Li ◽  
Jianbin Hao ◽  
...  
Keyword(s):  
Risk Assessment ◽  
High Pressure ◽  
Failure Analysis ◽  
Large Diameter ◽  
Gas Pipeline ◽  
Third Party ◽  
Manufacturing Defects ◽  
Standard Template ◽  
Pipeline Failure ◽  
The Relationship

According to the failure history and the results of failure analysis, the failure of oil & gas pipeline in China was mainly caused by incorrect operations, manufacturing defects, corrosion and third-party damage. Based on a case of failure analysis, such problems as how to develop a standard template of pipeline failure incident / accident report, how to set a guideline of pipeline failure analysis and further improve the failure database of pipeline were discussed. In addition, the relationship between the prediction/prevention technology and risk assessment was also analyzed. Finally, a brief description about how to carry out the research of pipeline failure prediction/prevention technology and promote its application in China, especially for large-diameter, high-pressure gas pipeline was presented.

‘We’re Still Hitting Things’: The Effectiveness of Third Party Processes for Pipeline Strike Prevention

2016 ◽  
Author(s):  
Vanessa McDermott ◽  
Jan Hayes
Keyword(s):  
High Pressure ◽  
Asset Management ◽  
Financial Risk ◽  
Structural Changes ◽  
Gas Pipeline ◽  
Third Party ◽  
Reputation Management ◽  
External Interference ◽  
Near Misses ◽  
Perceptions Of Risk

High-pressure gas pipelines are vulnerable to damage in the course of building or maintaining other infrastructure, such as roads, water pipelines, electricity or telecommunications cabling. Unlike other countries, there has never been a death or serious injury from a high-pressure gas pipeline strike in Australia and yet external interference continues to be the most common cause of pipeline damage despite a range of technical and legislative measures in place. This research project aims to enhance the safety strategies regarding third party pipeline strikes by giving the pipeline sector a greater understanding of the motivations and priorities of those who work around pipeline assets and so how to work with them to achieve better outcomes. Using data gathered from more than 70 in-depth interviews, we explore empirically alternate understandings of risk amongst a range of stakeholders and individuals that are responsible in some way for work near or around high-pressure gas transmission pipelines in Australia. Outside the pipeline sector, much of the work around pipelines is conducted by those at the bottom of long chains of contractors and sub-contractors. We discuss perceptions of risk held by a range of third party actors whose activities have the potential to threaten gas pipeline integrity. We compare these views with gas pipeline industry perceptions of risk, couched in terms of asset management, public safety, legal and insurance obligations, and reputation management. This paper focuses on how financial risk and so also management of the potential for pipeline strikes is shifted down the third party contractor chain. Added to this, incentives for timely project completion can unintentionally lead to situations where the potential for third party contractors to strike pipelines increases. The data shows that third party contractors feel the time and cost impact of design or project changes most immediately. Consequently, strikes or near misses may result as sub-contractors seek to avoid perceived ‘unnecessary’ time delays along with the associated financial impact. We argue that efforts to reduce the potential for pipeline strike need to be targeted at structural changes, rather than simply aimed at worker risk perception and enforcement of safety compliance strategies.

Risk Evaluation of Gas Pipeline Based on Rough Set

2013 ◽  
Vol 443 ◽  
pp. 258-262
Author(s):  
Hong Yan Gu
Keyword(s):  
High Pressure ◽  
Set Theory ◽  
Rough Set ◽  
Natural Environment ◽  
Risk Evaluation ◽  
Rough Set Theory ◽  
Gas Pipeline ◽  
Gas Pipelines ◽  
Pressure Medium ◽  
Pipeline Failure

Gas is a flammable, explosive and high-pressure medium. Gas pipelines are passing through many different geographical conditions of changing natural environment with gas. Therefore, a lot of adverse consequences will be bought by the gas pipeline failure, however not all consequences have a great impact on assessment of the losses. The rough set theory is used to simplify the accident loss. In this paper, the accident loss of gas pipelines of the gas enterprise in one city taken as an example is evaluated and forecasted with the rough set theory, which can bring the scientific foundation for the managers management and decision.

Evaluation of Risk Assessment Methods: South Sumatra Gas Pipeline Case Study

2002 ◽  
Author(s):  
Arie Wisianto ◽  
Satya A. Putra
Keyword(s):  
Risk Assessment ◽  
Failure Analysis ◽  
Fault Tree Analysis ◽  
Assessment Method ◽  
Assessment Methods ◽  
Gas Pipeline ◽  
The South ◽  
Maintenance Program ◽  
Risk Assessment Method ◽  
Assessment Engineering

The South Sumatra Gas Pipeline has a total length of 250 km and varies in pipe size. It delivers 250 MMSCFD gas from scattered gas fields to gas markets in Palembang, the industrial center in South Sumatra. The 16-inch Rambutan-Betung segment has ruptured three times. Based on these failures a maintenance program was conducted to avoid similar problems in other segments. These programs were accelerated inline inspection, rupture investigation using Fault Tree Analysis (FTA) method, failure analysis and evaluation of risk assessment methods. The evaluation of risk assessment methods addresses the following considerations: Is the risk assessment method that has been used applicable? Which risk assessment method is more accurate? What actions are necessary to improve risk assessment in the future? Risk assessment methods by AGA PIMAR (American Gas Association Methods for Prioritizing Pipeline Maintenance And Rehabilitation) and Kent. W Muhlbauer method were evaluated and compared. The evaluation was applied based on five conditions. These conditions are before failure/rupture, after rupture, after intelligent pigging, after failure analysis and condition before failures but having high potential land movement. The last condition was included because the failure analysis indicated that ruptured was caused by land movement (land slide). The risk assessment evaluation indicated that each of the assessment methods used was applicable and accurate for different pipeline conditions. For the South Sumatra Gas Pipeline AGA PIMAR was found to be more suitable for the segments evaluated. This evaluation concludes that there is no exact method for implementation of risk assessment; engineering judgment is required in the process.

Individual and Societal Risk Analysis of Pipeline Failures Occasioned by Third Party Using the CPQRA Method: The Case Study of the Gas Pipeline in Utekon Community in Ovia LGA of Edo State

2015 ◽  
Vol 14 ◽  
pp. 87-96 ◽  
Author(s):  
Godfrey Omonefe Ariavie ◽  
Joseph Oyetola Oyekale
Keyword(s):  
Risk Assessment ◽  
Natural Gas ◽  
Risk Analysis ◽  
Gas Pipeline ◽  
Third Party ◽  
Societal Risk ◽  
Transmission Pipeline ◽  
Edo State ◽  
The Individual ◽  
Pipeline Failures

Gas transmission pipelines mainly transport flammable fluids across the length and breadth of the country especially in the Niger Delta region of Nigeria. The associated risk to both the individuals’ encroaching and inhabiting areas along the right-of-way (ROW) and the society at large cannot be underestimated. Thus safety concerns considering the individual and societal risk of pipeline failures has become important. This paper attempts to develop a model for both individual and societal risk assessment for a 12km length natural gas transmission pipeline in Utekon community (commencing from the Benin-Auchi through Uhuwmunode Osina town and terminating in the Benin-Agbor axis) in Edo State using the Chemical Process Quantitative Risk Analysis Method (CPQRA). The CPQRA is used because it examines the hazard zones within a pipeline ROW and the number of persons that would be affected by fire/explosion. Finally, field data was used in this study to validate the model which can be applied to any natural gas pipeline risk assessment scenario.

The Role of Methane Hydrates in the Failure of a Gas Pipeline

2013 ◽  
Vol 577-578 ◽  
pp. 377-380 ◽  
Author(s):  
Francesco Caputo ◽  
F. Cascetta ◽  
Giuseppe Lamanna ◽  
G. Rotondo ◽  
Alessandro Soprano
Keyword(s):  
High Pressure ◽  
Gas Hydrates ◽  
Methane Hydrate ◽  
Back Pressure ◽  
Differential Pressure ◽  
Gas Pipeline ◽  
Moving Mass ◽  
Line Section ◽  
Pipeline Failure

Gas hydrates are known to form plugs in pipelines. Gas hydrates are crystalline compounds that form when hydrocarbons such as methane come in contact with water under thermodynamical opportune conditions, as high pressure and low temperature. Hydrates, like any obstruction in a pipeline, reduce flow, increase back pressure in the system and increase the differential pressure across the obstruction. When the line section is obstructed by a plug, the differential pressure can put the hydrate in movement and quickly accelerate it up to a speed approaching that of sound; in this case, the moving mass can cause serious mechanical damages at downstream locations where the plug can also meet restrictions or obstacles such as valves, elbows or tees. In this paper a real case of a gas pipeline failure, due to the presence of a moving mass of methane hydrate, has been investigated by considering an analytical and numerical modeling of the motion of the hydrates, as well as of their impact against the pipes.

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