scholarly journals Failure analysis of gas pipeline in a gas collecting station

2021 ◽  
Author(s):  
Yong Chen ◽  
Haochen Wu ◽  
Jichuan Li ◽  
Yanjun Chen
Keyword(s):  
Failure Analysis ◽  
Gas Pipeline

Failure analysis of a natural gas pipeline subjected to landslide

2021 ◽  
Vol 119 ◽  
pp. 105009
Author(s):  
Akbar Vasseghi ◽  
Ebrahim Haghshenas ◽  
Aram Soroushian ◽  
Masoumeh Rakhshandeh
Keyword(s):  
Natural Gas ◽  
Failure Analysis ◽  
Gas Pipeline ◽  
Natural Gas Pipeline

Gas Pipeline Failure Caused by In-Service Welding

2015 ◽  
Vol 138 (1) ◽  
Author(s):  
A. Farzadi
Keyword(s):  
Failure Analysis ◽  
Gas Pipeline ◽  
Operating Conditions ◽  
Pipe Material ◽  
Natural Gas Pipeline ◽  
Repair Operation ◽  
Repair Procedure ◽  
Hydrogen Assisted Cracking ◽  
Major Factors ◽  
Material Information

In the research presented in this paper, a failure analysis had been carried out to identify causes of an incident, which had taken place after an operation to repair a leak in an interstate natural gas pipeline. In this operation, a partial encirclement reinforcement (patch) was welded to the carrier pipe according to an available hot taping procedure, while gas was flowing in the pipeline. The failure analysis commenced with preliminary steps of information gathering of background data regarding the repair operation and then several samples were extracted for macroscopic and microscopic metallurgical examinations. In addition to fractographic analyses of fracture surfaces, pipe material was examined because the pipeline had been in service for prolonged period and there was not any official material information available. The analyses disclose that hydrogen-assisted cracking, wrong design of branch connection, paint coating, and pipeline operating conditions were major factors contributing to the failure. The work undertaken also included development and recommendation of a repair procedure to avoid similar failures in the future.

Failure analysis of a gas pipeline

2004 ◽  
Vol 11 (3) ◽  
pp. 387-400 ◽  
Author(s):  
C.R.F. Azevedo ◽  
A. Sinatora
Keyword(s):  
Failure Analysis ◽  
Gas Pipeline

Failure analysis of a natural gas pipeline

2018 ◽  
Vol 84 ◽  
pp. 167-184 ◽  
Author(s):  
Hadi Shabani ◽  
Narges Goudarzi ◽  
Mahdi Shabani
Keyword(s):  
Natural Gas ◽  
Failure Analysis ◽  
Gas Pipeline ◽  
Natural Gas Pipeline

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.

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