scholarly journals Design and demonstration of an analysis Information system for magnetic flux leakage inspection of natural gas pipeline. Final letter report

1996 ◽  
Author(s):  
G.J. Schuster ◽  
B.A. Saffell
Keyword(s):  
Information System ◽  
Natural Gas ◽  
Magnetic Flux ◽  
Gas Pipeline ◽  
Magnetic Flux Leakage ◽  
Natural Gas Pipeline ◽  
Flux Leakage ◽  
Final Letter

Detection of natural gas pipeline defects using magnetic flux leakage measurements

2013 ◽  
Author(s):  
Mojtaba Rostami Kandroodi ◽  
Babak Nadjar Araabi ◽  
Majid Nili Ahmadabadi ◽  
Farshad Shirani ◽  
Maisam Mansoob Bassiri
Keyword(s):  
Natural Gas ◽  
Magnetic Flux ◽  
Gas Pipeline ◽  
Magnetic Flux Leakage ◽  
Natural Gas Pipeline ◽  
Flux Leakage

Achieving North American Record for Longest Intelligent Inspection of a Natural Gas Pipeline

2018 ◽  
Author(s):  
Sheshi Epur ◽  
Aaron Schartner ◽  
Frank Sander
Keyword(s):  
Natural Gas ◽  
High Speed ◽  
Gas Pipeline ◽  
Main Program ◽  
Project Schedule ◽  
Significant Challenge ◽  
Natural Gas Pipeline ◽  
Mission Critical ◽  
First Time ◽  
Flux Leakage

TransCanada was faced with a significant challenge to inspect a 941 km NPS 48 pipeline. The options for the inline inspection (ILI) were multiple segments which would cause an increased cost with new pigging facilities required and a delay to the ILI schedule or attempt to pig the longest natural gas pipeline section in North America. The extraordinary proposal would require a massive 48″ combination Magnetic Flux Leakage (MFL) tool to traverse a high-speed gas pipeline 941km from Burstall, Saskatchewan to Ile des Chenes, Manitoba, Canada. Given the alternative of the installation of 3 additional launcher and receiver stations and the risk to overall project schedule from extended inspection operations, TransCanada took the bold decision to perform an MFL inspection in a single pass. However, as expected, this option created a new set of challenges to guarantee first run success in one of the harshest environments for an ILI tool and in a line where the cleanliness condition was unknown. This last factor, was a critical concern as the volumes of debris that could be collected with the highly aggressive MFL tool brushes, could easily and very quickly have led to very significant debris build up during inspection that at best would likely cause degraded data leading to an unwanted re-run and at worst the possibility of a stuck pig and subsequent retrieval program. From a project perspective either occurance was considered to be mission critical — if either occurred there was no easy solution to collecting the much needed condition data of the pipeline. In July 2017, a successful VECTRA HD GEMINI inspection was completed. This paper discusses the main program risks, mitigation steps taken over and above a standard ILI run. Key considerations and actions taken relating to additional engineering and tool modifications to various components of the inspection vehicle itself will be discussed. Lastly, insight will be given into an extensive smart cleaning program developed with the ILI vendor, using a combination of mechanical cleaning associated and debris level assessment, specifically designed and tailored for the project to ensure that the pipeline was both ready for ILI and that cleaning had reached optimum for ILI so that full, high quality MFL data would be collected the first time.

ANSYS Simulation Technology of Pipeline Magnetic Flux Leakage Inspection

2013 ◽  
Vol 718-720 ◽  
pp. 1000-1005
Author(s):  
Li Jian Yang ◽  
Sen Lin Zhang ◽  
Song Wei Gao
Keyword(s):  
Magnetic Field ◽  
Finite Element ◽  
Electromagnetic Field ◽  
Magnetic Flux ◽  
Oil And Gas ◽  
Gas Pipeline ◽  
Magnetic Flux Leakage ◽  
Field Calculation ◽  
Inspection Method ◽  
Flux Leakage

In order to solve the need of the oil and gas pipeline defect quantification in the real-time online defecting, magnetic flux leakage inspection method was applied to oil and gas pipeline inspection. According to the basic theory of the electromagnetic field, finite element solution of electromagnetic field and ANSYS electromagnetic field calculation theory, using the function of ANSYS 's simulation and calculation for magnetic field, three-dimensional finite element model of the oil and gas pipeline defect was built up. Through simulating, the relationship between defect signal and defect size was found, the optimal distance of the hall sensor lift-off value was verified, the best magnetization of leakage magnetic field was discussed, and various factors to influence the magnetic flux leakage signal is analyzed.

Directional Caliper Tool Development

2018 ◽  
Author(s):  
Dylan Davis ◽  
Robert Zazuliak ◽  
Stephen Westwood
Keyword(s):  
North America ◽  
Natural Gas ◽  
Magnetic Flux ◽  
Magnetic Flux Leakage ◽  
Tool Development ◽  
Baseline Assessment ◽  
Natural Gas Pipelines ◽  
Assessment Program ◽  
Technical Features ◽  
Flux Leakage

TransCanada owns and operates more than 91,500km of natural gas pipelines in North America and since 2014 they’ve been aggressively pursuing the assessment of the unpigged portion of their system. To expand the In-Line Inspection coverage in the system TransCanada identified the need to develop a bi-directional caliper tool. This development allowed TransCanada to attain both Magnetic Flux Leakage and Caliper data while reducing the overall cost of its multi-year baseline assessment program. This paper will discuss the technical features of the bi-directional caliper tool and an overview of the model used by TransCanada which drove the development of the bi-directional caliper technology and to demonstrate the advantages of utilizing unconventional In Line Inspection technology in order to obtain MFL and Caliper data.

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