Home > Civil > NESTEC 2021 Paper: Pipeline Repair Methodologies

NESTEC 2021 Paper: Pipeline Repair Methodologies

ABSTRACT

Pipelines are subjected to risks that can cause damage to them. These risks are such as internal corrosion due to corrosive fluids, erosion caused by the presence of the solid particles in the flowing fluid, external corrosion, and vandalism of pipes to the external surface of the pipe. In a case of damage and leakage in the pipeline, in addition to the large loss in the product and significant economic loss, it also causes environmental pollution. Therefore, identifying pipeline repair methods and knowing the condition in which each one is applicable is important. From the first day of using pipelines until now, many methods have been used for repairing pipeline defects. While all kinds of defects were always the same, repair methods have been continuously improving to reduce the time, cost and increasing safety and operational certainty. The impact rate of each of these varies according to the parameters such as type of damage, working environment (land and sea), working pressure and temperature, pipe length, fluid, etc. In this project the various methods of detecting pipeline defects, types of pipeline repair and required equipment have been reviewed.

Keywords: Repair, Pipeline, Corrosion, Vandalism.

Author: Amara Chinecherem Metu

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PIPELINE REPAIR METHODOLOGIES

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14 thoughts on “NESTEC 2021 Paper: Pipeline Repair Methodologies

  1. I think this is a very important research as pipelines are a very delicate piece of infrastructure in a modern economy. However, I’d like to know, what additional precautionary measures can be applied, probably during the manufacturing or installation procedures of these pipelines so as to prevent breakage from happening at all, or to extend it’s service lifetime as much as possible?

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  2. Good day Mr. Ani
    Every product produced has a time-life and must definitely expire or damage at some point. Narrowing it down to the oil and gas sector, Pipelines being very delicate have certain institutions manning the production and specification, for example DPR in t that is Department of Petroleum Resources DPR has the statutory responsibility of ensuring compliance to petroleum laws, regulations and guidelines in the Oil and Gas Industry.
    So in essence, there is a time-life for everything but proper regulations and specifications must be followed and put into considerations before using it for proper maximization. I hope I answered your question.

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  3. Yes, weather conditions could have effect the pipeline time-life, that is why the pipeline regulations for each Country could vary as they have studied and understood there climate and have laid down there rules.

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  4. Thank you , this is an educating & interesting read.
    What approaches can Nigeria use , to stop pipeline vandalism?

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  5. Yes Mr. James, Temperature affects pipeleines. Freezing weather threatens the integrity of gas pipelines every year. Monitoring and mitigation activities can help reduce the damages.

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  6. That’s a wonderful work, Amara Metu. After reading your article I found it very interesting. It’s well known that Pipeline gets self-destroyed due to the nature of materials they are made of. Don’t you consider an alternative material that will survive these pipeline threats at reasonable cost, as an innovation in material engineering discipline?

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  7. Thank you so much Mr. James.
    There is a popular saying that to get ahead keep researching, a new development has it that polyethylene pipes can be used for oil pipelining, this was not initially so as pipes made from thermoplastics had a relatively low bearing capacity and, as a result, low working pressure of the transported medium (not more than 1.0 MPa). But with much research work in materials and metallurgy, we have fiberglass pipes which are manufactured and can take up to 30Mpa and it keeps getting better by the days with more work. I hope I did answer your question.

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  8. Hot tapping is an alternative technique that allows the connection to be made without shutting down the system and venting gas to the atmosphere. Hot tapping is also referred to as line tapping, pressure tapping, pressure cutting, and side cutting.

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