Hydrogen – NTT will study the transport of hydrogen through existing pipelines

The research project is expected to contribute to the realization of a pipeline transport model for hydrogen that could be implemented on a global scale.

According to an article published by the International Renewable Energy Agency, “Hydrogen has become an important part of the clean energy mix needed to ensure a sustainable future”. However, the large-scale and stable transport of hydrogen through new pipeline infrastructure is fraught with issues such as land acquisition construction costs and construction time. Using existing pipeline infrastructure can address these issues, and this new study represents the next step in the proof-of-concept process for this model.

The study will focus on a dual-pipe system in which a hydrogen pipe is placed in an existing pipe (the “sheathed pipe”) buried underground. Factors to measure and contribute to the formulation of technical standards include:

Hydrogen Leak Detection Site Survey

Verification of the detection of signs of anomaly

Implementation of a control sequence to ensure safety

Performance evaluation of various hydrogen sensors in a real environment

Safety measures will be studied in the event of unstable conditions, including rupture accidents and natural disasters during the operation of the pipeline. In addition to examining the safety measures necessary for such use of existing pipelines, the study will verify the profitability of such projects, including the analysis of transportation costs; energy input; and economic efficiency, compared to other means of transporting hydrogen.

Based on the knowledge and data gained from this project, NTT Anode Energy and its collaborators will promote and establish technical studies on safety measures for practical use. Ultimately, the project will also support the future supply of hydrogen to urban areas (e.g. public and commercial facilities, data centers and communication buildings; fuel cell vehicles; hydrogen stations , etc.), supply through pipelines using communication pipelines (eg cable tunnels) and will contribute to the development of smart cities and the establishment of means of hydrogen supply through pipelines in the territories in view of a society that consumes a lot of hydrogen through the development of CO2-free hydrogen.

This project is carried out in accordance with the axis “Research and development for the large-scale popularization of ultra-high pressure hydrogen infrastructure/Research and development for international development, international standardization, etc./Research and study for the review of technical standards for hydrogen supply infrastructure, etc.” of the Organization for the Development of New Energies and Industrial Technologies.

Main areas of research by collaborator

NTT anode energy

Hydrogen leak detection;

Detection of abnormal signs;

Hydrogen sensor survey;

Investigation of the residual hydrogen concentration at the time of the hydrogen leak; and

Investigating the effect of a manhole cover explosion


Study of the behavior of fire flames caused by the ignition of a hydrogen leak in a simulated double pipe system

Toyota Tsuho

Clarification of unit costs by checking equipment, installation and security costs; and

Verification of advantageous conditions and business establishment requirements of pipeline transportation

For more information :

NTT Anode Energy Corporation

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