Horizontal Directional Drilling is a trenchless method of installing underground pipes or cables along a controlled path, usually from surface drilling rigs. There is industry recognition that current guidance is a mixture of sources and that accepted techniques have evolved through field experience rather than engineering principles. It is difficult to demonstrate to clients that the approach meets with industry standards as there are no industry standards. As a result clients cannot assess the risk in an objective way.
Although the technique has already been in use for many years, its use is increasing, particularly in connection with offshore wind schemes for cabling on-shore.
This project would produce a CIRIA best practice document drawing together the best industry standards and practices in design and construction, identify the range of techniques available and identify the issues that are likely to arise. It would provide designers, contractors and owners with a clear understanding of the technique, its limitations, typical problems and how they might be solved for both nearshore and coastal and onshore applications.
CIRIA is seeking industry involvement and funding for this proposal.
To find out more and get involved, please contact Kieran Tully at CIRIA.