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Example of new meter bypass technology under development at GTI.

​Success Stories


Clock Spring Composite Sleeves for Pipeline Repair

In 1987, Gas Research Institute (GRI) assembled a distinguished team of pipeline professionals and research organizations to direct a comprehensive program to verify the effectiveness, durability, and performance characteristics of a repair that permanently restores the serviceability of the pipe.

The decade-long testing program, which assumed worst case conditions, included extensive burst testing, stress rupture tests, field validations, cathodic shielding testing, and cathodic disbandment test. This complete, accurate, and verifiable technical evidence was submitted to the DOT, which changed their language in the year 2000 to recognize Clock Spring as a permanent repair.

Introducing renewable b​iogas into the natural gas delivery infrastructure

An initiative launched by GTI has established parameters for evaluating the suitability of biomethane products—derived from dairy waste and landfills—for safe and proper introduction into existing natural gas pipelines and to assure compatibility with existing supplies.

A GTI report titled "Guidance Document for the Introduction of Landfill-Derived Renewable Gas into Natural Gas Pipelines" provides analytical and other key information to pipeline companies and natural gas local distribution companies (LDCs) so that parameters specific to clean biomethane can be identified to support a productive discussion between these parties and the suppliers for contract development.

Before that, GTI scientists developed the first national biogas guidance document for introducing methane from dairy waste into existing pipelines. In 2009, GTI made publicly available a set of reports titled “Pipeline Quality Biomethane: North American Guidance Document for Interchangeability of Dairy Waste Derived Biomethane”.


Contact us: delivery@gastechnology.org​​