Application of Aerosol Spray for Pipeline Sealing

Under Development

Western Cooling Energy Center, University of California Davis More »

California Energy Commission

Damage Prevention and Mitigation -- Excavation Damage Prevention

The system consists of an adhesive mist which is sprayed into the pipeline or other target area. The aerosol naturally heads toward leaks where the blown air leaves the pipeline and settles, plugging the leak. This preliminary evaluation continues to develop and test sealants and sealing techniques for natural gas pipelines. Development of sealants for pipelines are challenging since they could clog valves and other mechanisms. Researchers are testing sealants for both 14-inch diameter pipes and 1.6-inch diameter gas lines.

Preliminary research suggests smaller aerosol particles might be needed than used in building envelope and duct applications. The product is estimated to be three to five years from commercialization.

Increased Safety - In a benefit analysis performed for the Energy Commission, it is estimated that if the sealant is successful and applied to 30 percent of California natural gas pipelines, aerosol pipeline sealing could save more than 100 million therms of natural gas per year from leaks, saving more than $130 million a year. The cost of sealing pipelines would be less than hand repairs that require excavation.

Greater Reliability -

Project Agreement 500-98-014, CEC annual report, 2015.