Long-term Durability Of Clock Spring Repairs Recent Removals And Examination

摘要

The U.S. DOT required that GRI conduct a field validation study to verify the laboratory findings that a Clock Spring was a permanent repair and was at least no less safe than traditional repair methods (it can be argued a Clock Spring repair maximizes worker safety, public safety and pipeline integrity due to the elimination of risks associated with heavy equipment, hot work and welding-related concerns). This field validation study considered units which had been in service for periods of 2-7 years.