Field Trial: Inspection of Cement Mortar-Lined Ductile Iron Pipe

The Region of Peel (Region) has implemented a replacement program for its ductile iron (DI) pipe 300 mm and smaller due to the high number of failures experienced with this type of pipe. As part of the replacement program, a section of the distribution system was scheduled to be abandoned in Caledon, Ontario, during the spring of 2013. The abandoned main was made of 300 mm cement mortar-lined DI pipe, Class 52. Prior to abandoning the main the Region of Peel chose to conduct field trials on a 150 m section of the water main using multiple inspection platforms and technologies being developed by Pure Technologies (Pure). The first field inspection was completed while the pipeline remained in service using the Sahara II platform, which simultaneously deploys closed-circuit television (CCTV), acoustic leak detection, and acoustic pipe wall assessment. A second inspection was conducted, after the line was taken out of service, utilizing a magnetic flux leakage (MFL) tool capable of penetrating a mortar lining. Overall, the inspections determined that the line was in great shape with only minor isolated areas of wall loss. Individual pipes identified to have defects were removed from the ground and taken to the shop for validation testing. Collaboration between pipeline owners and technology suppliers to conduct field trials is an important step in developing new technologies. Lessons learned from performing the field trial will be discussed.

Language

  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 207-216
  • Monograph Title: Pipelines 2014: From Underground to the Forefront of Innovation and Sustainability

Subject/Index Terms

Filing Info

  • Accession Number: 01536189
  • Record Type: Publication
  • ISBN: 9780784413692
  • Files: TRIS, ASCE
  • Created Date: Aug 4 2014 3:01PM