Comparison of Identified Distress in CCP Pipelines Operated by Water Utilities in North America

Concrete Cylinder Pipe (CCP) has been manufactured in North America since 1942 and forms the backbone of its water supply infrastructure. By all accounts, CCP is a skillfully engineered composite that exploits concrete in compression and steel in tension to create an economical, efficient, and long lasting product. Consequently, nearly every major water utility in North America uses CCP for the transmission and distribution of raw and potable water. Remote Field Eddy Current / Transformer Coupling (RFEC/TC) is commonly utilized by pipeline operators to identify and quantify the number of broken wires in individual CCP pipes. Results show that 3.7% of the pipes inspected using RFEC/TC contain broken prestressing wires and that although there is some correlation between certain pipeline properties (eg: whether or not the pipes contain shorting straps), condition assessment should still be performed to assess which 3.7% should be targeted for rehabilitation and/or replacement. This paper examines this assertion by studying data taken from approximately 175,000 pipes that have been examined in North America using Remote Field Eddy Current / Transformer Coupling (RFEC/TC) and comparing the occurrence of distress found in these pipes to determine if any trends exist.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0784408548
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Semanuik, Sonya M
  • Mergelas, Brian
• Conference:
  • Pipelines 2006: Service to the Owner
  • Location: Chicago IL, United States
  • Date: 2006-7-30 to 2006-8-2
• Publication Date: 2006

Language

• English

Media Info

• Media Type: CD-ROM
• Features: References; Tables;
• Pagination: 8p
• Monograph Title: Pipelines 2006: Service to the Owner, July 30 to August 2, 2006, Chicago, Illinois. Proceedings of the Pipeline Division Specialty Conference

Subject/Index Terms

• TRT Terms: Concrete pipe; Condition surveys; Cylinders (Geometry); Prestressing; Rehabilitation; Water supply structures; Water utilities; Wire
• Uncontrolled Terms: Infrastructure distress; Remote field eddy current/transformer coupling
• Geographic Terms: North America
• Subject Areas: Maintenance and Preservation; Pipelines;

Filing Info

• Accession Number: 01082728
• Record Type: Publication
• ISBN: 0784408548
• Files: TRIS
• Created Date: Dec 18 2007 11:31AM