by Tim Allen and Jennifer Jia, Central Arizona Project
The Central Arizona Project (CAP) operates and maintains 21-foot diameter flexible steel pipes as part of the aqueduct system that delivers almost 2 billion gallons of Colorado River water per day to Maricopa, Pinal and Pima Counties in central and southern Arizona. These pipes are some of the largest diameter pipes existing in the world. While they lie hidden and out of sight, they are susceptible to corrosion, erosion and the forces of nature. To minimize risk to our customers and stakeholders, CAP performs condition assessments of our critical assets for purposes of budgeting and planning on-condition restoration. This presentation shall detail how Central Arizona Project plans for the inspection of pipelines, and our modern tools and methods of evaluation. Noteworthy in this presentation will be details on CAP's use of mobile tablets to capture condition data in a Geographic Information System database.