Session: OAC-02-01 Qualification and Testing

Paper Number: 155741

155741 - Use of Full-Scale Destructive Testing as a Means for Managing Mechanical Integrity 

Abstract: 

Full-scale destructive testing is an effective means for evaluating the mechanical integrity of pipeline and piping systems. Typically, inspection technologies provide the first source of data from which critical integrity management decisions are made. The resulting inspection data are then processed and utilized in a variety of ways, including finite element analysis, fracture mechanics, and risk-based software packages that all involve some form of numerical modeling. While there is no doubt that numerical modeling plays a critical and essential role in managing the structural integrity of aging assets, the increased use of full-scale testing could greatly enhance industry’s ability to more accurately evaluate the threats associated with anomalies of various forms.

The fundamental goal of any full-scale test is to simulate real-world conditions and establish a true limit state condition by applying simulated loads that could lead to failure. These include various means of loading including bending, axial tension / compression, elevated temperature conditions, cyclic pressure testing, and burst testing. Further, full-scale testing is an ideal means for validating repair technologies, including composite repair systems. This paper provides several case studies on the full-scale assessment of dents, crack-like features in seam welds, and simulated bending associated with external loads, as well as the assessment of repair technologies including composites. Also included is a discussion on data acquisition systems and monitoring devices, as well as a section on safety and calculation of burst energies.

The goal of this paper is to provide readers with a better understanding on the benefits associated with full-scale testing, while at the same time presenting various options available for testing that include the fabrication of specialized fixtures and equipment to achieve desired loading conditions.

Presenting Author: Chris Alexander Acuren Inspection

Presenting Author Biography: Dr. Chris Alexander, PE is currently the General Manager of Engineering for Acuren Inspection. For 30 years he has been involved in the assessment of damaged high pressure pipelines around the world. The early portion of his career focused on dented pipelines, although a majority of his career has involved the evaluation of high strength composite technologies for high pressure pipelines, resulting in the publication of more than 150 technical articles and presentations around the world. Today, Chris focuses his energies on working with technology companies and pipeline operators using his skill set that includes advanced engineering methods, business strategy, leadership, public speaking, and team building. He received B.S., M.S., and Ph.D. degrees in Mechanical Engineering from Texas A&M University and is a registered Professional Engineer in the Texas.

Authors:

Chris Alexander Acuren Inspection
Travis Greenstreet Acuren Inspection