Reliability

 

Industry has made efforts to establish a framework for the tubular connection product line verification in terms of the structural integrity and sealing capacity for high pressure/high temperature and thermal recovery wells. However, these frameworks are a work in progress.

In consideration of improving the confidence in the interpolation and extrapolation methods presented in the current standards and of applying the quantitative element analysis (FEA) methods to qualitative evaluation,...

Corrosion assessment criteria in current standards for onshore transmission pipelines rely on safety factors that are experience-based, with their implication on the risk or safety level associated with the pipeline unknown.

Working as part of a joint industry project, we have developed reliability-based corrosion assessment criteria in a deterministic format that are calibrated to achieve a specified safety level. The main features of the criteria are:

  • Inclusion of calibrated safety factors...

In this article, C-FER's Thomas Dessein discusses probablistic defect management. Learn about:

  • Elements of a probabilistic failure model
  • Reliability-based defect management through a case study

Published in the 2018 issue of World Pipelines. 

C-FER Technologies is pleased to be featured in World Pipelines Magazine.

Article highlights how C-FER is helping pipeline operators use probabilistic assessment methodology to assess and manage pipeline reliability. The article covers elements of a probabilistic failure model including:

  • variability in pipeline properties and dimensions
  • measurement uncertainty
  • model uncertainty
  • defect growth rates

Download the article to learn more.

 

Course Overview:

This course will provide attendees with a basic understanding of Reliability Theory and Run-Life Measures, and an overview on the Industry best practices on ESP failure nomenclature, data collection, and data analysis.

The objectives of this course are to:

  • Review the Failure Nomenclature Standards for collecting and tracking ESP failure information;
  • Learn how to apply the Failure Nomenclature Standards to common types of ESP failures;
  • Review Reliability Theory and common run...

The primary design condition in conventional onshore oil and gas pipeline standards is based on limiting the hoop stress under the maximum operating pressure to a fraction of the material specified minimum yield strength. This fraction is referred to as the utilisation factor and is varied as a function of location, temperature and joint type to achieve a level of conservatism consistent with the failure susceptibility and failure impact of the pipeline.

While this methodology has served the...

Abstract

A new Annex on reliability-based design and assessment of onshore natural gas pipelines has been adopted for inclusion in the 2007 edition of the Canadian Standard Association’s pipeline standard (CSA-Z662). The same Annex is also being reviewed for inclusion in the next edition of the ASME gas pipeline code (ASME B31.8). The Annex defines a set of specific reliability targets as a function of pipeline diameter, pressure and population density; prescribes the process of...

Abstract

Line pipe is often coated prior to installation in order to achieve some protection against the environment. Many of the coatings used today require the pipe to not only be cleaned and degreased, but also to be preheated to a temperature of 200–240°C during application of the coating material. A typical coating thermal cycle involves rapid heating of the pipe using induction coils, application of the coating, and quenching to cool the pipe for handling purposes. It is generally...

Abstract

The reliability-based design and assessment (RBDA) methodology has gained increasing acceptance in the pipeline industry, largely due to a multi-year PRCI program aimed at establishing RBDA as a viable alternative for the design and assessment of onshore natural gas pipelines. A key limit state of buried pipelines that operate at elevated temperatures is upheaval buckling. The elevated temperatures generate large compressive axial forces that can cause Euler buckling susceptibility....

Abstract

The pipeline industry is moving to embrace more quantitative analysis methods for assessing pipeline integrity and demonstrating the benefits of integrity maintenance programs. Analysis based on structural reliability concepts is ideally suited to this purpose. In the context of corrosion management, the essence of this approach is to combine appropriate failure prediction models, in-line inspection data, the physical and operational characteristics of the pipeline, and corrosion...