Legacy Publications

Barry Hindin, PhD, PE Senior Principal Engineer Kiefner and Associates, Inc. The Failure Analysis and Welding (FAW) group at Kiefner traditionally investigates the causes of failures of buried pipelines carrying various petroleum products ranging from crude oil, refined liquid products, natural gas, and condensates. However, many of our customers do not know that Kiefner has […]

Kiefner and Associates, Inc., (Kiefner) completed several rounds of public testimony before the Illinois Commerce Commission (ICC) seeking approval for an independent engineering report based on their efforts in the City of Chicago. The report assessed the integrity and remaining lifespan of Chicago’s cast iron and ductile iron pipe system operated by People’s Gas and

Stress Assessment of Buried Pipes under Road Crossing or Construction Sites Table of Contents: Introduction Analysis Approach Comparison of Kiefner Approach with API RP 1102   Introduction All buried pipes experience loading from the weight of soil overburden. When pipelines cross railroads, roads, parking lots, or construction sites, the pipes also experience live surface loading

  Table of Contents: What Is Selective Seam Weld Corrosion?  Analysis of DOT Reportable Incidents Integrity Implications of SSWC Managing the Threat from Selective Seam Weld Corrosion What Is Selective Seam Weld Corrosion? Selective Seam Weld Corrosion (SSWC) is a type of corrosion that affects the bondline region and heat-affected zone (HAZ) of the longitudinal

Pressure Reversals – How to Identify and Understand the Potential Implications of Pipeline Integrity     Table of Contents:   Introduction Pressure Reversals Considerations for when Pressure Reversals have or are expected to occur Introduction Pressure testing of hazardous liquid and natural gas pipelines is conducted for various reasons, some mandated in U.S. Pipeline Regulations

Geo-Hazard Monitoring of Pipelines using Strain Gauges    Table of Contents: Introduction Stress near Pipe Bends and Exposed Pipelines The Issue with Preexisting Stress Direction Predicting Preexisting Stresses   Introduction Pipelines are sometimes subjected to geo-hazards, such as long wall mining subsidence and slope movement. A commonly practiced method to reduce stress in such situations