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Michael J. Rosenfeld, P.E.
President
Kiefner & Associates, Inc.
Education
B.S., Mechanical Engineering, University of Michigan, 1979
M.S., Mechanical Engineering, Carnegie-Mellon University, 1981
Qualifications
Since joining Kiefner & Associates, Inc. in 1991 Mr. Rosenfeld has participated in a broad range of projects including fitness-for-purpose assessment of pipelines and piping, pipeline loading and stress analysis, failure investigation, pipeline codes and standards development, and pipeline research.
Relevant Experience
Fitness-for-Purpose:
Determined that mechanical damage features identified on a major oil pipeline were not immediate integrity threats, enabling the operator to avoid pressure reduction and immediate investigation, and realize significant cost savings. Assisted pipeline operators with successful waivers to operate in the US at 80% of SMYS by demonstrating fitness of the lines for uprated service.
Pipeline Stress Analysis:
Analyzed numerous pipelines for stresses induced by external loadings due to spanning, currents in water crossings, and soil movement due to subsidence or settlement. Established criteria for monitoring or mitigation based on condition of the lines.
Failure Investigation:
Performed investigations of failures in line pipe, appurtenances, and mechanical equipment involving diverse causes of failure such as manufacturing defects, fatigue, hydrogen cracking, stress-corrosion cracking, soil movement, welding practices, and corrosion.
Codes and Standards:
Primary author of major revisions to the ASME B31.8 code concerning longitudinal stress design, and evaluation and repair of mechanical damage. Primary author of major rewrite of ASME B31G currently in final approval stages.
Pipeline Research:
In research projects for PRCI and GTI, demonstrated the application of B31G for pipe bends and elbows, the importance of dent shape on fatigue behavior of dents, and a method for evaluating dents affecting welds; was the first to evaluate dent strain as a screening tool; developed a criterion now in ASME codes for evaluating ripple deformations in bends; prepared comprehensive review of research on mechanical damage; demonstrated low susceptibility of gas pipelines to pressure-cycle fatigue.
Professional Affiliations
Member, ASME B31.8 Gas Transmission Piping Systems Section Committee
Member, ASME B31 Mechanical Design Technical Committee
Member, ASME B31 Standards Committee
Member, American Welding Society
Former Member, Joint ASCE-ASME Task Group on Design of Buried Pipe
Former Member, API RP-1117 Task Force on In-Service Relocation of Pipelines
Instructor, ASME Professional Development Short Course on ASME B31.8 Code
Presenter, SGA Integrity Management Web Conference Series
Registered Professional Engineer, State of Ohio
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