Session: FSI-04-01 FSI Design for Industry and Renewable Energy Transport - 1

Paper Number: 105217

105217 - Flow-Induced Vibration of Piping Systems 

This paper provides a well-structured approach to address flow-induced vibration (FIV) in piping systems and pipelines. Starting with immediate actions when significant vibration is observed, followed by root-cause determination with a description of the various sources of excitation, proceeding to monitoring techniques to monitor the hydraulics or the vibratory motions, determining the degree of severity of the monitored parameters, and providing the full range of hydraulic and structural options to reduce or eliminate the vibration. The paper includes a roadmap to the existing standards and criteria for flow-induced vibration in piping systems, across industries. The paper is meant to help the practicing engineer take a logical and well structured approach to diagnose the root cause of flow-induced piping vibration, and determine the necessary monitoring approach, and the options for resolution. The unique aspect of this paper is (1) providing a structure to a topic not well covered in ASMEB31 or ASME III, and (2) listing the complete set of root causes of flow-induced vibration. Also, of interest is the roadmap to the standards that address piping vibration among industries (API for gas compressor stations, ASME O&M for nuclear piping systems, etc.). The reader will be guided through the analytical and numerical options to analyze the hydraulic forcing functions, the concepts of acoustic and structural resonance, and the imporatnec of stiffness and stress concentrations to explain FIV-induced fatigue failures.

Presenting Author: George Antaki Becht Engineering Co., Inc.

Presenting Author Biography: Mr. Antaki has over 45 years of experience in the pressure vessel and piping industry. He chairs the ASME III Working Group Piping Design, is past-chair and current member of ASME B31 Mechanical Design Committee, and various other ASME committees. He is the author of three textbooks on the subject of pressure equipment, piping and pipelines.

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