Power world simulator power system analysis problems
4 Wood's Field ServicesĬontact Wood should you suspect problems in your piping system due to AIV. If you are involved in the design or operation of high pressure systems, contact Wood for application support relating to AIV and other vibration issues.
Power world simulator power system analysis problems software#
Specialized software is used to improve the quality and efficiency of the analysis, ensuring the project is completed quickly and on budget.įor new systems such as Centrifugal Compressor Systems customers often conduct both the Acoustic-Induced Vibration (AIV) Study and the Flow-Induced Vibration (FIV) Study to ensure that both excitation sources are properly addressed. Wood can meet whichever of the above two approaches the customer prefers. The PWL is calculated in a similar manner to the D/t method, but there are some differences in how the fatigue limit is derived.
Energy Institute Guidelines (2008). This method checks locations such as branches and welded attachments.The design limits are a function of the PWL as established by Eisinger, Carucci & Mueller, and NORSOK Standard. This is approach is used to check for piping against acoustic fatigue by comparing the Diameter/Thickness ratio to empirical design limits. There are two approaches for evaluating AIV: Recommend modifications to the piping system, valves or other solutions to reduce dynamic stress levels.Identify AIV sources and high risk areas and.The Acoustic-Induced Vibration Study (AIV design study) calculates the PWL and determines if the piping system is sufficiently strong to resist AIV fatigue. If necessary, changes are made to either the PWL or the piping system.įor a new project, the Engineering Company (EC) or Owner asks Wood to: Sound Power Level (PWL) refers to the acoustic energy generated by flow through a pressure reducing valve or device. The broadband excitation causes the locations to be resonant, resulting in cracking and fatigue failure.ĪIV fatigue failure may occur in a very short period of time (minutes to hours). Small-bore connections, also called branch attachments, such as welded supports are most at risk. The AIV study is typically performed for: Source: Chemical and Process Technology 2009ĪIV occurs in a compressible flow stream such as gas or two phase piping systems. Example of Piping Shell Mode due to AIV on pipingįigure 2. The internal acoustic energy can also create external noise that affects operator safety (hearing loss).įigure 1. Unless controlled, AIV results in catastrophic piping failures (Figure 2). Shell mode vibration causes small-bore piping to vibrate. This acoustic-induced vibration (AIV) leads to fatigue failure in the process piping or nearby small-bore connections and generates broadband sound radiation in the range of 500 Hz to 2000 Hz.įigure 1 illustrates piping shell modes that are excited by acoustic-induced energy. Pressure reducing devices can generate high acoustic energy that excite the pipe shell vibration modes. Webinar: Shake, rattle and grow – part II.Webinar: Shake, rattle and grow – part I.Webinar: (Digital) reliability = profitability.Troubleshooting, Root Cause Analysis (RCA).PostPro – field data processing and analysis.Motion Amplification Vibration Analysis.Underwater Noise Monitoring and Assessment.Noise risks in the natural gas industry.Noise Management and Control – Service Overview.Machinery Condition and Performance Monitoring.Condition Monitoring and Remote Vibration Analysis.Surge Control Design for Centrifugal Compressor Systems.Shell Transverse Acoustical (STA) Analysis.
Pulsation & Mechanical Analysis: Screw Compressor.Pulsation & Mechanical Analysis: Reciprocating Pump.Pulsation & Mechanical Analysis: Reciprocating Compressor.Fuel Gas Compressor Piping Transient Analysis.Structural Vibration and Dynamic Design Analysis.Small-Bore Connections (SBC) Assessment.Piping Vibration and Integrity Assessment.Finite Element Analysis (FEA) and Computational Fluid Dynamics (CFD).Acoustic-Induced Vibration (AIV) Analysis.Acoustic Fatigue Assessment for Blowdown Systems.Static Equipment & Structures (Piping Vibration & Fatigue).