Pipework Vibration

1. Trainer Intro
2. VibTech Intro
3. Tips with using MS Teams
4. Course Format and Timescales
5. Multiple Choice Tests

1. Overview of Pipework Vibration
2. Introduction to Energy Institute publication ''Guidelines for the avoidance of vibration induced fatigue failure in process pipework'', 2nd edition, 2008 (current)

1. Definitions
2. Units of measurement
3. Introduction to Spectra
4. Natural Frequency
5. Forced Vibration
6. Resonant Vibration

1. Identifying the main excitation mechanisms causing pipework vibration:
- Flow Induced Turbulence
- Mechanical Excitation
- Pulsation
- Acoustic Induced Vibration
- Surge & Momentum Change
- Cavitation & Flashing
- Small Bore Connections
- Thermowells

2. Understanding the consequences which could lead to failures:
- Fatigue
- Fretting

1. Explanation of the key factors affecting fatigue life
2. Effects of Stress
3. Fatigue Endurance curves
4. Fatigue of Welds
5. Effects of Corrosion
6. Intro to BS 7608

1. Introduction to the various tools and techniques
2. Suggested sequence of events for investigation and assessment of risk of Pipework Vibration Fatigue

1. Intro to Qualitative and Quantitative Assessment
2. Method for assessment of potential excitation mechanisms.

1. Quantitative Assessment method for assessing the risk of Failure due to Flow Induced Turbulence
2. Primarily to understand key factors and their significance

1. Quantitative Assessment method for assessing the risk of Failure due to Mechanical Excitation
(e. g. Direct excitation from Machines or indirectly from other pipework)
2. Primarily to understand key factors and their significance

1. Quantitative Assessment method for assessing the risk of Failure due to 3 types of tonal pulsations due to acoustic resonance
(reciprocating machines, rotating machines and dead-leg branches).
2. Primarily to understand key factors and their significance

1. Quantitative Assessment method for assessing the risk of Failure due to high frequency Acoustic Induced Vibration (AIV)
2. Primarily to understand key factors and their significance

1. Quantitative Assessment method for assessing the risk of Failure due to Surge and Momentum change associated with fast acting valves
2. Primarily to understand key factors and their significance

1. Quantitative Assessment method for assessing the risk of Failure due to Cavitation & Flashing in liquid systems
2. Primarily to understand key factors and their significance

Review including Multiple Choice Questions

1. Quantitative Assessment method for assessing the risk of Failure of Small Bore Connections (SBC), considering Geometric Factors and Location Factors for 4 generic configurations
2. Primarily to understand key factors and their significance

1. Quantitative Assessment method for assessing the risk of Failure of Thermowells due to flow induced vortices caused by flow of fluid past thermowell
2. Primarily to understand key factors and their significance
3. Introduction to alternative standard ASME PTC B19. 3TW-2010

1. Learning Visual Survey techniques to identify pipework with increased risk of failure
2. Learning what to look for to identify good and bad practice Supported by library photo
3. Opportunity to try to identify some common examples of Bad Practice from Photo Library

1. Learning Vibration Survey techniques to identify pipework with increased risk of failure
2. How to setup a vibration meter and where to take measurements
3. How to process results and how to interpret results

Latest Energy Institute recommendations for instrument tubing covering protection against vibration for pipework and structure mounted instrumentation and allowance for large scale deformations (thermal expansion)

Introduction to a new 'Concern factor' for assessing and ranking Pipework Vibration results.

Review including Multiple Choice Questions

Introduction to other pipework vibration assessment techniques, including:
- Strain Gauges
- FEA
- Motion Amplification
- Operating Deflection Shape Analysis
- Modal Analysis

1. Introduction to Strain Gauges, including where to measure strains
2. Fatigue Assessment methods

1. Review of corrective actions for solving vibration problems on Main Lines, including:
2. Flow Induced Turbulence
3. Mechanical Excitation
4. Pulsation
5. Acoustic Induced Vibration
6. Surge & Momentum Change
7. Cavitation & Flashing

Considerations for the use of Visco-Elastic Dampers to solve Main Line vibration issues.

1. Review of Corrective actions for solving vibration problems on Small Bore Connections (SBCs)
2. Introduction to Easy-Brace® universal SBC solution
3. Design considerations, relating to brace stiffness, the use of I-beams and the problems with thin-walled pipes

Introduction to VibTech Quantitative Assessment Tool (QAT) - performs all EI LOF calculations in Sections T2, T3 & T4 of EI Guidelines

Review including Multiple Choice Questions

1. Worked Example - Main Line LOF - Gas Compression System
2. Worked Example - SBC LOF calculation Type 1
3. Worked Example - SBC LOF calculation Type 2
4. Worked Example - SBC LOF calculation Type 3

1. Corrective Actions Case Studies (AVT) - Easy Brace
2. Corrective Actions Case Studies (AVT) - Visco-Damper
3. Corrective Actions Case Studies (AVT) - Dynamic Vibration Absorber

1. Summary of Good Practice features for Main Lines, SBCs and Tubing
2. Most common mistakes

Summary of key learnings during the course