#905 - Modeling and Stress Analysis of Process Plant Piping Systems

Course Objective

Upon completion of this course, attendees will be able to apply the piping system stress analysis requirements of ASME B31.3 to process plant piping systems and understand how to use piping analysis software to meet these requirements. The piping system analysis discussions are not computer program specific. However, specific illustrations used are based on the Caesar II program.

Who Should Attend?

Engineers who are responsible for performing piping system stress analysis and others who must have a good understanding of its requirements.

Course Description

This course is composed of two parts. The first part discusses the fundamentals of pipe stress analysis with an emphasis on process plant piping systems. The second part continues from the first by discussing the practical application of piping stress analysis computer programs to build piping system models and interpret the output. It also discusses the interface with detailed piping system design and the fundamentals of dynamic analysis. Sample problems and participant exercises are included where appropriate. The following topics are covered:

Part 1

• Classification of loading and the concept of primary, secondary, and peak stresses
• Wall thickness calculations based on internal pressure in accordance with ASME B31.3
• Maximum allowable support span for horizontal pipe runs
• Examples of design information contained in ASME B31.3, (e.g., allowable stress, modulus of elasticity, thermal expansion coefficients, and other important factors)
• Examples of the types and functions of various supports and restraints used in a piping system
• Design considerations and requirements for performing a detailed computer stress analysis

Part 2

Static Analysis

• Overview of Piping System Modeling
• Pipe Geometry and Layout
• Diameter and Thickness
• Extent of System Model
• Design Conditions, Pipe Material Properties, and Loadings
• Pressure
• Temperature
• Pipe Material Properties
• Weight
• Wind
• Earthquake
• System Modeling for Design Conditions
• Alternate Operating Scenarios
• Piping Component Stress Intensification Factors
• End Point Displacements
• Pressure Vessels
• Rotating Equipment
• Air-Cooled Heat Exchangers
• Storage Tanks
• Modeling Supports, Restraints, and Anchors
• Equipment Nozzle Flexibility
• Additional Modeling Considerations
• Friction at Supports and Restraints
• Expansion Joints
• Cold Spring
• Large Diameter Pipe
• Refractory Lined Pipe
• Closed Loops
• Design and Modeling Considerations for Particular System Types
• Machinery Piping Systems
• Atmospheric Storage Tank Piping
• Air-Cooled Heat Exchanger Piping
• Piping To Tall Towers
• Safety Valve Relief Systems
• Jacketed Pipe
• Control Valve Stations
• Checking the Input
• Evaluating the Output
• Stress
• Displacements
• Reaction Loads
• Interface Between Piping Analysis and Detailed Design

Dynamic Analysis

• Mechanical Natural Frequency
• Harmonic Analysis
• Response Spectrum Analysis
• Time History Analysis
• Example Evaluation Procedures
• Water Hammer
• Relief Valve
• Piping Vibration and Fatigue Evaluation

Course Duration - 2 days