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Design of Buried High Density Polyethylene (HDPE)

Design and analysis of buried High Density Polyethylene (HDPE) Pipe in accordance with the ASME Boiler and Pressure Vessel Code Case N-755

This Standard was last reviewed and reaffirmed in {{activeProduct.ReaffirmationYear}}. Therefore this version remains in effect.

Design of Buried High Density Polyethylene (HDPE)
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Description

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This self-study course is designed to be taken at your convenience, and on your own schedule. You have 90 days to finish the course from the time of purchase.

This self-study course provides training on the design and analysis of buried High Density Polyethylene (HDPE) Pipe in accordance with the ASME Boiler and Pressure Vessel Code Case N-755. The course covers all aspects of the design of buried HDPE Pipe including pressure design, soil loadings, thermal expansion loads, and seismic design requirements. In addition, the design of coupled buried HDPE and above ground steel piping systems will be presented. The course material includes presentations, two piping design exercises, as well as identification of applicable reference documents.

You Will Learn To:

  • Describe the scope of Code Case N-755
  • Explain the relationship of Code Case N-755 to ASME B&PVC
  • Identify HDPE piping design requirements and analysis methods as specified in Code Case N-755
  • Demonstrate calculation methods for soil springs and other need soil parameters
  • Describe the design of coupled buried HDPE and above ground steel piping systems

Who Should Attend
Operating Nuclear Plant and "Architect/Engineers" Staff Engineers, Management, & Project Management personnel involved with design, procurement, inspection or installation of buried HDPE piping in new applications or the replacement of existing corroded steel piping systems in ASME Section III, Class 3 safety related (Subsection ND) applications.

To take this course you should have a personal computer, Web browser, Internet connection, and software to display PDF files (such as Adobe Reader®).

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Outline

Module 1

  • Introduction and Objectives
  • Course Outline and Overview
  • Background
    • Piping Design to ASME B&PVC
    • ASME SWG for Polyethylene Pipe
    • Relationship of Code Case N-755 to ASME BPVC
    • Scope of Code Case N-755
    • EPRI HDPE Testing Program
    • EPRI Report 1013549
    • Relationship of EPRI Report to Code Case

Module 2

  • Basis of development of allowable design stress
  • Strain Limits
  • Elastic modulus and flexural modulus
  • Coefficient of thermal expansion
  • Poisson’s ratio
  • Bending fatigue of polyethylene piping
  • Buried HDPE Pipe Design Requirements
    • Design Loads and Failure Modes
    • Mechanical Properties
  • Overview of Code Case N-755

Module 3

  • Buried HDPE Pipe Design Requirements
    • Demand Definition
    • Capacity Evaluation

Module 4:

  • Buried HDPE Piping Analysis Methods
  • Manual Methods
  • Computer Methods
  • Soil Spring Calculations

Module 5: Soil Spring Example

  • Integrated Piping Design Methods
    • Above Ground Piping Model
    • Buried Steel Piping Model
    • Buried HDPE Piping Model
    • Steel Pipe -HDPE Interface Model
    • Soil - Above Ground Pipe Interface Model
    • Analysis
      • Deadweight
      • Thermal
      • Seismic
      • Combination Results
    • Piping Design/Analysis
    • Pipe Support Design/Analysis

Module 6

  • Example problems (exercises)
  • Solutions to example problems (exercises)
  • Final Exam
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