Designing according to the EN13445 code

About the course

The EN13445 design code is the harmonized design code for unfired pressure vessel design under the Pressure Equipment Directive (2014/68/EU). Often the rules are applied using automated software packages and the engineer can lose the overview of the calculation being performed.
This course explains the fundamental equations and principles in these design rules. For example: What is the area replacement rule? How is the Taylor and Forge method applied? What inner-stiffener distance is required to prevent collapse under vacuum, and why? What is the difference between primary and secondary stresses, and how is this evaluated in the code?
Next to explaining the rules and how to apply them, participants are challenged on why a rule is formulated in a particular way and show important differences with ASME BPVC Section VIII Division 1 code.

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9 modules

7.5 hrs


1-yr access


Course Objective

To provide static equipment engineers with a solid understanding of the design basis of the EN13445 design code.” 

Program & Details

  1. Welcome to the course

  2. Your instructors

  3. Live session schedule

  4. How to use this course & join the live sessions

  5. Personal Certificate requirements

  1. Introduction

  2. Scope

  3. Materials

  4. Brittle failure & creep

  5. Module 1, Exercise 1

  6. Welds and discontinuities

  7. Fatigue analysis

  8. Wall thickness & corrosion

  9. Hydrostatic test pressure

A sample of the first module is available for free, so you can learn more about the teaching style and understand if the course fits your needs.

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  1. Intro: Stress definitions

  2. Stress/Strain relationships

  3. Stress/Strain relationships

  4. Load cases

  5. Maximum design stress

  6. Module 2, Exercise 1

  1. Intro: Shell design

  2. Cylindrical shells

  3. Spherical shells

  4. Formed ends

  5. Cones and conical sections

  6. Cone to cylinder transition

  7. Module 3, Exercise 1

  1. Intro: Shell design

  2. Cylindrical shells

  3. Cylinder with Stiffeners

  4. Module 4, Exercise 1

  5. Cones

  6. Shell ends

  1. Intro: Vessel openings

  2. Pressure area method

  3. Analysis of a set-on nozzle 

  4. Adjacent openings

  5. Special cases 

  6. Module 5, Exercise 1

  1. Intro: Flat ends & flanges

  2. Clause 10: Flat Ends

  3. Flange types

  4. Taylor-Forge flange check

  5. Pressure rating method 

  6. Flange analysis 

  7. Module 6, Exercise 1

  1. Intro design-by-analysis

  2. What is design-by-analysis?

  3. The equivalent stress

  4. Module 7, Exercise 1

  5. Stress Decomposition

  6. Stress assessment

  7. Stress decomposition 

  8. Instability & Buckling

  9. Module 7, Exercise 2

  1. Intro: Fatigue assessment

  2. Simplified fatigue check

  3. Detailed fatigue assesment

  4. Fatigue safety factor 

  5. Comparing fatigue checks

  6. Module 8, Exercise 1

  1. Intro: Heat exchangers

  2. Types of heat exchagers

  3. Tubesheet thickness

  4. Module 9, Exercise 1

  5. Alternative methodes 

  6. Bellows & expansion joints

  7. Rectangular vessels

  8. Applied forces & moments

  9. Lifting lugs

  10. Saddle supports

  11. Supports

  1. Congratulations

  2. Course evaluation survey

  3. Your Personal Certificate

  4. Rate this course

  5. Related resources

  6. Follow up


After this course, you…
  • understand the structure & scope of the code,
  • understand the failure mechanisms considered in the code,
  • are able to use the design rules for many components, amongst others cylindrical shells under internal & external pressure, openings and nozzles, flat ends and flange connections, heat exchanger tube sheets, rectangular shells and saddles and skirts,
  • understand the role of Design by analysis (Finite Element Analysis) for EN13445 design,
  • can identify the limitations of the design rules,
  • know the important differences with the ASME BPVC VIII-1.

Intended for

  • Those required to design pressure vessels as per the EN13445 and that want a solid overview and understanding of the design methods used in the code.
  • Engineers that already have experience with the EN13445 and that want to improve their understanding of the backgrounds for the different rules and methods applied in the code.
  • Technicians involved in the production of EN13445 unfired pressure vessels that want a solid understanding of the design basis of their vessels.

Prerequisites and level

  • None

  • Level: Foundations

Selected course format


Price on request
  • Face-to-face with instructors
  • On-site or in Rijswijk
  • Printed course materials
  • Lunch included
  • 1-month full BOSpulse license
  • For teams


700 / user
  • Self-learning modules
  • Online discussion forum
  • Live sessions with instructor
  • 1-year access
  • For individual learning


900 / user
  • Self-learning modules
  • Online discussion forum
  • Live sessions with instructor
  • 1-year access
  • For teams (min. 4)


  • Video lectures

  • Video demonstrations

  • PDF exercises

  • Exercise answers by demonstrations (video)

  • Multiple choice questions that help understand technical concepts

The majority of training material are videos. These are not available for download, but can be accessed directly with your account on the portal. Apart from quizzes the exercise files can be downloaded. These can include .pdf files with the exercise questions, software models or other file types. You receive 1-year unlimited access to the course. This allows you to watch content again if this is beneficial for your work projects.

We encourage participants to submit feedback and questions. These form the basis for new, future videos that will be added to the online course, but they will not be answered to the student directly.

Participants receive 1-year unlimited access to the course including new videos that are added during this year. Participants receive an email notification upon addition of new course videos.

No software is used for this course or will be distributed.

Yes, this course qualifies for PDH hours as per the NCEES CPC Guidelines.

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