ASME B31.3 - Process Piping Code Design Requirements

Mandar Mulay
This intensive five-day course is designed to give the participants a thorough understanding of Process Piping Code, ASME B31.3. and its practical use for all aspects right from Piping Design to testing and certification. It offers a detailed insight into code requirements pertaining to the design of Piping components, branch connections, selection of flanges, fittings, flexibility considerations, materials requirements, fabrication, welding, NDT examination, and Pressure testing.

The course will cover the Piping systems typically used in Petroleum Industries, Refineries, Petrochemical plants, etc. The course emphasizes understanding of ‘stated’ and ‘implied’ requirements (i.e. content and intent) of the code.

Important code requirements will be explained in a simple, straightforward manner, including the short-cut methods in designing Pipes, Pipe fitting, and Flanges. The participants would be explained in detail the mechanics of adopting and applying the code rules for day-to-day use in their professional work. Lessons are enhanced by actual in-class problem solving, directly applying the rules and equations of the B31.3 Code for various design and operating conditions.

This training course is the complete answer to the demands of piping engineers to know the ASME B31.3 Pressure Piping Code and Upon completion of the training course, the participant shall be a complete ASME Code Professional.

The course further provides concepts and methods for assuring the mechanical integrity of existing piping systems. It presents an overview of how the methodology of API 570 can be applied to assessing the present structural integrity of the piping system and deciding its fitness for continued service as well as the projected remaining life.

DAY 1 - Introduction

  • Objectives and Intent of ASME B 31.3 Code
  • ASME B 31.3 Scope and Applicability
  • Understanding of the Codes, what means SHALL, SHOULD & MAY in Code
  • Code contents, Stated & implied stipulations in the Code
  • What are design conditions, design pressure & design temperature
  • What are various fluid services generally encountered
  • Definitions of Category D, M, U, Normal, and High-Pressure Services
  • Concept of Weld Strength reduction factor
  • Weld Quality factor
  • Allowable stresses and the basis for its calculations
  • Design of piping components for internal pressure


  • Design of piping components for External pressures.
  • Design of branch connections –reinforcements
  • Selection of Flanges
  • Design of pipe fittings such as elbows, tees, and blanks
  • Service Considerations in Design
  • Flexibility considerations
  • Case studies in flexibility calculations
  • Methods to incorporate flexibility in Piping Systems
  • U - loops, Expansion Joints


  • Extensive case studies on Piping Design
  • Piping Span Calculations
  • Selection of Supports and Hangers
  • Material Identification, Certification, and Traceability
  • Code-accepted Materials and material testing
  • Listed, unlisted materials
  • General requirements to be checked before selection of Material
  • Limitations imposed by code on materials
  • Impact testing requirements
  • Acceptance Criteria as per ASME B 31.3


  • Design interface with Fabrication, Assembly, and Erection
  • Code requirement for preheating and PWHT
  • Design interface with Inspection, Examination, and Testing
  • How to Conduct and certify pressure testing.
  • Hydrostatic testing of the piping system
  • Pneumatic testing of the piping system
  • Service leak test
  • NDT in lieu of leak test
  • Case studies


  • Additional Code requirements for special fluids services
  • Specific Design Requirements for Toxic Fluid (M Category) Services
  • Design Requirements for High-Pressure Fluid Services
  • Design Requirements for High Purity (U category) Fluid Services
  • Design Requirements for High Pressure ( Category K) Fluid services
  • Overview of flanges as per ASME B 16.5
  • Piping integrity assessments as per API 570
  • Making run-repair-replace decisions.
  • Calculation of Remaining life and MAWP of piping system
  • Real-world examples and case studies

What is ASME B31.3 training course objective?

  • Familiarize participants with the organization and intent of the B 31.3 code
  • Know how to read the code, and interpret its stated and implied requirements
  • What issues to take into consideration when designing process piping
  • Pressure design of piping and piping components
  • How to analyze piping flexibility and gauge the limitations of piping and piping components
  • Provide participants step-by-step approach to piping design, including the design optimization techniques.
  • Introduce participants to various material selection, fabrication, erection, and testing of piping systems.
  • Be able to understand the mandatory requirements, specific prohibitions, and optional stipulations given in the code and other service restrictions on piping systems.
  • How to conduct and certify the pressure testing.
  • Understand principles of piping integrity assessments as per API 570 and make run-repair-replace decisions.
  • Know how to calculate the Remaining life and MAWP of the piping system

Who should join ASME B31.3 training course by PetroSync?

Ideally suited for Piping engineers and designers, Plant engineers who need an understanding of the requirements for compliance to the Code for piping design and analysis, and testing. Managers, Engineers, Supervisors, and Plant operation personnel who work in Refineries, Petrochemical plants, and other process industries will find this course immensely useful.
Each attendee must bring a Laptop computer with the Microsoft operating system and Scientific Calculator

Mandar Mulay

Mechanical Engineer

Mandar Mulay has about 20 years hands on experience in design and integrity assessment of Piping Systems, Reactors & Storage Tanks, Pressure Vessels, Power Boiler, and Heat Exchanger. He is well conversant with the major industry codes & standards such as ASME Sec. I, ASME B 31.1, B31.3 , B31.4 and B31.8, ASME Sec VIII, BS-5500, TEMA, API -650, IS 803, API 579, ASME PCC-2 etc.

Major projects closely associated with, in his professional career so far are, Qatar Chemicals, Shell, Castrol India, Reliance Industries, Cargill Foods USA, etc. His proficiency in Power Boiler, Piping and Pressure Vessel Codes enables him to trace the similarities and differences of these codes. He also actively involved as Instructor for programs on the subjects of ASME codes, Integrity Assessment, Fitness for Service, etc.

Along with his career in Engineering and Design Department in a multinational company at a very senior post for the last 20 years, he is also visiting faculty to a well known Engineering College in India for their P.G. Courses in Piping Design and Engineering

Apart from being visiting faculty, He has also conducted several Training Courses ( ASME Sec. I, ASME Sec. VIII, ASME B 31.3 Piping Codes , API 579 FFS code, ASME PCC-2 Repair practices, and Heat Exchanger Design Operations & Maintenance ) in Saudi Arabia, Qatar, Bahrain and UAE for engineers from companies like Saudi Aramco, SABIC group of Companies, Qatar Petroleum, ADNOC, BAPCO, DEWA, Gulf Petrochemicals etc. He has already conducted many times the training courses in API 579, where the participants rated him “Excellent” for these courses.

  • Code PST0270-202401
  • Start Date 26 Feb, 2024
  • End Date 01 Mar, 2024
  • Locations Kuala Lumpur, Malaysia
  • Cost USD 3250
  • Code PST0270-202402
  • Start Date 12 Aug, 2024
  • End Date 16 Aug, 2024
  • Locations Bandung, Indonesia
  • Cost USD 3250
  • Register
  • Code PST0270-202403
  • Start Date 18 Nov, 2024
  • End Date 22 Nov, 2024
  • Locations Kuala Lumpur, Malaysia
  • Cost USD 3250
  • Register
  • Code PST0270-202404
  • Start Date 16 Dec, 2024
  • End Date 20 Dec, 2024
  • Locations Bandung, Indonesia
  • Cost USD 3250
  • Register
  • Code PST0270-202301
  • Start Date 15 May, 2023
  • End Date 19 May, 2023
  • Locations Kuala Lumpur, Malaysia
  • Cost USD 2850
  • Code PST0270-202302
  • Start Date 24 Jul, 2023
  • End Date 28 Jul, 2023
  • Locations Jakarta, Indonesia
  • Cost USD 3150
  • Code PST0270-202303
  • Start Date 30 Oct, 2023
  • End Date 03 Nov, 2023
  • Locations Kuala Lumpur, Malaysia
  • Cost USD 3150
Code Start Date End Date Locations Cost Instructor Register
PST0270-202401 26 Feb, 2024 01 Mar, 2024 Kuala Lumpur, Malaysia USD 3250 Mandar Mulay
PST0270-202402 12 Aug, 2024 16 Aug, 2024 Bandung, Indonesia USD 3250 Mandar Mulay Register
PST0270-202403 18 Nov, 2024 22 Nov, 2024 Kuala Lumpur, Malaysia USD 3250 Mandar Mulay Register
PST0270-202404 16 Dec, 2024 20 Dec, 2024 Bandung, Indonesia USD 3250 Mandar Mulay Register
PST0270-202301 15 May, 2023 19 May, 2023 Kuala Lumpur, Malaysia USD 2850 Mandar Mulay
PST0270-202302 24 Jul, 2023 28 Jul, 2023 Jakarta, Indonesia USD 3150 Mandar Mulay
PST0270-202303 30 Oct, 2023 03 Nov, 2023 Kuala Lumpur, Malaysia USD 3150 Mandar Mulay
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