ASME Section VIII Division 1 and 2 - Pressure Vessel Series

Introduction

This 5-day program offers detailed insight and thorough understanding of the most common ASME codes, pertaining to design/ engineering and testing of the pressure vessels namely Section VIII Div. 1 and Section VIII Div. 2. This course emphasizes understanding of ‘stated’ and ‘implied’ requirements (i.e. content and intent) of the codes. The participants would be explained in detail the mechanics of adopting and applying the code rules and design formulas for different Design conditions and Services. 

ASME VIII Div. 1 is the most commonly adopted code which is simple and user friendly, whereas, ASME VIII Div 2 is an alternative code which provides a better-engineered vessel with detailed stresses calculations and more rigorous testing, and allows for savings in material costs (thinner parts may be used). This course is designed to give the participants the confidence and practice for carrying out design and Fabrication and testing for new vessels and also carrying out strength calculations and assessment of the integrity of existing vessels. How to adopt code rules for different types of vessels and with various service conditions will be illustrated with numerous case studies. 

Important code stipulation will be reviewed and discussed collectively with participants so as to address the difficulties and ambiguities they might have encountered during their work.  Each attendee must bring a Laptop computer with Microsoft operating system and Scientific Calculator.

Objectives

By the end of this course delegates will be:

• Familiarize participants with the concepts and technical terms of the codes
• Know the basic concepts of the codes and their design fundamentals
• Understand salient features and differences between Div 1 and Div 2
• Know the design of Shell, Heads, and other pressure parts
• Learn the design of nozzles and nozzle reinforcements
• Design for external pressure and Jacketed vessels
• Design requirements for low-temperature operation
• Discover the fabrication requirements, assembly and welding requirements.
• NDT and Inspection procedures
• How to carry out pressure testing, certification and stamping of Pressure Vessels.
• Introduction to Integrity assessment of in-service vessels.

Training Methodology

This is an interactive course. There will be open question and answer sessions, regular group exercises and activities, videos, case studies, and presentations on best practice. Participants will have the opportunity to share with the facilitator and other participants on what works well and not so well for them, as well as work on issues from their own organizations. The online course is conducted online using MS-Teams/ClickMeeting.

Who Should Attend?

The course is designed for, but not limited to, mechanical, maintenance, and inspection / QAQC professionals who are involved in pressure vessel equipment:

• Design Engineers / Managers
• Mechanical Engineers / Managers
• Maintenance Engineers / Managers
• QAQC Engineers / Managers
• Inspection Engineers / Managers
• Reliability Engineers / Managers

Course Outline

Day 1:

• Introduction to ASME codes
• Structure of ASME Sec. VIII Div. 1
• ASME Code system: Code revisions, Editions, and addenda
• Pressure vessels included in ASME Codes
• Pressure vessels excluding from ASME codes
• Design principles adopted in ASME codes,
• Design rules, How these were derived and arrived at
• Concept of working pressure, design pressure, MAWP
• Allowable stress in ASME design
• Weld joint categories
• Weld joint types
• Concept of weld joint efficiency
• Design of cylindrical and spherical shells under internal pressure
• Static head calculations
• MAWP calculations
• Types of dished heads.
• Selection of dished heads based on pressure / Diameter
• Design of Ellipsoidal heads.
• Design of Torispherical heads
• Design of Hemispherical heads
• Design of conical heads
• Case Studies and examples

Day 2:

• Nozzles and openings, reinforcement of openings
• Adequacy of weld joints for shells and nozzles
• Methods of design optimization, economical compliance.
• Quality Assurance System as per ASME codes
• Materials for pressure parts
• Materials for non-pressure parts
• The requirement of low-temperature service
• Deciding impact test requirement
• Impact test exemptions
• Impact test acceptance criteria
• Fabrication requirements
• Forming and ovality
• Weld fit-ups and mis-alignments
• Weld reinforcements
• Weld – metal build-up
• Weld joints in shells
• Weld joints for nozzle attachments

Day 3:

• Deciding PWHT requirement
• PWHT methods
• PWHT temperature, time
• Heating/cooling rates
• Deciding nozzle orientations
• Requirements of man-ways and inspection openings
• NDT of pressure vessels
• Selection of NDT methods
• Code requirement for radiography
• Acceptance criteria for elongated and rounded indications
• PT and MT requirements
• Acceptance criteria for PT and MT
• Hydrostatic and Pneumatic Tests
• Requirements for Pressure Gauges for the pressure test
• Calculating test pressures, Inspection pressures, pressurization stages, and safety relief valve settings
• Test temperatures, Temperature Corrections
• Vessel stamping and Nameplate
• Introduction to Integrity assessment of in-service vessels

Day 4:

• Introduction to ASME Sec. VIII Div.2
• Salient features of ASME Sec. VIII Div.2
• Basic differences between ASME VIII Div. 1 and ASME VIII Div. 2.
• Allowable Stress Basis and Safety factors for the design
• User’s design specification (UDS)
• Materials Permitted For Construction of Vessel Parts
• Supplemental Requirements for Carbon and Alloy Steels
• Material Test Requirements
• Deciding impact test requirement
• Stress ratio calculations
• Impact test exemptions
• Impact test acceptance criteria
• “Design by Rule” requirements
• Minimum Thickness Requirements
• Weld Category
• Weld Joint Type
• Types of Joints Permitted
• Design Rules for Shells Under Pressure
• Shell Tolerances
• Cylindrical Shells
• Conical Shells
• Spherical Shells and Hemispherical Heads
• Torispherical Heads
• Ellipsoidal Heads

Day 5:

• Fabrication Requirements
• Fitting and Alignment
• Preheating and Heat Treatment of Weldments
• PWHT methods
• PWHT temperature, time
• Heating / cooling rates
• Examination groups for pressure vessels
• Radiography and UT requirement-Volume NDT
• PT and MT requirements-Surface NDT
• Acceptance criteria for NDT
• Pressure Testing Requirements
• Hydrostatic and Pneumatic Tests
• Requirements for Pressure Gauges for pressure test
• Calculating test pressures, Inspection pressures, pressurization stages.
• Test temperatures, Temperature Corrections
• Vessel stamping and Name plate
• Case studies on Div 1 and Div 2