Description
This Division of Section VIII provides requirements applicable to the design, fabrication, inspection, testing, and certification of pressure vessels operating at either internal or external pressures exceeding 15 psig. Such vessels may be fired or unfired. This pressure
may be obtained from an external source or by the application of heat from a direct or indirect source, or any combination thereof. These rules provide an alternative to the minimum requirements for pressure vessels under Division 1 rules. In comparison the Division 1, Division 2 requirements on
materials, design, and nondestructive examination are more rigorous; however, higher design stress intensify values are permitted. Division 2 rules cover only vessels to be installed in a fixed location for a specific service where operation and maintenance control is retained during the useful
life of the vessel by the user who prepares or causes to be prepared the design specifications. These rules may also apply to human occupancy pressure vessels typically in the diving industry. Rules pertaining to the use of the U2 and UV ASME Product Certification Marks are also included.
Careful application of this Section will help users to comply with applicable regulations within their jurisdictions, while achieving the operational, cost and safety benefits to be gained from the many industry best-practices detailed within these volumes. Intended for manufacturers, users,
constructors, designers and others concerned with the design, fabrication, assembly, erection, examination, inspection and testing of pressure vessels, plus all potential governing entities.
What are the key changes for ASME Section VIII Div 2 2023?
- Part 2 has been revised to remove Certifying Engineers for Class 2 Design-by-Rule (DBR) applications. This action will eliminate conflicts with international engineering registration requirements for the majority of applications.
- Part 4.18 has been realigned and revised for consistency between the heat exchanger types. The shell and channel coefficients have been revised and are now based on the mean diameter instead of the inside diameter, which is consistent with PTB-7.
- Paragraph 4.2.5.7, Category F, Locations, has been added in order to assign a common joint category to tube-to-tubesheet welds
- Paragraph 5.4, Protection against failure from buckling, has been completely re-written and a new table of load cases, Table 5.8, has been added.
- Paragraph 5.5.2.4 and Table 5.10 have been revised and now provide a quick-and-simple method to screen components in cyclic service, eliminating the need for a full-fatigue analysis
- Revised the “PRT” designator to “PRT VIII-1” throughout ASME Section VIII Div 2.
