ASME Section IX-2023

What are the key changes for 2023 BPVC Section IX (ASME BPVC-IX)?

• QG-108 has been revised to remove the 1962 provision and clarify the status of old PQRs when writing a WPS to a later edition.
• Definition of “initial heating interfacial pressure” was added was added to QG-109.2 and previous omissions of “sidewall-fusing” was added to pertinent definitions within QG-109.2.
• Table QW-264 has a new requirement that includes carbon equivalent limits for applicable steel alloys, when laser welding is performed, in order to address the increased risk of any cracks occurring.
• A new paragraph in QW-403 also includes the new variable for a change in base metals.
• Table QW/QB-422 has been revised to include: Weld metals based on SFA classification: SFA-5.9, SFA-5.18, & SFA-5.28; An explanatory note-QW-424.3; Base metal specification and grades for IRAM-IAS U 500-42, an Argentinian standard for structural use of hot rolled carbon steel sheets.
• Nonmandatory Appendix L has been revised to further clarify the qualification requirements for welders and welding operators.

View presentation of key changes to the 2023 BPVC (PDF)

Careful application of ASME Section IX 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.