If there is a criticism to be leveled at Section IX, it is that it can be overly prescriptive regarding administrative details while occasionally lagging behind emerging technologies. For example, the qualification requirements for newer processes like Laser Beam Welding (LBW) or additive manufacturing (3D printing of metals) have required significant updates to catch up with industry innovation. While the 2021 and 2023 editions have made strides here, the code is inherently conservative, prioritizing proven safety over cutting-edge convenience.
Additionally, the interplay between Section IX and other ASME sections (like Section I for Power Boilers or B31.3 for Process Piping) can be confusing. Section IX tells you how to qualify, but the other sections tell you what to qualify against. New engineers often struggle to navigate this cross-referencing web. welding standard asme
A WPS is a written document that provides direction to the welder. It includes: If there is a criticism to be leveled
Without an approved WPS, no production welding can occur under the welding standard ASME. Without an approved WPS, no production welding can
| Variable | Symbol | Change Requires Requal? | |----------|--------|--------------------------| | F-number | QW-404.12 | YES | | A-number | QW-404.5 | YES | | Thickness (T) | QW-403.6 | YES | | Preheat (reduction) | QW-406.1 | YES | | PWHT (adding/removing) | QW-407.1 | YES | | Electrode diameter (beyond range) | QW-404.13 | YES | | Amperage (minor change) | – | NO |