Ep. 5 - Cracking the U2G Code

On the Pressure Beast podcast, James and Jason explain when ASME Section VIII, Division 1 requires using U-2(g) and how to choose between an FEA and other reference codes, noting U-2(g) applies when the Code lacks design rules (e.g., gusset-stiffened nozzles with agitator loads and tangential nozzles with long/short chord openings).

They outline that Div. 1 FEAs are guided by Appendix 46 and leverage Div. 2 methods while still using Div. 1 stress values, and emphasize you cannot use FEA to bypass existing Div. 1 design rules. They discuss proof testing realities, including dimple-jacket cases where Code language about backing plates can force proof tests, and warn that proof-test MAWP must be reduced for elevated-temperature service using Appendix K.

They also cover Canada CRN requirements (Appendix J documentation and added proof-test/UG-101 expectations) and note varying international registration rules.

00:00 Welcome and Topic Setup00:33 When U2G Is Required01:34 Common U2G Use Cases02:12 FEA Basics and Appendix 4603:28 Using U2G to Optimize Designs05:16 Proof Testing Stories and Reality06:45 Dimple Jackets and Code Traps08:20 Code Revisions and Temperature Effects09:25 CRN Canada Requirements11:28 Global Compliance and Politics12:53 Wrap Up and Contact