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ASME B31E, H & J Ongoing Developments
Tony Paulin
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In this interview, Tony Paulin, original creator of Caesar II, NozzlePRO, FEPipe, owner of PaulinLabs LLC and respected member of the ASME B31 MDC, B31E & B31J committees, shares his insights into the ongoing developments in ASME B31E, B31H, B31J and Appendix W of the ASME B31 code.
Tony shares insights from decades of experience in piping stress analysis, code committee work, and software development and fatigue data collection, providing engineers with a behind-the-scenes look on current developments and how ASME piping codes continue to evolve.
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Engineering Insights
Stay updated with practical engineering insights drawn from new articles, learning materials, and expert discussions.
We occasionally share concise explanations covering topics such as piping stress analysis, pressure vessel calculations, fatigue assessment, engineering codes (ASME & EN), and practical modelling approaches.
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Topics Covered
00:00 – Introduction & Tony’s Background
(Caesar II, PRG, NozzlePRO, FEPipe, piping engineering software)
00:45 – Tony’s ASME B31 Committee Work
(B31H, B31E, Appendix W, B31J code development)
00:59 – Mailing List Announcement
(Exclusive access to Parts 2 & 3)
01:41 – B31H: Burst Testing & Pressure Capacity
(Hoop stress, plastic collapse, FEA scaling)
03:20 – B31E: Seismic & Dynamic Loads
(Water hammer, strain-limited design, seismic engineering)
04:20 – Appendix W: Updated Fatigue Curves
(Fatigue testing, S-N curves, high-cycle vs low-cycle fatigue)
05:55 – B31J: SIFs, Flexibility & Sustained Indices
(Stress intensification factors, branch connections)
07:53 – How Code Updates Impact Designers
(Support spacing, routing, conservatism reduction)
09:55 – Global Testing Improving the Codes
(Test data from India, Japan, Korea; experimental validation)
11:35 – Updated Fatigue Equations & Allowables
(High-cycle fatigue rules, fewer supports, designer benefits)
13:00 – Reliability, Risk & Specialty Components
(Mechanical couplings, high-reliability piping systems)
14:10 – FEA Use in B31J & Component Testing
(Nonlinear FEA, collapse prediction, test replication)
15:50 – Mailing List Reminder
(CTA for advanced piping engineering insights)
16:23 – LRFD & Partial Safety Factors
(Reliability-based design, load uncertainty, code philosophy)
17:40 – Ratcheting, Cyclic Loads & Bree Diagram
(Membrane stress + cyclic loading, plastic strain limits)
20:00 – Timeline for Upcoming Code Updates
(B31E release planning, upcoming ASME revisions)
22:00 – Unified Fatigue Curve (Appendix W)
(Modern fatigue data, updated slopes, unified S-N approach)
24:00 – Global Fatigue Data & Markl Curve Fixes
(Filling gaps in Markl’s work, new fatigue datasets)
28:00 – Alignment Across B31.3 & B31.1
(Consistent equations, I-factors, code harmonization)
32:46 – Component Challenges & Failure Testing
(Mechanical couplings, tees, manufacturing variation, burst tests)
43:07 – Pipe Thickness Variation & Burst Testing
(Seamless vs welded pipe, circumferential thinning, predicting failures)
48:00 – Post-Event Strain Checks & Acceptable Limits
(Thickness inspection, m2 factor, assessing water hammer/earthquake damage)
50:30 – Material Variability & Safety Factors
(UTS vs temperature, minimum code values, reliability margins)
52:25 – Closing & Mailing List CTA
(Free workshop seats, exclusive technical content)