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Paulin Research Group

From a Moving-Ground Signal to a Structural Answer: The Connection PRG Provides

A monitoring layer can tell you the ground near an asset is changing. That observation, on its own, is not a pipe stress result, a tank shell stress result, a nozzle load, or a fitness-for-service conclusion. Getting from one to the other takes...

Buried Pipelines and Code: Where Stress Checks Fall Short

A buried pipeline can clear its code stress check and still sit in ground that keeps moving after the report is filed. The check confirms the design...

When WRC Methods Aren't Enough: WRC 107, 297, and 537 vs. FEA for Nozzle Loads

When was the last time you ran a WRC calculation and fully trusted that it captured what was happening at the nozzle-to-shell junction?

Code SIF or FEA SIF? How FEA fills the SIF gaps For Unlisted B31.3 2024 Components

Many piping systems include components that don’t fit squarely into the standard fittings covered by the B31J-2023 SIF tables. Large branch...

B31.3 vs. B31.1: Fatigue and Stress Range Changes in the 2025 Piping Codes

For years, ASME B31.1 and B31.3 have shared a broadly similar fatigue philosophy, even though each Code evolved from its own test sets, material...

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ASME Section VIII, Division 2 Part 5—Updated Creep Guidelines for 2025: What Engineers Need to Know

The 2025 Edition of ASME Section VIII, Division 2 brings a number of updates to high-temperature design practices. The changes to Part 5 expand the...

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How Stress Error Estimates Are Calculated in Finite Element Analysis Software

Stress error estimates are commonly used in finite element analysis to indicate how stress varies within and between elements. These estimates do not...

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Evaluating Mesh Quality with Finite Element Analysis

Mesh quality is a key consideration in finite element analysis, particularly when evaluating localized stresses near geometric discontinuities. To...

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ASME UG-44(b) and Code Case 2901-1: Navigating External Loads on Flanges

ASME Section VIII, Division 1 requires consideration of external loads under UG-22; but for decades, Division 1 did not offer a procedure for...

Addressing Complex Behaviors in LNG and Thin-Wall Piping Systems

In the LNG industry and other applications, piping systems encounter conditions not always addressed directly by design codes. High d/t ratios and...