Session: CS-02-01 Hydrogen Effects on Material Behavior for Structural Integrity Assessment (Joint with MF-2) - Applying ASME Codes to Material Selection

Paper Number: 107120

107120 - Comparison of the Fatigue Life in Hydrogen Environment Using ASME Section VIII, Division 3 and ASME Section VIII, Division 2 

In recent years, hydrogen gas has been gaining favor as a valuable energy transition option to help reducing carbon emissions. This transition requires hydrogen storage and distribution infrastructure with consideration of failure modes such as hydrogen embrittlement that is typically not a concern for other fuel types. ASME BPV Section VIII, Division 3, Article KD-10 has special requirements for vessels in hydrogen service.  Although Article KD-10 has been in existence since the release of 2007 Edition of the Code, few studies have been done to compare conventional ASME Section VIII, Division 2 fatigue evaluation in air environment with ASME Section VIII, Division 3 fracture mechanics-based evaluation in gaseous hydrogen environment. This paper presents a comparison study of the calculated fatigue life using these two methods (S-N in air vs fracture mechanics in hydrogen) for different crack-like flaw sizes with the consideration of the current rules in both ASME Section VIII Division 3 and API 579 / ASME FFS-1 Codes. Furthermore, a comparison is presented between fatigue crack growth rate models that utilize ASME B31.12, Code Case 2938, and a Piece-wise Paris Equation, which has been developed to align with experimental data. The comparison in this paper utilizes fatigue and fracture data of material in hydrogen service published by Sandia National Laboratories and various authors.

Presenting Author: Koray Kuscu CB&I - McDermott

Presenting Author Biography: Dr. Koray Kuscu received his BS, MS and Ph.D. degrees in Mechanical Engineering. He started his career as a process engineer after receiving his bachelor's degree and worked in various industrial natural gas - LPG conversion station and industrial HVAC process system designs. During his graduate studies, his interests shifted towards plate and shell theory, structural dynamics and developing constitutive finite element theory for composite plates with smart materials. Before his graduation from University of Illinois at Chicago in 2005, he started working as an FEA analyst in the oil and gas industry and particularly in cryogenic LNG tanks and pressure vessels. Later, he resumed roles of design engineer, project engineer, design manager and senior principal engineer as he has been designing AWWA vessels, API 620 LNG tanks, ASME Section VIII pressure vessels, Section III Nuclear containment vessels and nuclear components. He is a licensed professional engineer in five US states. He regularly participates in ASME BPV Code Committee Meetings with the aim of contributing to ASME Codes and Standards.

Authors:

Koray Kuscu CB&I - McDermott
Mandeep Singh CB&I - McDermott