Looking for detailed clarification on requirement of ASME B
Apr 13, 2018 · Above is the brief about ASME B31.12 Question: As i believe we normally use B 31.3 for process piping irrespective of fluid service.Did any one come accross the requirement of using B31.12 instead of 31.3 from client side? I found that there are differences in allowable stress values as well as compare to B31.3.
High pressure Hydrogen Pipeline ASME B31.12 1 - Eng-Tips
Jan 23, 2018 · According to ASME B31.12, this pressure level is excluded for pipeline design. However, in Table GR-2.1.1-2, there's a note that states: "The maximum operating pressure (MOP) shall not exceed 21 MPa (3,000 psi) for all materials unless otherwise noted, provided the material is deemed suitable as demonstrated by tests in hydrogen, such as per ...
ASME B31.12 & Mf (performance factor) - Eng-Tips
Dec 21, 2024 · thread292-487444 ASME B31.12 [2023], Foreward : "Material performance factors have been included to account for adverse effect of hydrogen gas on the mechanical properties of carbon and low alloy steels operating within the hydrogen embrittlement range". "Many material included in ASME B31.3...
B31.12 - Mf Factor for Stainless Steel Piping - ASME ... - Eng-Tips
Apr 15, 2009 · Good Afternoon, We are working with some piping that will be containing Hydrogen at 2400 psi. The piping will be 316 stainless steel. We dont see any clear direction in the code text as to what value to use for Mf for stainless steel. Table IX-5C contains values for low and intermediate alloy...
Differences: B31.3 versus B31.12 1 - Eng-Tips
Jun 5, 2009 · Last year (2008), ASME B31.12 "Hydrogen Piping and Pipelines" was released. Prior to this pipe spec, ASME B31.3 was generally the go-by for hydrogen piping systems in the US. The purpose of this thread is to identify differences between B31.3 and B31.12 to help bring folks like myself up to speed on B31.12.
Welding difference between B31.3 and B31.12 - Eng-Tips
Dec 15, 2021 · Hello All, I have a question about the B31.3 and B31.12. I would like to know the mainly difference concerning the welding ? Are there any supplementary requirements with B31.12 ? (about WPS/PQR/fabrication) Thanks a lot for your support, Best Regards
Closure welds in B31.12 Hydrogen Piping 1 - Eng-Tips
Dec 13, 2010 · I know there is a stipulation about a closure weld or weld that can be 100% X-rayed in lieu of hydrotesting in B31.3 process piping; however, is there any similar stipulation for a closure weld in B31.12 hydrogen piping?
ASME Acceptance criteria - ASME (mechanical) Code Issues - Eng …
Aug 20, 2013 · OK im new to this and im wondering if someone could explain to me in the most basic laymans terms the following ASME acceptance criteria. If i was looking for what is a defect in 25mm thick pipe that is 12 inch. ASME B31.12 Table 2 Flaw acceptance criteria 25mm ≤ t 64mm Aspect Ratio - Surface Flaw - Subsurface Flaw a/l a/t a/t
ASME B31.12 Hydrogen Piping -- Reason for 0.5% Nickel Limit
Feb 11, 2010 · thread330-301517 My specific enquiry is in the header. Am I correct in thinking the limit of 0.5% Nickel carries on the tradition started by NACE MR0175? What is the current state of the science (or opinion) with respect to Nickel-bearing low …
High pressure Hydrogen Pipeline ASME B31.12 - Eng-Tips
Feb 20, 2024 · According to ASME B31.12, this pressure level is excluded for pipeline design. However, in Table GR-2.1.1-2, there's a note that states: "The maximum operating pressure (MOP) shall not exceed 21 MPa (3,000 psi) for all materials unless otherwise noted, provided the material is deemed suitable as demonstrated by tests in hydrogen, such as per ...