Inspectioneering

Integripedia Topic
API RP 934 - Materials and Fabrication of Heavy Wall Pressure Vessels for High-Pressure Hydrogen Ser

Explore this topic

API RP 934, Materials and Fabrication of 2 1/4Cr-1Mo, 2 1/4Cr-1Mo-1/4V, 3Cr-1Mo, and 3Cr-1Mo-1/4V Steel Heavy Wall Pressure Vessels for High-temperature, High-pressure Hydrogen Service, is a recommended practice developed and published by the American Petroleum Institute (API). It covers the material and fabrication requirements for heavy wall pressure vessels used in petrochemical and chemical refineries to process hydrogen-containing fluids at high temperatures. Specifically those vessels constructed to the standards put forth by the ASME Boiler and Pressure Vessel Code, Section VIII.

API RP 934 is composed of five separate sections: API RP 934 A, C, and E and API TR 934 B and D. Each section covers vessels that are made of different steels or that run in different temperature ranges. These RPs and TPs can be applied when either constructing new vessels or modifying already existing pressure vessels. Along with materials and fabrication, these RPs also discuss things such as damage mechanisms, proper wall thickness, and weld overlays.

The First Edition of Section A was originally published in December 2000, with the most recent edition published in May 2008. The other sections are all in their first edition and were published at various times from 2008 to 2011. Two addendums to Section A were published in February of 2010 and March of 2012.

Related Topics

Relevant Links

Topic Tools

Share this Topic

Contribute to Definition

We welcome updates to this Integripedia definition from the Inspectioneering community. Click the link below to submit any recommended changes for Inspectioneering's team of editors to review.

Contribute to Definition
Articles about API RP 934 - Materials and Fabrication of Heavy Wall Pressure Vessels for High-Pressure Hydrogen Ser
    News related to API RP 934 - Materials and Fabrication of Heavy Wall Pressure Vessels for High-Pressure Hydrogen Ser

      Inspectioneering Journal

      Explore over 20 years of articles written by our team of subject matter experts.

      Company Directory

      Find relevant products, services, and technologies.

      Talent Solutions

      Discover job opportunities that match your skillset.

      Case Studies

      Learn from the experience of others in the industry.

      Integripedia

      Inspectioneering's index of mechanical integrity topics – built by you.

      Industry News

      Stay up-to-date with the latest inspection and asset integrity management news.

      Blog

      Read short articles and insights authored by industry experts.

      Expert Interviews

      Inspectioneering's archive of interviews with industry subject matter experts.

      Event Calendar

      Find upcoming conferences, training sessions, online events, and more.

      Downloads

      Downloadable eBooks, Asset Intelligence Reports, checklists, white papers, and more.

      Videos

      Watch educational and informative videos directly related to your profession.

      Acronyms

      Commonly used asset integrity management and inspection acronyms.