API 939-B : 2002

1 EXECUTIVE SUMMARY
2 REFERENCES
  2.1 Standards, Codes, Publications, and Specifications
  2.2 Other References
3 ACRONYMS
4 INTRODUCTION
  4.1 Background
  4.2 Goal
  4.3 Technical Approach
  4.4 Terminology
5 EXPERIMENTAL PROCEDURES
  5.1 Materials Evaluated
  5.2 Test Panel Configurations
  5.3 Experimental Overview
6 RESULTS AND DISCUSSION
  6.1 Materials Selection
  6.2 Postweld Heat Treatment
  6.3 Temper Bead Welding
  6.4 Blend Grinding/Toe Dressings
  6.5 Local Thin Areas/Grooves
  6.6 Strip Lining
  6.7 Arc Strikes/Low Heat Input Welds
  6.8 Pre-existing Sohic
APPENDIX A - EXPOSURE 1 DETAILED CRACKING RESULTS
APPENDIX B - EXPOSURE 2 DETAILED CRACKING RESULTS
APPENDIX C - EXPOSURE 3 DETAILED CRACKING RESULTS

Covers data relative to the fabrication requirements for 2-1/4 3Cr alloy steel heavy wall pressure vessels for high temperature, high pressure hydrogen services.