Corrosion Resistant Alloys for Oil and Gas Production: Guidance on General Requirements and Test Methods for H2S Service, Volume 69, proposes test methods for assessing the environmental cracking resistance of Corrosion Resistant Alloys (CRAs) and provides a standard methodology for establishing the environmental cracking resistance of CRAs in H2S service. This revised volume discusses changes to the procedure for stress loading Bent Beam specimens, C-ring specimens, ISO 15156/NACE MR0175, and associated corrigenda.
- Includes procedures and background knowledge on H2S cracking tests
- Presents a discussion of H2S related cracking in corrosion resistant alloys
- Proposes test methods for assessing the environmental cracking resistance of CRAs
- Provides extensive background information relating to the use of CRAs in oil and gas production
- Includes a more accurate formula for calculating the strain to be applied for loading four point bend or "C" ring samples prior to testing
Table of Contents
1. Terminology and Definitions 2. Standards Referred to in this Document 3. Introduction 4. Scope 5. Objective 6. Overview of Requirements for Selection and Qualification 7. General Principles and Limitations of Proposed SSC/SCC Tests 8. SSC/SCC Test Procedures
Appendix 1. Mechanisms of Environmental Cracking 2. The Source, Nature and Analysis of Produced Water in Oil and Gas Production 3. Titanium Alloys-Limitations of Use 4. Reference Environments for Comparative (or Ranking) SSC/SCC Testing that is not Application Specific 5. Normalisation of Slow Strain Rate Test Ductility Measurements 6. Autoclave testing of CRAs 7. Stressing of Bent Beam Specimens and C-Rings SUPPLEMENTARY APPENDIX SI: Test Methods for the Evaluation of the Corrosion Performance of Steels and Non-Ferrous Alloys in the System: Water-Hydrogen Sulphide-Elemental Sulphur
