At OGC Energy we help the energy industry with finding answers to some of their most difficult questions. We have created this section hoping that you will find answers to some of the most common questions in the following areas:
If you require technical support in metallurgy, corrosion, or welding; or if you need assistance meeting the requirements of ANSI/NACE MR0175/ISO 15156 then contact our team, we are here to help you.
ISO 15156-3 Section 7.2: Documents Required for Traceability NACE MR0175 Traceability Requirements Question: In accordance with ISO 15156-3, Section 7.2 on marking, labeling, and documentation, it is mentioned that materials complying with ISO 15156 should be made traceable. While the section acknowledges that appropriate documentation can ensure acceptable traceability, it does not provide a specific […]
Welding Dissimilar Metals for Pressure Sensing Devices: Meeting Hardness Requirements This web page features a question and answer related to welding dissimilar metals for pressure sensing devices. The question seeks clarification on how to apply the hardness requirements when two materials are welded directly together without the use of a third weld-filler metal. Meeting Hardness […]
Is Flame Spray Build-Up of Stainless Steel Acceptable According to NACE Standards? This web page presents a question and answer related to the use of flame spray to build up the surface of 316 stainless steel housings with an oversize machined bore. The Question Is the process of applying stainless to stainless for remachining to […]
We have a full article on the latest revision of NACE MR0175 2015, make sure you read the full article as it addresses austenitic stainles steels. Question: NACE MR0175/ISO 15156-3: 2009(E) Table A2 & NACE MR0175/ISO 15156-3: 2009/Cir.2:2013(E), Table A2 As long as the partial pressure of H₂S is below 15 psi and Flowing medium […]
Welding Requirements for Welded and Annealed Stainless Steel Tubing Introduction This webpage provides answers to questions related to the welding requirements of welded and annealed tubing made from stainless steel sheet material that qualifies under Section A.2 of NACE MR0175/ISO 15156-3. The tubing is formed, longitudinally welded without filler metals using an automatic arc welding […]
Carburizing in ISO 15156 This web page provides information regarding carburizing in ISO 15156. Currently, carburizing is not permitted except in conjunction with the exclusions listed in Table 1 of ISO 15156-2. These exclusions are related to specific equipment that is loaded in compression and equipment that is outside the scope of ISO 15156. The […]
Verification of Maximum Hardness Requirement for Parent Materials in ISO 15156 Part 3, Table A.2 Introduction This page provides an answer to a common question regarding the verification of the maximum hardness requirement of parent materials selected for site conditions as per Technical Circular 3 of ISO 15156 Part 3, Table A.2. The selected parent […]
Which Temperature to Consider Against Column 2 of Table A.2 for NACE MR0175/ISO 15156-3? Introduction This page presents a question about which temperature to consider against Column 2 of Table A.2 for NACE MR0175/ISO 15156-3: 2009(E) Table A2 & NACE MR0175/ISO 15156-3: 2009/Cir.2:2013(E), Table A2. The answer provided confirms the temperature column in Table A.2 […]
Understanding the Limitations of Austenitic Stainless Steel in Sour Gas Treatment Units Addressing the Challenge of Chloride Content in Gas Streams This page provides a Q&A section that addresses the limitation of austenitic stainless steel application in sour gas treatment units as per NACE MR0175/ISO 15156. This standard has been implemented for design purposes in […]
Question on the Applicability of NACE MR0175/ISO 15156 for 316 Stainless Steel in Sour Service Applications Introduction This page provides a Q&A section that addresses the use of 316 stainless steel for sour service application under the restrictions imposed by NACE MR0175/ISO 15156. The question pertains to the applicability of the standard for non-stressed vessel […]
