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.
What are the NACE MR0175 requirements for ASME IX P1 group 1 and 2 Material? What are the NACE MR0175 requirements for ASME IX P1 Group 1 and 2 materials? from Ivan Gutierrez on Vimeo. Ivan Gutierrez discusses the NACE MR0175 requirements for ASME IX P1 Group 1 and 2 materials. ASME IX P1 material […]
Interpreting A.2.1.4 in NACE MR0175/ISO 15156-2 Introduction This page addresses a common question regarding the interpretation of A.2.1.4 in NACE MR0175/ISO 15156-2. The question asks if all hardness testing associated with tubular products with an SMYS not exceeding 52ksi in the as-welded condition can be waived if agreed by the equipment user. Answering the Question […]
What Is Carbon Manganese Steel in NACE MR0175? Understanding ISO 15156-2 Annex A.2.1.4 In ISO 15156-2 Annex A.2.1.4, there is a differentiation between “”carbon steel””, “”carbon manganese steel””, and “”low-alloy steel””. While the terms “”carbon steel”” and “”low-alloy steel”” are defined in ISO 15156-1, “”carbon manganese steel”” is not. Definition of Carbon Manganese Steel So, […]
What Are the Criteria for Hic Retesting in NACE MR0175? NACE MR0175 Part 2 Clause B.2.2 offers clear guidance regarding SSC/HIC/SOHIC/SZC retesting. If a single specimen fails to meet the acceptance criteria, the root cause should be investigated. If the source material aligns with the manufacturing specification, two additional specimens may be tested from the […]
Field Experience NACE: Qualification Requirements Introduction In the oil and gas industry, it is important to ensure that materials used in plant operations meet the necessary standards for safety and reliability. One way to qualify a material is through documented field experience, as outlined in NACE MR0175/ISO 15156-1. Clause 8.2: Qualification Based on Field Experience […]
How to Handle Equipment Affected by Changes in Material Requirements in Later Editions of NACE MR0175/ISO 15156-1 Introduction If you’re working in the oil and gas industry, you’re likely familiar with NACE MR0175/ISO 15156-1, a standard that outlines material requirements for equipment used in sour service environments. However, what happens when a new version of […]
Does Only Loading a Component in Compression Meet the Requirements for Exclusion in MR0175 Part 2, Table 1? Answer: The exclusion in MR0175 Part 2, Table 1 applies only to components that are loaded in compression. It does not apply to equipment, assemblies, or aggregate parts that are loaded in compression. However, depending on the […]
Is SAGD Plant Covered in NACE MR0175/ISO 15156-2 Table 1? Question: Is it specified in NACE MR0175/ISO 15156-2 what is included in field facilities and field processing plants, as referenced in Table 1? Would this cover a SAGD plant? Additionally, does the exclusion for below 65 psi apply to all liquid, vapor, or mixed streams […]
Is a Welding Consumable with a Nickel Content of 1.03% Acceptable? Introduction A query was raised about the acceptability of a welding consumable with a nickel content of 1.03%, or if the maximum allowed is 1.00%. This question concerns NACE MR0175/ISO 15156-2 Clause 5.3.1.4. The Response The response was that, for carbon and low-alloy steels, […]
Understanding NACE Hardness Requirements for Parent Metals Someone recently inquired about the requirements specified in NACE MR0175/ISO 15156-2, 7.3.2 “”Parent metals,”” and NACE MR0175/ISO 15156-3, 6.2.1 “”Hardness of parent metals,”” and whether they pertain only to weldment parent metals or if they are also applicable to machined forgings. What the Standards Say The response stated […]
