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.
Title: Using Nodular Iron Screw Compressors for NACE MR0175 Compliance Introduction This page addresses the question of whether nodular iron screw compressors supplied with ASTM A 536 Grade 60/40/18 are a suitable alternative to ferritic ductile iron to ASTM A 395 for compliance with NACE Standard MR0175. ISO Maintenance Panel’s Role The answer clarifies that […]
ISO 15156 Maintenance Panel Inquiry #2012-10 Introduction This page provides information on a request made by the UK delegation to the ISO 15156 Maintenance Panel (WG 7) during the 2012-09-19/20 ISO/TC 67 plenary meeting in Rio. Specifically, the request pertains to ISO 15156-2 and its reference to the British publication OTI 95 635, which is […]
Update on ANSI/NACE MR0175/ISO 15156 This page provides an update dated 2017-12-22 about ANSI/NACE MR0175/ISO 15156. A Technical Circular has been published which is relevant to external bolts. The page recommends following a link related to part 2 A.2.2.4 Bolting and Fasteners, available at https://ogcenergy.com/nace-mr0175-iso-15156-technical-circulars-for-part-1-and-2-published-2017-12-22/. Bolt Compliance to NACE MR0175 The page clarifies that bolt […]
NACE MR0175/ISO 15156 Part 2, Annex A: Manufacturer’s Query on Hardness Limits for Sour Gas Service Introduction This page provides a question and answer related to NACE MR0175/ISO 15156 Part 2, Annex A. The question is about a clarification needed for a manufacturer of temporary pipe work, flow lines, etc. for sour gas service in […]
NACE MR0175/ISO 15156 Part 2, Annex A: Can Ductile Iron ASTM A 536 Be Used for Pressure-Containing Parts? Introduction This page provides a question and answer related to NACE MR0175/ISO 15156 Part 2, Annex A. The question concerns the use of ductile iron ASTM A 536 for pressure-containing parts, specifically, valve stems, since it is […]
NACE MR0175/ISO 15156 Part 2, Annex B, Table B.3 Acceptance Criteria for HIC Test This page provides a question and answer related to NACE MR0175/ISO 15156 Part 2, Annex B, Table B.3 concerning the acceptance criteria to be taken into account for the HIC test. The question references NACE Standard TM0284, Paragraph 4.2.1, and asks […]
What is a Corrosion-Resistant Alloy (CRA)? This page offers a question and answer related to the definition of “”corrosion-resistant alloy”” (CRA) in Part 3 of MR0175/ISO 15156. The Question: What is the definition of CRAs, does it include Fe-based alloys, and how does it relate to “”other alloys”” mentioned in the standard? The Answer: According […]
Understanding Exposure Temperature in NACE MR0175/ISO 15156-3:2009(E) If you’re working in the oil and gas industry, you may have come across NACE MR0175/ISO 15156-3:2009(E), which sets out requirements for materials used in sour service environments. One key term in this standard is “”exposure temperature,”” but what does it mean? The Meaning of Exposure Temperature According […]
Interpreting NACE MR0175/ISO 15156 Table A.2 Maximum Hardness Requirements for Austenitic Stainless Steels This page provides answers to a common question regarding compliance with NACE MR0175/ISO 15156, Table A.2, and the maximum specified hardness requirements for austenitic stainless steels. The question revolves around whether surface hardness values above the maximum specified in MR0175 are compliant, […]
This appears to be a shortcode for a web page Page identifier: mp2014-03 It’s likely that this shortcode refers to a webpage on the same website. However, without access to the website’s code, it’s difficult to determine the specific content of the page.
