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 material and welding considerations for piping and pipelines in hydrogen gas transport according to ASME B31.12? Introduction ASME B31.12 provides guidelines for the design and maintenance of piping and pipelines used in gaseous and liquid hydrogen service. It covers various aspects, including material selection, welding practices, and maintenance routines. Answer ASME B31.12 […]
What are the recommended maintenance practices for piping and pipelines in hydrogen gas transport according to ASME B31.12? Introduction ASME B31.12 provides guidelines for the maintenance of piping and pipelines used in hydrogen gas transport. It emphasizes the importance of robust maintenance routines and corrosion control measures. Answer ASME B31.12 recommends the implementation of a […]
What are the burial and reuse requirements for onshore pipelines in hydrogen service according to ASME B31.12? Introduction ASME B31.12 addresses the requirements for the burial depth of onshore pipelines used in hydrogen service and provides recommendations for the reuse of existing pipelines. Answer ASME B31.12 specifies a minimum depth of cover for buried mains […]
What does the EIGA IGC Doc 121/14 recommend for the safe operation of metallic hydrogen pipelines? Introduction The EIGA IGC Doc 121/14 “Hydrogen Pipeline Systems” provides guidelines for the safe operation of metallic transmission and distribution piping systems carrying pure hydrogen and hydrogen blends. It offers valuable recommendations for those involved in working with these […]
What are the material requirements for carbon steels used in hydrogen pipeline systems according to Doc 121/14? Introduction Doc 121/14 outlines the material requirements for carbon steels used in hydrogen pipeline systems. It provides recommendations based on the strength and hardness properties necessary for safe hydrogen gas transport. Answer According to Doc 121/14, carbon steel […]
What are the considerations for maintaining the surface condition of valve components in hydrogen pipeline systems according to EIGA Doc 121/14? Introduction EIGA Doc 121/14 provides guidance on maintaining the surface condition of valve components in hydrogen pipeline systems. It emphasizes the importance of appropriate heat treatment and surface treatment to ensure the integrity of […]
What are the existing valve design standards and leak testing methods for hydrogen gas transport? Introduction This FAQ provides information on the valve design standards and leak testing methods specifically relevant to hydrogen gas transport. It highlights the standards used for evaluating valve performance and leakage rates in hydrogen service. Answer In the context of […]
What factors can affect leakage rates in valves for hydrogen gas transport? Introduction This FAQ discusses the factors that can impact leakage rates in valves designed for hydrogen gas transport. It highlights key considerations that influence valve tightness and performance in the context of hydrogen gas transport. Answer Several factors can influence leakage rates in […]
Acceptable Hardness of CA6NM under NACE MR0175/ISO 15156 This page addresses an inquiry regarding the acceptable hardness of CA6NM under NACE MR0175/ISO 15156. The inquiry notes that earlier editions of the NACE standard had a note stating that the maximum permissible value for CA6NM is 255 BHN, but this statement is not included in the […]
Approved Heat Treatments for CA6NM and F6NM under NACE MR0175/ISO 15156-3 This page provides clarification on the approved heat treatments for CA6NM and F6NM under NACE MR0175/ISO 15156-3, as listed in Table A.18. Are Other Heat Treatments Allowed? The inquiry asks if other heat treatments are allowed as long as they do not exceed the […]
