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This paper will highlight some of the ongoing advances of the HTHA Joint Industry Project (JIP) to date and provide a preview into upcoming developments in the NDE and FFS codes.
In the past 5 years, Conventional Non-Destructive Examination (NDE) for High-Temperature Hydrogen Attack (HTHA) has been improved with remarkable success. This technology, combined with emerging Fitness-for-Service (FFS) methodologies, has been used in the evaluation of equipment in HTHA service with a higher level of confidence. Some of these evaluations have led to a systematic approach to continued operation, limited service, or retirement decisions not possible just 5 years ago. This paper will highlight some of the ongoing advances of the HTHA Joint Industry Project (JIP) to date and provide a preview into upcoming developments in the NDE and FFS codes. Some case studies will be presented along with recent advances in laboratory methods for HTHA prediction.
Key words: High-Temperature Hydrogen Attack, HTHA, Nelson Curve, Carbon Steel, C-0.5Mo, API RP 941, decarburization, NDT, NDE, non-destructive examination
There is an ongoing Joint Industry Program on the development of high temperature hydrogen attack (HTHA) remaining life assessment and evaluation of non-destructive examination technologies. HTHA model development and assessment examples will be discussed.
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This paper will provide the understanding for the preservation of assets from the effects of internal corrosion.
Background on High Temperature Hydrogen Attack (HTHA). Some current developments in HTHA inspection and mitigation. How several refiners have instituted an HTHA risk management plan for their refineries and the challenges and pitfalls they have encountered