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10354 Case Studies of Corrosion Failures in Oil Refineries

Product Number: 51300-10354-SG

ISBN: 10354 2010 CP

Author: Gyoung Taek Kim, Hyun Sik Hwang, Sung Lyong Oh, Byong Mu Kim

Publication Date: 2010

$20.00

This paper describes three corrosion case histories caused by overconfidence and lack of thorough understanding of the corroding systems. 1. Exchanger tube failure. 2. Hydrogen induced cracking. 3. Inappropriate mixing of process streams.

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51316-7233-A New Method for Prioritizing Equipment in HTHA Service for Inspection and Replacement

Product Number: 51316-7233-SG

ISBN: 7233 2016 CP

Author: Jeremy Staats

Publication Date: 2016

$20.00

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

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Material Testing and FFS Modelling for HTHA of Less-Common Alloys: C-0.3Mo

Product Number: 51324-21142-SG

Author: Jorge Penso; Nathaniel Sutton; Brandon Rollins

Publication Date: 2024

$40.00

Tremendous attention has been devoted to understanding the behavior of common engineering alloys in high temperature hydrogen service. Nelson curves from API RP 9411 are available for the alloys most widely used in HTHA service. However, the aging international fleet of equipment in hydrogen service, across the refining, petrochemical and fertilizer industries means that in-service equipment constructed from less-common alloys must sometimes be evaluated for HTHA. The authors are involved with an 10-year joint industry project studying HTHA. One major outcome of this project is a volumetric HTHA damage FFS model which incorporates stresses from methane pressure within the material into an MPC Omega Multiaxial damage formula. A crack growth model using the fracture mechanics parameter C* (commonly used in creep crack growth)12 is also under development. These two are related in that the C* crack growth law parameters can be calculated utilizing the MPC Omega material creep properties. With sufficient creep data for an uncommon alloy like C-0-.3Mo, lot centered MPC Omega creep properties can be regressed. Such data have been compiled by the authors and resulting Omega creep properties are reported. These creep properties, along with other material properties, are used in the HTHA damage progression and the C* crack growth models. Model predictions using this approach are compared to historically available ex-service HTHA data from API RP 9411 for alloys with Mo contents between that of carbon steel and C-0.5Mo. Selective testing (creep and crack growth testing in both air and hydrogen environments) is in-progress to verify the FFS approach.

Products tagged with 'htha'

10354 Case Studies of Corrosion Failures in Oil Refineries

51316-7233-A New Method for Prioritizing Equipment in HTHA Service for Inspection and Replacement

Material Testing and FFS Modelling for HTHA of Less-Common Alloys: C-0.3Mo

Association for Materials Protection and Performance