• High Temperature Hydrogen Attack

  • Our Introduction

    AMCO Integrity Pty. Ltd is an independent company registered in Australia. It is a highly innovative engineering and consulting company engaged in state of the art R&D and product development in the energy sector, including renewable and small scale energies, and in high temperature plant issues in general…

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  • EDSE Technology

    The Electric Discharge Sampling Equipment (EDSE) was developed by our UK based partner in collaboration with international partners to aid in the condition and life assessment of components. The sampling of in-service components has long been seen as an effective way of determining actual material properties and sub-surface material

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  • Portable SFM Technology

    The Portable Scanning Force Microscope (Integrity-Scanning Force Microscope) has been developed for early stage damage detection such as creep cavitation (especially in P91 & P92 steels) which will not be found using traditional replication techniques.…

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  • Obikou

    Obikou is an on-site service for power, process and other high temperature plant and has shown to achieve creep life extension by a factor of about 4. It simply involves quickly reinforcing a potentially vulnerable or creep damaged pipe with multiple layers of thin high-temperature alloys strip that is wound/wrapped around a pipe thus halting/ reducing the development of creep damage….

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  • Research & Development

    AMCO has excellent expertise through its in-house R&D, plant service/technical
    consulting and project management experience and links with plant manufacturers,
    plant operators, service providers and researchers from around the world.

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High-temperature hydrogen attack occurs in steels that operate above a certain pressure and temperature in a hydrogen environment.

High temperature hydrogen attack (HTHA) is a phenomenon which occurs within some industrial processes when the presence of hydrogen, subjected to high temperature and pressure, makes plants and systems prone to damage. This reaction can cause an industrial plant to suffer serious failure, which may lead to both expensive repairs and loss of production.

HTHA can be detected in a number of ways, but it is considered that with the complexity of HTHA a more structured approach is necessary. A series of procedures have been developed containing the latest advances in ultrasonic imaging and data processing techniques in order to achieve a greater level of confidence in both HTHA inspection results and inspection repeat-ability.

At AMCO Integrity Pty Ltd with a full understanding of both the phenomena and the methods to assess it, we feel our HTHA service will help minimise your risk. Our experienced team and consultants are able to efficiently evaluate the presence of hydrogen damage to prevent failure of critical plant equipment. The information recorded can be later on analysed allowing fitness for service calculations or condition assessment.

The Nelson curves are the set of graphs that have been widely used to delineate the safe operating conditions. Recent reports have found several incidents where HTHA occurred in the ‘safe’ region of the Nelson curves. In light of these findings, many companies are reexamining their approach to HTHA detection and analysis.

Need HTHA consultancy?

From a metallurgical point-of-view, high-temperature hydrogen attack (HTHA)  is a incredible example of the mobility and power of tiny hydrogen particles in steel structures.  HTHA can have serious consequences and has recently been cited in a number of dangerous failures, including several fatalities. The difficulty of HTHA is that it hides from most traditional inspection techniques until significant damage has occurred.

Our team includes hydrogen experts with skill at finding and evaluating the effects of HTHA.