P91/P92 Steels – Fabrication, Welding, Heat Treatment, Quality Check, Damage Mechanisms, Plant Experience & Integrity/ Life Assessment – Dates 13 – 14 July 2021

This is for P91/P92 Steels – Fabrication, Welding, Heat Treatment, Quality Check, Damage Mechanisms, Plant Experience & Integrity/ Life Assessment

2-Days online LIVE Training Course

Acronym: P91/P92 Course

This event is due to take place On-Line (From London) Dates: 13 – 14 July 2021

For further information about this event please click on the right.



ETD has been regularly organising P91 and P92 courses in the UK and many other countries of
the world including USA, South Africa, Australia, Europe, South East Asia and the Middle East
over the last 20 years. These are well established and popular courses. Indeed, ETD was the first
company to draw attention to the importance of the heat treatment, fabrication and quality check
of these materials and how to identify problems when they occur and how to rectify these.
Each course is updated with the latest information and the latest industry and research
experience. Day 1 of the course will discuss the material properties and the importance of
correct heat treatment. This will be followed by the plant experience worldwide. Day 2 will
focus on the weldment behaviour and how this may affect the vulnerability of the welded
components to Type IV cracking and failure. This will be followed by the latest in component
inspection and condition/ life assessment methodologies.


0800 – 1030 h (with 15 min. break)
Presenter: Dr D Robertson
To develop a better understanding of the underlying concepts and basis of P91 development,
its properties, the effect of heat treatment, chemical composition etc.
Specific topics will include:
• The effect of heat treatment (austenitising/ normalising and tempering) on microstructure.
• The effect of heat treatment on material strength, creep strength, hardness and ductility.
• The effect of chemical composition details and what to look for.
• P91/ P92 materials specifications – European, ASME, other codes, practices,
recommendations, standards & their differences, and best available practices.
• Quality control and checks required when receiving material. Acceptance tests of
components, hardness, microstructure etc.
• Potential sources of materials data.


Presenter: Dr David Allen
To provide an overview of experience with P91 / P92 in power plant, including “Type IV”
weld HAZ creep cracking and failures in service, the identification and elimination of
“aberrant” mis-heat-treated P91/ P92 material, and recommendations for the purchase,
design, installation, management, repair and replacement of P91/ P92 plant components.
Specific topics will include:
• What can go wrong?
➢ Premature “Type IV” cracking at welds
➢ “Aberrant” soft, weak parent materials
• What can we learn from worldwide plant experience with P91/P92?
• How can we write purchase specifications which will avoid buying sub-standard
• How can we monitor manufacture and installation to eliminate “aberrant” material?
• How should we inspect and monitor P91/P92 components during their service life, and
will flexible operation bring new problems?
• When we find soft material or cracking in service, what can we do to maintain safety
without excessive outage or repair costs?
• When we need to replace components prematurely, can we improve material selection
and/or design, so that the problems do not simply recur again?

Module 3: Welding and Welded Component Behaviour

0800 – 1030 h (with 15 min. break)
Presenter: Dr D Robertson, ETD Consulting, UK
To create an understanding of the welding and pre- and post-weld heat treatment
requirements and the criticality of the precise control required for this steel. These issues
will refer to industrial experience to date.
Specific topics will include:
• Suitable welding procedures, pre-and post-weld heat treatment, weldment
microstructures and properties; the Type IV zone
• Type IV cracking; weld strength/ life reduction factors.
• Weld repair issues.
• Dissimilar metal weld issues (P91/ P92 to low CrMoV steel welding, P91/ P92 to
austenitic stainless steel welding), the effect of cycling and lessons from plant experience.


Module 4: P91/ P92 Component Inspection & Integrity/ Life Assessment

1115 – 1330 hrs (with 15 minutes break)
Presenters: Dr Ahmed Shibli, Dr David Robertson
To understand how P91/ P92 component integrity can be assessed. What are the available
techniques and the advantages that they may offer. This includes a better understanding of
the basic principles of oxidation in steam and its effect on tube over-heating and cracking/
Specific topics will include:
• Late cavitation development due to creep.
• Ductility and hardness issue.
• Type IV failures and their early detection.
• NDE techniques and their use for life assessment.
• Potential of the use of new NDE type techniques.
• Developments in Europe and Japan for life assessment of P91/ P92 component integrity/
life assessment.

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