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  • Welding and Repair of High Temperature Steels - Part 2

Welding and Repair of High Temperature Steels - Part 2

  • 24 Feb 2022
  • 1:30 PM - 4:30 PM
  • Online (Zoom)
  • 433


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Technical Group Webinar

This Welding and Joining Processes Technical Group webinar is the second half of a two-part series on the welding and repair of high temperature plant - it is a standalone event, you do not have to have attended part one in order to attend this event. It will be of interest to anyone working in the power generation or process plant industries, either in manufacturing or those responsible for the maintenance and repair of pressure equipment. 

It will be of particular interest to welding engineers and designers, covering developments in joining technologies and welding consumables, production of bespoke items in high temperature materials and the justification for the lowering of PWHT temperature for P/T91 steel.

Experts from industry and TWI will be presenting on a range of topics:

  • Mark Golding, Director of Mark Golding Consultants will present on electro slag cladding – past, present and future

  • Stephan Marre of Lincoln Electric on the orbital welding of high pressure pipework

  • Ronny Krein of Voestalpine Bohler on the challenges in developing welding consumables for creep resistant steels, particularly P/T91 and P/T9

  • Emily Davison of TWI on advances in the additive manufacture of high temperature materials

  • John Siefert of EPRI will be talking about the perspective on minimum post weld heat treatment temperature for grade 91 steel

  • Professional Members of The Welding Institute: £25 + VAT (£30)
  • Industrial Members of TWI: £25 + VAT (£30)
  • Non-members: £95 + VAT (£114)
  • Retired Members: £25 + VAT (£30)
  • Students: £25 + VAT (£30)
  • TWI Training School Customers: £70 + VAT (£84)
  • TWI Staff - please contact Becki Parratt if you wish to register

Please note that payment must be made before the event in order to receive the joining instructions for the event.


Registering on this Technical Group webinar as a non-member or a TWI Training Customer gives you full Associate Membership (AWeldI) for one year. To activate your membership, just complete the highlighted fields on the event registration form.

You will also benefit from:

  • Information transfer from experts
  • Discussion, questions and answers on the specific topics
  • A broader understanding of the extent of standards in the industry
  • Attendance of this event qualifies for CPD 


The Welding Institute awards points towards CPD for delegates attending this webinar. Every hour attendance of an event will earn 2 points towards your continuing professional development.

Please contact becki.parratt@twi.co.uk if you require a certificate of attendance towards your continuing professional development.


Mark Golding Stephan Marre Ronny Krein  Emily Davison John Siefert

Mark Golding - Director - Mark Golding Consultants

Presentation title: Electro Slag Cladding – Past, Present and Future

40+ year experienced professional with a demonstrated history in the mechanical and industrial engineering industry. Previous experience in gas, petroleum, power plants, pipelines, repair and reclamation industries. Strong support professional with a metallurgical/engineering bias. Development of welding processes such as GMAW, GTAW, SAW and ESW in synergy with the welding consumables to develop process efficiency and the metallurgical benefits.

With previous experience with companies such as Oerlikon, Soudometal - Bohler and Lincoln – Metrode, Mark has developed consumables, managed procurement and supply chains, developed sales in export markets in the EMEA, India, Africa and managed a technical support function and development.

Stephan Marre IEng MWeldI EWE/IWE - Industry Segment Manager, Lincoln Electric

Presentation title: Orbital Welding of High Pressure Pipework

Stephan is currently working in a welding consumable and welding equipment manufacturing company providing industry leading welding solutions with my extensive practical and theoretical knowledge of all major welding processes.

Qualified European and International Welding Engineer and registered as Incorporated Engineer at the British Engineer Council having spent the first 4 years of his career working as a Welding Technician and Engineer in France. After moving to the UK, he worked 2 years for a global oil and gas company.

Since March 2018, Stephan’s position is in Industry Segment Management, supporting top accounts and developing full industry solutions in order to solve customer issues and needs.

Dr Ronny Krein - Specialist Welding Technology - voestalpine Böhler Welding Germany

Presentation title: Welding Consumables for Creep Resistant Steels

Ronny is experienced in the development and qualification of creep resistant steels and in the assessment of creep rupture data for base material and welded joints.

He is also a member of national and international high temperature material committees, an international welding engineer and technical consultant for global customers at Böhler Welding. 

Dr Emily Davison - Project Leader - Laser Additive Manufacturing (LAM), TWI Ltd

Presentation title: Additive Manufacture of High Temperature Materials

Emily joined TWI as a Project Leader in the Laser Additive Manufacturing (LAM) section in 2018. Her current role focuses primarily on Laser Metal Deposition (LMD) technologies, including leading the development of wire LMD (w-LMD) capabilities at TWI’s Yorkshire facilities. She completed her PhD at the University of Sheffield in 2020, investigating LMD parameter optimisation for repair applications.

Dr John Siefert - Program Manager, Materials and Repair (P229) of EPRI

Presentation title: Perspective on Minimum Post Weld Heat Treatment Temperature for Grade 91 Steel

John has executed and led research and development activities in the power industry for 15 years. His background includes extensive exposure to in-service failures, life management and repair challenges. Over his career John has published >150 documents specific to these challenges.

The presentation will provide the rationale for recent rule changes in ASME B&PV Code rules for reducing the minimum post weld heat treatment temperature from 705 or 730°C to 675 or 705°C. The information will include supporting evidence and data for these reductions.

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