WELDLIFE - Avoidance of P91 Type IV failure in P91 and P92 Steels

To read the proposal brief please click on the Proposal Image

There was an initial project meeting about WELDLIFE in Surrey, just south of London, during the first half of March 2015. If you still want to be part of this GSP, please email us to register your interest.

ETD hosted a webinar presenting this GSP, on 15 January 2015 at 1600h. To view the webinar recording click here. Note: the recording is password protected - if you wish to access it please email us.

“Type IV” in-service creep cracking at weld heat-affected zones in leading power plant steels, such as P91 and P92, has often been considered to be a costly but unavoidable life-limiting problem.  However, as the GSP Outline shows, recent UK industrial and collaborative research projects indicate that by a) improving the heat treatment, and, b) altering the welding processes, the life of welded components can in fact be improved by a factor of the order of 2 to 3 times by measures that will slow down or prevent Type IV cracking.  This should result in tremendous benefits for the steel producers, plant manufacturers, plant operators and welding companies alike.
The preliminary findings, exciting as they are, need to be proven in practical application and demonstrated through model component testing, long term stress rupture/ creep testing data generation, and detailed analyses for long term safe life prediction and assessment. This new GSP is aimed at achieving these objectives. It is encouraging that some of the industry partners involved in the preliminary projects have shown interest in being involved and contributing their knowledge base, experience and test materials.
The work programme and the indicative costs shown in the Project Outline are subject to discussion between the potential industry sponsors

We look forward to hearing from you.  

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