All posts by Hans van Esch

Research and Development for SX and DS alloys

Together with EPRI and select IGT repair facilities, TEServices is performing research and development for Single Crystal (SX) Rene N4 and N5 and Directionally Solidified (DS) GTD 111 and MGA 1400 by evaluating different age heat treatment, rejuvenating heat treatments, metallurgical condition including carbides and gamma prime as well as mechanical properties including hardness, stress … Continue reading Research and Development for SX and DS alloys

Alstom GT11NM Hot Section Evaluation

TEServices assisted and end user with the evaluation  of the hot section components in order to determine the limitations and explore the possibility of extended operation cycles. For this project TEServices reviewed the most recent borescope inspections which was followed by an onsite visual inspection of the components as they were removed from the turbine. … Continue reading Alstom GT11NM Hot Section Evaluation

Hot Section Life Management through Improved Material Property Recovery

On October 11, 2018 John Scheibel, EPRI and Stijn Pietersen, TEServices European Gas Turbine Engineer, co-presented “Hot Section Life Management through Improved Material Property Recovery”  during the 9th International Gas Turbine Conference “The Future of Gas Turbine Technology” in Brussels. The conference was attended by gas turbine end users, OEM’s, US government agencies (DoE and … Continue reading Hot Section Life Management through Improved Material Property Recovery

Jessica Watson, TEServices Laboratory Technician

Jessica joined TEServices in October of 2018 to perform the daily metallurgical lab activities. Jessica has several years of experience as a lab technician with different metallurgical labs including LyondellBasell from 2012 to 2018 and Anderson Associates from 2006 to 2012 with experience in sectioning, grinding, polishing, etching, visual microscope, SEM, hardness and failure analysis.

GE Roundtable Session CTOTF on Non-OEM Repair Facilities

Pierre Boehler presented TEServices prepared introduction of non-OEM repair on GE matured and advanced gas turbines including: Older versus newer designs (fire temperature, technology and margin of error: B, EA, F.03 versus F.04 / H) Conventional versus enhanced repairs Vendor selection part of the 6 steps of successful IGT component repairs Repair facility sub-contracting and … Continue reading GE Roundtable Session CTOTF on Non-OEM Repair Facilities

Frame 6 Users Group

Van Esch boiled down and tweaked his material for a one-hour presentation focused on the needs of 6B users. Here’s an outline of the subject matter presented: Assessing the condition of GT parts onsite. Preparing meaningful component repair specs. Selecting the appropriate vendor to refurbish turbine parts. Key stages in the repair process. Verifications during … Continue reading Frame 6 Users Group

7F Users Group Dives Deeper into Engine Issues

7F Users Group Dives Deeper into Engine Issues- CCJ 2016 The 7F Users Group steering committee has realigned the program for its annual meeting to focus exclusively on the world’s most popular frame gas turbine. For several years prior to the 2016 conference at Orlando’s Rosen Shingle Creek hotel, May 9-13, the agenda had expanded … Continue reading 7F Users Group Dives Deeper into Engine Issues

Stijn Pietersen, TEServices European IGT Engineer

Stijn Pietersen joined TEServices in 2016 to support European IGT end-users from his Amsterdam, the Netherlands location. Based on his metallurgical back ground and knowledge together with his IGT repair and manufacture experience, he is supporting European IGT end-users with audits, vendor verifications and other technical support, see TEServices.eu. Stijn graduated from Delft University of Technology … Continue reading Stijn Pietersen, TEServices European IGT Engineer

Keyence Digital Microscope

In March 2015, TEServices added a Keyence Digital Microscope VHX-5000 with XYZ motorized stage to increase their metallurgical evaluation equipment (stereo, light and scanning electron microscopes). This microscope has a better depth-of-field, resolution and brightness, multi-angle observation, dimensional measurement, 3D display and takes pictures in High-resolution HDR (High Dynamic Range). The digital microscope improves flat … Continue reading Keyence Digital Microscope

Revised/Re-issue Six Steps of Successful GT Component Repairs

TEServices is dedicated to educating and training IGT users and has therefore created a series of articles called “Six Steps of Successful GT Component Repairs”(published in Combined Cycle Journal in 2005) These articles have been updated and were re-issued by Combined Cycle Journal in the link above. Please note that in 2003 TEServices developed a 3 … Continue reading Revised/Re-issue Six Steps of Successful GT Component Repairs