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Tetra Engineering Group, Inc. has assisted the owners of natural gas-fired combined cycle plants with effective remedies to pressure part thermal performance and reliability issues since 1993. This includes some of the following 'firsts' for Tetra: 1993 First HRSG Assessment 1996 First Reliability Assessment - Standard HRSG OEM Design 1998 First FAC Assessment for HRSG Tube Failures at Cogen First High Energy Piping Inspection Plan 1999 First HRSG Two-Shift Cycling Assessment 2000 First HRSG Warranty Inspection Third Party Review of Alternate TEG Distribution Grids First HRSG Water Chemistry Training Seminar 2001 1st HRSG Cost of Cycling Assessment First CCGT High Energy Piping RCFA First HRSG Purge Time Assessment First Fuel Gas-Steam Pipe RCFA 2002 1st HP ECON Tube RCFA First Bowed RH Tube Evaluation 1st Ed., HRSG Tube Failure Diagnostic Guide RH Tube RCFA - Fleet of Standard HRSG Design Third Party Review of HRSG Harp Weld Quality HRSG Design Review for Owner 2003 1st Piping Stress Analysis - HRSG RH Piping Field Support following CRH Waterhammer Event First CCGT Pipe Support Inspection 1st Ed., HUG O&M Manual 1st 3D Knowledge Management System 2004 1st Review of Attemeprator Spray Control Logic First Hot Reheat Drainpot RCFA First Evaluation of High Energy Steam Drain Capacity HRSG Baseline - North Africa PipeVue 1.0 - First KMS for Piping 2005 HRSG and Steam Plant FFS - 10 Year Program HRSG T23 Failure and Weld Quality First Vertical Gas Path HRSG Tube RCFA First Cost of Cycling Assessment 1st Ed., HRSG Inspection Planning Guide 2006 1st Evaluation - Changed Main Steam Temperature First HRSG RCFA Projects - Various Clients in Mexico HRSG Component Reliability Database 1st HRSG EOH Assessment 2007 1st NFPA 85 Improved Purge Time Evaluation Third Party RCFA - Need for Chemical Cleaning First Grade 91 Inspection Plan & Field Inspections Engineering Review of Replacement Deaerator Design 2008 HRSG Thermal Design Tool: PPSD - Various Projects Design and Installation of Improved RH Header Restraint First Onsite Water Treatment Program Upgrade First HRSG Hot Spot Warranty Project - Ireland 2009 1st FFS for Bulged CRH Piping Damage Field Support - Main Steam Stop Valve Damage First ACC Inspection and Thermal Performance Evaluation First LP ECON Header RCFA - Middle East 2010 1st CPS Piping Program - New ASME Requirements First Deaerator Inspection and Condition Assessment First FFS for Localized Thinning of FW Piping First Casing Hot Spot Repair with Pumpable Insulation 2011 1st ACC Inspection and Condition Assessment Thermal Evaluation of RH Lower Link to Manifold Cracking Seawater Contamination during Commissioning - Middle East P91 Hot Reheat Lateral Inspection and RCFA 2012 1st CFD Analysis of Perforated Plate in HRSG Duct Third Party Engineering Review of OEM Re-Design of LP Evaporator HRSG Damage and Remaining Life following Seawater Contamination 2013 1st HRSG Warranty Inspection - Peru Long Term Third Party Witness - Offshore HRSG Fabrication 1st P91 Risk Assessment & Inspection Plan - IWPP Plant 2014 1st Benson Boiler HRSG Warranty Inspections HRSG Outlet Manifold Creep-Fatigue RCFA Main Steam Piping RCFA PipeVue 2.0 - Released for Various Projects Thermal Modeling - Prudhoe Bay Glycol Heating System HRSG Vibration Study - Belgium Tetra Engineering Middle East Opened - Dubai, UAE 2015 1st Fleet-Wide HRSG Health Check Assessment Survey of Industry 'Rust' Release Experiences after Startup Engineering Design and Purchase Spec. for Alteration to HRH Lateral 1st UT Linear Phased Array Inspection in Mexico 2016 3rd Edition, HRSG Tube Failure Diagnostic Guide HRSG Beyond Design Lifetime Condition Assessment Stress Analysis and Site Support for Alteration of HRH Lateral NFPA-85 Purge Compliance after Alteration - SCGT Duct Burner RCFA 2017 1st CPS Piping Program - Canada Engineering Study of HRSG Pre-Heat System for CO Emissions Control First Condition Assessment for Once-Through SG - LM6000 Plant Engineering Spec. for HRH Attemperator Upgrade 2018 First Fleet-Wide CPS (High Energy) Piping Program 15 Year Re-Evaluation of HRSG Cycling Assessment ..... Our thanks to our clients for their patronage over all these years.
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