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Cold Weather: How to Maintain Power Plant Readiness and Reliable Operation

Extreme temperature and weather events have become more prevalent in the past decade. The December…

Hot Weather: How to Maintain Power Plant Readiness and Reliable Operation

Extreme temperature and weather events have become more prevalent in the past decade. In fact,…

The Future of Hydrogen as a Gas Turbine Fuel 

Published on: July 18, 2023 Jason Neville Turbomachinery Magazine, July/August 2023, Volume 64, Issue 4 Running traditional natural gas…

EN Engineering Acquires Delaware-Based TG Advisers, LLC.

(Warrenville, IL) April 7, 2022—Today, EN Engineering (“EN”) announced the acquisition of TG Advisers, LLC.,…

How to Prepare for a Steam Turbine Generator Outage

Preparing for a Steam Turbine Generator Outage TG Advisers’ team of experts have extensive turbine…

February 2021 TGA Newsletter

Turbine and Generator Experts at Your Service TG Advisers’ premier engineering consulting services are valued…

Gas Conversions – Don’t Forget the Steam Turbine Generator

Stephen R. Reid, PE President and Principal Engineer TG Advisers, LLC. Gas Conversion Projects Environmental…

Understanding Steam and Gas Turbine – Generator Fan Failures

Dan Skedzielewski Bill Robbins Stephen Reid, PE TG Advisers, LLC. Background The potential failure of…

Steam Turbine Last Stage Free Standing Blade Cracking

Inspection Findings: During a planned major outage, last stage blades were found with cracking in…

Turbine Generator Health Assessments

Turbine Generator Health Assessment Background: TG Advisers began its health assessment program in 1991 and…

Generator Boresonic Inspection Interval Extension

Client Request:  Evaluate the risk level associated with postponing a boresonic inspection of their generator field…

Renewable Energy – Pushing Gas Turbine Components to their Cycling Limit!

Thomas R. Reid Engineering Manager Gas turbine maintenance intervals are determined by hours, starts, or…

Dynamic Reinspection Intervals

LP Shrunk-On Disc and Blade Attachment Inspection Findings: During an outage, phased array ultrasonic testing…

Thermally Sensitive Generator Rotors

Thermally sensitive generator rotors tend to bow and increase bearing vibration. In some cases, a…

Steam Turbine Cycling

OPERATOR CONSIDERATIONS, BEST PRACTICES AND OPTIONS FOR OPTIMIZATION Market dynamics are dictating increased unit cycling—are…

Steam turbine high temperature casing cracking

Dispatching requirements for many combined cycle plants (CCP) have pushed design limits for fast starts,…

Torsional vibration concerns on steam turbine generator retrofits

Based on a recent assessment of nuclear and fossil generating stations in Europe, TG Advisers…

Evaluate steam turbine control valve seat interference

Control and governor valves operate under severe service conditions. Exposure to high temperatures, erosion, water…

SCC of low pressure rotor blade attachments

Stress corrosion cracking (SCC) of low-pressure steam turbine rotor blade attachments is an industry issue…

Specify combined-cycle steam turbine’s rotors for daily start, stops

Combined cycles are expected to cycle on and off more frequently than conventional fossil-fired units.

Junk in and junk out

Torsional vibration resonance can result in significant turbine and generator damage and extended forced outages.

Establishing combustion turbine blade and vane refurbishment intervals

Combustion turbine blade maintenance and refurbishment intervals must take into account many design and operation…

Guidelines to achieve successful gas turbine part refurbishment

Gas turbine hot-section hardware requires part refurbishment after a specified number of operating hours, unit…

Steam Turbine and Generator Reduced Minimum Load Considerations

Background Reducing the minimum load at which a unit can reliably operate is one method…

Torsional Vibration Failures of Large Steam Turbine Generators

Background In the early 1970’s, the industry experienced a number of unsolved low-pressure turbine blade…

Stress Corrosion Cracking (SCC) of Low Pressure Rotor Blade Attachments

Background Stress corrosion cracking (SCC) of low-pressure steam turbine rotor blade attachments is an industry…

High temperature steam turbine rotors

New environmental regulations and the installation of renewable energy sources have resulted in many retirements…

Design challenges of repowering steam turbine generator

Image Gallery Background Environmental pressures on conventional fossil fueled boilers has led to a large…

Structured Technical Reviews of Turbine-Generator Retrofits

For older plants, turbine-generator retrofits are an effective and economical option to extend plant life.…

Turbine Water Induction Protection Systems

The accidental introduction of water in any part of a steam turbine can cause serious…

Don’t Lose Your Tune with Turbine Blade Damage

Blade Erosion Damage The later stages of low pressure (LP) turbine blades operate in a…

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