Access turbine & generator newsletters, articles, and case studies published by our experts at TG Advisers, LLC.
31 PUBLICATIONS
Extreme temperature and weather events have become more prevalent in the past decade. The December 2022 Christmas freeze in the southeast U.S. saw many are…
Extreme temperature and weather events have become more prevalent in the past decade. In fact, July 2023 is shaping up to be “the hottest single month on E…
Turbomachinery Magazine , July/August 2023, Volume 64, Issue 4…
(Warrenville, IL) April 7, 2022—Today, EN Engineering (“EN”) announced the acquisition of TG Advisers, LLC., steam and gas turbine, generator, and utility …
TG Advisers’ team of experts have extensive turbine generator outage planning experience. We polled our team for best practices to help in preparing for yo…
As independent consultants with extensive OEM experience who do not manufacture or supply equipment, we are able to provide analysis and technical field ad…
Environmental pressures have caused most US power generation owners to reevaluate both short and long term options for their coal generation assets. Retir…
The potential failure of generator rotor fan vanes and blower blades has been identified as an area for detailed risk assessment in the electric power gene…
During a planned major outage, last stage blades were found with cracking in the blade attachment. The blades were of a free-standing design, which means t…
TG Advisers began its health assessment program in 1991 and has completed over 350 turbine generator assessments to date. Our database of units includes s…
Client Request: Evaluate the risk level associated with postponing a boresonic inspection of their generator field beyond OEM recommendations. OEM guidel…
Gas turbine maintenance intervals are determined by hours, starts, or a combination of both. The latter is often referred to as equivalent operating hours …
During an outage, phased array ultrasonic testing of DFLP shrunk-on discs found no recordable indications on any of the disc bores or keyways. OEM guidelin…
Thermally sensitive generator rotors tend to bow and increase bearing vibration. In some cases, a rotor rewind is required to restore the unit to acceptabl…
Regardless of age or design of steam turbines, there are industry best practices to help prepare for an uncertain future that certainly will include an upt…
Dispatching requirements for many combined cycle plants (CCP) have pushed design limits for fast starts, load and on-off cycling operations. Gas turbine te…
Based on a recent assessment of nuclear and fossil generating stations in Europe, TG Advisers identified various levels of torsional vibration concerns in …
Control and governor valves operate under severe service conditions. Exposure to high temperatures, erosion, water induction and low- and high-cycle fatigu…
Stress corrosion cracking (SCC) of low-pressure steam turbine rotor blade attachments is an industry issue on older fossil and nuclear units. Many units ha…
Combined cycles are expected to cycle on and off more frequently than conventional fossil-fired units. To ensure reliable service, plant owners and develop…
Torsional vibration resonance can result in significant turbine and generator damage and extended forced outages. The issue of torsional resonance of blade…
Combustion turbine blade maintenance and refurbishment intervals must take into account many design and operation specific factors. Combustion Turbine Hot …
Gas turbine hot-section hardware requires part refurbishment after a specified number of operating hours, unit stop-start cycles, or a combination of the t…
Reducing the minimum load at which a unit can reliably operate is one method to increase revenue potential during lower demand periods. For this reason, it…
In the early 1970’s, the industry experienced a number of unsolved low-pressure turbine blade failures. The most notable occurred at the Prairie Island Nuc…
Stress corrosion cracking (SCC) of low-pressure steam turbine rotor blade attachments is an industry issue on older fossil and nuclear units. Many units ha…
New environmental regulations and the installation of renewable energy sources have resulted in many retirements of older legacy steam turbine generating u…
Environmental pressures on conventional fossil fueled boilers has led to a large number of repowering projects utilizing gas turbine technology coupled wit…
For older plants, turbine-generator retrofits are an effective and economical option to extend plant life. However, retrofits entail risks that, if not ide…
The accidental introduction of water in any part of a steam turbine can cause serious damage requiring extended outages to make costly repairs. A prolifera…
The later stages of low pressure (LP) turbine blades operate in a low quality steam environment. Design moisture levels can range from 1 or 2 percent all t…
Have a question and want an independent or second opinion? TG Advisers provides on-line, phone or site expert engineering consulting support at a fixed hourly rate or retainer considered to be at a substantially discounted rate from those rates published by OEMs.