This author has yet to write their bio.Meanwhile lets just say that we are proud Mike.Lake contributed a whooping 62 entries.
A turbogenerator stator is comprised of two major components: 1) the stator windings, and 2) the stator core. The stator core is made up of thousands, tens of thousands, or hundreds of thousands of individual steel laminations. Modern laminations are comprised of silica-steel, cold-rolled and grain-oriented as specific designs might require. The material is typically […]
The steam turbine gland steam seal system is designed to keep steam from leaking out of the turbine and to prevent air from leaking into the turbine. A gland seal system can be as simple as a spray chamber, loop seal and a steam ejector or as complex as surface condensers, air blowers or vacuum […]
Some compressor failures have been attributed to “lock-up” of the stator vanes. The vane roots are designed to rock slightly at their roots when moved with your hand. Rust and debris can inhibit this movement. An immobile vane changes the stress profile on the vane which can cause cracking and potential failure. Mechanics should check […]
Ever heard the adage “Close is only good in horseshoes and hand grenades”? We think that close calls are also important to maintaining a safe work environment. Exposing, analyzing, communicating and learning from these events is an important part of TGM®‘s safety program. We call these experiences “Near Miss” events. The resolution of one of […]
Thermal Barrier Coatings (TBCs) protect the first several rows of hot gas path parts from the high combustion temperatures in many advanced large frame turbines. Not all coating applications are equal, and some can even reduce the efficiency of your unit. TBCs are designed to reduce the temperature of the buckets and stators while providing […]
If a combustion turbine experiences reduced power output and heat rate, the usual suspect is compressor fouling. But what if cleaning the compressor through on-line and off-line wash is not enough to recover lost compressor efficiency? Some users experience no gain in gas turbine output or improvement in heat rate even after a Major outage. […]
Contaminated steam can seriously impair the performance and reliability of the turbine. Dissolved minerals can cause an accumulation of deposits on surfaces, impeding fluid flow. A deposit thickness of only 3 mils on the convex surface of buckets can cause an increase of 1 to 2 % in the fuel bill and a 1% reduction […]
TGM® has developed a process to install a magnetic flux probe without removing the rotor from the generator. A flux probe can detect the degree and location of shortened turns in generator rotor windings, down to a specific pole and coil, without taking the generator off line. An installed flux probe allows generator specialists to […]
We emphasize a lot of “on the job” safety, but what about “off the job” safety? We have a responsibility to use what we learned in all of our safety training and apply it to everyday safety. A large part of safety training is to help you form a safe attitude – to encourage you […]
Both RTDs and thermocouples are sensors used to measure heat in scales such as Fahrenheit or Centigrade. Such devices are used in a broad range of applications and settings, each with its own advantages and disadvantages. Resistance Temperature Detectors (RTDs) The electrical resistance of metals rises as the metals become hotter, and falls as heat […]
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