The 7EA gas turbine’s many attributes—including generally high reliability and availability, and good efficiency in a wide range of applications on a variety of fuels—help make it the most popular mid-size (nominal 85 MW) industrial gas turbine. There are said to be about 1200 of these machines in service. Annual meetings of the 7EA Users […]
TILs critical to 7EA inspection success Read More »
This is the final part of a five-part series on the design, operation, and maintenance of reverse osmosis systems for powerplants compiled by Wes Byrne, U.S. Water’s consultant on membrane technologies. Parts I, II, III, and IV are identified below. Part I: Value proposition, how it works Part II: Importance of a pilot study in
RO Part V: When to clean, how to clean Read More »
It happens to all of us. One day we wake up and realize, we’re not young anymore. You can, in the same breath, decide you need to do some things differently. Or, you can ignore it, and pay a larger price later. The same thing is true with heat-recovery steam generators (HRSGs). Combined-cycle plants experienced
HRSG best practices: Plan now for old age Read More »
Ever stop to think about what’s going on with your HRSG’s steam drums, out of sight for the most part and all wrapped up in insulation? Even if you were to hike up to the drum level what could you see? Next question: How many people at your plant really think about the boiler? Their
Steam drums demand regular inspection, continual attention Read More »
It’s easy to forget about the “big box” selective catalytic reduction (SCR) unit sandwiched in your HRSG modules, even though it stands between you and compliance with your air permit, and your ability to operate. At the 2017 conference of the Combined Cycle Users Group (CCUG), held in Phoenix the last week of August, Andy
Consider the impact of new operating regimes on your SCR Read More »
Natural-gas fuel composition has considerable influence on gas-turbine emissions and operability. This might not have been a concern to you previously, but the possible impacts on your engines of increasing reliance on non-traditional pipeline gas—in particular, shale gas, but also LNG, and byproduct fuels from industrial processes—suggests you might want to read on. Even if
How natural-gas fuel variability impacts GT operation Read More »
When Paul White crossed over to the spiritual world from the physical Nov 16, 2017, he was well prepared for the journey and certainly was welcomed by those who had preceded him. White was a deeply religious man who taught Sunday school and gave church activities his full support—all while excelling in his engineering day
Paul White’s legacy Read More »
The 501F Users Group’s 2018 conference and exhibition is only a few months away—Feb 25 – Mar 2, at the Hyatt Regency Grand Cypress, Orlando, Fla. It is your only chance in the coming year to visit with the major service providers and parts suppliers for the 501F fleet. Exclusive closed sessions for owner/operators with
Ontelaunee details experience with GT uprate, exhaust cylinder fix Read More »
There are nearly as many electric generators at fossil-fired and nuclear powerplants as there are gas and steam turbines combined. So, you might think that with thousands of utility/large industrial-grade generators rated more than 25 MW operating in the US alone, the annual meeting of the Generator Users Group (GUG) would draw hundreds of attendees.
GENERATORS: Lessons learned, best practices shared at GUG 2017 Read More »
Commissioning seven gas-turbine (GT) control systems in seven weeks would probably be taxing under the best of conditions. In NV Energy’s case, there were some extenuating circumstances. First, the seven systems are located at two generating facilities acquired by the utility in 2014. Second, it is challenging to test a retrofit, due to air permit
Checklist for success: NV Energy commissions seven turbine DCSs in seven weeks Read More »
