scottschwieger – Page 57 – Combined Cycle Journal

Working safely in a powerplant with a medical implant

By some counts, says James E Timperley of J E Timperley Consulting LLC, over 300,000 electronic medical devices—such a pacemakers, defibrillators, cochlear, and neurostimulators—are implanted in Americans annually. Millions of these appliances are in service, covering all age groups in today’s population. This means that perhaps 1% of all people entering a powerplant may have […]

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Case history: Effects of cyclic duty on air-cooled generators

Best Practices / By scottschwieger

Editor’s note: This article is based on the presentation, “Frame 6/6A3 ‘minor’ outages turned into majors with field rewinds,” by Jamie Clark of AGTServices Inc at the 2019 meeting of the Frame 6 Users Group. Owner/operators will have the chance to hear Clark’s presentation, “5 Generator Minors Turn Into 3 Generator Majors!!!,” on June 23

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Lawrenceburg: 2019 Best of the Best

Best Practices / By scottschwieger

Performance, flexibility upgrades boost profitability in dynamic market Lawrenceburg Power operates in the PJM Interconnection. Plant owner Lightstone Generation wanted a reliable, cost-effective upgrade to simultaneously maximize capacity payments and align combustion and hot-gas-path (HGP) inspections at a 32,000-hr maintenance interval. The plant operates in a shale-gas region and can receive fuel from multiple sources

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7F Digital Conference: Week 2 user, vendor presentations recapped here

7F Users Group / By scottschwieger

Editor’s note: What follows are summaries of user and vendor presentations made last Tuesday and Wednesday. They illustrate the value of participation in both the 7F Users Group’s 2020 Digital Conference and the organization’s upcoming 30th Anniversary Meeting at the Marriott St. Louis Grand, May 24-28, 2021. To dig deeper, PowerPoints or video recordings of

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Dig into the details of products/services available from PSM, Shell/ACT, Doosan

CCUG / By scottschwieger

There were two special live technical presentations during Week 3 of the 7F Users Group’s 2020 Digital Conference—one by PSM, the other by Shell/Advanced Chemical Technologies—and one extended live technical presentation from Doosan Turbomachinery Services. The video recordings, available on-demand to owner/operators, bring you up-to-date on the products and services offered by these companies to

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“Little things” can mean a lot, as this case history of a heat-exchanger leak attests

CCUG / By scottschwieger

The presentation at the 7F Users Group’s 2020 Digital Conference through Week 3 (two weeks to go) that has generated the most questions and discussion among attendees concerned a leak in a plate-and-frame lube-oil cooler. Go figure! How could a mundane leak generate this much interest at a high-tech meeting? Read on: There are some

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Discussion format of rotor session creates a vibrant exchange of experiences

CCUG / By scottschwieger

The 7F Steering Committee invigorated last Wednesday’s (Day 7, July 1) program by leading off with a discussion session on rotors rather than a user presentation on the subject, as had been the norm for the other days of the event. The format was simple: A committee member and special user guest greased the skids,

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Dr Roointon E Pavri, Dec 13, 1944-July 2, 2020

STUG / By scottschwieger

Roointon Erach Pavri had recently retired from GE Energy when he was recognized for “extraordinary contributions” to the electric power industry with the Frame 6 Users Group’s 2007 John F D Peterson Award (photo). Pavri had achieved “hero status” with this organization for his technical leadership in resolving complex gas-turbine application issues. He graduated from

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7FA LCI digital-front-end case history

STUG / By scottschwieger

John Downing, Turbine Controls & Excitation Group (TC&E), celebrated the company’s 10th anniversary with a presentation last Wednesday at the 7F Users Group’s 2020 Digital Conference. He reminded the 300 or so owner/operators in attendance that many gas turbines are starting and stopping far more frequently than originally designed for. At the same time, independent

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EPT-CleanOil: A paradigm shift in gas-turbine lubricant maintenance

STUG / By scottschwieger

Presentations on turbine lubricants and/or their maintenance are oft-discussed subjects at user-group meetings. Plus, you can expect to see a half-dozen or more companies in the exhibit hall offering fluids and varnish-removal systems—all competing for your business. Having so much information from disparate sources can make it difficult for a user to decide on the

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