7F Users Group

Real-time optimization pushes out into distribution networks

Optimization of the utility production and delivery system at the University of Texas, Austin (UT-Austin) is the poster child for a work in progress. After all, you don’t optimize a 90-year-old powerplant, one with a mix of really old boilers and state-of-the-art gas turbine/HRSGs overnight or even in a few years. It’s also a glimpse …

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Doosan takes a high-profile position in aftermarket services

In today’s topsy-turvy world of electric-power generation and delivery anything can happen, and it does. Recall that only a couple of years ago, the OEM with the largest position in the generation sector purchased a major competitor and tried to take by storm the industry’s aftermarket business—worldwide. That might have led some to conclude that …

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ACC Users Group publishes tube cleaning guidelines

The Air-Cooled Condenser Users Group (ACCUG), established by NV Energy in 2009, has recently publish technical guidance document ACC.02, Guidelines for Finned Tube Cleaning in Air-Cooled Condensers. This document includes fundamental principles, operational factors that can limit efficiency, types of tube fouling, debris removal methods and examples, cleaning frequency, as well as safety and environmental concerns. Following is a overview. …

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NAES fills reliability gap at the plant/grid interface

Last year, NAES Corp, well known to CCJ ONsite readers as a leading third-party plant O&M services provider, acquired Gridforce Energy Management LLC, extending NAES’ services into the transmission and distribution arena. Gridforce’s genesis was at Duke Energy North America (DENA) back in the late 1990s when the industry was driving towards unbridled competition.  For almost 20 …

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Factor European experience into O&M practices at US combined cycles, Part III: Improve inspections, data analysis especially for cycling units

Richard Walton of SSE (formerly Scottish & Southern Energy plc), spoke to participants in European Technology Development Ltd’s International Conference on Power Plant Operation and Flexibility, London, July 2018, on thermal transients and their impacts throughout the company’s fleet, suggesting more targeted inspections, monthly monitoring and reporting, trending and investigating, and the need for improved industry guidance. Details …

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Air in-leakage: ACC performance thief

Part 2 of CCJ ONsite’s coverage (access part 1 here) of the Air-Cooled Condenser Users Group’s 10th annual meeting (October 2018, Colorado Springs) by Consulting Editor Steve Stultz focuses on air in-leakage, which increases vacuum and contributes to a loss in thermal performance. Ingress of oxygen and carbon dioxide also can cause problems in the steam/water cycle and …

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Factor European experience into O&M practices at US combined cycles, Part V: Drones and robots

Capitalizing on work presented by Xcel Energy at meetings of the HRSG Forum with Bob Anderson, ETD’s Dr Ahmed Shibli and William Moore produced an extensive report for the consultancy’s Group Sponsored Project on drones and robots for powerplant inspection. The highlights of this work were discussed at European Technology Development Ltd’s International Conference on Power Plant Operation and Flexibility, London, …

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7F owner/operators share best practices

The 7F Users Group is a big supporter of CCJ’s Best Practices Awards program. For the last two years, owner/operators affiliated with this organization outpaced participants representing other frames and aeros. In 2018, fourteen 7F plants (chart) shared 26 best practices with their colleagues industry-wide. Recognize that the lion’s share of this material also pertains to most …

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