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Grid meltdown forces cold-weather prep to front burner

If the CCUG 2021 Day One roundtable on cold-weather preparation is any guide, winterization continues to vex plant personnel. Many of the issues can be traced to inadequate design bases and insufficient equipment. However, the root cause appears to be building “outdoor” facilities in locations which clearly require far better protection against protracted frigid conditions. …

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Confined-space best practices distill out of safety discussion

The Combined Cycle Users Group (CCUG) opened Day One of its 2021 virtual conference with a roundtable discussion on confined-space safety. Arguably, it’s a topic perhaps even more essential to onsite staff as other responsibilities shift to offsite personnel, contractors, and OEM reps. The discussion was facilitated by Steve Hilger, plant manager at Dogwood Energy …

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What is an acceptable amount of sagging/deflection for superheater tubes?

An international user writes via the forum, We have a horizontal dual-pressure HRSG (Alstom India) with bypass stack and diverter damper. A recent inspection of the HP section found that some tubes and face plates were “sagging” (photos). Those tubes are misaligned because of this. The same observation was made during the previous inspection, with …

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KinetiClean presents new option for HRSG tube cleaning

Calling it “safer, faster, and deeper” than dry-ice blasting, Jeff Bause, CEO, Groome Industrial Service Group, introduced participants in the 2021 virtual conference of the Combined Cycle Users Group to KinetiClean HRSG tube cleaning, a patented kinetic shockwave technique widely used in other industries but new to combined cycles. It was developed by Explosive Professionals …

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Acoustic monitoring proves worth for early detection of HRSG tube leaks

Boiler tube leaks have been plaguing fossil-fired powerplants for decades. HRSGs, especially those which cycle frequently, are no exception. Plants experiencing recurring tube leaks should analyze for root cause and make the necessary modifications. If that’s too expensive, another option is to install a sophisticated acoustic monitoring system (AMS) to at least detect leaks earlier, …

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Shock waves deep clean HRSGs

Twenty years ago, few people probably thought that a tube cleaning technique for HRSGs attached to gas-fired turbines would be adapted from those used for solid-fuel boilers. Yet that’s where we are today. Carl Wise, Thompson Industrial Services, and Vince Barreto, PowerPlus Cleaning Systems, showed attendees at the HRSG Forum Supplier Workshop, Oct 7, 2021, …

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Ovation Users Group

Emerson Power & Water Solutions held its 2021 Ovation Users Group conference virtually, focusing on current industry and business trends, projects, and services. Robert Yeager, president of Power & Water Solutions, and Al Eliasen, president of Emerson’s OSI Digital Grid Solutions, highlighted how the 2020 acquisition of Open Systems International Inc helps the company meet …

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Resource qualification an important step in contractor evaluation

Average length of service of the contractor’s employees and the skill levels of the various tradespeople are important qualification metrics, advises Bill Kitterman, GM, Bremco Inc, a recent addition to the SVI family of companies. He recommends that you ask for and carefully review resumes. Contractors worth considering for your work should have them ready …

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