Team-CCJ – Page 71 – Combined Cycle Journal

Test program identifies ways to improve cooling-tower fan reliability

EPRI Technical Executive Sam Korellis opened the CCUG2020 Week Four agenda with a review of EPRI’s cooling-tower (CT) fan-motor-drive and gearbox field evaluation program and its implications for CTs serving more than 800 units at about 300 powerplants. Many CTs are equipped with multiple fans which start and stop depending on load and ambient temperature. […]

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Improving the life safety of CO2 fire extinguishing systems

CCUG / By Team-CCJ

The main messages from the presentation on fire suppression systems during Week Four of the CCUG2020 meeting, by ORR Protection’s Chuck Hatfield, are that NFPA Code requirements include the life (human) safety and reliability of suppression equipment, whether low- or high-pressure type; and that the industry is “moving away from CO2-based suppression to water-mist systems.” One

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Proper chemistry key to mitigating damage attributed to flexible operations

CCUG / By Team-CCJ

Steve Shulder, EPRI’s subject matter expert on water and steam chemistry addressed chemistry-related damage from flexible operations during Week Four of the CCUG2020 program. Thorough to a fault, most of Shulder’s slides are laden with bullet points, likely summarizing chapters of EPRI reports on the subject. It’s almost impossible to condense the 45-slide deck into

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Innovations in vertical-pump vibration monitoring

CCUG / By Team-CCJ

Hydro Solutions’ first presenter during Week Four at CCUG2020, Ares Panagoulias (“Innovations in vertical-pump vibration monitoring”), reviewed a relatively new, but proven, capability to monitor vibration of submerged vertical pumps using a single-axis piezoelectric accelerometer directly wired to a wireless transmitter with its own power source (Fig 1). Data go to a “cloud-based” app. Included

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Mitsubishi Power atop the leader board in gas-turbine sales, energy storage

Best Practices / By Team-CCJ

Mitsubishi Power (MP) finished 2020 with the highest market share for large frame gas turbines in the Americas, according to McCoy Power Reports, a power-industry market data service. The company’s sales totaled 3288 MW, 54% of total orders in the region. More than half MP’s 2020 orders include a hydrogen performance guarantee or have a

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Turbine Tip 13: How to test your emergency lube-oil pumps

Best Practices / By Team-CCJ

O&M Clinic for Legacy GE Gas Turbine Users Turbine Tip No. 13 by Dave Lucier, owner/GM, PAL Turbine Services, applies to General Electric package power plants (PPP), including Model Series 5001P, 6001, and 7001. GE gas turbines are equipped with dc emergency lube-oil pumps (GE designate 88QE). This device is controlled at the motor control

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Turbine Tip 11: Compartment heaters not for creature comfort

Best Practices / By Team-CCJ

O&M Clinic for Legacy GE Gas Turbine Users Turbine Tip No. 11 by Dave Lucier, owner/GM, PAL Turbine Services, applies to General Electric package power plants (PPP), including the following: Model Series 5001, 6001, and 7001. GE installed heaters in the accessory and turbine compartments (combustion-chamber area) to maintain their space temperatures at levels that

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Maximizing the lifetime of gas-turbine hot parts

Best Practices / By Team-CCJ

If you’re having difficulty with your F-class gas turbine OEM when it comes to repair of hot-gas-path (HGP) components, MD&A wants you to know they not only have the experience you are seeking, but also enhancements, which will extend service life, plus better transparency and customer oversight throughout the repair process. In the “Extending Service

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The road to 100% reliability in liquid-fuel starts, transfers on dual-fuel gas turbines

Best Practices / By Team-CCJ

The spate of lawsuits filed in the aftermath of the 2021 winter storm that left millions in Texas without power for days and sent natural-gas prices soaring to their highest levels in years—up nearly 17,000% in some cases, according to a Wall Street Journal report—testify to the value of having dual-fuel gas turbines as part

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Desert Basin reports experience, success with first 501F FlameTOP7 upgrade

Best Practices / By Team-CCJ

The numbers are eye-opening: 20-MW gain in simple-cycle output, 3.8% heat-rate improvement in simple cycle, a stable GT turndown to 38%, and less than 9-ppm NOx across the load range. That’s what PSM and Salt River Project’s (SRP) Desert Basin Generating Station reported at the 2021 501F Users Conference after upgrading a 2001 vintage Siemens

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