Archive: O&M

520004dd6325f-18-01

Focus on O&M (April 2008)

Tag-teamed seawater cleanup; New cooling towers to improve river’s health; Back to school

520004dd56562-64-01

Extend EOH tracking to the entire plant

Predicting combined-cycle system longevity and determining optimal maintenance intervals at the same time is difficult: It requires balancing repair costs against the risk of trying to squeeze that last bit of life out of some component before it fails. One solution to the problem is to extend coverage of an equivalent operating hours (EOH) preventive management program for turbines to the entire plant.

520004dd55e2b-52-01

Desuperheating valves take the heat

Hot reheat steam bypass actuators are some of the most critical, yet least understood components in a typical combined-cycle plant. If you’re using pneumatic actuators to stroke your main steam or hot reheat bypass valves in a cascading bypass system, you’re behind the times. Here’s a way to get better control of the bypass process, shorten unit start-up and train blending times, and decrease your plant’s heat rate—all at the same time.

520004dd559bc-36-01

Maintaining water sample panels improves plant availability

Even comedian Rodney Dangerfield got more respect than many plant water sample panels do. But power plants ignore sample panels at their peril. Those sample panels, and readings of the on-line analyzers they support, identify when multi-million-dollar systems have a problem that demands immediate attention.

520004dd554d1-18-01

Focus on O&M (March 2008)

New CIP standards leave questions unanswered/Solving common analyzer problems/Qualifying rebuild shops

520004dd48ed2-51-01

The case for cathodic protection

All fossil fuels carry some risk with their reward of an energy density that’s sufficient for producing electricity economically. For coal and natural gas, that threat is a fire or explosion. However, the risk of an explosion isn’t limited to gas-fired plants. Gas poses a threat to any plant that uses the fuel, even in small quantities for heating. Here’s an overview of what you should be doing to keep gas pipelines from corroding and exploding.

520004dd48bde-46-01

Who’s doing coal plant maintenance?

POWER has reported on several EUCG benchmarking studies over the past several years. This month we examine the maintenance staffing of 45 coal plants reported by 13 EUCG member utilities. If you benchmark your plants or fleet, as you should, some of the study’s results challenge what is considered conventional wisdom.

520004dd48633-30-04

Alliant Energy sweeps EUCG Best Performer awards

The Fossil Productivity Committee of the EUCG conducts an annual analysis of its member plants’ operating results and selects the Best Performer in the categories of small and large coal plants. For 2007, Alliant Energy’s Lansing and Edgewater Generating Stations took the top spots—the first time in recent history that a single utility claimed both awards.

520004dd482dc-22-01

TVA’s Shawnee Fossil Plant Unit 6 sets new record for continuous operation

Shawnee’s new 1,093-day long-run record is a testament to the plant’s highly qualified and trained staff, excellent operations and maintenance processes, and the quality leadership required to keep all the moving parts pointed in the right direction. If running a power plant is a team sport, then the staff of Shawnee are in a league of their own.

520004dd47cf8-12-01

Focus on O&M (February 2008)

Survey captures industry’s carbon concerns; Sequestering coal plant emissions; Comparing mercury measurement methods