A large parabolic trough solar power plant in the southwest part of the U.S. uses two 125 megawatt (net) steam turbine generators to generate more than 250 megawatts of energy. Since the power plant uses solar energy to create steam that drives a turbine, the plant faces many of the same concerns as a conventional fossil fueled power plant.
Therefore, it is critical to safely monitor and measure the quality of the steam and water used when generating steam. For this reason, a conventional steam and water analysis system (SWAS) was part of the original construction.Read More
Analysis of process steam and condensate are important aspects of any chemical processing or refining operation. Impurities in these systems such as silica, sodium, and chloride, or deviations from target pH values, can wreak havoc on a plant’s operations. Online analyses of parameters such as pH and cation conductivity are commonly performed to monitor the condition of process water and steam.
In order to achieve accurate analysis, EPRI, ASTM and ASME recommend cooling of water samples to 77°F (25°C) to ensure consistent, accurate analysis. Unfortunately, cooling water temperatures in process plants commonly exceed 100°F (38°C). While this is acceptable to provide rough cooling, it is insufficient to properly cool samples for online pH, cation conductivity or similar analyzers.Read More
A steam and water analysis system (SWAS) conditions, analyzes and monitors the chemical properties of the steam and water used to generate electricity. A well-designed SWAS maximizes efficiency and output while also protecting plant assets, operators and the environment.Read More
Shutting down a power plant is a complex process that can be stressful and complicated. But having a step-by-step process to follow can simplify the entire procedure, especially when it comes to shutting down and servicing steam and water sample conditioning systems or analyzers.Read More
The steam and water analysis system (SWAS) is the nerve center of any power plant, and any deviation from optimal operation and consistent steam and water sampling can lead to added time and expense. In some cases, that might take the form of an overnight shift to make up for a marginally functioning SWAS.
Adding a shift is a considerable commitment and, understandably, not one plant management wants to undertake. However, alleviating this concern is possible with regular, proactive SWAS panel maintenance.Read More
Maintaining proper, slightly alkaline pH levels in boilers and Heat Recovery Steam Generators (HRSGs) is critical in preventing boiler tube corrosion that can be costly to an operation and potentially harmful to employees.Read More
As the industry leader in steam and water analysis systems (SWAS) for power generation, we maintain and service those systems including the analyzers – from any brand – in power plants nationwide. Our long history and breadth of experience has given us a unique vantage point on the types and brands of analyzers most requested and used in North America.Read More
Magnetite is a form of iron particulate that naturally forms on the inside of steam and water pipes. In many aging power plants during plant startup and cycling, particles of the coating can shed – known as a crud burst or iron throw. These magnetite particles can cause issues and damage within the plant’s steam and water analysis system (SWAS) by jamming and plugging sample conditioning components and analyzers. And when the SWAS does not operate properly, the water chemistry for the whole plant is at risk.Read More
A number of industries routinely conduct solid and powder sampling, ranging from cement and food and beverage, to pharmaceutical, petrochemical, mining, oil and gas, and power generation. This list illustrates the wide variety of solid and powder sampling applications, and it also proves that there isn’t a one-size-fits-all sampling solution.Read More
Because many of the nation’s power plants were built some time ago, it often is a challenge for project managers to update the steam and water analysis (SWAS) system by retrofitting the plant with needed new technology within the existing facility footprint.Read More