ANDRES.RPEREZ

erosion corrosion

Erosion-Corrosion

[vc_row][vc_column][vc_custom_heading text=\”Erosion-Corrosion\” use_theme_fonts=\”yes\”][vc_custom_heading text=\”Introduction\” font_container=\”tag:h3|text_align:left\” use_theme_fonts=\”yes\”][vc_column_text] Erosion degradation on the outside of cold reheat tubes are due to mechanical action, frequently by impingement of wet steam and/or high-velocity flow. Impingement can be controlled by placing baffle plate tray protections upstream the heat exchanger module; high velocity flow can be handled by oversizing inlet nozzle diameter. […]

Erosion-Corrosion Read More »

boundary layer

Steam Blowing Insights

[vc_row][vc_column][vc_custom_heading text=\”Some Insights About Steam Blowing\” use_theme_fonts=\”yes\”][vc_custom_heading text=\”Introduction\” font_container=\”tag:h3|text_align:left\” use_theme_fonts=\”yes\”][vc_column_text] The science behind steam blowing involves the optimization of the drag force of the steam and the chemical conditioning for corrosion control. Fludization Aspects The fluidization potential (drag force) can be enhanced by minimizing the boundary layer thickness of the fluid, all along the surface

Steam Blowing Insights Read More »

Common Boiler Deposits

[vc_row][vc_column][vc_custom_heading text=\”Common Boiler Deposits\” use_theme_fonts=\”yes\”][vc_custom_heading text=\”Description\” font_container=\”tag:h3|text_align:left\” use_theme_fonts=\”yes\”][vc_column_text] Deposition in power plants is most likely the least understood aspect of the operational cycle chemistry applicable to these units during commissioning. Having a complete understanding of the subject is a key factor for the performance of an effective chemical cleaning and the chemical treatment program to

Common Boiler Deposits Read More »

magnetite

Ineffective Cleaning?

[vc_row][vc_column][vc_custom_heading text=\”Ineffective Chemical Cleaning?\” use_theme_fonts=\”yes\”][vc_custom_heading text=\”Introduction\” font_container=\”tag:h3|text_align:left\” use_theme_fonts=\”yes\”][vc_column_text] Ineffective chemical cleaning? Not really… we have encountered situations where engineers and operators complaint about the cleanliness of the boiler as they see a black liquid coming off the blowdown system during first fire. It´s not difficult to get carried away by a first impression and put

Ineffective Cleaning? Read More »

molten salt corrosion

Molten Salt Corrosion

[vc_row][vc_column][vc_custom_heading text=\”Molten Salt Corrosion\” use_theme_fonts=\”yes\”][vc_custom_heading text=\”General Considerations\” font_container=\”tag:h3|text_align:left\” use_theme_fonts=\”yes\”][vc_column_text] Molten salts, commonly used as heat transfer fluids in solar power plants, are essentially eutectic mixtures of sodium-potassium nitrates and the nature of these bonds provides strong ionic conditions and good chemical stability of the thermal solution against metal corrosion. However, they are very hygroscopic and

Molten Salt Corrosion Read More »

chromatic changes

Chromatic Changes

[vc_row][vc_column][vc_custom_heading text=\”Chromatic Changes\” use_theme_fonts=\”yes\”][vc_custom_heading text=\”Recommendation\” font_container=\”tag:h3|text_align:left\” use_theme_fonts=\”yes\”][vc_column_text] Chromatic interactions are a great indicator of the kinetic and chemical reaction throughout the course of a chemical cleaning. It is of significant importance to collect samples from different part of the system during the treatment operation as color changes provide reliable information about the evolution of the

Chromatic Changes Read More »

Boiler Tube

Travelling Across Boiler Tube

[vc_row][vc_column][vc_custom_heading text=\”Travelling Across A Boiler Tube\” use_theme_fonts=\”yes\”][vc_custom_heading text=\”Ready for an amazing journey?\” font_container=\”tag:h3|text_align:left\” use_theme_fonts=\”yes\”][vc_column_text] Take a minute to travel across a preheater boiler tube affected with severe under deposit corrosion and overall oxygen pitting at early stages of development. This journey shall help you to become aware of the importance of having a deep understanding

Travelling Across Boiler Tube Read More »

exfoliation

Exfoliation Corrosion

[vc_row][vc_column][vc_custom_heading text=\”Exfoliation & Lamellar Corrosion\” use_theme_fonts=\”yes\”][vc_custom_heading text=\”During Inspection\” font_container=\”tag:h3|text_align:left\” use_theme_fonts=\”yes\”][vc_column_text] Severe leakages in a steam generator superheater were the leading cause of a major outage a few months after first operation of a power plant. In the course of a visual inspection, the first section of the superheater was observed to develop several sharp perforations,

Exfoliation Corrosion Read More »

CFD Drain System

CFD in Drain System

[vc_row][vc_column][vc_custom_heading text=\”CFD Drain System\” use_theme_fonts=\”yes\”][vc_custom_heading text=\”Description\” font_container=\”tag:h3|text_align:left\” use_theme_fonts=\”yes\”][vc_column_text] A simple modification in the engineering design may turn out to be of significant impact in the way systems perform and increase its functional reliability. This image presents a good example in which the blowdown drain system in a power plant was affected by severe flow-accelerated corrosion

CFD in Drain System Read More »

heat affected zone

Heat-Affected Zone

[vc_row][vc_column][vc_custom_heading text=\”Heat-Affected Zone\” use_theme_fonts=\”yes\”][vc_custom_heading text=\”Circulation Ratio\” font_container=\”tag:h4|text_align:left\” use_theme_fonts=\”yes\”][vc_column_text] Heat-affected zone infiltration may be a potential cause of erosion/corrosion failures of carbon steel piping when exposed to a continuous stream of wet steam or feed water. The problem is associated with high-velocity and turbulences created by the presence of the welding penetration as a flow obstacle.

Heat-Affected Zone Read More »

Scroll to Top