Chemical Stripping Lines

Turn Key supply of automated Chemical Stripping Lines to Land Based Gas Turbine Maintenance, Repair and Overhaul

Just like in aero engines, the blades and vanes in land-based gas turbines are protected by a metallic coating. After some time in service the coating has to be removed (=stripped) and reapplied. Galvatek supplies equipment for the removal of the metallic coating within the gas turbine maintenance process for power plants.

Case Alstom: Two stripping lines for land based gas turbine MRO

NDT and FPI testing lines for gas turbine maintenance

CompactLine for fast and easy installations

Due to the typical component size and maintenance volumes of gas turbines, Galvatek’s stripping plants are typically compact packages. CompactLines are delivered preassembled and tested at our manufacturer’s premises and brought to site ready to be installed, thereby minimising costs arising from disruption to production.

An overall view of a chemical stripping line for removing coating of gas turbine vanes and blades.
Coating removal line for gas turbine´s blades and vanes.
Galvatek stripping line with automatic transporter, closed tanks and Candovent ventilation system.
Coating removal for electricity generating turbines.
Automated Galvatek CompactLine process line for stripping land-based turbines.

Coating dissolution, alkaline, rinsing and drying

Before entering the stripping line, gas turbine components are usually cleaned by grit blasting or a similar manual cleaning method.

The first step in the automated stripping line is dissolving the coating material using a heavy acidic solution, such as hydrochloric acid (HCI). After the acid process, the parts are rinsed to remove acid residues. Alkaline, typically caustic soda (NaOH) or similar, is then used to attack on reaction products. The alkaline process is followed by rinsing to remove alkaline residues. The final step is usually drying, which facilitates the inspection of components, or process sequence repetition if needed.

The typical number of process tanks is 1-3, which are supplemented with the above-mentioned rinsing and drying. The Candovent ventilation system and Galcont automation system make Galvatek´s stripping plants extremely environmental friendly, as well as easy and safe to use.

Stripping plant features

Galvatek’s MRO cleaning equipment as well as gas turbine stripping plants are individually scaled and designed for each application. For example, special equipment can be supplied for stripping the blade component only partially, leaving the rest of the blade untouched. Special ventilation equipment is included for treating highly corrosive fumes, as well as special bath circulation and filtration. The lengths of tanks for stripping plants are typically up to 2 meters, but larger tank sizes can also be supplied.

Process types:

  • Titanium stripping
  • HCl stripping
  • Acid stripping

Featured technical innovations

Automation - Galcont™

Galvatek's Galcont™ process automation system has been constantly developed and improved for already four decades to meet ever-increasing demands in surface treatment plant control.

Ventilation System - Candovent™

Galvatek’s Candovent™ ventilation system allows placing the surface treatment line anywhere in the production layout, without the need to build an encapsulated room around it.

Energy Efficiency and Environmental Friendliness

Every aspect of Galvatek plants has been optimized with energy efficiency and environmental friendliness in mind.

Process Tanks

Process tanks have to be able to withstand many different types of chemicals like strong acids or alkaline. Durability and sustainability are emphasized in Galvatek's tanks.

Want to hear more? Contact us and find out what we can do for you.

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Jarno Virtanen

Managing Director
+358 3 526 6600