When it comes to seasonal lay-up, most conventional methods fall far short of providing:
Corrosion Protection Conventional Methods
Conventional seasonal lay-up programs often use a nitrite based, nitrogen purge or oil . These methods often do not provide:
The single most important disadvantage of conventional lay-up products is that they are strictly contact corrosion inhibitors. CCI
Contact Corrosion inhibitors protect only the areas that come into direct contact with the metal. In cooling systems this would mean that the overhead spaces, crevices and other to reach spaces are left unprotected. The 'unprotected' areas of the system tend to corrode during down time. Extensive cleaning is required with conventional chemicals before putting the system back into service.
VCI work place and environmentally safe, inexpensive and easy to use products that are superior to conventional methods
Our Rust Protection VCI Products Eliminate the need for Hazardous Chemicals
VCI-1 Powder, VCI-1010 Powder & V-848 Powder are three powder products that contain (Vapor Corrosion Inhibitors) VCI process treatments, hydro-test solutions and VCI powders are perfect for seasonal or long-term lay-ups. VCI consist of blend of compounds that sublimate and create a protective VCI environment in the system. VCI's are adsorbed onto all the enclosed metal surfaces and form a corrosion protective mono-molecular layer. These protect both the anode and cathode sites of the metal surface. (See illustration)
VCI Corrosion Protection Products are Superior to to Conventional Products
Vapor Phase Corrosion Inhibitors VCI's protect metals both in the in liquid phase AND the vapor phase. VCI's attach to and are transported by water and vapor to the metal surface. They provide corrosion protection to all areas that come into contact with air, inside the vessel.
This is significantly more effective corrosion protection then conventional contact corrosion inhibitors.
VCI's are multi-metal formulations that protect various metals including galvanized steel.
Methods of application:
VCI Corrosion Inhibitor POWDERS provide the following features:
Protecting a cooling tower properly during a lay-up period is an important aspect of cooling tower operation. It can improve efficiency of the system during the operation, save time and money if applied properly.