How Does Nitrogen Inhibit Corrosion in Fire Protection Systems?
Nitrogen as a supervisory gas prevents deterioration of galvanized and/or black steel dry and pre-action fire protection systems (FPS) by: • Stopping further deterioration of the zinc layer in galvanized piping and preserving the integrity of previously damaged piping. • Protecting galvanized piping from corrosion regardless of whether or not there are breaches in the zinc layer exposing the underlying black steel. • Facilitating complete dehydration of the system piping even after flow testing. • Eliminating the possibility of oxygen-driven electrochemical corrosion and microbiologically influenced corrosion (MIC).
