What is the shipboard concentrate percentage for AFFF?

The correct shipboard concentrate percentage for Aqueous Film-Forming Foam (AFFF) is 6%. AFFF is a fire-suppressing agent used on ships to combat flammable liquid fires, particularly those involving hydrocarbons. The 6% concentrate is formulated to create a sufficient blanket that suppresses vapor and cools the surface, effectively preventing reignition and promoting safety.

This specific percentage is based on established military guidelines and standards for fire suppression in naval operations. Using a concentrate percentage of 6% ensures optimal performance in various firefighting scenarios that crew members may encounter while aboard a vessel.

While other percentages such as 3%, 5%, and 10% may be associated with different firefighting agents or specific applications, they do not provide the same efficacy for AFFF when used aboard ships. A 3% concentration, for example, may not adequately suppress the flames and vapor production for the types of fires encountered with fuels stored on ships. Similarly, 5% may not create the necessary film-forming ability needed in certain circumstances. A 10% concentration, while possibly effective in some situations, could also lead to overuse of the foam and unnecessary operational costs. Thus, 6% is the established standard