NFPA 11 Standard for Low

NFPA 11, the Standard for Low-, Medium-, and High-Expansion Foam (2024), is an important guide from the National Fire Protection Association (NFPA). It covers how to design, install, operate, test, and maintain foam systems used to fight fires caused by flammable liquids. This standard explains the requirements for different types of foam—low, medium, and high expansion—and applies to fixed, semi-fixed, and portable systems. It is especially important for industries like oil and gas, aviation, and chemical processing to make sure their fire protection systems work well.