NFPA 11

NFPA 11 is standard for Low-, Medium-, and High-Expansion Foam. It provides fire protection designers, engineers, and property managers, with and necessary requirements to design, operate, install, test, and maintain expansion and compressed air foam systems.

This industry standard is for fixed, semi-fixed, and portable systems for both interior and exterior hazards. It also helps to ensure that fire protection systems are in working order and ready to flow.

Details of NFPA 1951 Product

Book Title: Standard for Low-, Medium-, and High-Expansion Foam

Publisher Name: National Fire Protection Association

Edition: 2024

SKU: 1124

ISBN-10: 1455931101

ISBN-13: 978-1455931101

FAQs

Q. What does the NFPA 11 standard cover?

A. This standard covers installation, operation, design, testing, and maintenance of low-, medium– and high-expansion foam systems for fire protection. Its rules apply to fixed, semi-fixed, or portable systems for interior and exterior hazards.

Q. What are the changes in the updated edition of NFPA 11?

A. Updated edition of NFPA 11, two new chapters are added with the following changes:
Chapter 6, low-expansion foam and spray systems, incorporates requirements from NFPA 16 that are standard for the installation of foam-water sprinklers and foam-water spray systems.
Chapter 13, testing, inspection, and maintenance offers more robust and comprehensive ITM requirements.
The new updates also define synthetic fluorine-free foam (SPF) testing and research, rim fire testing of non-metallic floating roof structures, and the latest coverage of all types of foam systems.

Q. How often foam systems should be tested or inspected?

A. NFPA 11 requirements for both foam concentrates and foam proportioning systems should be tested and checked at least annually.

Q. What is the NFPA 11 foam concentration induction rate?

A. NFPA 11 foam concentration induction rate of proportioner, expressed as a percentage of the foam solution flow (water plus foam concentrate), should be within minus 0 percent to plus 30 percent of the manufacturer’s listed concentrations, or plus 1 percentage point, whichever is less.

Q. How to do foam concentrate inspection?

A. An inspection should be made of concentrates and their storage containers and tanks for evidence of immoderate decline or sludging.