NFPA 69, Standard on Explosion Prevention Systems

Apply NFPA 69 to help prevent explosions due to combustible dust particles, gases, or vapors.

Combustible dust, gases, and vapors produced in industrial settings can pose a significant safety hazard. NFPA 69, Standard on Explosion Prevention Systems, offers definitive guidance on explosion protection and prevention systems.

This document is applicable to woodworking, grain processing (including sugar), and machining facilities, where combustible dust can spark explosions. It also covers facilities in which flammable liquids are used or petrochemical processing takes place -- and explosions due to combustible gases or vapors are a concern.

Protected equipment includes pipes, ductwork, and dust collection systems.

Systems for explosion prevention, explosion isolation, oxidant concentration control, fuel concentration control, and ignition control are all designed in accordance with NFPA 69, which is also compatible with the terminology of NFPA 3, Recommended Practice for Commissioning and Integrated Testing of Fire Protection and Life Safety Systems, and other standards.

Essential for system designers, safety officers, insurers, municipal and state inspectors, and other professionals, NFPA 69 provides valuable insight on:

• Installing an explosion isolation valve or system
• Designing equipment to contain an explosion
• Controlling your process to help ensure an explosive atmosphere doesn't develop
• Installing an explosion suppression system
• Controlling ignition sources in your process before an explosion occurs

The 2024 edition includes:

• Standardized terminology and requirements for automatic shutdown and orderly shutdown
• Added requirements for dust flame-arresting devices
• Revised requirements on safety instrumented systems
• Added language to address elevated temperatures on close-clearance rotary valves
• Revised requirements on battery backup for control panels
• Consolidation of all inspection, testing, and maintenance requirements for various types of equipment into Chapter 15

2024 (9781455931163)

2019 (9781455922611)