Combustible dust NFPA standards changed overnight when the December 2024 NFPA 660 consolidation made eight industry-specific standards obsolete. Facilities that followed NFPA 654, 484, or 655 for decades now face fresh compliance requirements under a unified framework. Key Takeaways: NFPA 660 replaced eight predecessor standards (652, 654, 664, 484, 655, 61, 120, 651) effective December … Read more