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Standard for Combustible Dusts

Please note:  NFPA 660 is in the Fall 2024 cycle due to the Combustible Dust Document Consolidation Plan (consolidation plan) as approved by the NFPA Standards Council.  As part of the consolidation plan, NFPA 660 (combining Standards NFPA 61, NFPA 484, NFPA 652, NFPA 654, NFPA 655, and NFPA 664) is open for public input with a closing date of January 5, 2023.

To review the NFPA 660 preliminary draft and make suggested changes, select the link below titled: "Submit a Public Input".

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Happy holidays! NFPA® will be closed December 24–January 2. We wish you all a safe and enjoyable holiday week, and look forward to assisting you in the new year.

NFPA 660: News

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Happy holidays! NFPA® will be closed December 24–January 2. Place your orders by Monday, December 12, to ensure domestic delivery by year end. We wish you all a safe and enjoyable holiday week, and look forward to assisting you in the new year.

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