4 The record articles

4 The Record is a publication from ALL4’s team that takes an in-depth look at technical and regulatory topics.

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Combustible Dust – NFPA 660 is Here

Posted: July 23rd, 2025

The National Fire Protection Association (NFPA) issued a new, consolidated standard for Combustible Dusts and Particulate Solids as NFPA 660 (effective December 6, 2024). A combustible dust is any finely divided solid material that presents a flash fire or explosion […]

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Recent Congressional Review Act (CRA) Activity

Posted: July 17th, 2025

This article is a brief update on recent developments related to Congress’s disapproval of a few Biden administration air quality-related rules. The Congressional Review Act (CRA) was passed into law in 1996 to strengthen congressional oversight of federal agencies’ rules. […]

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Are You in the Know on the Refrigerant Rules?

Posted: July 10th, 2025

On January 1, 2026 facilities with refrigeration appliances, including air conditioners, refrigerators, chillers, and freezers, with a full charge of 15 pounds or more of refrigerant may be subject to new leak repair requirements under 40 CFR Part 84, Subpart […]

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