On November 25, 2018, the National Fire Protection Agency (NFPA) issued an updated version of NFPA 45 – Standard on Fire Protection for Laboratories Using Chemicals. NFPA 45 includes information regarding fire protection requirements for laboratories, laboratory design, vent hood use, and safe quantities of flammable materials allowed to be stored and used in the laboratories. The 2019 edition of the standard includes minor changes from the previous 2015 version. Inspection, testing, and maintenance of fire-extinguishing systems in ductwork and chemical fume hoods has been revised from a specific time interval to a schedule that is deemed suitable for the type of system. Also, a minimum inspection frequency of 1 year has been added for chemical storage. The revision of the standard includes references to NFPA 30 – Flammable and Combustible Liquids Code for quantities of flammable and combustible liquids within liquid storage areas that are indoors.

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