NFPA 484: Standard for Combustible Metals
Current Edition: 2015 Next Edition: 2018

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What is NFPA 484?
NFPA 484: Document Scope
1.1* Scope. This standard shall apply to the production, processing, finishing, handling, recycling, storage, and use of all metals and alloys that are in a form that is capable of combustion or explosion. A.1.1 Under proper conditions, most metals in the elemental form will react with oxygen to form an oxide. These reactions are exothermic. The conditions of the exposure are affected by the temperature of the metal (whether it is in large pieces or in the form of small particles), the ratio of its surface area to its total weight, the extent or presence of an oxide coating, the temperature of the surrounding atmosphere, the oxygen content of the atmosphere, the moisture content of the atmosphere, and the presence of flammable vapors. 1.1.1 The procedures in Chapter 4 shall be used to determine whether a metal is in a noncombustible form. 1.1.2 Combustible Metal Powder or Dust. 1.1.2.1 This standard also shall apply to operations where metal or metal alloys are subjected to processing or finishing operations that produce combustible powder or dust. 1.1.2.2 Operations where metal or metal alloys are subjected to processing or finishing operations that produce combustible powder or dust shall include, but shall not be limited to, machining, sawing, grinding, buffing, and polishing. 1.1.3* Metals, metal alloy parts, and those materials, including scrap, that exhibit combustion characteristics of alkali metals, aluminum, magnesium, tantalum, titanium, or zirconium shall be subject to the requirements of the metal whose combustion characteristics they most closely match. A.1.1.3 Products or materials that have the characteristics of a combustible metal should have a material safety data sheet (MSDS) that describes those burning characteristics. The manufacturer or technical personnel with knowledge of the hazards associated with the metal should be consulted to characterize the hazards of the metal. (See Table A.1.1.3(a). and Table A.1.1.3(b)) 1.1.4 Metals, metal alloy parts, and those materials, including scrap, that do not exhibit combustion characteristics of alkali metals, aluminum, magnesium, niobium, tantalum, titanium, or zirconium are subject to the requirements of Chapter 14. 1.1.5* This standard shall not apply to the transportation of metals in any form on public highways and waterways or by air or rail. A.1.1.5 Regulations for the domestic shipment of dangerous goods (lithium and lithium alloy materials are so classified) are issued by the Department of Transportation (DOT), 49 CFR 100–199, which has specific responsibility for promulgating the regulations. These regulations are updated and published yearly by DOT. International shipments are regulated by the United Nations, International Air Transport Association, International Maritime Organization, and other national agencies. 1.1.6 This standard shall not apply to the primary production of aluminum, magnesium, and lithium. 1.1.7 This standard shall apply to laboratories that handle, use, or store more than 0.23 kg (12 lb) of alkali metals or 0.907 kg (2 lb) aggregate of other combustible metals, excluding alkali metals. 1.1.8 All alkali metals and metals that are in a form that is water reactive shall be subject to this standard. 1.1.9* If the quantity of a combustible metal listed in Table 1.1.9 is exceeded in an occupancy, the requirements of this document shall apply. A.1.1.9 A combustible metal is a metal that meets the criteria for combustibility as defined in Chapter 4. The quantities listed in Table 1.1.9 are for the entire occupancy, not for individual fire control areas.
This standard applies to the production, processing, finishing, handling, recycling, storage, and use of all metals and alloys that are in a form that is capable of combustion or explosion, as well as to operations where metal or metal alloys are subjected to processing or finishing operations that produce combustible powder or dust. Official document scope
What does NFPA 484 address?
Coverage includes requirements for determining combustibility or explicability of a metal, metal, powder, or metal dust; determining dust explosion and flash-fire hazard areas; a performance-based design option; fire prevention, fire protection, and emergency response; and recycling facilities. Separate chapter focus on alkali metals, aluminum, magnesium, niobium, tantalum, titanium, and zirconium.

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