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NFPA 484 2022

NFPA 484 2022

$80.71

NFPA 484: Standard for Combustible Metals

Published By Publication Date Number of Pages
NFPA 2022 165
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Apply NFPA 484, Standard for Combustible Metals, to help ensure that you meet the most advanced fire and explosion safety requirements related to combustible metals and metal dusts. NFPA 484, Standard for Combustible Metals, was developed in response to fires where fire suppression water was used inappropriately, often with disastrous results. The standard includes widely accepted safety requirements for any metal that meets its definition of a combustible metal, including alkali metals, aluminum, hafnium, magnesium, niobium, tantalum, titanium, and zirconium. NFPA 484, Standard for Combustible Metals, addresses the production, processing, finishing, handling, storage, use, and recycling of all metals and alloys that are in a form capable of combustion or explosion. Make sure you understand and follow the requirements for proper dust collection, housekeeping, and identification of potential ignition sources. It\’s important to understand that fire and explosion hazards might be present due to operations involving 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. Operations where metal or metal alloys are subjected to processing or finishing operations that can produce combustible powder or dust are also covered by this standard. Changes throughout the 2022 edition of NFPA 484, Standard for Combustible Metals, can help you apply the standard correctly in different work environments. This edition of the standard has been reorganized so that the first nine chapters correlate with the topics covered in NFPA 652, Standard on the Fundamentals of Combustible Dust, as well as to organize the remaining chapters to ensure the first nine chapters do not conflict with other sections of the standard. Chapter 13, Additive Manufacturing, was also revised to address the following: The growing utilization of metal powders in additive manufacturing Dust hazard analysis Location of emergency shutdown controls Harvesting printed objects Powder storage Operator training Further updates for the 2022 edition of NFPA 484, Standard for Combustible Metals, include the following: A new requirement for the Kst value to be doubled for certain metals — unless their explosibility characteristics are determined in a 1 m3 or larger test vessel — has been added, in addition to annex material to help explain this requirement. The requirements for fire detection for dry-type air-material separators have been revised to allow for the use of methods other than surface-mounted devices and to require that all filter locations (if present) be monitored. Chapter 15, Legacy Metals, has been reorganized to consolidate the requirements that apply to all legacy metals.

PDF Catalog

PDF Pages PDF Title
11 Chapter 1 Administration
1.1 Scope.
1.2 Purpose.
12 1.3 Application.
1.4 Conflicts.
1.5 Retroactivity.
1.6 Equivalency.
1.7 Units and Formulas.
Chapter 2 Referenced Publications
2.1 General.
2.2 NFPA Publications.
13 2.3 Other Publications.
14 2.4 References for Extracts in Mandatory Sections.
Chapter 3 Definitions
3.1 General.
3.2 NFPA Official Definitions.
3.3 General Definitions.
18 Chapter 4 General Requirements
4.1 General.
4.2 Objectives.
19 Chapter 5 Hazard Identification — Determination of the Combustibility or Explosibility of a Metal, Metal Powder, or Metal Dust
5.1 Responsibility.
5.2 Overview.
5.3 Basic Material Characterization.
5.4 Determination of Combustibility.
5.5 Determination of Explosibility.
20 5.6 Use of Test Data for Hazard Analysis.
5.7 Determination of Flash -Fire Potential. (Reserved)
5.8 Organometallic Materials. (Reserved)
Chapter 6 Performance-Based Design Option
6.1 General Requirements.
21 6.2 Design Objectives.
6.3 Performance Criteria.
6.4 Design Scenarios.
22 6.5 Evaluation of Proposed Design.
6.6 Retained Prescriptive Requirements.
Chapter 7 Hazard Analysis
7.1 General Requirements.
7.2 Dust Hazard Analysis (DHA).
23 7.3 Molten Metal Hazard Analysis.
24 7.4 Risk Evaluation.
7.5 Dust Explosion and Flash-Fire Hazard Areas.
Chapter 8 Management Systems
8.1 Retroactivity.
8.2 General.
8.3 Operating Procedures and Practices.
25 8.4 Housekeeping.
8.5 Hot Work.
8.6 Personal Protective Equipment (PPE).
8.7 Inspection, Testing, and Maintenance.
8.8 Training and Hazard Awareness.
8.9 Contractors.
26 8.10 Emergency Planning and Response.
8.11 Incident Investigation.
8.12 Management of Change.
8.13 Documentation Retention.
8.14 Management Systems Review.
8.15 Employee Participation.
Chapter 9 Hazard Management: Mitigation and Prevention
9.1 Inherently Safer Designs.
9.2 Building Design.
29 9.3 Equipment Design.
32 9.4 Ignition Source Control.
35 9.5 Pyrophoric Dusts. (Reserved)
9.6 Dust Control.
36 9.7 Explosion Prevention/Protection.
9.8 Fire Protection.
37 Chapter 10 Fire Prevention, Fire Protection, and Emergency Response
10.1 Retroactivity.
10.2 General.
10.3 Operating Procedures and Practices.
10.4 Fire Prevention.
38 10.5 Fire Protection.
39 10.6 Training and Hazard Awareness.
40 10.7 Emergency PreparednessPlanning/Preparedness and Response.
41 10.8 Emergency Response.
42 10.9 Incident Investigation.
Chapter 11 Housekeeping
11.1 Retroactivity.
11.2 Applicability.
11.3 Housekeeping Plan.
11.4 Cleanup Procedures for Fugitive Dust Accumulations.
11.5 Cleanup of Spilled Dust, Fine or Powder.
11.6 Vacuum Cleaning.
11.7 Compressed Air Cleaning Requirements.
43 11.8 Water-Cleaning Requirements.
11.9 Cleaning Frequency.
11.10 General Precautions.
Chapter 12 Control of Ignition Sources
12.1 Retroactivity.
12.2 Hot Work.
12.3 Control of Friction Hazards.
44 12.4 Electrical Area Classification.
12.5 Portable Electrical and Electronic Equipment.
Chapter 13 Pneumatic Conveying, Dust Collection, and Centralized Vacuum Cleaning Systems
13.1 Retroactivity.
13.2 Dust Collection.
50 13.3 Centralized Vacuum Cleaning System.
13.4 Portable Vacuum Cleaners.
13.5 Pneumatic Conveying of Powder.
51 13.6 Powder Collection.
52 Chapter 14 Nanometal Powders
14.1 Retroactivity.
14.2 General.
14.3 Nanoparticle Production Processes.
14.4 Equipment Design and Operation.
53 14.5 Housekeeping.
Chapter 15 Additive Manufacturing
15.1 Retroactivity.
15.2 General Requirements.
15.3 Additive Manufacturing Equipment and Operations.
55 15.4 Equipment and Object Cleaning.
15.5 Training.
15.6 Emergency Response.
56 Chapter 16 Alkali Metals
16.1 General Provisions.
16.2 Facility Design Requirements.
16.3 Primary Metal Production.
57 16.4 Powder Production. (Reserved)
16.5 End Users of Powder. (Reserved)
16.6 Processing and Handling.
16.7 Machining, Fabrication, Finishing, and Media Blasting.
16.8 Storage and Handling.
58 16.9 Fire and Explosion Protection.
16.10 Other. (Reserved)
Chapter 17 Legacy Metals
17.1 General.
59 17.2 Facility Design Requirements.
17.3 Primary Metal Production (Smelting).
60 17.4 Powder Production.
63 17.5 End Users of Powder.
64 17.6 Processing and Handling.
65 17.7 Machining, Fabrication, Finishing, and Media Blasting.
67 17.8 Storage and Handling.
69 17.9 Fire and Explosion Prevention.
70 Chapter 18 Other Metals
18.1 General Provisions.
18.2 Facility Design Requirements.
18.3 Primary Metal Production.
71 18.4 Powder Production.
18.5 End Users of Powder.
72 18.6 Processing.
73 18.7 Machining, Fabrication, Finishing, and Media Blasting.
18.8 Storage and Handling.
74 18.9 Fire and Explosion Prevention.
18.10 Other. (Reserved)
Chapter 19 Recycling and Waste Management Facilities
19.1 General Provisions.
19.2 Recycling and Waste Management of Combustible Metal — Collection, Storage, and Handling of Fines Generated During Scrap Receiving, Storage, Recycling, and Waste Treatment.
75 19.3 Storage of Combustible Metals for Recycling and Waste Management.
76 19.4 Sample Identification and Collection for Metals in a Combustible Form.
19.5 Personal Protective Equipment (PPE).
19.6 Reactivity.
19.7 Management of Change.
19.8 Facility Design Requirements.
19.9 Emergency Preparedness.
19.10 Processing.
77 19.11 Fire and Explosion Prevention.
78 Annex A Explanatory Material
138 Annex B Electrically Conductive Floors
Annex C Supplementary Information on Magnesium
140 Annex D Design for Dust Concentration Control in Ductwork
142 Annex E Supplementary Information on Tantalum
145 Annex F Supplementary Information on Titanium
147 Annex G Supplementary Information on Zirconium
150 Annex H Extinguishing Agents That Should Not Be Used on Lithium Fires
Annex I Testing for Detailed Characterization of Explosive Behavior of Materials
152 Annex J Informational References

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NFPA 484 2022
$80.71