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NFPA 69 2019

NFPA 69 2019

$80.71

NFPA 69, Standard on Explosion Prevention Systems

Published By Publication Date Number of Pages
NFPA 2019 97
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Apply NFPA 69 to help prevent explosions due to combustible dust particles, gases, or vapors. Combustible dust, gases, and vapors produced in industrial settings can pose a significant safety hazard. NFPA 69, Standard on Explosion Prevention Systems, offers definitive guidance on explosion protection and prevention systems. This document is applicable to woodworking, grain processing (including sugar), and machining facilities, where combustible dust can spark explosions. It also covers facilities in which flammable liquids are used or petrochemical processing takes place — and explosions due to combustible gases or vapors are a concern. Protected equipment includes pipes, ductwork, and dust collection systems. Systems for explosion prevention, explosion isolation, oxidant concentration control, fuel concentration control, and ignition control are all designed in accordance with NFPA 69, which is also compatible with the terminology of NFPA 3, Recommended Practice for Commissioning and Integrated Testing of Fire Protection and Life Safety Systems, and other standards. Essential for system designers, safety officers, insurers, municipal and state inspectors, and other professionals, NFPA 69 provides valuable insight on: Installing an explosion isolation valve or system Designing equipment to contain an explosion Controlling your process to help ensure an explosive atmosphere doesn’t develop Installing an explosion suppression system Controlling ignition sources in your process before an explosion occurs Changes in the 2019 edition include: A revised adjustment for Limiting Oxygen Concentration (LOC) values obtained in flammability tubes, reconfirming a change made by a TIA New requirements that consider the concentration variation with time and location within the protected enclosure — as well as variations in operating conditions and material loadings — when using the combustible concentration reduction method of explosion prevention A new section on Safety Instrumented Systems (SIS), along with a requirement that explosion prevention system controls installed after November 5, 2021 be implemented as an SIS Added annex material that provides example calculations on how to estimate the LOC for a fuel or a fuel mixture Follow the field’s best guidance for the prevention and control of deflagrations in the latest edition of NFPA 69.

PDF Catalog

PDF Pages PDF Title
2 Important Notices and Disclaimers
3 Additional Important Notices and Disclaimers
9 Chapter 1 Administration
1.1 Scope.
1.2 Purpose.
1.3 Application.
10 1.4 Retroactivity.
1.5 Equivalency.
Chapter 2 Referenced Publications
2.1 General.
2.2 NFPA Publications.
2.3 Other Publications.
11 2.4 References for Extracts in Mandatory Sections.
Chapter 3 Definitions
3.1 General.
3.2 NFPA Official Definitions.
3.3 General Definitions.
13 Chapter 4 General Requirements
4.1 Goal.
4.2 Objectives.
4.3 Compliance Options.
Chapter 5 Performance-Based Design Option
5.1 General Requirements.
14 5.2 Performance Criteria.
Chapter 6 General Prescriptive Requirements
6.1 Methods.
6.2 Limitations.
6.3 Factors to Be Considered.
6.4 Plans.
6.5 System Acceptance.
15 6.6 Inspection and Maintenance.
6.7 Housekeeping.
Chapter 7 Deflagration Prevention by Oxidant Concentration Reduction
7.1 Application.
7.2 Design and Operating Requirements.
16 7.3 Purge Gas Sources.
7.4 Purge Gas Conditioning.
7.5 Piping Systems.
7.6 Application of Purge Gas at Points of Use.
17 7.7 Instrumentation.
Chapter 8 Deflagration Prevention by Combustible Concentration Reduction
8.1 Application.
8.2 Basic Design Considerations.
18 8.3 Design and Operating Requirements.
8.4 Instrumentation.
Chapter 9 Predeflagration Detection and Control of Ignition Sources
9.1 Application.
19 9.2 Limitations.
9.3 Optical Sensing System and Gas Sensing System Design Considerations.
9.4 Testing.
9.5 Protection System Design and Operation.
20 9.6 System Manufacturer’s Additional Responsibilities.
9.7 Actuation of Other Devices and Systems.
9.8 Process Shutdown.
Chapter 10 Deflagration Control by Suppression
10.1 Application.
21 10.2 Limitations.
10.3 Personnel Safety.
10.4 Basic Design Considerations.
22 10.5 Control Panels.
10.6 Detection Devices.
23 10.7 Electrically Operated Actuating Devices.
10.8 Suppressant and Suppressant Storage Containers.
Chapter 11 Deflagration Control by Active Isolation
11.1 Application.
11.2 Isolation Techniques.
25 11.3 Personnel Safety.
11.4 Basic Design and Operation.
27 11.5 Detection Devices.
11.6 Electrically Operated Actuating Devices.
11.7 Control Panels.
Chapter 12 Deflagration Control by Passive Isolation
12.1 Application.
12.2 Passive Isolation Techniques.
33 Chapter 13 Deflagration Control by Pressure Containment
13.1 Application.
34 13.2 Design Limitations.
13.3 Design Bases.
35 13.4 Maintenance.
13.5 Threaded Fasteners.
13.6 Inspection After a Deflagration.
Chapter 14 Passive Explosion Suppression Using Expanded Metal Mesh or Polymer Foams
14.1 Applications.
14.2 Foam and Mesh Requirements.
36 14.3 Expanded Metal Mesh and Polymer Foam Explosion Suppression Testing.
37 14.4 Expanded Metal Mesh or Polymer Foam Installations.
14.5 Expanded Metal Mesh or Polymer Foam Maintenance and Replacement.
Chapter 15 Installation, Inspection, and Maintenance of Explosion Prevention Systems
15.1 General.
15.2 Installation.
38 15.3 Mechanical Installation.
15.4 Agent, Agent Storage Containers, Automatic Fast-Acting Valves, Flame Arresters, and Flame Front Diverters.
15.5 Electrical Installation.
39 15.6 System Acceptance.
15.7 Inspection.
40 15.8 Procedures Following System Actuation.
15.9 Recordkeeping.
15.10 Personnel Safety and Training
41 15.11 Management of Change.
15.12 Maintenance.
Annex A Explanatory Material
64 Annex B Control of Flammable Gas Mixtures by Oxidant Concentration Reduction and Combustible Concentration Reduction
71 Annex C Limiting Oxidant Concentrations
75 Annex D Ventilation Calculations
77 Annex E Purging Methods
79 Annex F Flame Arresters
84 Annex G Deflagration Containment Calculation Method for Two Interconnected Vessels
86 Annex H Informational References

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NFPA 69 2019
$80.71