🔥🔥 Don’t Miss Out on Our End of Autumn Sale. If you have any questions, feel free to click the bottom right corner to contact our customer service..

Concat us[email protected]
Shopping Cart

No products in the cart.

🔍
NFPA 68 2023

NFPA 68 2023

$80.71

NFPA 68: Standard on Explosion Protection by Deflagration Venting

Published By Publication Date Number of Pages
NFPA 2023 105
PDF Format Searchable Printable Preview Now
Guaranteed Safe Checkout
Category:

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

Help make industrial occupancies safer with the most current requirements for fire and explosion protection by deflagration venting. NFPA® 68, Standard on Explosion Protection by Deflagration Venting, 2023 edition, reflects updated technology, evolving fire safety practices, and the knowledge and experience of experts in the field. The revised standard offers the latest information on the design, location, installation, maintenance, and use of devices and systems that vent the combustion gases and pressures resulting from a deflagration within an enclosure to minimize structural and mechanical damage. Notable changes include: Requirements combined for fireball and hazard distance requirements for gases and dust and moved into Chapter 6 for consistency in application Revised partial volume calculations for both gases and dust to account for solid objects reducing the open-air volume available for mixing and for possible dust concentrations below the worst-case concentrations Updated fundamental burning velocity values in the annex based on currently available data Added an annex on vent sizing for hydrogen mixture

PDF Catalog

PDF Pages PDF Title
10 Chapter 1 Administration
1.1 Scope.
1.2 Purpose.
1.3 Application.
1.4 Retroactivity.
1.5 Equivalency.
1.6 Conversion Factors.
11 1.7 Symbols.
1.8 Pressure.
Chapter 2 Referenced Publications
2.1 General.
2.2 NFPA Publications.
12 2.3 Other Publications.
2.4 References for Extracts in Mandatory Sections.
Chapter 3 Definitions
3.1 General.
3.2 NFPA Official Definitions.
3.3 General Definitions.
14 Chapter 4 General Requirements
4.1 Goal.
4.2 Objectives.
4.3 Compliance Options.
Chapter 5 Performance-Based Design Option
5.1 General Requirements.
5.2 Performance Criteria.
15 Chapter 6 Fundamentals of Venting of Deflagrations
6.1 Basic Concepts.
6.2 Mixtures.
6.3 Enclosure Design and Support.
17 6.4 Enclosure Length-to-Diameter Ratio and Vent Variables.
6.5 Vent Closure Operation.
18 6.6 Consequences of a Deflagration.
6.7 Effects of Vent Inertia.
19 6.8 Fireball Dimensions.
20 6.9 Effects of Vent Discharge Ducts.
6.10 Venting with Flame Arresting and Particulate Retention.
21 Chapter 7 Venting Deflagrations of Gas Mixtures and Mists
7.1 Introduction.
7.2 Venting by Means of Low Inertia Vent Closures.
23 7.3 Partial Volume Effects.
7.4 Effects of Panel Inertia.
24 7.5 Effects of Vent Ducts.
7.6 Deflagration Venting of Enclosures Interconnected with Pipelines.
Chapter 8 Venting of Deflagrations of Dusts and Hybrid Mixtures
8.1 Introduction.
25 8.2 Venting by Means of Low-Inertia Vent Closures.
26 8.3 Effects of Panel Inertia.
27 8.4 Effects of Partial Volume.
29 8.5 Effects of Vent Ducts.
8.6 Bins, Hoppers, and Silos.
30 8.7 Venting of Dust Collectors Using Bags, Filters, or Cartridges.
8.8 Bucket Elevators.
31 8.9 Venting Internal to a Building with Flame-Arresting and Particulate Retention Device.
8.10 Venting Silos or Other Storage Vessel Provided with Integral Bin Vents.
32 8.11 Deflagration Venting of Enclosures Interconnected with Pipelines.
Chapter 9 Venting of Deflagrations of Gases and Dusts in Pipes and Ducts Operating at or Near Atmospheric Pressure
9.1 Introduction.
9.2 Design.
33 9.3 Multiple Deflagration Vents on a Pipe or Duct.
Chapter 10 Details of Deflagration Vents and Vent Closures
10.1 Normally Open Vents.
34 10.2 Normally Closed Vents.
10.3 Types of Building or Room Vent Closures.
10.4 Restraints for Large Panels.
10.5 Equipment Vent Closures.
35 Chapter 11 Inspection and Maintenance
11.1 General.
11.2 Design Parameters and Documentation.
11.3 Installation.
11.4 Inspection.
36 11.5 Procedures Following Vent Closure Actuation.
11.6 Vent Closure Design Parameters.
11.7 Inspection Reports.
11.8 Recordkeeping.
11.9 Management of Change.
11.10 Maintenance.
11.11 Employee Training.
37 Annex A Explanatory Material
66 Annex B Fundamentals of Deflagration
71 Annex C Guidelines for Measuring Deflagration Parameters of Dusts
74 Annex D Deflagration Characteristics of Select Flammable Gases
79 Annex E Estimating Fundamental Burning Velocity
80 Annex F Deflagration Characteristics of Select Combustible Dusts
82 Annex G Calculation Method for Correction Factor Due to Increased Vent Panel Mass
85 Annex H Research Reports and Supporting Documents
86 Annex I Full and Partial Volume Gas Venting of a Building — Example Problem
93 Annex J Effect of Dust Partial Volumes on Venting of Buildings — Example Problem
94 Annex K Example Vent Sizing for Hydrogen Mixtures
95 Annex L Bibliography

Related products

NFPA 68 2023
$80.71