Оглавление
Robert C. Comer. Explosion Vented Equipment System Protection Guide
Table of Contents
List of Tables
List of Illustrations
Guide
Pages
Explosion Vented Equipment System Protection Guide
Preface
Introduction
Part 1: Structural Analysis
Part 2: Venting Analysis
How to Use This Book
Symbols
Greek Symbols
Typical Dust Collection System Checklist
Dust collector: If square or rectangular
Dust collector: If cylindrical
Explosion vent information:
Duct information:
Screw conveyor:
Acknowledgments
Part 1 Structural Analysis and Design for Reinforcing Dust Handling Systems. Part 1: Introduction
1 Design Criteria and General Theory
2 Square/Rectangular Dust Collector Wall, Roof, and Hopper Sections
Rectangular Panel Stresses
Example 2.1 Air Inlet Housing Top Panel (Narrow Panels, One Side of the Unsupported Panel is Less than 20″)
Reinforcing Members Analysis for Example 2.1
Example 2.2 Large Panels
Dust Collector Side and Rear Panels
Hopper Panels: Reinforcing Horizontal and Vertical Members
Hopper Panels: Using Horizontal Members Only
Ribbed Dust Collectors
3 Round/Cylindrical Dust Collectors
Ports: (Nozzles)
Vessel Head Not Flat
4 Reinforcing Member to Panel Weld Analyses and Port (Nozzle) Weld Analyses
Example 4.1
Example 4.2
Corner Miter Joint Reinforcing Weld Analysis
Port (Nozzle) Reinforcing Weld Analyses
Strength of connected elements
Possible paths of failure
Strength of connected elements
Possible paths of failure
5 Access Doors, Hinges, and Latches. Access Door
Reinforcing Member to Access Door Weld Analysis
Hinges and Latches
Bolted Configuration
Welds
Toggle Clamp Configuration
6 Explosion Vent Ducts, Mill Inlet Air Ducts, Blast Deflectors, and Filter Bag Cage Design
Vent Duct Flange Bolt Loading and Stress. Flange Gasket Sealing Design Requirements
Hammermill Air Inlet Duct
Bird Screens
7 Explosion Vent Duct Weather Covers
8 Dust Collector Stability
Wind Force (Fw)
Floor or Ground Anchor
9 System Explosion Isolation
Pressure Profile
10 Screw Conveyors, Rotary Airlock Valves, and Isolation Valves
Rotary Airlock Valves
Isolation Valves
General
11 Grounding of Systems
12 Housekeeping and General Information
General Information
Appendix A Part 1: Worksheet. Structural Tubing – Panel Worksheet (Example) Composite Section of Tube with Panel
Structural Tubing – Panel Worksheet. Composite Section of Tube with Panel
Structural Angle – Panel Worksheet (Example) Composite Section of Angle with Panel
Structural Angle – Panel Worksheet. Composite Section of Angle with Panel
Structural Channel – Panel Worksheet. Composite Section of Channel with Panel
Reinforcing Rib – Panel Worksheet. Composite Section of Rib with Panel
Detail 1: Panel to Panel Corner Joint Worksheet
Detail 2: Panel to Panel Corner Joint Reinforced Worksheet
Detail 3: Reinforcing Member Miter Joint Weld Worksheet
For the angle:
For the tube:
Detail 4: Square/Rectangular Bolted Flange Worksheet
Detail 5: Round Duct Bolted Flange Worksheet
Part 2 Explosion Relief Element and Explosion Flowing Pressure Analyses. Part 2: Introduction
13. Know Your Process Dust Characteristics
14 Venting Analysis of Dust Handling Systems
Square/Rectangular Dust Collector
Example with Figure 14.1: Existing Vessel with Explosion Vent Close to Hopper
Symbols: Refer to NFPA 68 (2013)
Example with Figure 14.2: Vessel with Explosion Vent High on Vessel
Cylindrical Dust Collector
Example with Figure 14.4: Cylindrical Vessel with Explosion Vent on the Side
Symbols: Refer to NFPA 68 (2013)
Example with Figure 14.5: Cylindrical Vessel with Explosion Vent on the Top
Symbols: Refer to NFPA 68 (2013)
15 Duct Back Pressure Considerations
Duct Back Pressure Correction
Summary of the Examples. Square/Rectangular Dust Collectors
Corrections
Duct back pressure correction
Cylindrical Dust Collectors
16 Other Methods of Explosion Pressure Reduction
Chemical Suppression System
Ten bar Rated Mills
Flameless Venting System
Appendix B Part 2: Worksheet. Dust Collection System Checklist
Dust collector: If square or rectangular
Dust collector: If cylindrical
Explosion vent information
Duct information
Screw conveyor
References
Index. a
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