ASHRAE Guide HVAC Hazardous 2021

$21.13

ASHRAE Guide for HVAC in Hazardous Spaces

Published By	Publication Date	Number of Pages
ASHRAE	2021	82

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Category: ASHRAE

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Description

Ensuring Safety and Health in Hazardous Spaces This guide is the first and only overview of its kind in the United States. It covers the proper design, engineering, installation, operation, and maintenance of safe and effective heating, ventilation, pressurization, dilution, filtration, and air-conditioning systems for hazardous spaces. The book places particular emphasis on toxic chemicals, asphyxiants, flammable gases, and combustible dusts; it does not touch on radioactive or pathogenic substances. This guide presents various techniques and methods developed and refined over time by countless experts within specific fields of interest. Readers will gain insight into the best possible means to ensure that a space is effectively ventilated and conditioned for various levels of occupancy while preserving all aspects of the safety and health of the occupants as well as the protection of surrounding facilities. It also serves as a reference to critical standards, recommended practices, and related publications.

PDF Catalog

PDF Pages	PDF Title
6	Dedication
8	About the Author
10	Contents
12	Preface
14	Acknowledgments
16	1 – Introduction Definitions
20	Additional Sources of Information
24	2 – Applicable Hazardous Substances Toxic Substances
25	Asphyxiating Substances
27	Flammable and Combustible Substances
29	Corrosive Substances Conclusion
30	3 – Sources of Hazards in Relationship to Protected Spaces External Sources
31	Internal Sources Contained Sources
32	Uncontained Sources Fugitive Emission Sources Horizontal Surface Sources Limited and Unlimited Releases
33	Flow Modeling of Sources
34	Combined Sources Synopsis
36	4 – Protection Methods Ventilation
37	Positive Ventilation Negative Ventilation
38	Potential Adverse Effects Ventilation Inlet and Outlet Locations Air Changes per Hour or Flow Rate
39	Monitoring, Alarm, and Performance
40	Natural Ventilation
41	Emergency Ventilation Pressurization
42	Principles of Operation
43	Monitoring, Alarm, and Performance Requirements
45	Dilution
46	Principles of Operation
47	Monitoring, Alarm, and Performance Requirements Filtration
48	Particulate Collection Air Filters Deep-Bed or Gas-Phase Chemical Scrubbers
49	Electrostatic Precipitation Air Filters Cyclonic Air Filters Containment, Isolation, and Removal of Airborne Dusts and Particles
52	5 – Protected Space Integrity General Construction Assessment
53	Electrical Conduit Entry Assessment Piping, Ducting, and Plumbing System Drain and Vent Assessments Interior Construction Assessment
54	Vapor Barriers Isolated Area Assessment Design Considerations for Dust Hazards Design Considerations for Blast-Rated Spaces
55	Design Considerations for Blast-Vented Spaces
56	Synopsis
58	6 – Equipment Selection Criteria
59	Housings and Component Materials Noncorrosive Conditions Corrosive Conditions
60	Fan Blade and Blower Wheel Materials Protection System Equipment Electrical Ratings Surrounding Atmosphere Classification
61	Protected Space Classification Equipment Rating Establishment
62	Air-Conditioning System Equipment Electrical Ratings
64	Electric Heating Equipment Electrical Ratings
65	Equipment Sizing, Redundancy, and Safety Factors
68	7 – Associated Equipment Design and Installation Requirements Intake Duct and Stack Pipe Design and Installation
69	Contaminant-Free Air Inlet and Exhaust Vent Design and Installation
70	Room Pressure and Airflow Sensor and Switch Design and Installation
71	Gas Detection System Design and Installation
72	Alarm System Design and Installation Emergency Shutdown and Ventilation Switch Design and Installation
74	8 – System Maintenance Establishment of Preventive Maintenance Procedures
76	9 – System Operation
78	References