NFPA 45: Standard on Fire Protection for Laboratories Using Chemicals

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2011 NFPA 45

Prior Years Prior Editions of NFPA 45

Major changes in the 2011 NFPA 45 help you reduce fire and explosion risks in laboratories using chemicals.

Essential to the fire safe design and operation of instructional, educational, and industrial laboratories using chemicals, NFPA 45: Standard on Fire Protection for Laboratories Using Chemicals outlines the maximum allowable quantities of liquids and gases, as well as requirements for laboratory ventilating systems and chemical fume hoods.

Revisions impact the design, construction, and operation requirements for laboratories in buildings over one story in height.

Height restrictions were added for Class A and B laboratory units, and the fire resistance rating of laboratory units. Height restrictions and quantities of hazardous materials were modified for laboratory units depending upon the height of the building containing the laboratories.

Other key changes in the 2011 edition:

  • Added requirements for laboratories in health care facilities, previously covered in NFPA 99.
  • Quantified limits for hazardous materials that could present an explosion hazard -- for storage or use in a laboratory work area
  • Clarified requirements for the management of time-sensitive chemicals

Keep laboratory personnel, equipment, and buildings safe with the 2011 NFPA 45. (Softbound, 49 pp., 2011)

NFPA® 45 Standard on Fire Protection for Laboratories Using Chemicals 2011 Edition

Chapter 1 Administration
1.1 Scope
1.2 Purpose
1.3 Application
1.4 Retroactivity
1.5 Equivalency
Chapter 2 Referenced Publications
2.1 General
2.2 NFPA Publications
2.3 Other Publications
2.4 References for Extracts in Mandatory Sections
Chapter 3 Definitions
3.1 Definitions
3.2 NFPA Official Definitions
3.3 General Definitions
Chapter 4 Laboratory Unit Hazard Classification
4.1 General
4.2 Laboratory Unit Fire Hazard Classification
4.3 Laboratory Work Area and Laboratory Unit Explosion Hazard Classification
Chapter 5 Laboratory Unit Design and Construction
5.1 Laboratory Unit Enclosure
5.2 Maximum Area of Laboratory Units
5.3 Requirements for Life Safety
5.4 Means of Access to an Exit
5.5 Furniture, Casework, and Equipment
5.6 Electrical Installation
Chapter 6 Fire Protection
6.1 General
6.2 Automatic Fire Extinguishing Systems
6.3 Standpipe and Hose Systems
6.4 Portable Fire Extinguishers
6.5 Fire Alarm Systems
6.6 Fire Prevention
Chapter 7 Explosion Hazard Protection
7.1 General
7.2 Explosion-Resistant Construction
7.3 Explosion Venting
7.4 Unauthorized Access
7.5 Inspection and Maintenance
Chapter 8 Laboratory Ventilating Systems and Hood Requirements
8.1 General
8.2 Basic Requirements
8.3 Supply Systems
8.4 Exhaust Air Discharge
8.5 Duct Construction for Hoods and Local Exhaust Systems
8.6 Duct Velocities
8.7 Exhausters (Fans), Controls, Velocities, and Discharge
8.8 Chemical Fume Hood Construction
8.9 Chemical Fume Hood Location
8.10 Chemical Fume Hood Fire Protection
8.11 Perchloric Acid Hoods
8.12 Identification of Chemical Fume Hood Systems
8.13 Inspection, Testing, and Maintenance
Chapter 9 Chemical Storage, Handling, and Waste Disposal
9.1 Ordering Procedures
9.2 Handling and Storage
9.3 Waste Handling and Disposal
Chapter 10 Flammable and Combustible Liquids
10.1 Quantity Limitations
10.2 Supply Piping
10.3 Liquid Dispensing
10.4 Pressurized Liquid Dispensing Containers (PLDC)
10.5 Equipment
Chapter 11 Compressed and Liquefied Gases
11.1 Compressed and Liquefied Gases in Cylinders
11.2 Storage and Piping Systems
11.3 Outdoor Installation of Compressed Gas Cylinders for Servicing Laboratory Work Areas (Located Outside of Laboratory Work Areas)
11.4 Cryogenic Fluids
Chapter 12 Laboratory Operations and Apparatus
12.1 Operations
12.2 Apparatus
Chapter 13 Hazard Identification
13.1 Identification of Entrances
13.2 Exhaust Systems
13.3 Labeling of Containers
13.4 Identification Systems
Annex A Explanatory Material
Annex B Supplementary Definitions
Annex C Supplementary Information on Explosion Hazards and Protection
Annex D Supplementary Information on the Concept of the Laboratory Unit
Annex E Flammability Characteristics of Common Compressed and Liquefied Gases
Annex F Safety Tips for Compressed Gas Users
Annex G Informational References