Hazardous Materials

1
Hazardous Materials

• Subpart H

2
Subpart H Standards

• 1910.101 Compressed Gases
• 1910.102 Acetylene
• 1910.103 Hydrogen
• 1910.104 Oxygen
• 1910.105 Nitrous Oxide
• 1910.106 Flammable and Combustible Liquids

3
Subpart H Standards

• 1910.107 Spray Finishing using Flammable and
  Combustible Materials
• 1910.108 Dip Tanks containing Flammable and
  Combustible Liquids
• 1910.109 Explosives and Blasting Agents

4
Subpart H Standards

• 1910.110 Storage and Handling of Liquefied
  Petroleum Gases
• 1910.111 Storage and Handling of Anhydrous
  Ammonia
• 1910.119 Process Safety Management of Highly
  Hazardous Chemicals
• 1910.120 Hazardous Waste Operations and
  Emergency Response

5
Subpart H Standards

• 1910.123 Dipping and coating operations
  Coverage and Definitions
• 1910.124 General Requirements for Dipping
  and Coating Operations

6
Subpart H Standards

• 1910.125 Additional Requirements for Dipping
  and Coating Operations that use Flammable
  or Combustible Liquids
• 1910.126 Additional Requirements for Special
  Dipping and Coating Operations

7
Definitions

• Hazardous Chemical
• Occupational Safety Health Act (OSHA) term that
  denotes any chemical that would be a risk to
  employees if exposed in the work place

8
Definition

• Highly Hazardous Chemical
• OSHA term that denotes any chemical that would
  posses toxic, reactive, flammable or explosive
  properties

9
Definitions

• Aerosol
• Aerosol shall mean a material which is dispensed
  from its container as a mist, spray, or foam by a
  propellant under pressure

10
Definitions

• Container
• Container shall mean any can, barrel, or drum

11
Definitions

• Closed Container
• Closed container shall mean a container so sealed
  by means of a lid or other device that neither
  liquid or vapor will escape from it at ordinary
  temperatures

12
Definitions

• Fire Area
• Fire area shall mean an area of a building
  separated from the remainder of the building by
  construction having a fire resistance of at least
  1 hour and having all communicating openings
  properly protected by an assembly having a fire
  resistance rating of at least one hour.

13
Definitions

• Flash Point
• Flash point means the minimum temperature at
  which a liquid gives off vapor within a test
  vessel in sufficient concentration to form an
  ignitable mixture with air near the surface of
  the liquid. The flash point is normally an
  indication of susceptibility to ignition.

14
Definitions

• Combustible Liquid
• Combustible liquid means any liquid having a
  flash point at above 100F (37.8 C).
• Combustible liquids are divided into two classes
• Class II
• Class III

15
Definitions

• Flammable Liquid
• Flammable liquid means any liquid having a flash
  point below 100 F (37.8 C) or higher, the total
  of which make up 99 percent or more of the total
  volume of the mixture.

16
Definitions

• Portable Tank
• Portable tank shall mean a closed container
  having a liquid capacity over 60 U.S. gallons and
  not intended for fixed installation

17
Definitions

• Safety Can
• Safety can means an approved container, of not
  more than 5 gallons capacity, having a
  spring-closing lid and spout cover and so
  designed that it will safely relieve internal
  pressure when subject to fire exposure

18
Flammable (Explosive) Limits

• Flammable Range
• The range of a combustible vapor or gas-air
  mixture between the upper and lower flammable
  limits.
• Also, known as the explosive range.

19
Flammable (Explosive) Limits

• Lower Flammable Limit
• The lowest concentration at which a combustible
  gas forms a flammable mixture.
• Below the LFL there is too little combustible
  fuel to sustain a flame.
• Also, known as Lower Explosive Limit or LEL.

20
Flammable (Explosive) Limits

• Upper Flammable Limit
• The highest concentration at which a combustible
  gas forms a flammable mixture.
• Above the UFL there is too little oxygen to
  sustain a flame. Better known as too rich to
  burn.
• Also, known as Upper Explosive Limit or
  UEL.

21
Flammable (Explosive) Limits

• Hazardous Material LFL UFL
• Butane 1.9 8.5
• Ethylene Oxide 3.0 100.0
• Gasoline 1.4 7.6
• Hydrogen 4.0 75.0
• Isopropyl Alcohol 2.0 12.7
• Propane 2.1 9.5

22
Container and Portable Tank Storage

• This section applies only to the storage of
  flammable and combustible liquids in drums or
  other containers not exceeding 60 gallons
  individual capacity and portable tanks of less
  than 660 gallons individual capacity.

23
Fire Control

• At least one portable fire extinguisher having a
  rating of not less than 12-B units shall be
  located outside of, but not more than 10 feet
  from, the door opening into any room used for
  storage.