Hazardous Materials. Subpart H. Subpart H – Hazardous Materials. 101 – Compressed gases (general requirements) 102 – Acetylene 103 – Hydrogen 104 – Oxygen 105 – Nitrous oxide 106 – Flammable and combustible liquids. Subpart H – Hazardous Materials.
(FP > 100oF)
Flash Point (oF)
(FP < 100oF)
Boiling Point (oF)
Common Name Flash Point (oF)
Ethyl Ether -49
Methyl Ethyl Ketone 21
A good plan for safe use of flammable and combustible liquids contains at least these components:
Must take adequate precautions to prevent ignition of flammable vapors. Some sources of ignition include:
Always provide adequate ventilation to reduce the potential for ignition of flammable vapors.
Inside storage room
Since there is a sizeable risk whenever flammable liquids are handled, OSHA allows only four methods for transferring these materials:
Combustible waste and residue must be kept to a minimum, stored in covered metal receptacles and disposed of daily.
Waste drum with disposal funnel
Oily-waste can (self-closing lid)
Safety disposal can
How would you classify a storage area where LP gas is contained in closed tanks?
Spray area – Cleaning
Compressed gases - Handling, storage and use
Spray booth - Air velocity
Class I liquids - Dispensing
Spray area - Approved electrical wiring