Flammable and Flammable and Combustible Combustible LiquidsLiquids

Flammable liquidsFlammable liquids

Class I - liquids have flashpoints Class I - liquids have flashpoints below 100 degrees F, with vapor below 100 degrees F, with vapor pressures not exceeding 40 psiapressures not exceeding 40 psia

Class IA - liquids having flashpoints Class IA - liquids having flashpoints below 73 degrees F and boiling below 73 degrees F and boiling points below 100 degrees Fpoints below 100 degrees F

1a

Flammable liquidsFlammable liquids

Class IB - liquids having flashpoints Class IB - liquids having flashpoints below 73 degrees F and boiling below 73 degrees F and boiling points at or above 100 degrees Fpoints at or above 100 degrees F

Class IC - liquids having flashpoints at Class IC - liquids having flashpoints at or above 73 degrees F and below or above 73 degrees F and below 100 degrees F100 degrees F

1b

Flammable liquidsFlammable liquids

Flammable liquids Flammable liquids give off ignitable give off ignitable vaporsvapors

1c

Combustible liquidsCombustible liquids

Class II liquids have flashpoints at Class II liquids have flashpoints at or above 100 degrees F and below or above 100 degrees F and below 140 degrees F140 degrees F

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Combustible liquidsCombustible liquids

Class III liquids have flashpoints at Class III liquids have flashpoints at or above 140 degrees For above 140 degrees F• Class IIIA liquids have flashpoints at Class IIIA liquids have flashpoints at

or above 140 degrees F and below or above 140 degrees F and below 200 degrees F200 degrees F

• Class IIIB liquids have flashpoints at Class IIIB liquids have flashpoints at or above 200 degrees For above 200 degrees F

1e

Handling and storage Handling and storage proceduresprocedures

Two forms of storage:Two forms of storage:• Reserve storage in drumsReserve storage in drums• Operational storage in small Operational storage in small

quantities at work stationsquantities at work stations

Connect drums to a grounding Connect drums to a grounding systemsystem

2a

Handling and storage Handling and storage proceduresprocedures

Liquids can be dispensed by two Liquids can be dispensed by two methods:methods:• Gravity flowGravity flow• Pump methodsPump methods

2b

Handling and storage Handling and storage proceduresprocedures

Areas where flammable liquids are Areas where flammable liquids are transferred from one container to transferred from one container to another must:another must:• be protected from ignition sourcesbe protected from ignition sources• have drainage or other methods to have drainage or other methods to

control spillscontrol spills• have natural or mechanical have natural or mechanical

ventilationventilation

2c

Handling and storage Handling and storage proceduresprocedures

Store flammable liquids in Store flammable liquids in approved safety cansapproved safety cans

2d

Handling and storage Handling and storage proceduresprocedures

Flammable liquids used at workstations Flammable liquids used at workstations must not exceed the sum of:must not exceed the sum of:• 25 gallons of Class IA liquids in containers25 gallons of Class IA liquids in containers• 120 gallons of Classes IB, IC, II, or III liquids 120 gallons of Classes IB, IC, II, or III liquids

in containersin containers• 660 gallons of Class IB, IC, Class II, or Class 660 gallons of Class IB, IC, Class II, or Class

IIIA liquids in a single portable tankIIIA liquids in a single portable tank

2e

Handling and storage Handling and storage proceduresprocedures

Use specially designed waste cans Use specially designed waste cans for the disposal of wastefor the disposal of waste

Remember that it is the vapors, Remember that it is the vapors, not the liquid that burnsnot the liquid that burns

Use specially developed absorbent Use specially developed absorbent materials for spill cleanupmaterials for spill cleanup

2f

Flood emergenciesFlood emergencies

If flammable liquids are stored in If flammable liquids are stored in tanks, review and understand the tanks, review and understand the location and contents of flood location and contents of flood emergency instructionsemergency instructions

Emergency action plansEmergency action plans

3a

Flood emergencies and Flood emergencies and storage tanksstorage tanks

Categories of storage tanksCategories of storage tanks• Above groundAbove ground• UndergroundUnderground• Tanks inside of buildingsTanks inside of buildings

3b

Flood emergencies and Flood emergencies and storage tanksstorage tanks

Types of storage tanksTypes of storage tanks• AtmosphericAtmospheric• Low-pressureLow-pressure• Pressure vesselsPressure vessels

3c

Flood emergencies and Flood emergencies and storage tanksstorage tanks

Keep debris and vegetation away Keep debris and vegetation away from the tank areafrom the tank area

Situate tanks in areas where high-Situate tanks in areas where high-level water will not occurlevel water will not occur

Anchor horizontal tanks if more than Anchor horizontal tanks if more than 70 percent of the tank’s capacity will 70 percent of the tank’s capacity will be submergedbe submerged

3d