Flammable & combustible safety course.

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Flammable & CombustibleFlammable & Combustible
Safety Training
Training

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Storage and Safe HandlingStorage and Safe Handling
 No open flames, smoking, sparks
or welding is allowed in
flammable liquid storage areas.
 Store in a cool location. Not
outside in direct sunlight. The
warmer the flammable liquid is
the more vapors it generates!
 Storage shall be in an open or
well ventilated area.
 “No Smoking” posted

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Flammable and CombustibleFlammable and Combustible
LiquidsLiquids
Flashpoint: The minimum temperature at which a liquid gives
off enough vapor within a test vessel in sufficient concentration
to form an ignitable mixture with air near the surface of the
liquid.
Remember, it is the vapors, not the liquid, that Burns!
The determining factor in whether a liquid is
flammable or combustible is its flashpoint.

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Flammable andFlammable and
Combustible LiquidsCombustible Liquids
 Flammable Liquids
 Any liquid having a
flashpoint below
100o
F (37.8o
C)
 NFPA Classes IA,
IB, & IC
 Combustible Liquids
 Any liquid having a
flashpoint at or above
100o
F (37.8o
C).
 FPA Classes II & IIIA
& B
NFPA: National Fire Prevention Association

5. Classes of FlammableClasses of Flammable
and Combustible Liquidsand Combustible Liquids
200
140
100
73
IIIA
II
IC
IA IB
100
COMBUSTIBLE
(Flash Point >100 F)
FLAMMABLE
(Flash Point < 100 F)
Boiling Point (F)
Flashpoint(Fo)

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Exposure Control Measures Include:
 Eliminating flames, static electricity, & sparks
from electrical circuits.
 Temperature.
 Proper Ventilation.
 Grounding/Bonding.
 Spill Control/Emergency Response.
 Proper disposal of spent flammable
liquids and soaked rags.
Hazards of Flammable LiquidsHazards of Flammable Liquids

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Explosive limits involve the concentration level of
the given chemical in the air.
A vapor/air mixture below the flammable limit is
too lean to burn or explode. A mixture above the
upper flammable limits is too rich to burn. (UEL)
Most flammable liquids are volatile, meaning they
evaporate quickly, and can reach a concentration
in air that could lead to an explosion.(LEL)
Explosive LimitsExplosive Limits

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Controlling the potentialControlling the potential
for fire and explosion withfor fire and explosion with
flammable liquids is doneflammable liquids is done
through safethrough safe Storage,Storage,
Transfer, UseTransfer, Use
and Disposal!and Disposal!

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Use and Disposal ofUse and Disposal of
Flammable LiquidsFlammable Liquids
Open flames, smoking, welding/brazing
is prohibited in areas where flammable
liquids are store, transferred, used or
disposed of.
Keep containers and drums sealed
when not in use.
Clean up spills!

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DefinitionsDefinitions
Grounding: Applying a grounding wire to a container to
eliminate a difference in static charge changes the potential
between an object and ground.
Bonding: Use of a wire between two drums to eliminate the
static charge potential between objects.
Ventilation: Adequate if it is sufficient to prevent the
accumulation of significant quantities of vapor-air mixtures in
concentrations over ¼ of the Lower Explosive Limit.

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Safety Can:Safety Can: An approved redAn approved red
container, of not more than 5 gallonscontainer, of not more than 5 gallons
capacity, having a spring-closing lidcapacity, having a spring-closing lid
and spout cover and so designedand spout cover and so designed
that it will safely relieve internalthat it will safely relieve internal
pressure when subjected to firepressure when subjected to fire
exposure.exposure.
Oily Waste Can:Oily Waste Can: A self closing metalA self closing metal
container used to store oil soakedcontainer used to store oil soaked
rags.rags.

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Transferring ofTransferring of
Flammable LiquidsFlammable Liquids
 Liquids shall be kept in covered/closedLiquids shall be kept in covered/closed
containers when actually not in use.containers when actually not in use.
 Open flame and smoking is strictly prohibited inOpen flame and smoking is strictly prohibited in
transferring areas.transferring areas. (Signs Posted)(Signs Posted)
 Liquid transfer shall be through a deviseLiquid transfer shall be through a devise
drawing through the top of the drum or bydrawing through the top of the drum or by
gravity through an approved self-closing valve.gravity through an approved self-closing valve.
 Transfer by air pressure is prohibited.Transfer by air pressure is prohibited.

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Transferring ofTransferring of
Flammable Liquids cont.Flammable Liquids cont.
 Containers from which flammable liquids areContainers from which flammable liquids are
dispensed are to be grounded and bonded to avoiddispensed are to be grounded and bonded to avoid
fire due to static electricity.fire due to static electricity.
 Flammable liquids are only to be dispensed intoFlammable liquids are only to be dispensed into
approved safety cans.approved safety cans.

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Incidental StorageIncidental Storage
(Small quantities)(Small quantities)
Liquids located outside of storage
cabinets/areas shall not exceed:
 25 Gallons of Class IA in
containers.
 120 Gallons of Class IB, IC or
Class II liquids in containers.

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Storage Inside BuildingStorage Inside Building
 Flammable or combustible liquid drums shall not be
stored so as to limit use of exits, stairways, or areas
normally used for the safe egress of people.
 The storage of flammable or combustible liquids in
containers or portable tanks is prohibited in office
occupancy areas, except that which is required for
maintenance and operation of building and
operation of equipment.
 Leaking containers shall be removed to a storage
room or taken to a safe location outside and the
contents transferred to an undamaged container.

16. Container & Portable TankContainer & Portable Tank
StorageStorage
Design, Construction and Capacity of
Containers
Only approved containers and portable tanks may be used
to store flammable and combustible liquids.
Not more than 60 gallons of Class I and/or Class II liquids,
or not more than 120 gallons of Class III liquids may be
stored in an individual cabinet.

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Safe Storage PracticesSafe Storage Practices
Do not store near oxidizers.
Drums of flammable liquid should beshould be
grounded.
A 10 lbs. fire extinguisher should be
readily accessible within the storage area.