Flammable
Liquids
Standard operating procedures
(SOP) are intended to provide you with general guidance on how to safely
work with a specific class of chemical or hazard. This SOP is generic in
nature. It addresses the use and handling of substances by hazard class
only. In some instances multiple SOPs may be applicable for a specific
chemical (i.e., both the SOPs for flammable liquids and carcinogens would
apply to benzene). If you have questions concerning the applicability of
any items listed in this procedure contact the Office of Environmental
Health and Safety (292-1284) or the Principal Investigator of your laboratory.
Specific written procedures are the responsibility of the principal investigator.
Flammable liquids are chemicals
that have a flash point below 100oF (38.7o C) and
a vapor pressure that does not exceed 40 psig at 100oF.
Securing of gas cylinders
Not applicable
Decontamination procedures
Personnel: Wash hands and arms with soap
and water immediately following any skin contact with flammable liquids.
Designated area
Not applicable
Emergency procedure
Emergency procedures which address response
actions to fires, explosions, spills, injury to staff, or the development
of sign and symptom of overexposure must be developed The procedures should
address as a minimum the following:
-
Who to contact: (University police, and Office
of Environmental Health and Safety, Principal investigator of the laboratory
including evening phone number)
-
The location of all safety equipment (showers,
spill clean up supplies, eye wash, fire extinguishers, etc.)
-
The method used to alert personnel in nearby
areas of potential hazards
-
Special first aid treatment required by the
type of corrosive material(s) handled in the laboratory
Eye protection
Eye protection in the form of safety glasses
must be worn at all times when handling flammable liquids. Ordinary (street)
prescription glasses do not provide adequate protection. (Contrary to popular
opinion these glasses cannot pass the rigorous test for industrial safety
glasses.) Adequate safety glasses must meet the requirements of the Practice
for Occupational and Educational Eyeand FaceProtection
(ANSI Z.87. 1 1989) and must be equipped with side shields. Safety
glasses with side shields do not provide adequate protection from splashes;
therefore, when the potential for splash hazard exists other eye protection
and/or face protection must be worn.
Eyewash
Where the eyes or body of any person may
be exposed to flammable liquids suitable facilities for quick drenching
or flushing of the eyes and body shall be provided within the work area
for immediate emergency use. Bottle type eyewash stations are not acceptable.
Fume hood
When possible experiments involving greater
than 500 mL of flammable liquids should be carried out in a fume hood.
Glove (dry) box
Not applicable
Gloves
Gloves should be worn when handling flammable
liquids. Disposable latex or nitrile gloves provide adequate protection
against accidental hand contact with small quantities of most laboratory
chemicals. Lab workers should contact OEHS for advice on chemical resistant
glove selection when direct or prolonged contact with hazardous chemicals
is anticipated.
Hazard assessment
Hazard assessment for work involving flammable
liquids should thoroughly address the issues of proper use and handling,
fire safety, chemical toxicity, storage, and spill response.
OEHS Notification
Not applicable
Protective apparel
Lab coats, closed toed shoes and long sleeved
clothing should be worn when handling flammable liquids. Additional protective
clothing should be worn if the possibility of skin contact is likely.
Safety shielding
Safety shielding is required any time there
is a risk of explosion, splash hazard or a highly exothermic reaction.
All manipulations of flammable liquids which pose this risk should occur
in a fume hood with the sash in the lowest feasible position. Safety shielding
is required any time there is a risk of explosion, splash hazard or a highly
exothermic reaction. Portable shields, which provide protection to all
laboratory occupants, are acceptable.
Safety shower
A safety or drench shower should be available
in a nearby location where the flammable liquids are used.
Signs and labels
Containers: All flammable liquids must
be clearly labelled with the correct chemical name. Handwritten labels
are acceptable; chemical formulas and structural formulas are not acceptable.
Special storage
The storage of flammable and combustible
liquids in a laboratory, shop or building area must be kept to the minimum
needed for research and/or operations. If more than 5 gallons of flammables
are present outside of safety cans per 100 square feet of area, a flammable-liquids
storage cabinet is required. Flammable-liquids storage cabinets are not
intended for the storage of highly toxic materials, acidS, bases, compressed
gases or pyrolytic chemicals.
Where feasible (if the quality of the solvent
will not be adversely affected) transfer flammable liquids from glass bottles
into metal safety cans.
Special ventilation
Manipulation of flammable liquids outside
of a fume hood may require special ventilation controls in order to minimize
exposure to the material. Fume hoods provide the best protection against
exposure to flammable liquids in the laboratory and are the preferred ventilation
control device. Always attempt to handle large quantities of flammable
liquids in a fume hood. If your research does not permit the handing of
large quantities of flammable liquids in your fume hood, contact the Office
of Environmental Health and Safety to review the adequacy of all special
ventilation.
Spill response
Anticipate spills by having the appropriate
clean up equipment on hand. The appropriate clean up supplies can be determined
by consulting the material safety data sheet. This should occur prior to
the use of any flammable liquids. Spill supplies for flammable liquids
are designed to control the liquid portion of the spill and minimize the
production of flammable vapors. Never use paper towels on large spills
of flammable liquids because it exacerbates vapor production.
In the event of a spill all personnel in
the area should be alerted. Turn off all sources of ignition. Do not attempt
to handle a large spill of flammable liquids. Vacate the laboratory immediately
and call for assistance.
Remain on the scene, but at a safe distance,
to receive and direct safety personnel when they arrive.
Vacuum protection
Evacuated glassware can implode and eject
flying glass, and splattered chemicals. Vacuum work involving flammable
liquids must be conducted in a fume hood, glove box or isolated in an acceptable
manner.
Mechanical vacuum pumps must be protected
using cold traps and, where appropriate, filtered to prevent particulate
release. The exhaust for the pumps must be vented into an exhaust hood.
Vacuum pumps should be rated for use with flammable liquids.
Waste disposal
Some flammable liquids are hazardous wastes.
Questions regarding waste disposal should be directed to the Office of
Environmental Health and Safety.
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