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Personal safety and safety of othersBuilding protectionRegulatory compliance
Laboratory SafetyIntroduction
Purpose of Laboratory Safety Training
OSHA’s Lab StandardPrudent Practices in the Laboratory
Laboratory SafetyIntroduction
Chemical Hygiene Plan
www.units.muohio.edu/ehso/
Know your surroundings
ExitsEyewashes and Safety showers Fire ExtinguishersFirst Aid kitsPhones
Laboratory SafetyIntroduction
Emergency telephone numbersMedical EmergencyChemical SpillsGas odorsFire
Emergency Procedures
Laboratory SafetyIntroduction
Handbook posted in every laboratoryIncludes:
Work areas and floors are uncluttered.Equipment and chemicals stored properly.Wastes segregated and labeled.Spills cleaned up immediately.
General Housekeeping
Laboratory SafetyIntroduction
Electrical
Laboratory SafetyHazard Types:- Physical
Frayed or damaged cords.Equipment that ‘tingles’.Wet locations⌫ Not all outlets are Ground
Fault Circuit Interrupt (GFCI).
BE AWARE OF:
Laboratory SafetyHazard Types:- Physical
ElectricalHydraulicPneumaticMechanical
Lock-Out Tag-Out:
Identify all Sources of Energy
Laboratory SafetyHazard Types:- Physical
Compressed Gas Cylinders -CGC’s
HIGH PRESSURE - (1800-2400 psi)
Nature of Gas.Empty cylinders- (up to 141 lbs.)
BE AWARE OF:
Laboratory SafetyHazard Types:- Physical Compressed Gas Cylinders -
CGC’s
Transport upright with valve cap in place.Must be securedNO adaptations
Also:
Liquid nitrogenLiquid helium
Laboratory SafetyHazard Types:- Physical Cryogenic Materials
Hazards AsphixiationFrost biteFire
FireExplosionEmbrittlement
Liquid oxygenCarbon Dioxide (Dry Ice)
Laboratory SafetyHazard Types:- Physical- Biological Sharps
Be Aware:Do not cut or remove needles from syringes.No recapping.Dispose in a red sharps container.
If needle has come in contact with potentially infectious material, it should be disposed as an infectious waste.
Biological
Potentially Infectious Agents (PIA)– Any microorganism
(i.e., bacteria, virus, fungi) or helminth that if released could cause or significantly contribute to the increased morbidity or mortality of humans.
Laboratory SafetyHazard Types:- Physical- Biological
Chemical
Many chemicals have multiple hazards.
FlammabilityHealthReactivitySpecific Hazards
Laboratory SafetyHazard Types:- Chemical
General Hazard Categories
HEALTHFLAMMABILITYREACTIVITYPERSONAL PROTECTION
Flammability
Laboratory SafetyHazard Types:- Chemical
- Flammability
How readily a solid, liquid, vapor or gas will ignite and burn.
Solvents -Acetone, Toluene, Methanol, Ethanol, Ether, Xylene
Health
Poisons - Chlorine, Phenol, Sulfuric Acid, Mercury
Laboratory SafetyHazard Types:- Chemical
- Flammability- Health
Toxicity of substance.
Relative measurement of the stability of a certain material.
Reactives - Nitro and Diazo compounds. (unstable)Picric Acid. (shock-sensitive)Sodium and Potassium. (air/water reactive)
Reactivity
Laboratory SafetyHazard Types:- Chemical
- Flammability- Health- Reactivity
Special Hazards
Symbols or Letters depict other hazards.
Laboratory SafetyHazard Types:- Chemical
- Flammability- Health- Reactivity
Beware of Old Containers
Old containers may not be properly labeled.Over time properties of the contents can change in some special cases, due to contamination or evaporation.When discovered old containers should be promptly and properly disposed.
Laboratory SafetyHazard Types:- Chemical
- Flammability- Health- Reactivity- Special Hazards
Beware of Old Containers
Laboratory SafetyHazard Types:- Chemical
- Flammability- Health- Reactivity- Special Hazards
Limiting Personal Exposure
Laboratory SafetyLimiting Exposure
w/ Good Habits
By Building Good Work Habits– No:
• Eating, drinking, smoking, applying cosmetics while in the laboratory.
• Mouth pipetting.• Unauthorized experiments.
Limiting Personal Exposure
Know the hazards of the materials you will be using, before you use them.– Material Safety Data Sheet (MSDS).– Use other resources if necessary.
Laboratory SafetyLimiting Exposure
w/ Good Habits
Store Containers According to their Hazards.– Segregate!– Date peroxide forming
materials
Handle the container with care– Use a bucket to carry Acids or Bases.
Limiting Personal Exposure
Ground metal containers– If they contain flammable material
Laboratory SafetyLimiting Exposure
w/ Good Habits
Know the limitations and proper use of the Laboratory Hood.- Physical barrier to minor explosions, splashes,
fires, etc. - Somewhat contains spills due to failed
experiments and devices.- Work at least 4-6 inches back in hood can reduce
the vapor concentration at the face by as much as 90%.
- Pull sash down to levels marked on hoods with orange tape. Hoods checked annually.
Limiting Personal Exposure
Laboratory SafetyLimiting ExposureEngineering controls
Know the limitations and proper use of the Laboratory Hood.- Local exhaust to help minimize exposure to
chemicals.- Open and pour organic solvents in a laboratory
fume hood. - Use those solvents in a well ventilated area,
preferably in the fume hood.- Do not rely solely on hood for protection.
Limiting Personal Exposure
Laboratory SafetyLimiting ExposureEngineering controls
Selecting Proper Personal ProtectiveEquipment.
Limiting Personal Exposure
Laboratory SafetyLimiting Exposure
w/ Good Habitsw/ Proper PPE
Safety glasses allowed when:– Entering lab that is in
operation.– No risk of splash.
Eye Protection
Goggles required when:– Using reagents.– Risk of splash or aspiration.
Laboratory SafetyLimiting Exposure
w/ Good Habitsw/ Proper PPE
Projectiles– Exploding Glassware
Splash Risk– Chloroacetic acid
splashed into the eye.
Eye ProtectionReasons:
Laboratory SafetyLimiting Exposure
w/ Good Habitsw/ Proper PPE
All Gloves are not created equal.
Hand ProtectionBromine Splash
Ethyl Aziridinyl Formate- An organic chemical with
no warning properties.
Laboratory SafetyLimiting Exposure
w/ Good Habitsw/ Proper PPE
Selection guide for chemical resistant glovesSource: Industrial Hygiene Reference & Study Guide, First Editionhttp://www2.umdnj.edu/eohssweb/aiha/technical/ppe.htm#Gloves/Chemical
Glove Material Chemical Resistant To: Not Recommended for:
Nitrile rubber Solvents, oils, alcohols, some acids, and caustics
Ketones, oxidizing acids, nitrogen-containing organics
Butyl rubber Organics, Ketones, esters Aliphatic, aromatic hydrocarbons, halogenated hydrocarbons, gasoline
Natural (laytex) rubber Alcohols, acids, caustics, ketones Aromatics, halogenated solvents
Polyvinyl alcohol (PVA Most solvents including aromatic and halogenated hydrocarbons
Water-based solutions, inorganic acids, alcohols, caustics
Polyvinyl chloride (PVC) Alcohols, acids, caustics Aromatic and halogenated solvents, ketones
Neoprene Organic acids, caustics, peroxides, alcohols, phenols, petroleum solvents
Aromatic and halogenated solvents
Viiton Halogentated and aromatic solvents, alcohols
Laboratory SafetyLimiting Exposure
w/ Good Habitsw/ Proper PPE
Pants and closed-toe shoes are always recommended.Lab coats are also a good idea.Do not wear:
• Shorts.• Sandals or open toed shoes.
Proper Attire In LabLaboratory SafetyLimiting Exposure
w/ Good Habitsw/ Proper PPE
Wash your hands after handling chemicals
EVEN IF WEARING GLOVES!
Personal HygieneLaboratory SafetyLimiting Exposure
w/ Good Habitsw/ Proper PPEw/ Hygiene
Chemical Spills and Emergency Response
Small Spills– 1 Gallon or less
Large Spills– or unusually hazardous
In case of Fire– Pull alarm on the way
out.
Laboratory SafetyEmergency Resp.
Skin– Cleanse thoroughly with water for
15 minutes. Speed is important, do not wait.
Eye– Hold eyelids open and wash eyes
with gentle stream of water for 15 minutes.
Chemical Spills and Emergency Response
Laboratory SafetyEmergency Resp.
Cuts and Abrasions– If minor encourage “Self-Help”– If serious call 911
If you choose to assist in either case USE UNIVERSAL PRECAUTIONS
Emergency Response and Chemical Spills
Laboratory SafetyEmergency Resp.
Reporting unsafe practices and conditions
Immediately to Supervisor and/or Manager of Laboratories.Do not continue work if you suspect a safety problem.
When In Doubt . . . ASK!!!
Laboratory SafetyEmergency Resp.Reporting Accidents
Useful Web SitesMiami University’s Environmental Health and
Safety Offices: http://www.units.muohio.edu/ehso/
AIHA Laboratory Health & Safety Committee: http://www2.umdnj.edu/eohssweb/aiha/accidents/
Glove selection:http://www2.umdnj.edu/eohssweb/aiha/technical
/ppe htm#Gloves/Chemical
Laboratory SafetyWeb Sites