Transcript Document

Laboratory Safety Training
Grand Valley State University
General Lab Safety Information
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The Lab Safety Program
Introduction
GVSU is required to provide you with information
about the hazardous chemicals you use and how to
safely handle them. This training supports GVSU’s
obligations and is based on OSHA’s Hazard
Communication Program and Chemical Hygiene Plan
(collectively referred to as the Lab Safety Program).
This training provides general information about how
to handle chemicals safely. You should also receive
work area-specific training from your supervisor
or other designated trainer.
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Lab Safety Hazards
Typical hazards found in labs include:
Chemical Hazards:
- Fire/Explosion
- Chemical and Thermal Burns
- Absorption of Chemicals
- Inhalation of Chemicals
- Ingestion of Chemicals
Physical Hazards
- Slips, Trips and Falls
- Cuts, Scrapes, Bruises
Biological Hazards
- Contact with Infectious Agents
Electrical Hazards
Radiation Hazards
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Chemical Hazards
Health Hazards
Examples:
- Allergens
- Carcinogens
- Nephrotoxins (kidneys)
- Corrosives
- Hepatotoxins (liver)
- Neurotoxins
- Asphyxiants
- Teratogens
- Embryotoxins
- Toxic or highly toxic agents
- Irritants
- Sensitizers
- Reproductive toxins
- Hematoxins (blood)
- Mutagens
- Radioactive isotopes
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Chemical Hazards
Physical Hazards
Examples:
• Flammable and Combustible liquids & gases
- materials which under standard lab conditions can cause a fire in the presence of
an ignition source.
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Corrosives - a material that can corrode metal or tissue.
Water Reactive Materials – react with heat to form explosive gasses
Reactives – chemicals that release energy quickly, possibly resulting in detonation.
Oxidizers – Can explode in contact with organics or strong reducers
Pyrophorics – ignite spontaneously in air
Peroxide Forming Chemicals and Organic Peroxides
- unstable materials that are sensitive to shock or accidental ignition
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Compressed Gasses – present hazards from unplanned release
• Cryogens – Supercooled liquids that can damage body tissue
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Routes of Exposure
INHALATION of vapors, gasses, mists, or particulates.
SKIN CONTACT with certain chemicals can cause damage to
skin tissue or allow absorption of chemicals into the blood.
INGESTION through the gastrointestinal Tract.
INJECTION from skin punctures from contaminated objects.
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Identifying Chemical Hazards:
The MSDS
Material Safety Data Sheets are designed to provide
specific information about chemicals, such as
physical properties, physical and health hazards, and
proper handling procedures.

MSDS’s should be readily accessible to employees
using the products. You should be informed of the
location of MSDSs by your supervisor, and how to
obtain the MSDSs. Familiarize yourself with the
contents of the MSDS for any particularly hazardous
material.
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Labeling and Storage:
General
Physically separate incompatible chemicals according to physical hazard class
Ensure that storage area is dry and well ventilated
Store chemicals away from heat sources and post signs on chemical storage areas
Store liquids in spill trays
Ensure all containers are in good condition, properly capped, and labeled:
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For Containers labeled by the manufacturer inspect the labeling on incoming
containers and replace damaged or semi-attached labels.
For transferred products or prepared solutions labeled by the user, label
each container with the chemical name and hazard warning, including
peroxide forming chemicals. Refer to the MSDS for hazard warnings.
For a new compound, treat appropriately. The hazards of the new
compound should be understood before making it.
For unattended operations all containers, regardless of hazard, must be
labeled if left unattended.
For multiple small containers, either label with abbreviations with a key in a
visible location or label the box or tray that they are stored in.
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Safe Use and Storage:
Flammable & Combustible Materials
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Flammable materials have flash points < 100oF (37.8oC).
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Store in NFPA approved flammable liquid containers (‘safety cans”)
or flammable liquid storage cabinets or in designated areas.
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When dispensing from metal or other conductive containers proper
grounding of the containers is necessary.
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Ensure fire extinguishers and/or sprinkler systems are in the area.
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Use only refrigerators designed for flammable
liquid storage.
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Flammable liquids should be stored away
from strong oxidizers, direct sunlight, and
heat sources, such as hot plates.
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Safe Use and Storage:
Corrosives
• A substance that causes destruction or permanent changes in
human skin tissue or is highly destructive to steel.
• Segregate acids from bases
• Never add water to acid.
• Liquid corrosives should be stored below eye level
• Containers and equipment used for storage and processing of
corrosive materials should be corrosion resistant.
• For all chemicals: Wear proper personal protective equipment
and know the location of eyewash and safety shower.
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Safe Use and Storage:
Oxidizer
• Agents which are known to readily give up oxygen and gain
hydrogen. Fire and explosion hazards.
• Store oxidizers in containers with tight fitting screw-top lids.
• Store away from flammables, organics, and reducers.
• Know the reactivity of the materials you are working with in the
experiment or process.
• Ensure there are no extraneous materials in the area that could
become involved.
• If the reaction is anticipated to be violent or explosive, use shields
or other methods for isolating the materials or the process.
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Safe Use and Storage:
Water Reactives and Pyrophorics
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Water Reactive materials include alkali metals such as
lithium, sodium, potassium, acid anhydrides, and acid
chlorides. Do not use in the presence of water!
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Pyrophoric materials can ignite spontaneously upon contact
with air. Some include silane, silicon tetrachloride, and white
or yellow phosphorous.
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Water reactive and pyrophoric materials should be stored in
inert environments.
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Know the properties of the material and use proper materials
for dispensing.
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Ensure proper fire extinguishers are available and know the
locations of safety showers.
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Never work alone with pyrophoric materials
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Safe Use and Storage:
Peroxidizable and Unstable Chemicals
• May undergo auto-oxidation to form peroxides which may explode.
Peroxides can form even if a container has not been opened, necessitating
careful handling.
• Dispose of or check for peroxide formation after the recommended time: 3
months or one year, depending on the chemical.
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Do not open any container that has obvious solid formation around the lid.
Follow the same basic handling procedures as for flammable materials.
Store away from light and heat
• Unstable materials can spontaneously release large amounts of energy
under normal conditions, or when struck, vibrated, or otherwise agitated.
• Date all containers of explosive or shock sensitive materials upon receipt.
• If there is a chance of explosion, use barriers or other methods for
isolating the materials or the process.
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Safe Use and Storage:
Cryogenics
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Liquids and/or gasses capable of achieving very low temperatures. Typically liquid
nitrogen, Oxygen, and CO2.
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Hazards include fire, explosion, pressure buildup, frostbite, and asphyxiation.
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In addition to hazards associated with compressed gas, cryogens have two unique
properties:
 Extremely low temperatures can freeze human tissue and strong materials can
become weak or brittle.
 Cryogenic liquids can create large volumes of gas when they vaporize which
can rupture a vessel or displace oxygen.
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Use proper PPE when using and use rubber or wood tongs to remove materials
immersed in cryogens.
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Cylinders and dewars should not be filled to more than 80% capacity.
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Storage of radioactive, toxic, or infectious agents should be placed in plastic
cryogenic storage ampoules.
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REHEAT COLD SAMPLES slowly.
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Safe Use and Storage:
Compressed Gasses
Cylinders with regulators shall be individually
secured. Only cylinders with valve protection
caps may be secured in groups.
Cylinders must be secured in an upright position.
Use suitable racks, straps, chains, or stands to
support the cylinders.
Use an appropriate cart to
move cylinders.
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Safe Use:
Hazardous and Toxic Substances
In addition to the physical hazards of a chemical, it may have additional
hazardous or toxic characteristics. OSHA requires labs to identify
“Particularly Hazardous Substances” that require additional special
handling. These include:
• Carcinogens – As identified by the OSHA-Regulated carcinogen list, the
National Toxicology Program, or the International Agency for Research on
Cancer.
• Reproductive Toxins – A list of these can be obtained thru the Lab Safety
Office.
• Acutely Toxic Substances – Determined by the LD-50 or LC-50 of the
chemical.
It is the responsibility of the Principal Investigator to identify these and
communicate hazards and precautions.
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Personal Protective Equipment
Eye and Face Protection
Safety Glasses/Goggles: Provide protection against flying
particles striking the eye. Required where impact or hazardous
materials hazards exist. Special eyewear is required for intense
light such as lasers, UV or welding.
Chemical Splash Goggles: Provide both protection from both
impact and chemical splash. Required when working with
corrosives or particularly injurious chemicals or anywhere where
a chemical splash hazard exists.
Face Shield: Provide an additional level of protection when
working with larger quantities of materials with ah high
probability of eye and face injury exists
-Note: Contact lenses do not provide eye protection in the lab; however their use is acceptable as long as
appropriate eye protection is used and the MSDS does not identify restrictions
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Personal Protective Equipment
Skin and Body Protection
Protective Clothing: The level of protective clothing will vary depending
upon the hazards present. If there is a reasonable risk of splash, skin
surfaces should be protected. Lab coats, coveralls, aprons, or Tyvek
may be necessary for corrosive or irritant chemicals and biological
hazards.
Footwear: Due to chemical and physical hazards in the lab, open toed
shoes and sandals are not permitted. Chemical resistant overshoes,
boots or shoes may be necessary when working with corrosives or
large quantities of corrosives.
Gloves: Should be worn when working with hazardous chemicals,
biological hazards, unknown toxics, corrosives, sharp objects, or
hot/cold objects. Some gloves may be incompatible with certain
chemicals, so consult MSDS or the glove manufacturer.
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Personal Protective Equipment
Respiratory and Hearing Protection
Respirators: Required respirator use is required only where
engineering controls such as general ventilation do not reduce
exposure to acceptable levels. Paper masks may reduce
nuisance dusts or vapors, however they are not sufficient in
areas with respiratory hazards.
Hearing Protection: In areas with noise levels above 85 decibels
hearing protection is required. These conditions rarely occur at
GVSU, however hearing protection such as earplugs may
provide comfort in a noisy environment.
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Safety Equipment
Safety Showers and Eyewash Facilities: Eyewash facilities are required
in or near all labs that use or store hazardous chemicals. Labs with more
corrosive chemicals may be equipped with safety showers. Prior to
working in the lab identify the nearest eyewash and shower. Notify
Facilities or Lab Safety if the shower or eyewash is not operational or
inaccessible.
Ventilation: All operations that could generate air contaminants or have the
potential to ignite or react should be done in fume hoods or use other
ventilation. The hood should pull +/- 100 CFM. For safety and energy
efficiency, keep the hood closed at all times when not in use. Biosafety
cabinets are designed for protection from biological materials and should
not be used for hazardous chemicals that should otherwise be used in a
fume hood.
First Aid Kit: A first aid kit should be available in all labs. Locate the kit in
the lab and ensure it is adequately stocked.
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Incident Response
Fire and Spill Response
Fire: Individuals are not require to fight fires. Faculty and staff who have may
choose to use fire extinguishers or other means to extinguish small fires.
For major fires:
1. Pull the Alarm
2. Evacuate (close the door behind you)
3. Notify responders or public safety of the nature of the fire.
Small Chemical Spills: Assess the hazard and ability to properly clean up.
Use appropriate PPE and follow cleanup and disposal procedures outlined
on MSDS. For biological hazards identify proper disinfection procedures.
If you are unsure contact the Lab Supervisor or Lab Safety Office.
Larger Spills: If fire or health hazards exist, call 911. For larger contained
spills that do not present fire or health hazards contact Public Safety or
building security.
-Labs using chemicals and biological hazards with greater risk should develop
a spill response plan and spill kits should be available.
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Incident Response
Medical Emergencies
If immediate first aid is needed for an injury or illness dial 911. Only
trained individuals should respond to an injury or illness or
administer first aid.
For chemicals on skin, eyes or clothing flush with water for no less
than 15 minutes. Consult MSDS for specific instructions or call
911.
For skin contact with infectious agents wash with soap and water
for at least 1 minute. If skin is punctured wash and dial 911.
For Ingestion or symptoms of inhalation consult the MSDS and
contact 911 or poison control.
Complete the injury form provided in each lab.
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Waste Disposal
 It is the responsibility of the lab supervisor or principal investigator to
properly characterize the waste generated in the lab. Consult the Lab
Safety Office for assistance.
 Each lab has an area with receptacles for accumulating waste.
 Waste is collected in the lab in clearly labeled and secured containers.
 Chemical waste may be mixed, only if compatible.
 When the waste container is full, move it to the designated
waste storage site in your location.
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General Lab Safety Rules
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Know the hazards, the worst possible outcomes, and personal protective equipment
and take necessary precautions.
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Familiarize yourself with emergency equipment (alarms, extinguishers, showers,
eyewash, evacuation routes.
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Review MSDS’s for chemicals and understand the chemical hazards, safe use and
handling, and response procedures.
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Be alert to unsafe conditions and notify as appropriate.
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Avoid direct contact with any hazardous chemical.
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Wash hands thoroughly with soap and water after handling chemicals or biological
materials.
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No eating, drinking or smoking in the lab.
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Do not mouth pipette.
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General Lab Safety Rules
(continued)
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Do not use refrigerators or microwave ovens that have been used with chemicals for
food storage or prep.
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Keep work areas clean and uncluttered.
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Storage of chemicals at a lab or bench must be kept to a minimum and understand
incompatible materials.
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Dispose of hazardous waste as described in GVSU’s Hazardous Waste Management
Plan.
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Clean up non-hazardous chemical spills immediately.
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Do not block exits, access to emergency equipment, or controls and do not use
hallways or stairwells for storage.
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Follow proper safety precautions for cylinders.
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All containers must be labeled with the contents
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General Lab Safety Rules
(continued)
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When transporting hazardous materials outside the laboratory, carry glass
containers in a bottle carrier or use a cart with raised edges.
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Unattended Operations: Develop a protocol with the lab supervisor for
operations that will be left unattended. Post warning notices, including
contact name and phone # if hazardous conditions may be present.
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Working alone is always discouraged and can only be done with approval
of the lab supervisor, who should develop protocols for working alone.
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Laboratory supervisors shall maintain a current and comprehensive
chemical inventory of the chemicals in their lab and have MSDS’s available
and accessible for each chemical.
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Lab Specific Safety
In addition to this presentation, safety training is not complete without a
review of hazards specific to the lab space or research project. Consult
your Lab Supervisor, Principal Investigator or the Lab Safety Specialist.
Areas to consider include:
 Chemical Hazards – Review the chemical inventory and understand the
hazards and safety precautions with their use.
 Biological Hazards –Understand the nature of bacteria, viruses, or other
microorganisms, the potential for exposure and safety precautions.
 Physical Hazards – In what ways might you be injured in the lab…sharp
edges, heavy equipment, slipping/tripping, falling objects, burns etc.
Most injures occur from physical hazards in the lab.
 Electrical Hazards – If equipment is used understand the safe use and
precautions to prevent contact with electrical or moving parts.
 Light and Ionizing Radiation Hazards
 General lab procedures and specific housekeeping tasks
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