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1
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- Division of Public Safety
- Dept of Environmental Health & Safety
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2
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- Minimize all chemical exposures.
- Avoid underestimating the risk.
- Provide adequate ventilation.
- Institute a Chemical Hygiene Program.
- Observe the PEL’s or TLV’s
- Observe all the rules of safety.
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3
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- PEL = Permissible Exposure Limit (OSHA)
- TLV = Threshold Limit Value (ACGIH)
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4
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- PEL’s and TLV’s are airborne concentrations of chemicals set as limits,
which are generally considered safe for the average worker.
- These limits are based on an average eight work hours in an average
forty hours work week.
- PEL’s are exposure levels regulated by OSHA, whereas TLV’s are exposure
guidelines suggested by the American Conference of Governmental
Industrial Hygienists (ACGIH)
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5
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- PEL’s and TLV’s can also be based on a fifteen minute exposure, which is
called STEL (Short Term Exposure Limit).
- There can also be a limit based on a maximum exposure with no time
average, which is called Ceiling.
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6
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- Limit exposure to chemicals
- Use proper controls
- Monitor for potential air contaminants
- initial monitoring
- periodic monitoring
- employee notification
- Medical surveillance
- Engineering controls
- Administrative controls
- Personal protective equipment (PPE)
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7
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- Avoid working alone.
- Clean up spills.
- Do not store or consume food or beverages in the lab.
- Do not smoke in the lab.
- Do not deliberately smell or taste chemicals.
- Do not use damaged glassware.
- Always shield Dewar (Vacuum) flasks.
- Wash up before leaving.
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8
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- No horseplay, practical jokes, or other acts of carelessness.
- Do not pipette by mouth.
- Wear proper PPE.
- Keep your work area clean.
- Properly label all chemical containers.
- Observe the MSDS
- Material Safety Data Sheet
- Post appropriate warning signs.
- Inspect all equipment for defects
- Be alert to unsafe conditions and correct them when detected.
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9
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- Know where the emergency equipment is kept.
- Know how to use emergency equipment.
- Post signs that indicate the location of emergency equipment.
- Keep emergency equipment unobstructed at all times.
- An emergency shower and eyewash station should be within easy reach.
- Know how to safety deal with chemical spills.
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10
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- Always wear proper eye protection in the lab.
- safety glasses or goggles
- Do not wear contact lenses in the lab.
- Wear proper gloves.
- Wear aprons or lab coats.
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11
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- Wear closed-toe shoes.
- Wear hearing protection if the noise level is greater than 85 dBA.
- Wash arms and hands immediately after working with allergens,
carcinogens, pathogenic organisms, or toxic chemicals.
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12
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- All electrical equipment and services must be grounded.
- Replace frayed or deteriorated electrical cords.
- Extension cords are for temporary use only.
- Do not place electrical cords where they will be subjected to wear by
friction or heat or where they may present a shock or fire hazard.
- Do not place electrical cords above ceiling tiles, through doorways or
walls, or where they will present a trip hazard.
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13
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- Store flammable chemicals in “Flammable Storage” or “Explosion Proof”
refrigerators or freezers only.
- Use explosion proof equipment when explosive vapors are present.
- Use proper guards
- rotating parts
- sharp edges
- hot surfaces
- machine belts, pto’s
- Do not use defective equipment.
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14
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- Radioactive materials
- Lasers
- Ultraviolet radiation
- Recombinant DNA
- Chemical carcinogens
- Infectious agents
- Bloodborne pathogens
- Compressed gas
- Cryogenic liquids
- Hazardous waste
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15
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16
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Notes
