Safety In A Science Lab
Lab Safety: Everyone is Responsible! - (Student Worksheet / Quiz - Word Document Format)
  • "I didn't mean to" and "It wasn't my fault" are two statements that have no place in the lab. If someone is hurt or equipment is broken, these statements cannot undo the harm.
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  • Horse-play will not be tolerated. If it occurs, those involved will be disqualified from the lab and given a zero for the assignment.
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  • Lack of pre-lab preparation is the main threat to safety in our lab. If you and your group are unprepared, you will be unsure of yourself, waste time, and have a good chance of making a mistake that leads to a problem.
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  • At the beginning of each lab period, you will be given a chance to ask questions. If you are unsure of some procedure, now is the time to ask. Always pay close attention to any verbal instructions given at this time.
Protective Clothing:

 

 

 

 

 

 

  • Safety glasses with side shields should be used when in a lab situation.
  • If a spill happens in your eyes they should be flushed with water for at least 15 minutes.
  • Other protective clothing, such as gloves and aprons are at your option,
    unless otherwise noted.
  • Shoes shall be worn at all times in the lab. Sandals, open-toed shoes, and shoes with woven uppers, shall not be worn when there is a danger of spillage of corrosive or irritating chemicals.
  • Personal Protective Equipment (PPE) Training. Check This Link Out!

Contact lenses should NOT be worn in the lab.

  • It is almost impossible to remove contacts after chemicals have been
    splashed into the eyes. Chemicals trapped under contacts will damage the eye even more than normal.
  • The plastic used for some types of contact lenses is permeable to vapors found in the laboratory. If these vapors are trapped behind the lens, extensive irritation may occur.

Long hair and bulky clothing are dangerous in the lab.

  • There is a danger of catching fire, as well as being drawn through chemicals.
  • Wear appropriate clothing.
  • Tie back long hair.

Rings, watches, and jewelry are dangerous in the lab.

  • Corrosive or irritating liquids may get underneath a ring or watch and produce irritation.
  • Dangling jewelry may catch on a piece of labware and cause an accident.
Accidents Can Happen In The Lab
Remain calm!
A minor problem quickly
becomes a major one if you don't.

Report all accidents immediately, no matter how small.

Types of accidents and how you need to handle them:
Broken Glass:

The most common accident in the lab, even with the best of care.

  • If you are using the equipment properly, you will not get into trouble for breaking a piece of glassware.
  • If you are not using the equipment properly, or if horse-play is involved, you will be required to pay for the broken glassware.
  • If glassware is broken, stop where you are. Report the breakage to the teacher.
  • Do not move until the teacher says it is safe to do so. There will most likely be many small slivers of glass that you do not immediately notice.
  • If anyone is cut, report it immediately.
  • The Teacher will collect the broken glass, not you. More minor cuts occur after this type of accident than during it.
  • Chemical spills are often involved with glass breakage. When that occurs, follow those safety precautions too.
Cuts and Blood:

Do not come into contact with another person's blood.

  • Report the situation to your teacher and let him help the injured person.
  • There is always a possibility of infection, even with the most minor injury. For this reason you should report any cut or scrape, even if there is no visible blood.
  • If there is blood at any lab station, everyone is to stop what they are doing move to your seats until told it is safe to return to the lab.
  • Bloodborne Pathogen Training Check This Link Out!

Chemical Spills:

You are to treat all chemical spills as DANGEROUS.

Stop where you are and let the teacher tell you about what to do.

  • Did any of the spill get on your skin or clothing? Sometimes adding water is the worst thing you can do.
  • Depending on the chemical spilled, we might just have a mess to clean up or we might have a very dangerous situation.
  • The most potentially dangerous chemicals used in our lab are corrosive acids and bases. Even though you will normally be using chemicals that have been diluted, you should always treat acids and bases with care
  • Glass breakage often occurs along with chemical spills. If that happens, follow those safety precautions too.
Fires
Science Education Safety

Four things must be present at the same time in order to produce fire:

        1. Enough oxygen to sustain combustion,
        2. Enough heat to raise the material to its ignition temperature,
        3. Some sort of fuel or combustible material, and
        4. The chemical, exothermic reaction that is fire.

However, before deciding to fight the fire, keep these rules in mind:

  • Know what is burning.
      • If you don't know what is burning, you don't know what type of extinguisher to use
  • The fire is spreading rapidly beyond the spot where it started.
      • The time to use an extinguisher is in the beginning stages of the fire.
        • If the fire is already spreading quickly, it is best to simply evacuate the building.

Do Not Fight the Fire If:

  • You don't have adequate or appropriate equipment.

  • You might inhale toxic smoke.

  • Your instincts tell you not to.

The final rule:

  1. Always position yourself with an exit or means of escape at your back before you attempt to use an extinguisher to put out a fire.
  2. Always keep an exit at your back!
How to Fight a Fire with a Fire Extinguisher
Lab  Safety Pull the pin.
Middle School Science Safety Aim at the base of the fire.
Classroom Safety Squeeze the top handle or lever.
Science Class Sweep from side to side
until the fire is completely out.
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