unit 1 – lecture 1. lab safety how can you maintain lab safety? stop to think use common sense...
TRANSCRIPT
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Unit 1 – Lecture 1
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Lab SafetyHow can YOU maintain lab safety?
STOP to thinkuse common senseconsider the consequences ASK the teacher if in doubt
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Proper Attire - Discussavoid floppy/dangly items – WHY?
get tangled up in equipment & cause accidents
tie hair back – no loose/long hair – WHY?gets caught on things or can catch fire
easily [which smells really bad!]closed-toed shoes – WHY?long pants / no shorts – WHY?
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Know Your Equipment
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Know Your EquipmentGogglesMany states REQUIRE that students wear
protective goggles or glasses in the lab. WHY?
When would you wear which type of goggle?
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Know Your EquipmentFire Blanket
pull the blanket out of the wall holderwrap it around the victim to
smother the fire.
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Know Your EquipmentFire Extinguisher
carbon dioxide = general purpose
dry chemical [powder] electrical or other difficult fires
don’t use them on people…why?
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Know Your EquipmentFire Extinguisher – the Tag
tells what type you have [color can also do this]
indicates the last service/test date
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Know Your EquipmentFire Extinguisher – Operation
locate the “key” [round]twist the key to break the nylon
cord [can be hard to just pull]pull the key offpoint the nozzle in the direction of
the firesqueeze the handle to begin spraycarbon dioxide or powder helps cool the
fire, restrict oxygen to the firefire goes out
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Know Your EquipmentEyewash Fountain
if you get something from the lab in your eye— GET IT OUT IMMEDIATELY!
run some water through the eyewash fountain before you use it.
retract your eyelid (hold it open); don’t squint—this restricts water access. run fresh water over your eye for several
minutes. (20 minutes for acids or bases)
go to the school nurse immediately afterward.
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Know Your EquipmentFirst Aid Kit
located in Mr. Jackson’s roomfor serious injuries the nurse or 911 will be
called.
Discuss – what’s in a first aid kit?
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Know Your EquipmentFume Hood
used for some reactions that give off vapors
that you can smell and those you cannotdraft of the hood sweeps away vapors so
that the lab itself maintains reasonable air quality.
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Know Your EquipmentSafety Shower
used in emergency ONLYex: you are [or a lab mate is] ON FIRE
pull the handle—a deluge of water will result.
flames will be rapidly extinguished NOT used for all firesshould also be used in the event of a massive
dangerous chemical spill on yourself or a lab mate
this will seldom be necessary.
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OtherBroken Glass:
announce something’s been brokenno one should move around until cleanedclean immediately
not with your handsplace the broken glass in a SHARPS
containerthick walled carton, that will be sealed and
discarded as such. if such a container is not available, the
trash can is an acceptable substitute.
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OtherMaterial Data Safety Sheets [MSDS]
attached to chemicals when purchasedtypically still attached to most chemicals hereall potentially harmful chemicals in the lab
must have an MSDS on filemay find other/more detailed MSDS
sheets in a chemical stock room if needed
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Yellow often means reactive with water!!!
HONORS ONLY
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NFPA Label – Discuss Summarize the __ of/on the NFPA label.
shapelocation of the colorsmeaning of the colors
HONORS ONLY
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Student Use of the LabNO unauthorized or unmonitored labsNO food or drinkDO NOT eat or drink from lab equipment
you never know what someone did before you!
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Student Use of the LabDO NOT smell a flask/beaker/etc directly …waft it if absolutely necessary not near
your faceBE CAREFUL!!! Do not attempt to touch
something to see if it’s hot. Do not hand a hot item to someone else.
heat tubes/beakers/etc pointed AWAY from others in the room
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Student Use of the LabAlways Add Acid to water, NOT the
other way around. adding water to acid can cause the acid to
splash.the heat generated by the reaction will be
lessened
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Student Use of the Labread & complete [re-write] the procedure
[ALL of it] BEFORE lab daymake sure your materials are set up correctly
and completely, even if they were there before you came.
if using matches, light one BEFORE you turn on the gas – the wet the match and put it in a container, not the sink
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Student Use of the LabNO HORSEPLAY!!exit the lab in a well-ordered
fashion
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