Lab Safety 3 Hazardous Waste
Summary
TLDRThe video script emphasizes the importance of laboratory safety, particularly avoiding contact with hazardous chemicals. It highlights the use of fume hoods to manage volatile chemicals and prevent inhalation. The script also discusses proper waste disposal, stressing the need to collect hazardous waste—both liquid and solid—using designated containers. It concludes with a reminder to always follow instructor guidance on waste disposal to minimize environmental impact.
Takeaways
- 🧪 Safety in the laboratory is crucial to avoid contact with hazardous chemicals.
- 👃 Breathing in volatile chemicals is a significant hazard, and fume hoods are used to mitigate this risk.
- 🌪️ Fume hoods maintain negative pressure to draw in air and prevent hazardous gases from escaping into the room.
- 🔬 When working with volatile chemicals, always follow your instructor's guidance on using fume hoods.
- 🧼 Treat the fume hood space with the same respect for cleanliness as you would a lab bench.
- 💨 Closing the fume hood sash is important to conserve energy and prevent unnecessary air loss.
- 🚮 Proper waste disposal is essential; never throw hazardous waste in the garbage or down the sink without instruction.
- 🗑️ Solid waste should be placed in designated containers provided by the instructor.
- 💧 Liquid waste requires careful handling, using containers with locking lids to prevent leaks and spills.
- 🛡️ The instructor will provide guidance on the proper disposal of different types of waste to protect the environment.
Q & A
What is the primary goal of safety in the laboratory?
-The primary goal of safety in the laboratory is to avoid contact of hazardous chemicals with one's skin, eyes, or ingestion, and to prevent their release into the environment.
How can breathing in hazardous chemicals be harmful?
-Breathing in hazardous chemicals can be harmful as it can lead to health issues due to the inhalation of volatile and toxic substances.
What are fume hoods and what is their purpose?
-Fume hoods are safety cabinets designed to protect users from hazardous gases by drawing in air from outside, circulating it, and then exhausting it outside, preventing the release of harmful gases into the laboratory environment.
What is the sash in a fume hood and how does it function?
-The sash is the window in a fume hood that can be opened or closed. It is designed to maintain a negative pressure inside the hood, ensuring that air and hazardous gases are drawn in and expelled outside.
Why is it important to keep the fume hood sash closed when not in use?
-Keeping the fume hood sash closed when not in use is important to maintain the negative pressure inside the hood and to prevent unnecessary air and heat loss from the laboratory, which can be costly, especially in winter.
How should one prepare and clean a fume hood before and after use?
-One should treat the space in a fume hood similarly to a common lab bench, ensuring it is clean before starting work and cleaned thoroughly after use.
What are the two main types of chemical waste that need to be managed in a laboratory?
-The two main types of chemical waste that need to be managed are liquid and solid hazardous waste.
How should solid waste be disposed of in a laboratory setting?
-Solid waste should be placed in a designated container, similar to a large mason jar, provided by the instructor for the collection of solid hazardous waste.
What is the procedure for handling liquid waste in a fume hood?
-Liquid waste should be poured into a container with a locking lid within the fume hood, ensuring the lid is open and locked while pouring, and then closed securely after use.
Who is responsible for collecting and handling hazardous waste in the laboratory?
-Hazardous waste is collected by the hazardous waste staff who are responsible for its proper handling and disposal.
What is the most important rule regarding waste disposal in the laboratory as per the script?
-The most important rule is to never throw any waste in the garbage or down the sink without being instructed by the instructor that it is safe to do so.
Outlines
🧪 Laboratory Safety and Chemical Handling
This paragraph emphasizes the importance of safety in the laboratory, particularly the avoidance of contact with hazardous chemicals. It highlights the risks of inhaling volatile chemicals such as concentrated hydrochloric acid, sulfuric acid, and ammonia. The use of fume hoods is introduced as a safety measure to prevent the inhalation of hazardous gases. Fume hoods are described as safety cabinets that draw in air from outside, circulate it, and then expel it outside, maintaining a negative pressure to prevent the spread of hazardous fumes. The sash of the fume hood is a crucial component that, when opened, allows for the circulation of air but should be closed when not in use to conserve energy and maintain safety. The paragraph also stresses the need to keep the fume hood clean and ready for use, similar to a lab bench. Additionally, it discusses the proper disposal of chemical waste to minimize environmental exposure, detailing the separation of liquid and solid waste into designated containers and the importance of following instructor guidelines for waste disposal.
Mindmap
Keywords
💡Safety
💡Hazardous Chemicals
💡Fume Hood
💡Volatile
💡Negative Pressure
💡Sash
💡Hazardous Waste
💡Waste Disposal
💡Instructor
💡Environmental Protection
💡Energy Conservation
Highlights
The importance of safety in the laboratory to prevent hazardous chemical contact.
Avoiding inhalation of volatile chemicals as a key safety measure.
Examples of volatile and hazardous chemicals: concentrated hydrochloric acid, sulfuric acid, and ammonia.
The function and purpose of fume hoods in laboratory safety.
Fume hoods as safety cabinets with negative pressure to prevent chemical exposure.
Instructions on using fume hoods properly during chemical reactions.
Maintaining cleanliness of the fume hood space as part of lab etiquette.
Closing the sash of the fume hood to conserve energy and maintain safety.
Minimizing chemical exposure to the environment by proper waste disposal.
Differentiating between liquid and solid hazardous waste disposal methods.
Proper handling and storage of solid waste in designated containers.
Safe transfer of liquid waste into containers with locking lids.
Never leaving liquid waste containers open to prevent accidents.
Collection and proper handling of hazardous waste by specialized staff.
The critical rule against disposing of waste in regular trash or sinks without instructor permission.
Instructors will guide on proper waste disposal to ensure safety and environmental protection.
Transcripts
so remember the idea of safety in the
laboratory is to avoid contact of
hazardous chemicals with you with your
skin
or your eyes and or ingesting
ingestion for yourself or for others or
the environment and so
one of the worst ways that you can have
uh chemicals come into contact with is
to breathe them
and so now and then you'll be using uh
chemical reactions or chemical reagents
that
are volatile meaning they they make
gases
that escape and that are hazardous
and some examples of this are
concentrated hydrochloric acid a
concentrated
sulfuric acid or a concentrated ammonia
that you want to not breathe and so we
have for that is we have
fume hoods and so fume hoods are
essentially safety cabinets
where air comes in from outside
and circulates in this box and then is
drawn back
back outside and if you open up this
window here it's called a sash
what happens is the safety cabin at the
hood is designed to have a negative
pressure compared to the air in the room
so it
brings air in and there's
a a drawing of air roughly 80
cubic feet per minute that comes from in
here to out there
and so when you're working with um
things that you should not be breathing
your instructor will tell you when
you'll be doing that
you should be doing that in the fume
hood and they'll let you know when you
do that
when you do this you treat this space
as a common lab bench because because
not everybody has their own fume hood
so when you come in make sure it's clean
just like you do for your lab bench and
when you leave
working here you make sure it's clean
just like your lap bench
also when you're done close the sash
because if the sash is open it drags
more air
out out of the room and then out the
roof of the building
which just it's not a safety hazard but
it costs money to
because we lose heat particularly during
the winter on a snowy day like today
now let's talk about minimizing the
exposure of our
chemical compounds that we're using
with the environment we don't want to
have the chemicals that we're using
to be leaked into the environment and so
the main way we do that is by collecting
our hazardous waste our chemical
hazardous waste and there really are two
kinds of those there's liquids and
there's
and there's solids solids will go into a
container it's kind of like a big um
a big main age jar that will be put out
by your instructor
and for you to put any solid waste that
you have a little trickier to handle is
liquid waste so liquid waste goes into a
container and i'll show you how that
works
so in the hood fume hood
there's a bottle like this that has a
locking
lid that you open up and lock it
to hold open while you pour things this
should never be left open
overnight it's okay to leave it open
while you're doing your hazardous waste
transfer into here and then these are
are collected by the hazardous waste
staff
and handled properly
[Applause]
the most important rule for you is that
you should never throw
any waste in the garbage or down the
sink
without being instructed that that's
okay by your instructor
so generally your instructor will tell
you what
waste goes where
関連動画をさらに表示
General Lab Safety
Chemistry Lab Safety Video
IPA SMA Kelas 10 - Laboratorium IPA & Keselamatan Kerja (Simbol-Simbol Bahan Kimia) | GIA Academy
Gaya Hidup Berkelanjutan : Pengertian & Jenis-jenis Sampah, Sampahku Tanggungjawabku (Projek P5)
Construction Safety: Chemical Safety and Hazard Communication
Waste- Types and Classification
5.0 / 5 (0 votes)