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How Do Nuclear Submarines Make Oxygen?- Smarter Every Day 251
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مستوى CEFR
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hey it's me destin welcome back to
smarter every day this is a lunar lander
that's a different series we're starting
on smarter every day
this is a nuclear submarine we are now
really far
into the nuclear submarine deep dive
here on smarter every day and today
we're going to answer a question that
i've always wanted to know submarines
are designed to stay underwater as long
as possible and sometimes they can't
even go to the surface if they want to
like right now the uss toledo is
currently under the ice which makes it
impossible to surface to get fresh air
how do you create oxygen on board a
submarine because if you think about it
if you're on board with a lot of your
crewmates and we're taking in oxygen and
we're breathing out carbon dioxide
eventually the atmosphere on the inside
of the submarine is going to become
soured so today on smarter every day we
are going to investigate
how to create oxygen onboard a submarine
and how to remove carbon dioxide from
the atmosphere
and we're going to have two ways to do
both let's get on board the toledo
and let's understand how to create
breathable air
on a submarine let's go get smarter
every day
[Music]
okay so in order to keep people alive on
the boat we have to have an atmosphere
at each location where each body is that
can keep that one body alive right
so ventilation is key if you have
different compartments that can be
closed at different times on boats for
different reasons for example a huge
pileup of people in the place where
everybody sleeps you're going to be
creating a lot more carbon dioxide in
that location than other places on the
boat
but we have to keep the entire
atmosphere livable throughout the boat
so in order to do this they monitor
the atmosphere of every position in the
boat that's important with a system
called
cams the central atmospheric monitoring
system
so the first thing we're going to do is
go figure out how to measure the
atmosphere
at any place in the boat and then we'll
address how we deal with it with carbon
dioxide or oxygen or whatever anyway
let's go check out cams i'm destin i'm
dell dal i'm going how do you spell that
d.o.w d.o.w dow jones awesome man where
are you from
i'm from ohio hello what's up cool man
nice to meet you
yeah so so what did what do you do up
here so uh sharon well
i'm a machinist man auxiliary or anger
they're basically mechanical hold though
practically on the boat so where are you
monitoring the oxygen levels
so to mark the oxygen levels uh some cup
of middle level
called cams yeah central atmosphere
monitoring station
and uh we have a couple watching the
monitors auction levels on there can you
show me that
yes yep let me get around you
we're gonna see where the oxygen gets
monitored yeah
so this is in the middle of the boat yes
and uh it has different stations we can
monitor
and take samples of the air to monitor
our atmospheres
so right now you're looking at how much
o2 is on the boat yes carbon monoxide
i'm really glad that there's not any
there r114 so that's refrigerant yes
yeah so you're monitoring that as well
basically monitoring the
good gases and the bad gases basically
gotcha and so
you've got co2 hydrogen nitrogen water
that's cool and so this is the total
pressure on the boat it is
that's cool well in each compartment it
is
like like i'm saying we have different
can you show me yeah
it's like we take different uh sample
like sampling uh panel index
we can turn the dial to different
stations so right now you're looking at
the fan range yes
so if you wanted to go what what's okay
to look at
it's got a cheap power supporters
and so this is updated so it takes a
second so this bar has to go
all the way across for an update yeah
kind of slow but
so clearly you have some type of
you have some type of alarm that has to
oh yeah yeah if
oxygen gets too high or if it gets too
high or something gets too low
it'll alarm it'll make a beeping sound
so in the event that we have a bad gas
that you know we have a leak of
refrigerant for example
do you have a way of finding the leak so
i guess you could go to the panel
and then you could select different
sources and you can see where it's high
yes and so that isolates it to that
section of the boat right yes
but then how do you find the actual leak
like if it comes down to a pipe how do
you find
the leak on the pipe so for like uh r134
we have uh
we call them sniffers and uh they detect
uh where r134 is coming out of the
piping or the plant and a little alarm
when uh it attacks it so is it like it
sounds like a geiger counter when you
get closer to it or something yeah
it does so can i see one yeah
this is how the sausage gets made right
here this is how you keep yourself alive
on a sub
okay they're like
i guess we'll just show him the oxygen
stuff and then i'm really excited about
this
here we
you know go sniper sniffer can we get
sniffers sure
okay step away
this is it yep so this is a universal
refrigerant leak detector
so can you show me how to use it yeah so
this is what it looks like when we find
a leak
so that's how that's how you find the
leak yes and then we can also switch
to small medium large leaks so looking
for a small leak
uh put this small because we won't
detect it if it's large
you gotta have a large setting so we'll
go through i guess r134 right here
you'll go through and you just drag
you'll drag it through the piping
very slowly just like coloring in
kindergarten
basically yes do you have something like
this for each bad gas
we have a trigger kit it monitors a it
tests like
the sample the air they look like little
tubes get the brake and you have to pump
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