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The Guide to Atmospherics and this page had loads of same info. Combined them.
imported>Phil235
(adding more details on Air Alarms. plus fixing one typo)
imported>Kingofkosmos
(The Guide to Atmospherics and this page had loads of same info. Combined them.)
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This is the Advanced [[Atmospherics]] Guide. If you're looking for a [[Atmospherics#ATMOS_QUICK_SETUP|Quick Setup Guide, see this]]. If you're ready to really learn about the atmospheric system, read on. By reading this guide you will learn how to transform Atmos from a waste of space to an actually useful addition. We will go through all kinds of theory, so this may be tough, but it will also ensure you know exactly how and more importantly '''why''' Atmos works the way it does, making you ready for all kinds of situations.
This is the Guide to [[Atmospherics]]. When properly initialized, Atmosia can keep the station aired-up through nearly any emergency. Improperly initialized, it's a waste of space at best and an outright fire hazard at worst.


Other Atmospherics related information:
If you're new to the job, feel free to jump straight to the [[#Setting Up Atmospherics|how to set up Atmos -section]]. If you're ready to really learn about the atmospheric system, read on. By reading this guide you will learn how to transform Atmos from a waste of space to an actually useful addition. We will go through all kinds of theory, so this may be tough, but it will also ensure you know exactly how and more importantly '''why''' Atmos works the way it does, making you ready for all kinds of situations.


[[Atmospherics items]]
[[File:Atmospherics.png|thumb|600px|The city of pipes and air, a peaceful place often left to its automatic work... But not today, thanks to you!]]


Other Atmospherics related information:


Let's start with some theory about the gases.
[[File:Canister.png|50px]] [[Atmospherics items]]




==The Gases and Their Functions==
==The Gases and Their Functions==
These are the different gases that can be found in game.
Let's start with some theory about the gases. Below are the different gases that can be found in game.
===Air===
 
A 1/5 gasmix of O2 and N2 (20% O2, 80% N2). The station is filled with this. Air in SS13 can be seen, strangely enough, as a 'watered down'-O2, with N2 being the water. Optimal pressure for humans is 101.3 kPa. Due to the minimum of 16 kPa of O2, the pressure of 101.3 kPa cannot be changed too much without the situation becoming excessively lethal. Under 16% oxygen? You start dying. Under 90 kPa due to fire from a while ago? You start dying. Be mindful of this.
===O<sub>2</sub>===
Oxygen. All humans, pets and lizardpeople need more than 16 kPa of oxygen in the air or internals to breathe. Any less and the creature starts to suffocate.


It is required to oxidize a [[plasma]] fire. A room with 100% plasma will not burn. More oxygen causes plasma fires to increase in heat and size. Oxygen mixed suddenly with heated plasma causes explosions. See [[Temperature]].


===O<sub>2</sub>===
Oxygen is an invisible gas. To detect it, use your [[PDA]] or a wall mounted [[Air Alarm]]. Oxygen [[canister]]s are marked in blue. [[Emergency Oxygen Tank]]s, filled with about 300 kPa, spawn in your emergency [[Internals Box]]. Larger [[Oxygen Tank]]s are in [[Emergency Locker]]s all across ship, which start with about 600 kPa.
Oxygen. You breathe this. Running out of O2 will cause your slow death by suffocation damage. It is also required for a fire to even start, and hold, ending the fire when the O2 or Plasma is depleted. Having less than 16 kPa of O2 flowing into your lungs chokes you.




===N<sub>2</sub>===
===N<sub>2</sub>===
Nitrogen. Soaks up heat in the air, and lowers the temperature of a fire. By association, it can very quickly lower the temperature of a fiery rupture to the point where the flames self-extinguish. Proof of this can be seen if you go down to the incinerator with a can of burnmix, and a can of 20% burnmix and 80% N2. The N2 contaminated fire will not burn nearly as hot or as well. This is why the Toxins guide recommends opening up a can of N2 to the air, it can and will save your life if there's a rupture. Due to the vastly higher heat capacity, N2 is incredibly better at stopping fires: in 100 kPa of N2/O2 80/20 and 100 kPa of O2 100, the N2/O2 is effectively 12200 kPa as opposed to 100 kPa in terms of soaking up heat and it doesn't allow the fire to grow in size as quickly, the combination of which can even lead to non-permanent ignition sources being snuffed out by themselves.
Nitrogen. Soaks up heat in the air, and lowers the temperature of a fire. By association, it can very quickly lower the temperature of a fiery rupture to the point where the flames self-extinguish.
 
Proof of this can be seen if you go down to the incinerator with a can of burnmix, and a can of 20% burnmix and 80% N2. The N2 contaminated fire will not burn nearly as hot or as well. This is why the Toxins guide recommends opening up a can of N2 to the air; it can and will save your life if there's a rupture.
 
Due to the vastly higher heat capacity, N2 is incredibly better at stopping fires: in 100 kPa of N2/O2 80/20 and 100 kPa of 100 % O2, the N2/O2 is effectively 12200 kPa as opposed to 100 kPa in terms of soaking up heat and it doesn't allow the fire to grow in size as quickly, the combination of which can even lead to non-permanent ignition sources being snuffed out by themselves.
 
Can be found in Atmospherics in red canisters.
 
 
===Air===
A 1/5 gasmix of O2 and N2 (20% O2, 80% N2). The station is filled with this.
 
Air in SS13 can be seen, strangely enough, as a 'watered down'-O2, with N2 being the water. Optimal atmospheric pressure for humans is 101.3 kPa. Due to the minimum of 16 kPa of O2, the pressure of 101.3 kPa cannot be changed too much without the situation becoming excessively lethal. Under 16 % oxygen? You start dying. Under 90 kPa due to fire from a while ago? You start dying. Be mindful of this.
 
Air canisters, marked in white, can be found in emergency storages.




===CO<sub>2</sub>===
===CO<sub>2</sub>===
Carbon Dioxide. An invisible, heavy gas, CO2 is one of the first and fastest gases the scrubbers suck out of the air. It chokes people effectively and quickly, and if you can be bothered to set the alarms up, will result in a invisible room that kills those in it. Takes some setup and can be very, very annoying. The emote for this at low levels is gasps.
Carbon Dioxide. An invisible, heavy gas, CO2 is one of the first and fastest gases the scrubbers suck out of the air. Humans produce very small amounts of CO2 through breathing.
 
It chokes people effectively and quickly, and if you can be bothered to set the alarms up, will result in a invisible room that kills those in it. Takes some setup and can be very, very annoying. Causes people to ''gasp'' at low levels.
 
Can be found in Atmospherics in black canisters.




===N<sub>2</sub>O===
===N<sub>2</sub>O===
Nitrous Oxide, a.k.a. Sleeping Agent. A white-flecked gas. Makes you laugh at low doses and at higher ones puts you to sleep. Scrubbers don't deal with it too well and portable scrubbers just choke on it. If using this as a sleep gas mix '''do not forget''' the O2 at at least 16 kPa, or you will kill someone.
Nitrous Oxide, a.k.a. Sleeping Agent. A white-flecked gas.
 
Makes you laugh at low doses and at higher ones puts you to sleep. Scrubbers don't deal with it too well and portable scrubbers just choke on it. If using this as a sleep gas mix '''do not forget''' to mix in at least 16 kPa of O2, or you will suffocate someone.




===[[Plasma]]===
===[[Plasma]]===
Toxins. The one truly flammable gas on the station, plasma is purple, and highly toxic. Of note is the fact that in the presence of any oxygen at high pressures, Plasma pumped into air, and Burn Mix (O2 and Plasma), can and will spontaneously ignite in an open area at high pressures.
Toxins. The one truly flammable gas on the station, plasma is purple, and highly toxic.
 
Of note is the fact that in the presence of any oxygen at high pressures, Plasma pumped into air, and Burn Mix (O2 and Plasma), can and will spontaneously ignite in an open area at high pressures.
 


===Physical Characteristics of Gases===
==Physical Characteristics of Gases==
Ideal gas law: '''''PV = nRT'''''
Ideal gas law: '''''PV = nRT'''''


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'''Heat Capacity''': A gasmix has heat capacity, and it is calculated by taking into account the quantity of all of the gases in the air and their specific heat. Oxygen has a specific heat of around 20, CO2 has 30, and N2 has 300. When you factor in the normal 70% N2 it leaves you with a very high specific heat. The higher the specific heat, the more energy required to heat up the mixture, meaning that with an air mix vs. pure O2 mix, it takes much more energy to heat the air than the O2, and the increase in energy required also decreases how much the fire spreads. Simply slowing it down means that heat energy will be 'soaked up' by the air instead of super-heating everything extremely quickly.  
'''Heat Capacity''': A gasmix has heat capacity, and it is calculated by taking into account the quantity of all of the gases in the air and their specific heat. Oxygen has a specific heat of around 20, CO2 has 30, and N2 has 300. When you factor in the normal 70% N2 it leaves you with a very high specific heat. The higher the specific heat, the more energy required to heat up the mixture, meaning that with an air mix vs. pure O2 mix, it takes much more energy to heat the air than the O2, and the increase in energy required also decreases how much the fire spreads. Simply slowing it down means that heat energy will be 'soaked up' by the air instead of super-heating everything extremely quickly.  
* Air: 250 <!-- Someone with better math skills check this out, it this true? [ (20*0,2)+(300*0,8) = 244 ~ 250 ] -->
* O2: 20
* O2: 20
* N2: 300
* CO2: 30
* CO2: 30
* N2O: 40
* N2O: 40
* Plasma: 200
* Plasma: 200
* Air: 250 <!-- Someone with better math skills check this out, is it correct? [ (20*0,2)+(300*0,8) = 244 ~ 250 ] -->
* N2: 300




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==Setting Up Atmospherics==
==Atmospherics Layout==
{| class="wikitable"
{| class="wikitable"
| [[File:atmos.png|thumb|499px|alt=Man in suit, tie and hat|How Atmospherics normally looks.]]
| [[File:atmos.png|thumb|499px|A wise Atmos Tech once said: "just stare at the pipes until you get it."]]
| [[File:Atmos_simplified.png|thumb|499px|Simplified picture of the Atmospherics pipe system. Yellow circles represent filters and the lightbrown circle represents the mixer. ]]
| [[File:Atmos_simplified.png|thumb|499px|"Simplified" picture of the Atmospherics pipe system. Yellow circles represent filters and the lightbrown circle represents the mixer. ]]
|}
|}
[[File:AtmosDerp.png|thumb|300px|right|The dumbass-version of the Atmos pipe system. See the steps what each colored circle means!]]
'''Here are two pictures of the atmospheric pipe system. Right one is a "simplified" version of the left picture. Yellow circles representing the filters which filter out a certain gas from the Waste In -gasmix. The light yellow circle near the lower middle represents the mixer which mixes two gases into one (N2 and O2 into a breathable air mix).
 
 
Atmospherics is pretty simple, but the pipe layout makes it slightly confusing for the untrained eye.
 
There are 4 major pipe "loops":
* The '''<span style="color:blue">dark blue pipe loop</span>''' is the distribution loop. It sends air to all the vents on the station for the crew to breathe.
* The '''<span style="color:cyan">cyan air mix pipe loop</span>''', which is specialized to mix and provide the air mix to the distribution loop, and is used to fill air pumps outside the front door of Atmospherics.
* The '''<span style="color:red">red/<span style="color:green">green</span></span> pipe loop''', which retrieves the gas in the station via the air scrubbers (red loop) and passes them through a set of filters (green loop).
* The '''<span style="color:yellow">yellow</span> pipe loop''', internal to Atmospherics, which is used for custom gas mixes that can be fed into the canister charging station in the middle of atmospherics, or fed into the mixing tank.
 
The tanks (the small rooms in space just outside of Atmos) of the station's atmospherics network, unlike in the rest of the station, are rooms filled with very high pressure of the appropriate gas. The output of these rooms are controlled by their respective Supply Control Computer, an on/off valve, and an output pump for each loop. Note that '''these rooms can be depleted''', especially if [[Traitor|someone]] makes a hole in a tank's external wall.
 
 
To understand how the breatheable air mix is mixed, try following these steps and looking at the map at the same time, it starts on the south end of Atmospherics, like so:
# The gasses are pumped through the  '''<span style="color:cyan">cyan tubes</span>''' from their respective tanks ('''N2''', '''O2''').
# They are mixed in the air tank ('''Air''') to a 1/5 mix of O2 and N2.
# The breathable gas is then pumped through the '''<span style="color:cyan">cyan loop</span>''' to the north of Atmospherics.
# And finally it's pumped into the '''<span style="color:blue">dark blue distro loop</span>''' and out to the station for everyone to breathe.


The pictures above show how Atmos starts up, but you don't want it to be like that for too long.


Let's make up an example situation to see how these pipes work:
Next let's make up an example situation to see how the waste system works in action:
# Scientist Bill messes up and fills the [[Toxins Lab]] with plasma but fortunately manages to evacuate the room safely.
# Scientist Bill messes up and fills the [[Toxins Lab]] with plasma but fortunately manages to evacuate the room safely.
# Being an otherwise ideal situation Atmos-wise, the Toxins Lab's air scrubbers have been set to filter out all hazardous gases (they're not set by default, this has to be done manually or by asking the AI to do it) and plasma starts to get sucked through the scrubber into the waste pipes.
# Being an otherwise ideal situation Atmos-wise, the Toxins Lab's air scrubbers have been set to filter out all hazardous gases (they're not set by default, this has to be done through the Air Alarm manually or by asking the AI to do it) and plasma starts to get sucked through the scrubber into the waste pipes.
# The plasma finally arrives to the Waste In -loop (the red pipe loop) at Atmos. It travels south through the pipes, its first stop being the N2 Filter.
# The plasma arrives to the Waste In -loop (the red pipe loop) at Atmos. It travels south through the pipes, its first stop being the N2 Filter.
# If there was any Nitrogen in the waste gas, it would get filtered out here, and the rest of the gas continues its journey through the waste loop, same thing happening at every filter.
# If there was any Nitrogen in the waste gas, it would get filtered out here, and the rest of the gas continues its journey through the waste loop, same thing happening at every filter.
# The plasma finally reaches the Plasma Filter.
# The plasma finally reaches the Plasma Filter.
# Here the plasma gets extracted from the waste gas and pushed into the big plasma tank-room outside the windows.
# Here the plasma gets extracted from the waste gas and pushed into the big plasma tank-room outside the windows.
# The plasma stays in the room until someone decides to pump it out.
# The plasma stays in the room until someone decides to pump it out.
# Scientist Bill by now notices that the Toxins Lab has no plasma anymore and is able to continue his work.
# Scientist Bill by now notices that the Toxins Lab has no plasma anymore and is able to safely continue his work. Yay!




'''MAKING ATMOS AS EFFICIENT AS POSSIBLE:'''
==Setting Up Atmospherics==
 
It's about time we stop with the theory and get down to business. The two machines at the top can dispense infinite pipes, and your wrench can disconnect and connect pipes. Remember, you cannot disconnect pumps when they are on.
It's about time we stop with the theory and get down to business. The two machines at the top can dispense infinite pipes, and your wrench can disconnect and connect pipes. Remember, you cannot disconnect pumps when they are on.


Next up is a very simple step by step guide how to set up the Atmospherics pipe system to be (nearly) as efficient as possible. Note that this is only one style how to set up the pipes. There are many ways and they have their own pros and cons.
[[File:AtmosDerp.png|thumb|300px|right|The dumbass-version of the Atmos pipe system. See the steps what each colored circle means.]]
Next up is a very simple step by step guide how to set up the Atmospherics pipe system to be (nearly) as efficient as possible. Note that this is only one style how to set up the pipes, there are many ways and they all have their own pros and cons!
# Get at least two Volume Pumps from the [[Pipe Dispenser]] at the north side of Atmos.
# Get at least two Volume Pumps from the [[Pipe Dispenser]] at the north side of Atmos.
# Replace the green circled normal pumps with volume pumps, making the waste gas -system 100x more efficient. We want the waste gas sucked out as soon as possible.
# Replace the '''<span style="color:green">green circled</span>''' normal pumps with volume pumps, making the waste gas -system >100x more efficient. We want the waste gas sucked out as soon as possible!
# Replace the blue circled normal pumps with volume pumps as well, but notice; there are risks involved and all of them are covered at the pros and cons -section below.
# Replace the '''<span style="color:blue">blue circled</span>''' normal pumps with volume pumps as well, but notice; there are risks involved and all of them are covered at the pros and cons -section below.
# Set all red circled filters to maximum pressure (4500 kPa) so waste gas will actually be moved.
# Set all '''<span style="color:red">red circled</span>''' filters to maximum pressure (4500 kPa) so waste gas will actually be moved.
# Go through the N2, O2 and Air -computers beside the south wall and set their output to maximum (5066.25 kPa).
# Go through the N2, O2 and Air -computers beside the south wall and set their output to maximum (5066.25 kPa).


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* '''Pros and cons of this setup:
* '''Pros and cons of this setup:


::'''+''' In case of a toxin leak, waste gas will be sucked out quickly (if the area's air alarms are set to filter out all the toxins, by default they are NOT). <br>
::'''+ Quick toxin filtering.''' In case of a toxin leak, waste gas will be sucked out quickly (if the area's air alarms are set to filter out all the toxins, that is, by default they are NOT filtering anything).
::'''+''' In case of a breach, air will be poured out with a nice pace, helping you re-pressurize the room quicker after the breach is fixed. <br>
::'''+''' With this setup, the grifflords cannot fuck up pipes in the maintenance tunnels. In a room with the default 101.3 kPa atmospheric pressure, pipes with more than 303.9 kPa pressure cannot be unwrenched. <br>
::'''-'''  In case of a breach, until the hole is fixed, you'll probably spend a small while fighting against the huge air current ("space wind") if you don't switch the vents off. <br>
::'''-''' If you'd suddenly get a need to modify any pipes (quite unlikely), you'd need to lower the pressure to under 303.9 kPa, which could take a long time. <br>
::'''-''' The station is more vulnerable for sabotage through [[Air alarm|air alarms]]. Someone can quite easily hack an air alarm somewhere and set the vents to push out air at maximum pressure, resulting in a shitty situation, because sucking out excessive air is slow.
 
==After All is Done==
There is a short list of things which fall under your stead:
* First and by far most important: make sure pipes don't get broken and if they do, fix them.
* Go around swiping your ID on air alarms, setting Plasma and N2O to filter, and then re-swiping to lock it. You can ask the AI to do this as well, and probably should.
* Fill all the air pumps with air using a volume pump (more air pumps can be found from the locker room).
* Make extreme extended oxygen tanks for internals use (instructions below).
* Least importantly, maintain the disposals system. You can generate pipes, but it needs welding and is generally a pain in the ass. You can also make fun slides, though.


::'''+ Quick repressurization.''' In case of a breach, air will be poured out with a nice pace, helping you re-pressurize the room quicker after the breach is fixed.


===Using an Air Alarm===
::'''+ No pipe sabotaging.''' With this setup, the grifflords cannot fuck up pipes in the maintenance tunnels. In a room with the default 101.3 kPa atmospheric pressure, pipes with more than 303.9 kPa pressure cannot be unwrenched.
Air alarms are the central tool of an Atmos Tech outside setting Atmospherics up. To use an air alarm, simply swipe your ID across it. An Air Alarm has multiple options: "Activate Atmospheric Alarm", "Scrubbers Control", "Vents Control", "Set Environmentals Mode", "Sensor Settings", "Activate Panic Syphon".


'''Activate Atmospheric Alarm''': Self Explanatory. The Alarm will show on the Atmos Alert Computers and alerts the AI.
::'''- Air Alarm sabotages.''' The station is more vulnerable for sabotage through [[Air alarm|air alarms]]. Someone can quite easily hack an air alarm somewhere and set the vents to push out air at maximum pressure, resulting in overpressurization.


'''Scrubbers Control''': Controls the scrubbers in the area. Select specific gases to be filtered. Choose between two settings for the scrubbers, scrubbing and syphoning.
::'''- Space wind.''' In case of a breach, until the hole is fixed, you'll probably spend a small while fighting against the huge air current, a.k.a. "space wind", if you don't switch the vents off during the repair. This is mostly just annoying.
* Scrubbing will slowly drain any gases set to filter in the air of the tile they are on, and transfer it to their pipe. Really, really slow with N2O.
* Syphoning will do the same, except indiscriminately and drain all gases on their tile.


'''Vents Control''': you control vents through the air alarm. There are the following settings:
::'''- Very slow distro pipe manipulating.''' If you'd suddenly get a need to modify any of the distro pipes, you'd need to lower the pressure to under 303.9 kPa, which could take a long time.
* '''External on''', Internal off: will drain/add air from the tile the vent is on to make it reach the selected pressure. All air being moved goes into/comes out of the pipe the vent is attached to. Set to 0 to drain air, or pressurise to specific levels.
*'''Both on''': completely useless. Don't bother.
* External off, '''Internal on''': Drains/adds air to the tile to get the pipe attached to the selected pressure level. Setting a vent to internal and the desired pressure to 0 causes ALL gas which enters the pipe to be shunted out onto the tile.


'''Set Environmentals Mode''': you can select a preset mode for the scrubbers and vents in the area:
A little safer, but not as efficient, way of setting up the system is leaving the '''<span style="color:blue">blue circled</span>''' normal pumps completely alone or maybe raising the pressure to 315 kPa. This pressure is enough for quick pipe manipulating and for a sufficient air distribution.
* '''Filtering''': Default mode, scrubbers are set to "Filter", vents are set to keep the area at normal pressure (101kPa).
* '''Draught''': scrubbers are set to "Syphon" and vents are On.
* '''Panic''': scrubbers are set to "Panic Syphon" and vents are Off.
* '''Replace air''': scrubbers are set to "Syphon" and vents are Off. Nearly identical to "Panic".
* '''Off''': Both scrubbers and vents are Off.


'''Sensor Settings''': Let's you change the minima and maxima for pressure, temperature and specific gases to automatically activate the alarm.
Done correctly, Atmosia should be pumping good air just faster than it's lost, and draining bad air away as fast as the traitors can set it on fire or alternatively draining good air away as fast as a malf AI can syphon it. You can go kick back in the bar like a boss, and wait for the inevitable minor station damage and cries of "Call the shuttle!" on the radio from folks who don't even know it ain't a big deal.


'''Activate Panic Syphons''': They turn all vents off and set all scrubbers to syphon. You *can* do better than that, but most of the methods involve setting vents to suck, and if you need a panic syphon, then sucking contaminated air into Distro kinda sucks. <!-- If you truly do have a better way, Scott, I suggest you explain it. -->


==After the Work is Done==
There is a short list of things which fall under your stead:
* First and by far most important: make sure pipes don't get broken and if they do, fix them.
* Go around swiping your ID on [[Air Alarm]]s, setting Plasma and N2O to filter, and then re-swiping to lock it. You can ask the AI to do this as well, and probably should.
* Fill all the air pumps with air using a volume pump (more air pumps can be found from the locker room).
* Make extreme extended oxygen tanks for internals use (instructions below).
# Go to the red lockers, get a hard hat, gas mask and everything else that might be of use. Remember that you need both a fire suit and a hard hat to be resistant to weak fires. One will be useless without the other.
# Go grab the Fire Axe from the wall mount and hide it somewhere the [[Clown|chucklefucks]] won't get it and go killing. DON'T take it with you and go walking through the hallways trying to look like a badass, you'll be the prime target of any antagonist/griffon who needs an efficient weapon.
* Least importantly, maintain the disposals system. You can generate pipes, but it needs welding and is generally a pain in the ass. You can also make fun slides, though.




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* If you need to empty an internal tank to make space for better, colder air, you can use an air pump. Set it to 'pump in' and 'turn on' then 'off' with the tank inside it, allowing you to refill the tank more effectively.
* If you need to empty an internal tank to make space for better, colder air, you can use an air pump. Set it to 'pump in' and 'turn on' then 'off' with the tank inside it, allowing you to refill the tank more effectively.


==Fun Projects==
 
* The Atmospherics system is far from optimal, and I'm talking about just the pipe configuration! Break out that wrench and start experimenting (just make sure you know what's what)!
===Your Very Own Customized Mix===
To create a custom mix of gas, turn on the output of the supply control computers, open the manual valves, and turn the output of the pump to what you wish it to be. The gas will travel through the orange pipes into the mixing chamber. The gas mix is pumped into the mixing chamber via a pump north of the orange loop.
 
The mix obtained can then be pumped into the distribution and filtering loop or used to fill canisters. Remember to turn off the pump between the yellow and red pipe network or your custom mix will just go into the red waste loop.
 
 
===Fun Projects===
* The Atmospherics system is far from optimal, and we're talking about just the pipe configuration! Break out that wrench and start experimenting (just make sure you know what's what)!
* Extremely high temperature gases (like those from a panic siphoned fire) can really clog the waste loop. Could you do something to correct that?
* Extremely high temperature gases (like those from a panic siphoned fire) can really clog the waste loop. Could you do something to correct that?
* No one uses the ports outside of the 'refilling' station, but that doesn't mean that functionality can't be added onto them!
* No one uses the ports outside of the 'refilling' station, but that doesn't mean that functionality can't be added onto them!
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* The brigs distribution system is set up to be potentially independent of the rest of the stations distribution loop, maybe other places can be set up like this as well?
* The brigs distribution system is set up to be potentially independent of the rest of the stations distribution loop, maybe other places can be set up like this as well?
* The mining station doesn't have air recycling. Very long rounds might make this a problem for any miners working there.
* The mining station doesn't have air recycling. Very long rounds might make this a problem for any miners working there.
==The Less Well Known Hazards of Gases==
* Any gas at pressure over 1000 kPa will cause you to start suffocating as in a vacuum. You can just use internals, though.
* N2O is invisible at low pressures. If you start giggling, put on your internals to avoid passing out.
* Any gas can displace O2, and less than ''16'' (also useful for optimizing internals) kPa of oxygen starts the Oxyloss. CO2 can be removed with the scrubbers, but to get rid of N2 simply apply some way of removing gas from the air and adding O2. My personal favorite is 2 air pumps, 3 connectors and a Air Filter and a canister: 1 pump draws in, goes through the connection and filters N2 into the canister, and the rest to the other pump, which expels it. Can also be used for N2O which is only sluggishly scrubbed otherwise.
* Pressure's above 750 kPa do 10 DPS + 5 DPS for every extra 375 kPa above that mark, rounded off. Space suits completely block it all, but there is no other defence.




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==The Less Well Known Hazards of Gases==
==Being a Traitorous Scum==
* Any gas at pressure over 1000 kPa will cause you to start suffocating as in a vacuum. You can just use internals, though.
Or: How to get the AI lynched; How to call the shuttle as Atmos Tech, step-by-step:
* N2O is invisible at low pressures. If you start giggling, put on your internals to avoid passing out.
# Open valves connected to harmful gas you want to add to the station.
* Any gas can displace O2, and less than ''16'' (also useful for optimizing internals) kPa of oxygen starts the Oxyloss. CO2 can be removed with the scrubbers, but to get rid of N2 simply apply some way of removing gas from the air and adding O2. My personal favorite is 2 air pumps, 3 connectors and a Air Filter and a canister: 1 pump draws in, goes through the connection and filters N2 into the canister, and the rest to the other pump, which expels it. Can also be used for N2O which is only sluggishly scrubbed otherwise.
# Set pumps to the distribution loop to maximum pressure output (4500 kPa).
* Pressure's above 750 kPa do 10 DPS + 5 DPS for every extra 375 kPa above that mark, rounded off. Space suits completely block it all, but there is no other defence.
# Set filters to not filter harmful gasses you want to add to the station OR set the waste-in pump to 0 kPa (but leave it on to confuse the crew).
# Open valve from custom mix chamber.
# Turn on pump leading to distribution loop.
# Wait for vents to slowly kick out your deathgas mix as regular atmos drains out through the inevitable hull breaches (alternatively turn off pressure checks on air alarms' vents to speed things up).
# If you need to kill someone for your objective, and you want to be more proactive, the [[Fire Axe]] mounted in the wall is surprisingly effective. Just don't leave it lying around, because it's one of only two on the station.
 
To hurry this process up, you can set the air vents at local control panels to maximum output pressure. Not doing so gives the AI and Atmos Techs more time to notice what you've done and shut it off before it takes effect.
 
A faster process for achieving the same result is to do the following:
# Disconnect, change the direction of, and reconnect the pump that feeds from the air mix to the mix tank in the north-eastern room of atmosia.
# Open the valves for your deathgas mixture of choice.
# Power on and max the pressure on every pump in the mix pipes (yellow pipes) from the storage tanks out to the station output (blue pipes).
 
This simply means that instead of the air mix being put into the mix tank as it normally does, the air mix (which may or may not contain death gasses) is fed into the station output.
 
Crafty atmos traitors will want to cut cameras, replace pumps with pipes, use tricky pipe configurations to avoid the AI interfering or the detective trying to fix it and make a hole in the station's oxygen and air tanks, venting the entire round's supply of oxygen into space.


An extremely fast method that involves a clever use of the waste system is the following:
# Reconfigure the piping to connect the waste system directly into the pure pipes.
# Find a place with a waste pipe next to a distro pipe, then configure them so that they can united later.
# Open the valves for your deathgas mixture of choice, the waste piping should now begin to fill with your gases.
# Set as many air alarms as you can to have every vent at Internal 0.
# When ready, go back to your distro/waste pipe spot and unite them.
# Listen to screams over the radio.


==Being a Traitorous Scum==
Other antagonistic things to do:
If you are just trying to flood a gas like plasma, you can essentially do the basic set up with plasma instead of a N2/O2 mix.
* You can hack an air alarm to use it as a non-Atmos Tech.
* You can hack an air alarm to use it as a non-Atmostech.
* You can C4 the digital valves to let you remove them and shut down AI control, or save a C4 and disable the cameras if you know there's no Cyborgs on the station.
* You can C4 the digital valves to let you remove them and shut down AI control, or save a C4 and disable the cameras if you know there's no Cyborgs on the station.
* Using a gas filter turned on to pour large, ever increasing, amounts of gas onto a single connector port has no visible effects, but if you wrench a canister onto it then the canister will almost immediate fill up with the massive pressure buildup, letting you get super-high pressure plasma/CO2/etc canisters to hit area's with.
* Using a gas filter turned on to pour large, ever increasing, amounts of gas onto a single connector port has no visible effects, but if you wrench a canister onto it then the canister will almost immediate fill up with the massive pressure buildup, letting you get super-high pressure plasma/CO2/etc canisters to hit area's with.


[[Category:Guides]]
[[Category:Guides]]
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