Disappearing Chlorine from Disinfecting Room

[_alphaBeta_]

I'm puzzled by this. I have a slime room filled with chlorine and over time all of the chlorine has disappeared. I have confirmed it's nowhere else in any areas of the base that have ever been accessible. I thought I had read that chlorine can dissipate when it's killing germs, but all the slime in these containers has long had its germs completely killed off. What am I missing?

I have another chlorine room that houses a liquid reservoir that hasn't lost anything whatsoever. I can easily tell since the chlorine left in the pipe leading into this room is still completely full. I should note that this is a closed room where the door is never opened. This is not the case with the room I'm having trouble with.

So chlorine doesn't seem to be consumed by fighting germs in a liquid container. Is it consumed by killing germs on materials inside a storage bin or on the floor? If so, this would appear to be a bug that germ-free slime is still consuming chlorine.

If chlorine is never supposed to be consumed, then I'm left thinking there's something about the design of this room that is deleting gas from the game. This slime is still off gasing polluted oxygen in this room. I have a gas pump circulating the air in the room to a filter where the chlorine is put back into the room and everything is expelled out of the room. A now empty chlorine supply gas pipe would supplement via a bridge if necessary (this line has now drained my entire chlorine supply from the reservoir).

is there anything else in the game that consumes or converts chlorine to something else? There's no critters in this room. There was beach stone in the containers with the slime for a time.

[qqqqqqqqqqqq]

Is the correct gas selected in the filter?

[SamLogan]

Oxygen / Polluted oxygen compressed the chlore as you didn't enough put pression in the room, so the slime is still emiting gas.

[beowulf2010]

A few potential issues. 

1) Are dupes going in without exosuits? If so, the little bits of CO2 can cause "drops" in pressure to allow for off gassing. 

2) The deodorizer makes occasional blips of vacuum that can get filled with anything that offgasses. 

3) Do you have at least 1,800g of chrloine (and only chlorine) in the room? If not, do so. Multiple gasses will allow offgassing which can screw up chlorine degermification. 

[_alphaBeta_]

Yes, the filter was correct and the system was working as I intended, but I still could be hitting a part of the simulation that doesn't agree with my intent. If it detected something other than chlorine from either sensor, the gas pumps would turn on and recirculate. This re-circulation would put the extracted chlorine back into the room and filter out anything else outside the room. I also had a bridge there for any new chlorine to be added if necessary so the vent into the room always had chlorine to use. No exosuits at this point, so I thought I was being clever by having a filtering system setup to handle any other gases coming in. I've used similar systems elsewhere and managed to keep the room balanced with a gas on top (oxygen in this case) and chlorine on the bottom, most time with no door if necessary. In the lower chamber, the top air pump would handle any entering oxygen or escaping chlorine and the bottom pump would grab the pesky carbon dioxide. It all worked, but something about this is deleting the chlorine over time.

From some more reading on this, I'm thinking it's the off gassing. With only the regular gas vent at the time, and with dupes coming and going, there were times where the storage bins could off gas while the chlorine vent was still overpressured, especially during re-circulation. As you guys said, it only takes one cell of low pressure carbon dioxide or polluted oxygen to trigger it and then the problem keeps repeating. Maintaining each air cell between 1.8kg and 2.0kg is just too small a window. With the polluted oxygen trying to enter the room from the off gassing, it must somehow be deleting the chlorine in a corner case of game logic. Perhaps any kind of oxygen wins when there's a logic conflict. Or something.

I'm thinking a potential solution would be more regular vents, spaced out in the room in an effort ensure >1.8kg of pressure everywhere. Another solution in the later game now is to use an automation-controlled high pressure vent to make sure the room is overwhelmed by the chlorine pressure and stop the off gassing completely. I could easily have well over the 1.8kg this way rather than still threading the needle with 200g of pressure. What do you think?

On the bright side, I created an excellent chlorine deletion chamber.

[beowulf2010]

Ok. So, the best "low tech" solution is to make a liquid lock, pull all gas out of the room, and once it's a vacuum, refill with chlorine and o ly chlorine. Using a normal vent and a little patience will put you at 2,000g of pressure eliminating all off gassing and not causing popped eardrums. Try to avoid allowing flatulent dupes into this room as they'll output natural gas into what ideally is a chlorine only room. 

If the room is 100% gasses that can't be breathed (not O2 or polluted O2), dupes won't breath out CO2. 

[Gurgel]

1 hour ago, beowulf2010 said:

Ok. So, the best "low tech" solution is to make a liquid lock, pull all gas out of the room, and once it's a vacuum, refill with chlorine and o ly chlorine.

That is the approach I usually use. Works well. If you put nothing in there that off-gasses, you can use the minimal amount of Chlorine you can get in there. 

1 hour ago, beowulf2010 said:

If the room is 100% gasses that can't be breathed (not O2 or polluted O2), dupes won't breath out CO2. 

Matches my observations.