DCS and the Sci-Fi TV Show "Silo"

[pauldw]

The dive scenario even for someone not an expert on DCS and deco diving is a straight up death sentence.

Except that she didn't die, or even get bent, so you're wrong.

 

[lowwall]

Except that she didn't die, or even get bent, so you're wrong.

It wasn't a documentary.

 

[Dan G]

Everyone (save @-JD- ) is forgetting that if the tower is below sea level, the negative altitude must be considered. If she's going to 150' the adjusted depth would be something like 136' but I'll leave it to someone else to do that math.

I have asked this question a few times, including in my original post.

It's actually the ambient pressure at the water's surface that's important. It's still not clear whether the water is open to the outside world or not. If it is, then the silo would have to be pressurized to avoid the water from rising. The equivalent negative altitude in that case would be much, much more than the distance to the outside surface.

To your point, however, in either case NDL would indeed be increased over that of a dive at 1.0 atm surface pressure.

I believe the water is coming in from the outside, however, it is rising because the pump that keeps the water out of the silo was shut off about 30 years prior. The diver turned the pump back on.

Except that she didn't die, or even get bent, so you're wrong.

I got the joke. We don't know if she was bent since the episode ended almost immediately after she surfaced. (forgetting the fact that this dive would likely result in a bent diver unable to even get out of the water)

 

[halocline]

I’ve been thinking about watching the new season so maybe now I will! Maybe someone can remind me, the main character (Rebecca Ferguson?) went outside at the end of the 1st season, right? No spoilers, please, but apparently she must end up coming back in.

 

[happyharris]

How long would it take to get from 90m/300ft if travelling at 10m/30ft per minute?

Ten minutes without stopping. Can anyone here hold their breath for 10 minutes?

I think yes, actually.

Firstly, from my understanding, you would not actually need to hold your breath. You could gently breathe out and the expansion of air in the lungs would allow (require) you to do this all the way up. I don't know if gently breathing out helps to suppress the desire to breathe in.

Secondly, the record for oxygen-assisted breath hold is 24 minutes, and non-oxygen assisted is 11 minutes. From previous discussion, it sounds like she may have been actually at risk of oxygen toxicity losing her supply, so maybe we can call this oxygen assisted.

As we all know, the hero of a drama is already pre-trained in everything from flying a helicopter to driving an 18-wheeler to linux command line hacks, so no reason to expect she wasn't a trained apnea diver

(Note: scuba newbie here; if all this is wrong I will not be surprised or offended!)

 

[Dan G]

I’ve been thinking about watching the new season so maybe now I will! Maybe someone can remind me, the main character (Rebecca Ferguson?) went outside at the end of the 1st season, right? No spoilers, please, but apparently she must end up coming back in.

Spoiler for anyone who might want to read the books or watch season 1:
She went outside and and saw that there were dozens of other silos. Anything else I tell you will be a spoiler.

 

[pauldw]

Next episode, and she has the bends after all, and she's going back down to recompress, breathing off of an air hose while waiting to be OK. I learn so much on this show!

 

[Dan G]

Next episode, and she has the bends after all, and she's going back down to recompress, breathing off of an air hose while waiting to be OK. I learn so much on this show!

Yea, who knew IWR was so quick and easy?

 

[johndiver999]

Yea, who knew IWR was so quick and easy?

To be honest, that was one of the most realistic scenes of the whole show. Just hang out until you feel like you are not going to die anymore- as Solo said..

 

[Dan G]

To be honest, that was one of the most realistic scenes of the whole show. Just hang out until you feel like you are not going to die anymore- as Solo said..

Sure, but then she did another CESA at the end when the hose stopped pumping air.