Do I need yearly DC Chamber visit?

[pescador775]

Hey, Vikingo, good call.

 

[lamont]

I have heard of this and agree somewhat with it. The thinking behind it is the formation of micro bubbles, which can in time contiune to build up and then cause a problem later as the bubbles grow in size after continues diving. If I am not mistaken this is the cause of "Silent bends", and with this train of thought is that, there is always some residual nitogen that does not totaly off gass. I would suggest anyone to do a chamber dive after lots of hard diving. Rather safe than sorry, and no one can tell if you have mirco bubble build up only larger bubbles can be picked up by a Dopler scan or x-ray

Uhm, the smaller the bubbles, the faster they offgas. The entire point of deep stops is to keep bubbles small so that the surface tension on them is large and the differential pressure between the bubble and ambient is large and they offgas more efficiently. Someone who once read something about "microbubbles" and didn't understand it has invented a large pile of voodoo here. There is no residual nitrogen that never offgasses.

And a chamber ride is just another dive as well. You'll stir up another whole pile of microbubbles "at depth" again and have to deco them out on the ride... The chamber isn't magic...

 

[DocVikingo]

Hi Lamont,

Thanks for injecting a little science and common sense regarding the notion of microbubbles that somehow continue to amass over the year and require an annual D&C [diffusion & crushing ; ) ]

Regards,

DocVikingo

 

[Damselfish]

People in my dive club are urging me to decompress in the chamber yearly to prevent "problems" after years of diving.
At first I laugh it off but more are telling me the same.
I do not find such suggestion during my rescue diver course or in any books.
Is it just a rumor?

did you recently join this club? Maybe it is a joke, like a club "initiation."

 

[fairybasslet]

did you recently join this club? Maybe it is a joke, like a club "initiation."

This was mentioned by Cool Tech previously, he called it Snipe hunting, which being a Yankee, I never heard of before. But some OCD mod cut that off and put it in humor thread, and I was going nuts looking for it here on this thread. I do have a bad memory, but I didn't think it was so bad that I couldn't rememember where I had learned a brand new practical joke. Now, I fully expect this post to be put in whine and cheeze.

 

[Damselfish]

yes, for all we know at this point snipe hunting might be completely relevant to this thread!

 

[BHB ScubaTroll]

yes, for all we know at this point snipe hunting might be completely relevant to this thread!

It was when I wrote it... El split the thread, so I'm sure there is probably some logical explanation

 

[Jim Lapenta]

Mods don't need logical explanations.

 

[DandyDon]

Hi icliao,

The notion of an annual chamber ride for the sole purpose of DCI prophylaxis is without any scientific basis.

It is utter nonsense, poppycock & bunk.

Regards,

DocVikingo

When he posts, I consider the question answered.

I doubt the snipe hunt idea, altho it may come into some play. Some of the experienced members probly believe it, so the urban legend caught on locally.

Suggested answer for the OP: "No Way Jose!

 

[almitywife]

Sounds like a new urban myth to me. Someone misunderstood something they heard, repeated it, and off it goes.

shhhhh - isnt the chamber thing what the commerical divers do to father sons as most seem to have daughters only