What is a rebreather>>>>

[Doppler]

Too little oxygen? Hypoxia.
It's a simple idea, with great and useful application, but the technology, while better and far more advanced than it was, is still not 100% reliable.

Well nothing is 100 percent reliable including OC scuba. I would suggest you ask questions of a CCR diver and listen. You might be interested to read the results of a recent survey and learn what others think.

As an aside, the technology pre-dates OC scuba and modern units are reliable... more complex than OC but reliable. The most common failure by far in CCR accidents seems to be operator error starting with failing to use a check list.

 

[technicalbeast]

what is ccr diver

 

[Doppler]

so it means that rebreather are non trusted equipments

---------- Post Merged at 02:52 PM ---------- Previous Post was at 02:52 PM ----------

it is battery operated or what>>??

No, most emphatically not. The most common failure point on a rebreather is the person setting it up and operating it. Common op. errors include (in no particular order):

Failure to use a check list
Failure to heed warnings such as battery voltage warnings, cell warnings, et al
Pushing the time/volume limits of the scrubber
Failing to follow best practice procedures if something goes pear-shaped at depth
Insufficient bailout gas
Diving beyond certification and experience
Poor maintenance


Simple fact is -- and in reference to an earlier question you made, at almost any depth... certainly at technical depths... one has far more options on CCR than on OC should something go awry.

---------- Post Merged at 07:33 AM ---------- Previous Post was at 07:31 AM ----------

what is ccr diver

Closed-Circuit Rebreather Diver

OC = Open Circuit... regular scuba

 

[technicalbeast]

thanks buddy for giving such an information....

---------- Post Merged at 04:49 PM ---------- Previous Post was at 04:36 PM ----------

what about thier prices.....

 

[Cave Diver]

hello every one,,,,, i wana know what rebreather is and how it works.....

http://www.scubaboard.com/forums/rebreather-diving/424946-clearing-rebreather.html

http://www.scubaboard.com/forums/rebreather-diving/346765-what-rebreather.html

http://www.scubaboard.com/forums/re...6-probably-stupid-question-non-rb-person.html

http://www.scubaboard.com/forums/advanced-scuba-discussions/308080-ccr-oc-buddies.html

 

[Doppler]

Simple,
You die.

More correctly, the diver gets a warning -- specific to the unit being used, this warning may be a visual, audible, and tactile -- and then she has several courses of action open to her depending on the type of malfunction. For example, a diluent flush might be the best option following a warning that oxygen partial pressure is high (given that the correct diluent for the dive's depth is being used).

 

[danvolker]

hello every one,,,,, i wana know what rebreather is and how it works.....

You could say a rebreather is a magical device that divers with high breathing rates desire... this being the Magic Carpet Ride side of rebreathers.
Unfortunately, unlike scuba, the rebreathers have a great many ways they can kill a diver, so you might say that is the "cost" of all this "magic".

Personally, I would use a rebreather only for very "mission specific" purposes, where scuba tanks just won't work....This is such a tiny percentage of all dives you could do, I see it as unlikely for most divers. Four miles back into a deep cave....a dive in open ocean with currents to an occulina reef at 450 feet deep for a 30 minute video session, with 4 mph drift current so no tanks can be used beyond what the diver carries.......there are a few scenarios I can imagine myself wanting the magic carpet ride, but not many. And these would be extremely dangerous, by recreational or technical use standards.

 

[Doppler]

you could say a rebreather is a magical device that divers with high breathing rates desire... This being the magic carpet ride side of rebreathers...

lol!!

 

[TSandM]

Costs of rebreathers are high -- most units I've seen run in the $5000 to $10,000 range, and their purchase is linked to required training, which is also not inexpensive. The basic class on a Meg, taught by the man who makes them, is $1500, IIRC.

Rebreathers also aren't inexpensive to run. After my very interesting Intro day with Megalodon, I sat down, and I think we came up with about $15 a dive for Nitrox dives on the machine. That is certainly not much cheaper than buying Nitrox fills, at least around here.

 

[Doppler]

thanks buddy for giving such an information....

---------- Post Merged at 04:49 PM ---------- Previous Post was at 04:36 PM ----------

what about thier prices.....

no worries... any time.

As Lynne mentions in her posting above, rebreathers are not cheap and nor is the instruction... a seven-day level one class typically costs $1500.

The price range of various units somewhat reflects the level of design, R&D and testing that has gone into the process of bringing a unit to market.

I would add something to Lynne's assessment of the running costs.

During a week of deep wreck diving recently (maxing out at 50 metres), my cost of scrubber materials was around $40 and my cost for trimix diluent and oxygen was around $35-$40. For OC divers who made the same dives, I believe the average gas costs were $600. My cylinders were also easier to fill!