Rebreather World - View Single Post - To BOV or not BOV

diverreb · 25th November 2007, 16:15

Quote: (Originally Posted by Peter Piemonte)

Agree with Drmike, Dave Sutton and others who have promoted the use of a BOV. I bailed out to OC once on a non BOV equipped rig, due to a caustic cocktail. twice on a BOV equipped rig due to mild CO2 hits.

As Decodiver and Scubadadmiami point out, you don't have much choice with a cocktail, but in all other scenarios, the BOV is a very easy way to get off the loop and provides a smooth transition to OC bailout. Even without experiencing a full blown hypercapnia event, it is very difficult to control yourself sufficiently to make the exchange. Perhaps if I were more diligent in practicing that skill, it would be different. The use of heavy gloves and cold water complicates things furthur...

I prefer the added redundancy and ease of transition of the BOV, and would be reluctant to dive without one.

With the CEJN quick connect, I can plug in any of my bailout gas to the BOV or use the second stages on my bailouts.

Regards, Peter

Reading about others experience with Hypercapnia I would think it's a good idea to be connected to the BOV through offboard gas either directly or through a switch block. If I were fighting for gas & was to the point of not being able to get off my BOV to the bailout reg, as some have described the condition, I surely wouldn't want to have to pop a quick connect, and hook it up to another hose, especially in cold water with heavy gloves on and in somewhat of a state of mental stress.

A lot of this is dependent on your depth & how much Dil you have to feed the BOV. I really have no idea how long it takes to get Hypercapnia under control, that is your breathing rate back to a normal level once the switch to OC is made.

For all other instances, if you have time to make the QC changeover, you probably have time to switch to a Bailout reg, if you so choose.

I went through this exercise when I was thinking about changing all my fittings on the rig, drysuit, and BC to QC fittings so they would all be the same and interchangeable. Turned out to be a very expensive proposition to avoid an extra hose on a Bailout bottle with a fitting that matches the QC on my BOV.

Richie

25th November 2007, 16:15	#23 (permalink)
diverreb DE/MD/NJ Wreck Diver Current Rebreather/s: Optima Other Rebreather/s: Join Date: Mar 2007 Location: Dover, DE Posts: 596	Re: To BOV or not BOV - Split From NACD Cave Summit Quote: (Originally Posted by Peter Piemonte) Agree with Drmike, Dave Sutton and others who have promoted the use of a BOV. I bailed out to OC once on a non BOV equipped rig, due to a caustic cocktail. twice on a BOV equipped rig due to mild CO2 hits. As Decodiver and Scubadadmiami point out, you don't have much choice with a cocktail, but in all other scenarios, the BOV is a very easy way to get off the loop and provides a smooth transition to OC bailout. Even without experiencing a full blown hypercapnia event, it is very difficult to control yourself sufficiently to make the exchange. Perhaps if I were more diligent in practicing that skill, it would be different. The use of heavy gloves and cold water complicates things furthur... I prefer the added redundancy and ease of transition of the BOV, and would be reluctant to dive without one. With the CEJN quick connect, I can plug in any of my bailout gas to the BOV or use the second stages on my bailouts. Regards, Peter Reading about others experience with Hypercapnia I would think it's a good idea to be connected to the BOV through offboard gas either directly or through a switch block. If I were fighting for gas & was to the point of not being able to get off my BOV to the bailout reg, as some have described the condition, I surely wouldn't want to have to pop a quick connect, and hook it up to another hose, especially in cold water with heavy gloves on and in somewhat of a state of mental stress. A lot of this is dependent on your depth & how much Dil you have to feed the BOV. I really have no idea how long it takes to get Hypercapnia under control, that is your breathing rate back to a normal level once the switch to OC is made. For all other instances, if you have time to make the QC changeover, you probably have time to switch to a Bailout reg, if you so choose. I went through this exercise when I was thinking about changing all my fittings on the rig, drysuit, and BC to QC fittings so they would all be the same and interchangeable. Turned out to be a very expensive proposition to avoid an extra hose on a Bailout bottle with a fitting that matches the QC on my BOV. Richie
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