Bonaire accident issues Close Call

[Lorenzoid]

Did the class teach you scenarios that could cause a flood?

What happens if seals don't seal or parts are installed backwards? Seems easy to mess up a reg and get it to freeflow. What would it take to get it to flood?

I am a complete neophyte to reg designs and servicing. Someone else here is surely more knowledgeable. It is not at all apparent to me how a first stage could fail in a way that admits water into the IP chamber, but I suppose anything is possible. As for the second stage, the exhaust valve seems like the most likely culprit, as I believe was mentioned upthread.

 

[EricTheDood]

Found this old thread on SB: Regulator Flooding

The problem might be rare but apparently it does happen.

 

[Lorenzoid]

Found this old thread on SB: Regulator Flooding

The problem might be rare but apparently it does happen.

I see the same speculations in that thread about the cause as in this thread. Nothing new. Nothing about how a first stage could cause it. Mostly speculation that it was the second stage exhaust valve, diaphragm, cracked case, etc.

 

[redacted]

Most parts of a regulator are designed to contain and control gas under pressure. But some parts have the primary job of keeping water out. The symptoms described including continued fluttering sound on inhale make me suspect a torn or dislodged diaphragm or exhaust valve. Dislodged often means not correctly assembled.

I am getting the impression that the OP may have lost interest in his thread. Oh well!!!

 

[beaverdivers]

So let me make sure I understand: This pre-dive test would involve inhaling through the mouthpiece before turning the tank valve on, and making sure no air is leaking through a damaged exhaust valve, diaphragm, or the case? (Then, turn the tank valve on and proceed with the more typical pre-dive check of taking 2-3 breaths through each second stage.) Is that what we're talking about here?

Correct. If you get air while doing the neg. pressure/vacuum test, then you will get water while diving. The neg. pressure test is vital while diving a closed circuit system ( rebreather ) and IMO a good ideal while using open circuit ( SCUBA ).

Also, the OP & his buddy should both consider an independent redundant system ( pony/stage bottle ). If you have a problem, it is the best solution.

As far as a new reg., yes it is over due. I never was a fan of the reg. Sea Quest is a B.C. company, not know for their regs.

 

[Thook]

Still here guys... further inspection reveals second stage degredation/crack, in the diaphragm as expected. I appreciate all your input. The wife has been somewhat traumatized by this so soon we will do a few pool sessions to see if she will be comfortable enough to contiune diving.....this is just something she will have to work through. I am hopeful for a positive outcome.

 

[rjack321]

We were 10 minutes into the dive.

What were her DCS symptoms?
10mins at 60ft on air even with a rapid ascent is not really DCS territory. Embolism yes, but perhaps that's what you meant.

 

[KevinNM]

What were her DCS symptoms?
10mins at 60ft on air even with a rapid ascent is not really DCS territory. Embolism yes, but perhaps that's what you meant.

See post 53

 

[gfaith]

@Thook Thanks for the follow-up. I can understand your wife's hesitation to jump right back in the water, and you wanting to get new regulators. You are going about this exactly right.. GO SLOW.. support her, and don't push her to quickly. I predict you will both be better buddies after this incident.

 

[Thook]

No doubt my friend..... NO doubt....