My hypoxic incident

[Superlyte27]

Glad you’re okay man. Thanks for sharing.

 

[JonG1]

I'm guessing once he had recovered enough he would have tested the unit, which was how he discovered the partially blocked orifice

 

[uwxplorer]

I'm guessing once he had recovered enough he would have tested the unit, which was how he discovered the partially blocked orifice

he said:

My leaky valve was partially or fully plugged ( I found out after when I took it apart) causing the O2 flow to slow.

 

[JonG1]

he said:

Yeah I know, I'm just interested in the actual flow rate, generally cmf are set to circa 0.7 lpm which is roughly metabolic rate and is checked semi regularly by means of a Dwyer Gauge or similar, I'm just wondering if the actual flow rate with the blockage was measured.

 

[oceance]

As others said: Thanks for sharing!
This is a valuable story to demonstrate that while diving a rebreather one must avoid complacency.

Do you have an idea what clogged the leaky valve?

 

[girlwithbigtanks]

Thank you for sharing @nadwidny. I appreciate your candor. It’s not easy to be vulnerable. xo RB.

 

[BlueTrin]

Thank you sharing. Sorry but I am not a native speaker, I don’t understand what happened when you say that the leaky O2 valve was plugged: does that mean that something was blocking from inside the valve?

 

[broncobowsher]

Thanks for sharing. That was a lot worse than my near miss. Got down to PPO2 0.10 and caught it. It can drop quick on the (or near) the surface.

 

[Marie13]

Thank you sharing. Sorry but I am not a native speaker, I don’t understand what happened when you say that the leaky O2 valve was plugged: does that mean that something was blocking from inside the valve?

Yes, the leaky valve can get clogged.

 

[rjack321]

Thank you sharing. Sorry but I am not a native speaker, I don’t understand what happened when you say that the leaky O2 valve was plugged: does that mean that something was blocking from inside the valve?

Its a tiny hole. 0.0035" or about 0.89mm in a brass orifice. A drop of seawater in there and some green corrosion over time and the flow rate will plummet