Waterford Garda dead - County Wexford, Ireland

[Celt]

Honestly a tox takes longer that losing all the gas out of a twinset. CCR’s main win is time.

Takes longer for who, some people have very low oxygen tolerance, you have to test equipment for the weakest user

 

[Celt]

toxing doesn't happen the second you go above 1.6

Where did that figure come from

 

[helodriver87]

1.6? The maximum generally accepted safe PO2 limit?

 

[Celt]

1.6? The maximum generally accepted safe PO2 limit?

The autopsy said oxygen spike we’re not talking about PO2 of 1.6, and we’re not talking about a novice. He was highly trained and experienced diver. A professional and part of the Garda water unit. Anyone that thinks he didn’t notice an alarm or ignored an alarm is living in fantasy land.

 

[helodriver87]

Experienced divers die from complacency or not being on their game regularly. If you think experience makes you immune to human error, you're the one in fantasy land. You want to know when a pilot is most at risk of a fatal accident? It's between 500 and a thousand hours. Not because they're inexperienced. They can fly the hell out of the aircraft. It's because they're comfortable and competent and they let their guard down and that's when accidents happen. You can't sleep on a rebreather. It's not open circuit where you just breathe and watch your depth. If you get complacent, you can miss things like unsafe loop contents. You're trying to fit this accident into a neat box that can simply be handwaved away as rebreathers being dangerous. It shows a lack of understanding of rebreathers and human factors on your part.

 

[Celt]

You're trying to fit this accident into a neat box that can simply be handwaved away as rebreathers being dangerous. It shows a lack of understanding of rebreathers and human factors on your part.

Rebreathers are dangerous and that is a fact that was well known to the man that died. There’s only one explanation for what happened, the equipment malfunctioned and for whatever reason he didn’t get to use his bailout.

 

[helodriver87]

Rebreathers are dangerous and that is a fact that was well known to the man that died. There’s only one explanation for what happened, the equipment malfunctioned and for whatever reason he didn’t get to use his bailout.

You're leaving out the very real and even likely possibility that he made a mistake that prevented him from using his bailout. As has been explained to you multiple times, high PO2 doesn't instantly kill and he was likely aware or capable of being aware of the malfunction based on what we know. Why that's so hard to accept, I don't understand.

 

[KenGordon]

Takes longer for who, some people have very low oxygen tolerance, you have to test equipment for the weakest user

what is very low? The 1.6 number is basically made up. Various navies used to run higher ppo2 and very few tox events happen lower. The Shearwater controller will alarm at a user specified ppo2. If you think you will not immediately at 1.6 set it to alarm at 1.4 and run a set point of 1.1, lots of people run 1.2 rather than the default 1.3

Actual data tells us that the typical diver has a huge margin for oxtox.

Personally, I am much more afraid of low ppO2 and passing out. That has been extensively tested by pilots and is not such a guess, also the difference is only the odd minute of inattention.

 

[uwxplorer]

Rebreathers are dangerous and that is a fact that was well known to the man that died. There’s only one explanation for what happened, the equipment malfunctioned and for whatever reason he didn’t get to use his bailout.

I guess you have evidence we don't...

 

[Celt]

You're leaving out the very real and even likely possibility that he made a mistake that prevented him from using his bailout. As has been explained to you multiple times, high PO2 doesn't instantly kill and he was likely aware or capable of being aware of the malfunction based on what we know. Why that's so hard to accept, I don't understand.

Whether he was aware of the malfunction or not, it’s still a malfunction. How can you then say it was a user error. Just because someone fails to bailout doesn’t make the reason for the bailout their fault.