I despair, I really do

[Sea Dog]

Not only is inhalation of CO2 a problem, it is the fact that if as described by you the generators are not in a steel box, vented at the bottom over the side there can be leakages of petrol fumes into the boat bilges. If this happens not only will these numbskulls take themselves out of the gene pool but everybody around them too when eventually an explosive air/fuel mixture is achieved and ignited.Without looking it up and quoting, I believe this is covered by the BSS.Shreck.

All points made several times earlier in the thread if you read back Shrek, but sadly unlikely to be heeded it seems.

[MtB]

Not only is inhalation of CO2 a problem

 

 

No it isn't.

 

You're thinking of CO. Please get it right if you're handing out advice in an open forum.

 

Thanks.

[John V]

 

 

No it isn't.

 

You're thinking of CO. Please get it right if you're handing out advice in an open forum.

 

Thanks.

 

Oh yes it is !!!!

 

but not the way he meant

[MtB]

 

Oh yes it is !!!!

 

but not the way he meant

 

 

Well yes, breathing neat CO2 would suffocate you but it would take some serious effort to do that. I can't imagine any circumstances where someone might breathe a dangerously high concentration of CO2 accidentally and/or without realising what they were doing.

[Shreck]

Ok, fair enough.

 

Bye.

[John V]

 

 

Well yes, breathing neat CO2 would suffocate you but it would take some serious effort to do that. I can't imagine any circumstances where someone might breathe a dangerously high concentration of CO2 accidentally and/or without realising what they were doing.

 

Wrong again Mike, surprisingly low concentrations of CO2 are hazardous and concentrations of less than 15% are usually fatal

 

http://catalogs.praxairdirect.com/i/27114-safety-precautions-for-carbon-dioxide/16

[Guest]

Co.

CO

[MtB]

 

Wrong again Mike, surprisingly low concentrations of CO2 are hazardous and concentrations of less than 15% are usually fatal

 

http://catalogs.praxairdirect.com/i/27114-safety-precautions-for-carbon-dioxide/16

 

 

Fascinating, thank you. We were (incorrectly obviously) taught it is benign in the gas skool.

 

Even so, I stand by my post 54 to which you replied.

 

Or can you suggest circumstances where members of the public might inadvertently breathe dangerously high concentrations of CO2?

 

One wonders if the CO deaths attributed to CO from the generator exhaust might also have been from CO2 given the low level of fatal concentration when breathed, and the symptoms appear similar to CO poisoning.

[John V]

The reason I am familiar with CO2 asphyxiation is from being on fruit carrying cargo ships. Concentrations of CO2 at levels that would cause you to drop almost instantly were very possible in the cargo holds (as well as other gas mixes equally deadly) and strict precautions had to be taken with breathing apparatus worn when ever in those areas. Even so accidents occurred. The other source of CO2 that was sometimes used for specialist cargoes was dry ice.

 

It seems that with CO2 quick removal from the concentration means rapid recovery whereas CO is absorbed by the blood and has to be flushed out

[mark99]

CO

 

 

I like to leave a bit for others to sweep up!

[bizzard]

Dry ice is fun to play with. At my dads NUR children's Christmas parties we had ice cream which came packed in dry ice, we had great fun pushing spoons into it which made a wonderful buzzing noise. We also got there early to blow up balloons.

[Delta9]

 

 

Well yes, breathing neat CO2 would suffocate you but it would take some serious effort to do that. I can't imagine any circumstances where someone might breathe a dangerously high concentration of CO2 accidentally and/or without realising what they were doing.

Entering a pub cellar where there has been a leak.

[MankySteve]

Our freezer system in work uses co2 as refridgent they all have co2 detectors and alarms.

[Sea Dog]

It seems that with CO2 quick removal from the concentration means rapid recovery whereas CO is absorbed by the blood and has to be flushed out

That's right, the body is adept at ditching excess CO2 - you do it with every breath. As I understand it, it's the CO2 concentration in your lungs which makes your breathing reflex work and that's what stops you holding your breath for long.

 

CO2 drench systems are fitted is some ships' engine rooms as fixed firefighting arrangements. It will kill anyone left in there when fired, and is said to be quite a nasty way out because of that breathing reflex thing, but we're talking quite high concentrations. He did mean CO rather than CO2 though.

[cuthound]

CO2 drench systems are very rare now. Most have been replaced with human friendly alternatives, such as Inergen or water mist.

 

When I first started work in the power industry 40 odd years ago they were very common.

 

Edited to add a 2 to CO, so that it indicates carbon dioxide, not carbon monoxide.

Edited May 10, 2016 by cuthound

[Guest]

 

 

I like to leave a bit for others to sweep up!

[Murflynn]

this is an interesting topic.

 

where I have been dealing with CO2 on worksites, particularly in pits, the safety dept always insisted on us using oxygen deficiency meters, however they never said that CO2 was toxic in reasonable concentrations like 10%, which clearly it is.

10% CO2 in the atmosphere will typically lower the O2 concentration to about 19%, which was also considered the danger point when using oxygen deficiency meters.

It would seem the HSE boys had no knowledge of the reason why that was the danger point.

[ditchcrawler]

CO drench systems are very rare now. Most have been replaced with human friendly alternatives, such as Inergen or water mist.

 

When I first started work in the power industry 40 odd years ago they were very common.

Have they. BCF was quite good at putting fires out

[mark99]

Have they. BCF was quite good at putting fires out

 

CO is flammable so would not be good to drench any fire with it.

Edited May 9, 2016 by mark99

[Sea Dog]

CO drench systems are very rare now. Most have been replaced with human friendly alternatives, such as Inergen or water mist.

When I first started work in the power industry 40 odd years ago they were very common.

They made a resurgence in the Royal Navy when Halon was blacklisted. Retrograde step of course, but must needs. Hopefully, we'll all be carrying water mist extinguishers soon, but I believe we're still waiting for the BSS to catch up.

 

ETA - CO2 systems that is, not CO.

Edited May 9, 2016 by Sea Dog

[Murflynn]

ain't it amazing that peeps who should know better still confuse CO with CO2?

 

when I googled 'CO2 poisoning', nearly all the entries were about CO poisoning.

[Athy]

As I understand it (without resorting to Internet Search Engines), CO2 is what we breathe out and green plants take in. So what's CO? Just carbon?

[MtB]

As I understand it (without resorting to Internet Search Engines), CO2 is what we breathe out and green plants take in. So what's CO? Just carbon?

 

 

http://bfy.tw/5g4z

[Delta9]

 

 

http://bfy.tw/5g4z

That only works if the first result is something relevant. In this instance the top result is the definition of the prefix 'co' and the second and third results relate to .co domain names...

Edited May 9, 2016 by Delta9

[Guest]

No it isn't.

 

You're thinking of CO. Please get it right if you're handing out advice in an open forum.

 

Thanks.

Hobby horse Mike?

 

It's an easy mistake oft. made but when it it is most folks can differentiate between what was typed and what was meant.

 

No hamsters were harmed during the innocent error and all the bunnies were fluffy.....