Infiltration

Cabiria \|	Need Advice on O2 Detector < on 1/30/2007 8:45 PM >

	I am wanting to explore a tunnel system where I feel there is a good chance of methane gas build up. Call me paranoid but I wish to have an O2 detector before go tunnel diving. Does anyone have a recommendation on a detector? Obviously I being more cautious than most people would be, but I figure spending a little bit to get an O2 detector is better than just taking my chances.

kjohnnytarr location: Columbia, Missouri Gender: Male Team Asbestos: CoMO \| \|	Re: Need Advice on O2 Detector <Reply # 1 on 1/30/2007 8:47 PM >

	What sort of tunnel is this? I wouldn't worry about it, but if you are, a good tool catalog (Northern tool, I think) may be able to sell you one. It seemed like a good idea at the time...

Geo

Re: Need Advice on O2 Detector
<Reply # 2 on 1/30/2007 9:03 PM >

Posted by Cabiria
I am wanting to explore a tunnel system where I feel there is a good chance of methane gas build up. Call me paranoid but I wish to have an O2 detector before go tunnel diving. Does anyone have a recommendation on a detector?

Obviously I being more cautious than most people would be, but I figure spending a little bit to get an O2 detector is better than just taking my chances.

Go to your local HVAC supply shop. They should have multi-gas detectors on the shelf.
GV

Cabiria \|	Re: Need Advice on O2 Detector <Reply # 3 on 1/30/2007 9:09 PM >

	Thank you to both of you.

ugly location: Ohio Gender: Male get busy living, or get busy dying. \| \|	Re: Need Advice on O2 Detector <Reply # 4 on 1/30/2007 10:20 PM >

	i looked into getting one once, but they're too darn expensive for me. if im in an unfamiliar tunnel, i just pay very close attention to my heart rate, breathing, and how i feel in general. http://www.greatlakesurbanex.com

Cabiria \|	Re: Need Advice on O2 Detector <Reply # 5 on 1/30/2007 11:07 PM >

	Unfortunately that is not an effective method of prevention. While your lungs fill with methane gas your breathing stays typically unchanged. You don't realize you have no oxygen until you collapse suddenly onto the ground dead. Although probably one of the better ways to die I wish to avoid it.

ugly

location:
Ohio
Gender: Male

get busy living, or get busy dying.

Re: Need Advice on O2 Detector
<Reply # 6 on 1/30/2007 11:19 PM >

Posted by Cabiria
Unfortunately that is not an effective method of prevention. While your lungs fill with methane gas your breathing stays typically unchanged. You don't realize you have no oxygen until you collapse suddenly onto the ground dead.

Although probably one of the better ways to die I wish to avoid it.

not that i disagree with you. i mean relying solely on your own body to discern the air quality of an underground space is never a good idea. im just saying that if you're in a tunnel without an expensive o2 detector, your body should indicate that something isnt right before you just pass out and die. that is unless you're sprinting through the tunnel. at least thats what they talked about at a confined spaces seminar that i had to go to for work.

either way, if you're in a tunnel and you suspect it might be full of some deadly gas, you should probably just stay out.

http://www.greatlakesurbanex.com

Cabiria \|	Re: Need Advice on O2 Detector <Reply # 7 on 1/30/2007 11:21 PM >

	Non sense. If I discover it to be filled with O2 and it seems interesting enough I will probably get an oxygen assist. To each their own I suppose. Edit: The smart thing would obviously be to stay out and you are right that there are symptoms, but most people overlook them. Hopefully they aren't too expensive. [last edit 1/30/2007 11:32 PM by Cabiria - edited 1 times]

Geo

Re: Need Advice on O2 Detector
<Reply # 8 on 1/30/2007 11:56 PM >

...Hopefully they aren't too expensive.

If i remember correctly a 4 gas unit was $189usd.
GV
Ps. what were we talking about?

tick location: Abingdon, VA Gender: Male \| \| \|	Re: Need Advice on O2 Detector <Reply # 9 on 1/31/2007 10:21 AM >

	I've used multigas meters for confined space entry... They're expensive, require constant recalibration (which means spending more money on calibration gas), and the individual probes only last a year or so before they need replacement. Personally, I don't feel like they're worth the trouble (unless OSHA requires them for your job), I just always pay attention to my breathing, heart rate, etc...

HillbillyHorus location: Charlottesville Virginia Gender: Male Im in ur government, killin ur d00dz \| \|	Re: Need Advice on O2 Detector <Reply # 10 on 1/31/2007 12:56 PM >

	Yeah if you start running low on O2 you don't just suddenly drop dead. You just start to feel dizzy and woozy, and you have enough time to climb up a manhole shaft to breathe some air through the tubes. I've done it before You can't fall off a mountain.

Sentinel location: Lawrence, KS Gender: Male \| \|	Re: Need Advice on O2 Detector <Reply # 11 on 2/1/2007 4:04 AM >

	I didn't realize that they were that expensive. I probably would spend my money on something like that, especially if it needs to be replaced regularly. Just be careful whatever you do.

Chatham

location:
Fredericton, New Brunswick

I am behind you...

Re: Need Advice on O2 Detector
<Reply # 12 on 3/4/2007 6:53 AM >

Posted by Cabiria
Non sense. If I discover it to be filled with O2 and it seems interesting enough I will probably get an oxygen assist. To each their own I suppose.

Edit: The smart thing would obviously be to stay out and you are right that there are symptoms, but most people overlook them.
Hopefully they aren't too expensive.

If i found a tunnel filled with O2, i don't think i would run out, id stay and have a good time.... since you know O2 is OXYGEN.

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