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tunnelbug
      
location:
California
Gender: Male
 |  |  |  | Re: Hydrogen Sulphide
<Reply # 20 on 1/13/2006 7:41 PM >
|  | | | Forget the rebreathers and gas masks. An analyzer would be nice to have, so you have warning, but everything else would be trumped if you have a basic pony tank (often used as a portable emergency supply of air for SCUBA divers).
With a 6 cu ft. tank (a very small portable unit that can strap on your leg), you'll have an 8 minute air supply. A 13 cu ft. tank will give you 17 minutes. Get a pony tank with an included regulator. The set will run you about 60-100 bucks.
The difficult part will be getting compressed air. Never fill your own tanks. Find a dive shop that knows what your hobby is, so they can fill it. Sometimes they won't fill it unless you have diving certs.
Bearings: A Geographer's Blog
Member of the CTC |
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Slickis
Noble Donor
location:
Kokomo, Indiana
Gender: Male
Rest In Piece Booger 4-6-08
| | Re: Hydrogen Sulphide
<Reply # 21 on 1/16/2006 1:27 AM >
| | | | You can get a decent firefighters MSA SCBA setup used on ebay for around $100. Might be too bulky though.
I've been feeling funny since I went in that open crypt. Not sure what it is. |
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HillbillyHorus
location:
Charlottesville Virginia
Gender: Male
Im in ur government, killin ur d00dz
| | | Re: Hydrogen Sulphide
<Reply # 22 on 1/16/2006 2:08 AM >
| | | | Posted by Slickis
You can get a decent firefighters MSA SCBA setup used on ebay for around $100. Might be too bulky though.
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Probably too bulky for a small drain.
You can't fall off a mountain. |
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Vinny
location:
city watershed wilderness area of Frederick, MD
Gender: Male
| | Re: Hydrogen Sulphide
<Reply # 23 on 2/1/2006 2:40 PM >
| | | | Just realized that this thread exists as well. As an FYI, I just sent a rather lengthy post to another thread about air quality in drains regarding my opinion on the possibilities of encountering H2S gas in various settings such as storm drains and sewer systems, along with info on personal wearable hydrogen sulfide detectors (aka monitors) in the $200 price range, and new commercial respirators which are rated for hydrogen sulfide escape situations. The post may be found at:
http://www.uer.ca/...25294&msgid=359258
...it is reply #11 on page 1 of the thread.
with care,
--Vinny
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Ryden
location:
Barrie On
Gender: Male
| | Re: Hydrogen Sulphide
<Reply # 24 on 2/1/2006 3:12 PM >
| | | | Dam Tunnelbug, you beat me to it. Also for escape there is a system that would be infinitely more portable than a pony tank. Something called spare air, I was looking into it a while ago. Basically just a very small backup pony tank. Just a few breaths of air, but if you turn around once you smell gas, it should be more than enough to get away.
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j0lt
location:
Kobe, Japan
Gender: Male
| | | Re: Hydrogen Sulphide
<Reply # 25 on 2/2/2006 8:18 AM >
|  | | | Posted by Dowcet
As folks often point out on here, masks don't help against an absence of oxygen.
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Why not just use a diving re-breather?
j0lt: Larger than life and twice as ugly! |
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tunnelbug
location:
California
Gender: Male
| | | | Re: Hydrogen Sulphide
<Reply # 26 on 2/2/2006 11:26 PM >
|  | | | | Why not just use a diving re-breather? |
HA HA. Rebreathers are like 2,000 dollars, AND they require constant monitoring, etc. Only extreme divers who go below ca. 500 feet use rebreathers.
A rebreather would be awesome though if you had a few thousand G's lying around.
EDIT: The going rate after a Google search reveals them to be in the 6,000-8,000 dollar range. A pony will only cost you around 100 bucks, along with the first and second stage respirator.
[last edit 2/2/2006 11:34 PM by tunnelbug - edited 1 times]
Bearings: A Geographer's Blog
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