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2024-05-03 01:31:19
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THWN2
Location: MIDWEST CHICAGO NW SUBURBS Gender: Male Total Likes: 5 likes
| | | DANGEROUS CHEMICAL FUMES YOU CANT SMELL THAT CAN HARM YOU < on 1/31/2022 2:00 AM > | Reply with Quote
| | | Many old industrial sites have chemicals that are in the ground that off gas to the surface such as; PCE,TCE,PCBs,PATROLEUM,PFOS,PFOA & PFAS. Many of these are FOREVER CHEMICALS which is not good at all. I wasnt aware of this untill i picked up the paper one day. In schools,large apartment buildings, government buildings,hospitals,office buildings, dorms & commercial buildings ect built between 1950-1978 theres a chance they use CAULKING around windows,doorways,expansion joints & the interior that can contain VERY HIGH levels of POLYCHLORINATED BIPHENYLS A.K.A. PCBs. They are having many problems with health issues in the public schools because of this caulking off gassing . They also used this potent CARCINOGEN/ENDORCRINE DISRUPTOR in ADHESIVES, FIBERGLASS PIPE INSULATION & BATTING,STYROFOAM INSULATION,CORK, ACOUSTIC TILES,ROOFING,ect. Google BURLINGTON VT HIGH SCHOOL PCB and you will find they are going to have to build a new high school because the old one has EXTENSIVE PCB CONTAMINATION.Also Google PCB containing building materials. They are saying PCBs are the new asbestos. Ive seen exploits of hospitals ect that are still sealed {no broken windows}. It might be a good idea to get a respirator thats good for PCBS and the other above mentioned chemicals. I thought PCBs were in capacitors,light ballasts trasnsformers & old hydraulic systems and were pretty much a thing of the past in new situations, boy was i wrong. I hope this helps this site.
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| DudeManDeuce
Location: Eastern PA Gender: Male Total Likes: 70 likes
| | | Re: DANGEROUS CHEMICAL FUMES YOU CANT SMELL THAT CAN HARM YOU < Reply # 3 on 2/16/2022 11:18 PM > | Reply with Quote
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| Aran
Location: Kansas City Gender: Male Total Likes: 1848 likes
Huh. I guess covid made me a trendsetter.
| | | Re: DANGEROUS CHEMICAL FUMES YOU CANT SMELL THAT CAN HARM YOU < Reply # 9 on 5/8/2023 8:24 AM > | Reply with Quote
| | | Posted by hoover 2 When you say dangerous chemical fumes, Does that include gases in sewers? I've explored a fair amount of sewers and I've never had any safety issues involving methane gases that can kill you. If that's the case, How would I know if there are bad methane gases in the sewers? How would it effect me?
| Okay, this is going to be a long one but here's some valuable info you really should memorize if you're running around sewers. The two big gases to worry about are methane and hydrogen sulfide (H2S), both which form from the decomposition of organic matter- which means that the more stagnant a sewer is, the greater the chance for gas buildup. Methane is incredibly explosive and can ignite when it makes up 5% of the surrounding air or more. Though it's not poisonous, it can displace the oxygen in the air and act as an asphyxiant- though you're more likely to blow yourself up long before you suffocate. Methane isn't usually a huge problem because it's lighter than air and thus tends to rise up out of manhole shafts and get displaced by fresh air, with the exception being long, deep passages that lack manholes or airflow. H2S on the other hand is the gas all explorers fear. Unlike methane, H2S is heavier than air and thus settles into low points in an underground system where it might be difficult to climb back out if you enter and become affected by the gas. It's also explosive, but that's frankly irrelevant. H2S begins to affect you at 0.001%, knocks out your sense of smell at 0.01%, and is instantly lethal at 0.1% of the surrounding air. With an explosive point at 4%, you'll be dead several times over long before its flammable qualities become problematic. Possible symptoms of bad air exposure include headache, nausea, loss of balance/coordination, confusion, shortness of breath, burning eyes/nose/mouth, dizziness, weakness, fatigue, and euphoria. Experiencing any one of these symptoms underground is a cause for alarm, and experiencing two or more should be a sign to instantly turn around and make your way to the exit as quickly as you can. Hell, some would say even at one symptom you turn around. These symptoms will increase in severity the longer you are exposed, making self-rescue drastically more difficult to the point of impossibility in some cases. This also covers carbon monoxide and dioxide poisoning, which are possible. Environmental warning signs can include bubbles rising up from your footsteps in the mud, insects swarmed around vents/manhole covers, poor airflow, etc. The smell of rotting eggs is definitely cause for alarm, but if you stop smelling it after a while you should be even more alarmed (H2S knocks out your sense of smell as the concentration of gas increases, remember). Also, decaying leaves in storm drains can create a gas hazard just as much as decaying sewage in sewers. Now, I recommend a gas meter if you can get your hands on one, but since they're pricey most explorers don't use one. I will say that even if you can do sewers without a meter (though it can be risky), mines are a different ballgame (even if they look similar) and many types should never be run without a gas meter regardless of experience.
[last edit 5/8/2023 8:27 AM by Aran - edited 1 times]
| "Sorry, I didn't know I'm not supposed to be here," he said, knowing full well he wasn't supposed to be there. |
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