Recent content by gpalmer77

Not strictly true. Air composition is the same at altitude, same ratio of oxygen and nitrogen, partial pressure is the key to what you're saying. At least in the first couple layers of the atmosphere.

This article is interesting, it certainly supports the dangers of nitrogen. However, analysis of industrial fatalities where bodies were retrieved mere steps inside a confined space have concluded that victims did not have enough breaths to get back to the entrance point. Injuries sustained...

Nitrogen dissipates very quickly in air, I doubt you ever breathed 100% nitrogen on a fill island. In a confined space that has not been purged with air, the situation is different. This isn't about having oxygen reserves in your lungs/blood, it's about your body stopping breathing. Breathing...

Wow. Just wow. Doesn't Airgas do bulk liquid nitrogen too? With large industrial clients? If so, you should know better. My supplier was Praxair for bulk, and they were quick to support us and educate us when it comes to the dangers of nitrogen. I agree, the household scenario that is the...

The dangers you mention above can be seen, smelled, tasted etc. Someone mentioned H2S which is deadly no doubt, but it does have a smell. Nitrogen cannot be tasted, smelled or sensed in any way by the body. Your analysis is based largely on the chance of exposure, not the risk once exposed. I...

http://m.ehstoday.com/safety/confined-spaces/ehs_imp_38471

Been in an industry that uses nitrogen for blanketing storage tanks for 15 years. Check out what the chemical safety board has to say. Hey man, I've got no problem if you've evolved to the point where you can breathe pure f$%&ing nitrogen. Let the rest of us be safe in the mean time.

No offense, but I'll go with what I learned in tech rescue class over what you found on the interwebs. The garage instance here probably never poses a risk, but there's been many a person who dropped in a nitrogen rich atmosphere, and didn't even know it happened. This is not lack of oxygen...

Nitrogen is not simple asphyxiation as many think. Much quicker. The imbalance of nitrogen and oxygen causes the body's natural regulation of breathing to get all screwed up. You stop breathing, instantly. No grabbing your chest saying I can't breathe. Out. Down. Done.

I have a Chicago Pneumatic gun from HF. I paid $65 for it 8 years ago. It is heavy as hell, but i framed my house and garage with it. Every once in a while it shoots three nails sideways in a rooster tail formation if I'm not careful when adding nails. This is my fault, not the gun. It has...

I did my whole house and currently doing the garage in hardieboard. I butted the boards together between studs and let the next piece hold it down. If you nail too close to the end, you end up bending or splitting it anyway. I used stainless ring shanks, and predrilled everything. When I...

Where I used to work, we called it "mechanic's cologne".

I did consider this, but it complicates a few things, as the framing is not conventional. One side has a 12 ft ceiling, the framing intersects about 2/3 of the way up the lower pitch of the gambrel. The knee wall in the attic on that side is about 2 ft high, and since it is crawl in storage...

Thanks. I had read that somewhere else too. Only thing I don't get is how it's any different from air moving behind roof insulation, where the baffle is not a complete air barrier. Or insulation laid on an attic floor, which is often open to the cold air side.

All helpful information. Thank you guys.