Liquid Nitrogen: Guidance for Safe Storage and Handling

[Hondacity]

http://www.uq.edu.au/ohs/pdfs/Liquidnitrogenguidance.pdf

please archive

please Read

if you're lazy....

LN2 vaporizes....and will take up the oxygen inside your house. store it in your porch. not inside...

don't cold burn your hands and feet use sandals so your foot won't hurt benching...

don't use on pets

**suggestion of usage....freeze locks..and brake into private properties...what you do there...im not liable for/to

[Splave]

anyone remember the scene in Mighty Ducks where they spray the opponents jerseys with ln2 and shatter them rofl. Will never forget that


I store my dewar inside my tiny apartment, havent died yet! Probably because I usually have a full dewar with low pressure 5psi or so.

I have noticed white spots on my finger nails and small little red dots on my arms once in a while from getting a little too ginger with the lever ;)

[Patch]

Don't pour through the burn, Splave!

Mine are in the garage. Lots o ventilation there.

[Kal-EL]

My dewars are filled and stored in my small office and I @#$%T 234%222222222 kjvsdkvc................ seem to b ef ine

[thebanik]

Oh shit, I keep them in my benching/bedroom, would move them to some other room for sure....

[MaadDaawg]

Mine is in the small closet in my small office/benching room... so far still breathing

BUT

Brought up an interesting point I been meaning to relay

Last Friday I went to get my Dewar filled and only one guy was there, not the brightest bulb, and I was told he couldn't fill my dewar today. I, of course, FREAKED OUT, so he told me to go ahead and do it myself. He handed me a long metal hose and told me to pick any of the 160s and go for it.

kewl, I thought.

No gloves, so I wrapped my hands with the tails of my shirt and started filling my dewar. No probs but I couldn't remove the hose w/o a wrench so I left it hanging there. He had told me to just take off since I did the work the LN2 was free :P

Kewl I thought

Got home and at dinner the wife asked me what was wrong with my finger ?? Half way around my ring finger, where my wedding band sits, the skin was blazing red :eek: Maybe a bug bite I speculated ;) Then it dawned on me, the cold must have penetrated my shirt and frozen my rign without my knowing or feeling it, so,

I'm thinking I got severe frost bite. Been putting neosporin on it every day since and can't wear my rign out of town :D I mean... I might lose it right ;)

Seems to be getting better and no signs of gang green, but, was going to post that you should respect this shit cause it can get ya :shock:

TheBanik just beat me to it :)

[Patch]

the LN2 was free :P


I suspect you had an important safety point to relate, but I couldn't concentrate on the rest of your post after that line.

[ReverendMaynard]

wow Maad, take care of that bro. When you work with a hazardous material long enough, you can get complacent. Not the best thing to do with shit that can seriously harm you.

Take caution and care my friends.

[Splave]

wtf you didnt feel it? or was the testosterone on swole rofl

[ReverendMaynard]

it would numb you before you would ever feel that cold homie.

[Splave]

damn I must have sensitive baby hands or you saying because it was metal to cold not skin to cold.

[FACE]

that cold it really wouldn't matter if it came in gradually enough. The metal would get cold fast enough to really do some damage before your skin would feel something's up.

Being to close to the ln2/dice for extended preiods of time can really dry out your skin too. FYI. Good thing I use a lot of lotion... :leghump: :rofl

[ReverendMaynard]

that's the deal FACE. If you can feel it, the damage is done.

[Splave]

gotcha, will wear pants next time I ln2 for sure

[ReverendMaynard]

gotcha, will wear pants next time I ln2 for sure

lol, wouldn't want a Dumb and Dumber ski lift scenario to go down on the ol one eye'd trouser snake.

"Oh look, frost!"

[FACE]

lol, wouldn't want a Dumb and Dumber ski lift scenario to go down on the ol one eye'd trouser snake.

"Oh look, frost!"

You mean the frost is bad for it? :blink:

[ReverendMaynard]

You mean the frost is bad for it? :blink:

maybe not the frost but the removal from frosty metal, absolutely.:ohcrap:

[FACE]

maybe not the frost but the removal from frosty metal, absolutely.:ohcrap:

Well, there goes my weekend plans..... :laughing:

Once I get the timing right for some ln2 fun, I'm going gloves and all... My hands are important for work and shower time, so damaging them is not a good idea.

[Bobnova]

LN2 does not oxidize.

LN2 becomes N2, this adds to the amount of N2 in the room and displaces the other gasses. It forces out some N2, some O2, some co2, and some of every other gas.
The percentage of the room air that is N2 goes up, and the others go down.
Hence, if you don't get more oxygen into the room you will eventually have a room with 99.9% ln2 and .1 or less% oxygen, and rather dead inhabitants.

Oxidizing means combining with oxygen, which N2 does not do at normal pressures and temps.

[Hondacity]

my fault..it "vaporizes"


welders use lotion to protect their skin ... thanks for the info

[Splave]

LN2 does not oxidize.

LN2 becomes N2, this adds to the amount of N2 in the room and displaces the other gasses. It forces out some N2, some O2, some co2, and some of every other gas.
The percentage of the room air that is N2 goes up, and the others go down.
Hence, if you don't get more oxygen into the room you will eventually have a room with 99.9% ln2 and .1 or less% oxygen, and rather dead inhabitants.

Oxidizing means combining with oxygen, which N2 does not do at normal pressures and temps.

bobnova droppin some knowledge :thumbsup:

[MaadDaawg]

gotcha, will wear pants next time I ln2 for sure

:rofl: :rofl:

Damn, no wedding ring on and still no hot chicks have hit on me :Dizzy:

:rofl:

[FACE]

:rofl: :rofl:

Damn, no wedding ring on and still no hot chicks have hit on me :Dizzy:

:rofl:

They're probably like, "Ewww, is that a growth on his finger?"

:taunt:

[MaadDaawg]

:rofl:

If their interest went that far I'd be flattered bro lol But I'm gonna latch onto to that thought to make me feel better :D

[Patch]

I use a 2.3L thermos with a handle.

When filling from the transfer device, the cold condensation itself that falls down on your hands can get pretty uncomfortable after a few seconds. So I used some armaflex tape to make a protective "hood" on the thermos that extends over my hand. Works great.

[Gunslinger]

Socks will absorb LN2, and freeze your toes, found out the hard way. :D

[Patch]

Hard toes. Ouch.

[Splave]

Socks will absorb LN2, and freeze your toes, found out the hard way. :D

rofl truth! I shot some at my dads leg with some as a joke and he got cold foot syndrome

[Jor-El]

I always get dizzy and headaches after a long Ln2 haul breathing all that smoke...

[V2-V3]

LN2 burns can cause skin cancer, so buy gloves or if ur not rich buy welding gloves to handle it.

cryogenic materials are so cold when they flash freeze skin cells it will break part of the DNA sequence and because of the nature of cryo flash freeze and thaw the cell will survive and begin replicating as a mutated cell AKA 5 or 10 years later u got skin cancer :(


my recommendation after using LN2 for nearly 10 years, wear long sleeved shirt, gloves when filling dewar or filling flasks, wear jeans, and full coverage shoes. in a building just open a window and you wont die.

also dont ever shoot or knock over a pressurized LN2 tank while indoors or standing at even a moderate distance a 180L dewar will take out your house if it cascades due to rapid decompression of being introduced to the vessels vacuum. if some dumbass pushes the glass-pack tank over it most likely will be the first and last time he does it :)