crazy people!

[Gareth W-B]

Nitrogen is inert so it would be safe the trouble arises when people play with oxygen.

Nitrogen is used in the states for both guns and tyres for its qualities.

Well I never knew that. Cheers Richard: Every day is a school day.

[baldinio]

Must admit I too thought it would splode

[Gareth W-B]

Must admit I too thought it would splode

Thassss coz we is boaff stoopid, innit ???

[RichardH]

Worth a read if you use gas cylinders...

https://en.m.wikipedia.org/wiki/Inert_gas_asphyxiation

[baldinio]

See this is why I use a pump, because I'm waaay too thick to be buggering about with air cylinders

[Gareth W-B]

See this is why I use a pump, because I'm waaay too thick to be buggering about with air cylinders

Lol. Ditto here, too. I only have one PCP among my mini collection, a single-shot BSA Scorpion .177 in a Tactical stock, which I keep charged with an FX Four-Stage pump. Had this as my token PCP set-up since 2012, and got no plans on changing it -- or my M.O. -- any time soon.

[sidelever]

See this is why I use a pump, because I'm waaay too thick to be buggering about with air cylinders

+1

also nitrogen is used in aircraft tyres 200+psi.
Something to do with inert gas used to reduce
fire risks.

[wiggers]

My work is the biggest consumer of liquid nitrogen in the country.
It's bloody cold at -196 degrees C and 1 litre expands to 694 litres of gas.

Glad I got that off my chest :-)

[aris]

There was A YouTube video where someone filled with helium. https://youtu.be/zXajYpk3gRU

Velocity up a little bit.

[tinbum]

The range of gasses that could be tried is quite large, many are inert, but some are plenty nert!

The best and only advice must be "breathing air only" to avoid confusion.

[zephyr]

Combustion requires the correct ratios of ‘fuel’ and oxygen, by using nitrogen that ratio is managed. Hence why nitrogen is sometimes used for:
a) drilling hydrocarbon (oil/gas) wells
b) fire extinguishant

The ‘BOOM’ comment isn’t completely wrong. While the ‘explosion’ won’t be caused by combustion, there could be a catastrophic mechanical failure of the pressure vessel if liquid nitrogen is allowed to warm and become nitrogen gas - the pressure would massively increase. But we aren’t talking of liquid nitrogen, are we?

The unwanted characteristics of nitrogen are, as said before, the potential for asphyxiation (although extreme cold is associated with liquid nitrogen) in addition there can be damage to some of the materials used in seals. Nitrogen molecules are much smaller than oxygen molecules and can get ‘inside’ the material of the seals. This results in (1) a very slow (insignificant) loss of pressure, (2) failure of the seals if there is rapid depressurisation.

To give some perspective of the dangers of nitrogen and the effect of the nitrogen molecule being smaller - ever wondered why crisp bags went from being transparent plastic to the silvery material used today? It’s because the gas inside the bag is nitrogen (no water moisture, as said before), which will leak through the transparent plastic!

[angrybear]

My work is the biggest consumer of liquid nitrogen in the country.
It's bloody cold at -196 degrees C and 1 litre expands to 694 litres of gas.

Glad I got that off my chest :-)

Whilst in the RAF I was Q LOX/LIN production, good fun but LOX is not to be treated lightly.

[ChrisC]

Whilst in the RAF I was Q LOX/LIN production, good fun but LOX is not to be treated lightly.

We used to fill the LOX pots for the Dominie's.

[Shedder]

My recollection is that the air we breathe is 80% nitrogen, so it isn't very dangerous as a gas.