Compressing gas containing 20% O2

[47289560]

Hi
it is my understanding that compressing gas with over 10% Oxygen is dangerous.
I have been asked to take a number of cylinders filled to 200 Bar of 20% Oxygen balance Helium, and compress them through to a pack containing 64 cylinders. Can anyone confirm where i can find evidence to say compressing Oxygen at 20% is a big no no?
the make of the compressors are compair h series..

any help would be greately appreciated.
thanks

 

[mbt22]

This sounds rather like an air compressor in terms of hazard.

Certainly oxygen-enriched atmospheres (more oxygen than that in air) may need special precautions as things become rather more flammable.

 

[JLSeagull]

Compressing natural gas with 20% oxygen would be hazardous. This would be true of other flammable gasses.

 

[zdas04]

The Upper Explosive Limit of Natural Gas is 16% so even that would not be particullarly dangerous. It sounds like you're compressing deep-diving tanks and that is done every day. I would say the biggest hazard is the pressure.

David

 

[BenThayer]

you might consider using an oil-free compressor.