safety of pure oxygen to produce ethylene oxide

In our project, I need to write a page about the safety of using Pure Oxygen with Ethylene to produce Ethylene oxide. We are gonna use 99.9% of pure oxygen. Is it safe? Qualitatively characterize the explosion risk as high, moderate, low, or negligible.

I just need a page includes the introduction and the risk for the explosion. I attached photos of the requirement information

and here is some helpful for intro: