In article , Ian Stirling says...

But you've not got whole tanker-loads of LN2.
I'm not saying it's certain to happen, just that there may be a risk.

I don't think this is a real-world risk. You may possibly
be thinking of liquid *air* where there is already a considerable
amount of oxygen present. The nitrogen will indeed distill
off and leave behind a considerably enriched mix, and this
could in principle light off.

Jim

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