Years ago (about 1973), I found out those very things you explained about the N2 box when I put about 6 pound of pressure into a $4500.00 high purity French quartz epitaxial tube. Kaboom.
I'm thinking that it is probably impossible to have a career in technology and not have at least one costly incident that proves humans are fallible.
For some reason I evidently woke up one day missing some of my IQ points. I failed to kill the power to a minicomputer system while changing an interface board. I did about $10k in damage.
Over the years I have heard colleagues relating their horrors. I doubt any of us escape.