Question on non-condensables in ammonia

[aramis]

No doubt Andy is a smart guy.

I was only refering to air going into a system when gas was pissing out.

I'd love to hear from anyone who purged air out of a positive pressure system that had it because of an outward leak, possible but highly unlikely!

If Andy reads this post I hope he can contribute with his opinion.

Unless your system works in vacuum (which I doubt) almost all systems contaminants have found their way into a positive pressure system.

The problem is to discard how many of these were affected because of bad practices.