I've done MANY runs over the last 12 years (Give or take with a few breaks inbetween), but the first time your PC does something different, it will scare the PHUCK out of you.
My moment of shocked terror happened early in my pressure cooking career with that little AA 907 I bought in the mid-90's.
But the moment it pops open and starts venting ~18-20 PSIG steam is pretty intense (you really had to be there).
It begins with the very startling (and loud) "POP!" sound as the valve opens followed immediately by the loudest roaring hiss you've probably ever heard (it was deafening) as the steam blasts out in four directions (as designed). At least the blast is disbursed enough and the vent holes are small enough to ensure you don't cook any skin off if you're standing close by. Getting hit by the vertical blast from a popped blowout plug would probably end very badly. So watch those gauges!
I've never left a cooker with the heat still on alone for more than about 10 minutes ever since, and I'm always within earshot of the weights rattling (I don't use the 907 hardly at all anymore). Having a mini steam explosion in my kitchen while using a cooker really made a lasting impression.
Another item some may not realize are potential deadly bombs,
are of course SCUBA tanks,
And like wise welding tanks,
Or any tanks of highly compressed gas.
They should never be dropped;
Or used without first, having been trained in safety procedures.
Edited by shiftingshadows, 26 March 2022 - 02:34 PM.