Good catch on spotting that before it let go! Just a tiny thing, most folks around here call them hose clamps, not discharge pipe clamps. Either way, you're totally right that checking them is a must. It's smart to give the gaskets a look too while you're down there. A quick walkaround is the best way to stop the small stuff from turning into a big headache.
Oh man, this is so true. I caught a loose clamp on my rig last month in almost the same spot, right after a pump out. @stella_lee is dead on, that quick look saves your whole day. I keep a wrench right in my pocket now just for that check. It's crazy how something that small can cause such a huge cleanup job.