Well, here is some background:

This was a demo job back when I was in telecomm (I'm a software engineer now, so I don't really care what happens in the DC, heh). It was late at night, the only time this company would let us in, and we were trying to pull out the huge pile of spaghetti under the tiles. There were kvm cables, network cables, power cables, ibm type 1 cables (which are virtually identical looking to power cables), etc.

So me and a buddy were about 2-3 tiles apart, pulling stuff through and cutting it out from a particularly large pile when crack, the sprinkler head that was completely covered in cables broke and dark, oily water came spraying out. This lasted about 10-15mins with a steadily decreasing pressure. They never did find the cut-off switch for it. All told it just left standing water over a large area under the tiles. Thankfully there were tiles still in place directly above it so no water got above the tile line.

As for repercussions, I think the company was sufficiently embarrassed by a) not even knowing there was a pressurized fire suppressant system down there b) had no idea how to shut it off, that they called it a draw. We were never notified about it and had just started work, so we hadn't uncovered any other heads yet.

This was also the job I nearly cut my thumb off trying to demo out some 300 pair cable from a pipe it might have slid through 10-15 years previously when it was installed, but over the years it had swollen tight. Good times.

So glad I just sit at a keyboard all day now, hehe.