Today morning I checked the pressures, and they were suspiciously high. After refreshing the screenshots a few times, it was evident that we lost pumping power.
After arriving at the site, I immediately saw that all the 3 major turbo stations were tripped. In detail, the XBM and the OMC turbo stations were completely tripped (big and small backing turbos, scroll pumps tripped, all safety valves closed). At YBM only the main turbo was tripped, and only the main safety valve was closed.
The first trip happened at ~9:10 am this morning, and the other 2 between 9:10 and 9:20 am, roughly.

I closed the big gate valves, checked the crush bearings (all were 100%), restarted all the stations, and now they are all valved back in.