Most of the ships use anti-freeze in the chill water loop now. They tell me it makes for a more efficient transfer of heat than with just plain water.
I think jellyfish are the least of their worries. When I was on Enterprise we often had seawater leaks into the freshwater side of the main condensors. That makes jellyfish look like a picnic by comparison.
IIRC the chill water fed the scuttle butts directly. Is my memory failing me, did they change this or were you guys just a little callous about the drinking water.
BTW welcome aboard!
Interesting on the anti-freeze. I've worked with chillers in civilian life for years also till I retired and hadn't seen that one.
Hopefully then nobody tapped the wrong line for potable water though. I spend weeks in my spare time trying to track down our loop loss. Sometimes it would be stable for several days and sometimes several hundred gallons could disappear in a matter of minutes. I suspect EO Divisions heat exchangers may have had something to do with it. We had 2 guys TAD up there and they may have been opening a wrong valve. That added to some likely bad coils in the fan rooms.
On the sea water leak do you mean the de-sal plants or the chillers? Neither is good news but I can't understand sea water in the CW loop at all. That would take really bad piping configurations somewhere.