Posted by daestrom on September 2, 2007, 5:39 pm
Nonsense, surely you've seen a rag-hat or someone replacing 'zincs'. The
zinc anodes put into the water-box ends of sea-water cooled items is exactly
that. And along the hull near the shafting and propellers. Their
inspected/replaced as part of every drydocking. Even the insides of ballast
tanks have a few 'zincs' welded into them in key locations.
As I said before, *active* cathodic protection is something that I've only
seen used on ships in the 'mothball' fleet while tied up four abreast in
places like Mare-Island (now closed).
Funny, many's the time I dragged degaussing cables around submarines in dock
to reduce their overall magnetic signature. Minesweepers were about the
only ones I knew with active systems though. Had to learn the function of
'D', 'H' and 'T' coils just for EM3&2.
Posted by dances_with_barkadas on September 2, 2007, 11:45 am
change "sailor" to "mariner", if you're referring to a SS, an M/V, a
USNS, or one of the command ships (USS Mount Whitney, USS Blue Ridge).
The Ready Reserve ("mothball") Fleet is in the custody of the
Maritime Administration. Red & white stripes on the stack. Many were
activated for the recent show in Iraq.
Posted by dances_with_barkadas on September 1, 2007, 11:38 pm
purge the system of Oxygen with Nitrogen, then seal it?
if not, then go google on, and patent-search on, "deaerating feed
tanks". You probably don't have bleed steam on hand to run it with,
Posted by dances_with_barkadas on September 1, 2007, 11:46 pm
On Aug 24, 1:46 pm, nicksans...@ece.villanova.edu wrote:
Is that because, as a mass-produced item, they're fairly cheap?
Maybe you're better off swapping a new radiator in, every XX years,
then installing another layer of complication.
Sell the old radiator to some junkyard. Scrap metal is worth a lot of
Posted by Jon Elson on September 4, 2007, 5:20 am
No, having a flood in your attic will NOT be a good thing to
have happen! Your ceilings will fall onto all the stuff in the
room below, MAJOR MESS!