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Radiator questions - Page 4

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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.

(former EMC(ss))

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
money nowadays.

Posted by Jon Elson on September 4, 2007, 5:20 am
 dances_with_barkadas@yahoo.com wrote:

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!


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