[R-390] Grounding and CAD Welding

[rbethman]

It has been over two decades since I have been involved in this realm 
other than my own ham shack and property.

I do NOT remember having access to CAD welding back then.  I've learned 
of it since.

The method we used when I *was* working this issue, was to used copper 
split bolts at ever connection, AND silver braze each joint.

It was a royal PIA!  However, that's what we had.  I hated working the 
South Pacific Islands with a passion!  Crushed or ground coral is 
insane!  We'd have to dig our trenches deeper than usual, lay out the 
grid conductor, then drive the ground rods.  Then we drug the acetylene 
torch around to EACH connection.

On one particular trip, the "Engineers" deemed that solid brass rods, 12 
feet long would be used.  Oh GREAT!  Ever see a 3/4" dia. by 12 ft long 
pretzel?  We raised all sorts of heck - UNTIL they finally sent us the 
Copperweld rods.

Bob - N0DGN

Tisha Hayes wrote:
> I was first introduced to CAD welding as a means of attaching a cathodic
> protection lead to a pipeline. Our corrosion techs ran around everywhere
> with a shovel a CADWELD kit and a half-cell.
>   
<snip>

-- 
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|             AM Amateur Radio Operator    NØDGN                   |   
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| Bob Bethman                \\\|///     " The absence of a danger |
|                           \\ ~ ~ //      signal does *NOT* mean  |
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