[TowerTalk] another grounding reference MIL-HDBK-419A

[Grant Saviers]

I was looking for the work that one of my  professors (Paul L. Hoover) 
was purported to have patented and made millions from - protection of 
oil well fields and oil storage systems from lightning.  I couldn't find 
that (probably too ancient) but did find the MIL handbook and some 
publications on the oil field/storage protection.  Seems like that is a 
very big business.  Your suggestion about sharp bends and corona 
reduction occurred to me but I didn't see any "sharp bends" guidance in 
my quick scans of the petroleum related papers.  It seems that volatile 
gases are prevalent in such facilities.

Grant KZ1W

On 4/12/2012 6:45 AM, Jim Lux wrote:
> On 4/11/12 10:30 PM, Grant Saviers wrote:
>> 812 pages of everything you might need to know, lots of clear
>> explanations, many equations,&   implementation details.  (includes EMP
>> protection)
>>
>> http://www.repeater-builder.com/antenna/pdf/mil-hdbk-419a.pdf
>>
>> Grant KZ1W
>>
> Yes..  and it has a nice set of graphs showing that inductance doesn't
> vary much with diameter of conductor.
>
> However, I couldn't find the "no sharp bends" guideline in there in a
> quick read through, and I have most of the references it cites, and they
> don't have it either.
>
> It also uses the "cone of protection" thing, and some people think the
> "rolling ball" is a better model, but that's a pretty fine point.
>
> Being from the 80s, it also doesn't reflect the latest Electrical code
> stuff with respect to grounding and bonding, but, again, the differences
> are small.
>
>
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