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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