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 Post subject: Blind Penetration
 Post Posted: Sat Apr 21, 2012 6:27 pm 
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Joined: Mon Mar 12, 2012 7:07 am
Posts: 75
Rule 4.7 concerning conductive penetrations into the energy accumulators states that "One acceptable solution is using blind penetrations in an insulating material." I was just wanting some clarification on this rule. I have attached a picture of my interpretation of the rule.


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 Post subject: Re: Blind Penetration
 Post Posted: Sun Apr 22, 2012 3:23 pm 
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Joined: Thu Oct 06, 2011 10:23 am
Posts: 4
A think the example referred to in 4.7 implies tapping female threads into a block of plastic on the inside of the accumulator, ie the screw would be turned 180 degrees from what you've shown in the picture It's called "blind" because the tapped hole wouldn't go all the way thru the plastic block.

I'll leave it to the judges to comment on whether the solution illustrated is also valid.


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 Post subject: Re: Blind Penetration
 Post Posted: Mon Apr 23, 2012 6:47 pm 
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Joined: Sat May 27, 2006 12:41 pm
Posts: 71
Location: Rules Committee
The best hope for a quick reply is to submit your question on the support page.

-FHRC


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