Re: Source Stuck - Ideas Requested

[Ted de Castro <tdc@xrayted.com>]

Why not simply put it on a lathe and with a parting tool split the pig
below the plug? 

Since you know the ID of the pig you should never come near the source
AND you can turn it very slowly.

In fact if you stop a few mils short of the ID - you should be able to
simply twist the pig apart.

"Pollan, Paul B." wrote:
> 
> Greetings Radsafers:
> 
> I currently have a 87 uCi Cs-137 source in a lead pig with an opening of
> 0.75 inches.  The source is in the bottom of the Pig in it's normal
> location. The delimma is that there is a lead plug of unknown thickness
> above the source.  The air gap between the top of the plug and the top of
> the Pig is 1.5 inches.  The Pig is 6 inches tall.  Best guess is that the
> source is 3 inches from the top of the Pig and the plug over it.  We are
> trying to remove the plug, which has already been galled.  Our concern is to
> tap the lead plug to remove it without getting into the source itself.  I
> figure to try and roughly calculate the thickness of the lead plug.  The
> dose rate at the opening in the top of the pig is 0.7mrem/hr.
>  Calculator is at home. - Thanks. - Paul.
> 
> Paul B. Pollan, RRPT
> pbpollan@southernco.com
> 
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