Re: Suppliers for lead bricks

[William V Lipton <liptonw@dteenergy.com>]

I would avoid the traditional, unencapsulated lead bricks, because of
industrial hygiene concerns regarding the lead, and because of the potential
for mixed waste generation if the lead becomes contaminated.  Definitely
avoid lead shot.  If it spills, you'll have a difficult time recovering all
of the shot - it can't be vacuumed up.  I recommend lead blankets, which are
generally made of lead wool, in a form that prevents any lead mobility and
protects the lead from contamination.  The vendor will generally quote the
"lead equivalent" thickness.  Also, be sure that you have a disposal /
recycling plan for when this is no longer needed; eg, an agreement from the
vendor to take it back.  You may even be able to "rent" the shielding, which
is probably the best way to avoid hazardous waste generation.

The opinions expressed are strictly mine.
It's not about dose, it's about trust.

Bill Lipton
liptonw@dteenergy.com


"Frank E. Gallagher, III" wrote:

> Radsafers,
>
> After many years of buying lots of beta shielding, we finally have a
> researcher who needs to purchase lead bricks for gamma shielding (for
> 65Zn).  Can anyone provide contact information on suppliers for lead
> bricks, preferably on the west coast (even better if they are in Southern
> California).  Please forward your information directly to me at
> fegallag@uci.edu rather than the entire list.
>
> Thanks.
>
> Frank E. Gallagher, III, CHP
> Manager, Radiation Protection
> Radiation Safety Officer
> Environmental Health & Safety Office
> 300 UT  ||  UCI Campus  ||  Zot Code 2725
> (949) 824-6904  ||  Fax: (949) 824-8539
> fegallag@uci.edu
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