RE: Activity of Zirconia Sands

["Tsurikov, Nick" <nick.tsurikov@ILUKA.COM>]

Dear Mitch,



I would suggest the paper by BM Hartley "The Measurement of Radiation Levels

in Australian Zircon Milling Plants", Health Physics, Vol.80, No.1, January

2001.  It has - on the second page - typical Th and U content for zircon

sand from various sources.



Kind regards

Nick Tsurikov

Eneabba, Western Australia

http://eneabba.net/ <http://eneabba.net/> 





		-----Original Message-----

		From:	Joan Stovall [mailto:joans@PCEZ.COM]

		Sent:	Saturday, 23 June 2001 9:57

		To:	Mitch Davis

		Cc:	radsafe@list.vanderbilt.edu

		Subject:	Re: Activity of Zirconia Sands



		There was a research paper on the activity of zircon sand

published during

		the late 70's or early 80's in Health Physics.  One of the

authors was Gary

		F. Boothe.  The paper was a result of work by the Oregon

State Health

		Division.



		One word of caution about values for the activity level.

There are wide

		variations in activity level between zircon sand from

different locations.

		There is some zircon sand, from some locations in Eastern

Africa, which is

		of much higher activity than the zircon sand commonly used

as a source for

		zirconium.



		Joan

		----- Original Message -----

		From: "Mitch Davis" <mdavis@normdecon.com>

		To: "Radsafe Post (E-mail)" <radsafe@list.vanderbilt.edu>

		Sent: Friday, June 22, 2001 11:33 AM

		Subject: Activity of Zirconia Sands





		> Good Afternoon:

		>

		> Can anyone point me to a document which might describe the

typical

		activity

		> and nuclide mix found in Zirconia sands.  Thank you in

advance.

		>

		> Mitchell W. Davis, RRPT

		> RSO, NORM Decon Services LLC

		> Midland, TX

		> 915-563-1123

		> mdavis@normdecon.com

		>

		>

		>

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