[ RadSafe ] Cl-36 in Graphite wastes ??

[John R Johnson]

Jaro

It must be from neutrons on stable Cl-35. Chlorine has 2 stable isotopes, 
Cl-35 (~75%) and Cl-37 (~25%). All of the Cl-36 (halflife ~ 40000years) 
produced will still be there.

John
***************
John R Johnson, PhD
CEO, IDIAS, Inc.
4535 West 9th Ave
604-676-3556
Vancouver, B. C.
V6R 2E2, Canada
idias at interchange.ubc.ca

----- Original Message ----- 
From: "Franta, Jaroslav" <frantaj at aecl.ca>
To: "Radsafe (E-mail)" <radsafe at radlab.nl>
Sent: Thursday, July 31, 2008 8:14 AM
Subject: [ RadSafe ] Cl-36 in Graphite wastes ??


Anyone here know the origin of Cl-36 in graphite wastes from old 
(decommissioned) graphite-moderated reactors ?
Reportedly, the graphite contains an activity of roughly 1 MBq/kg from 
Cl-36.

Thanks in advance.

Jaro
^^^^^^^^^^^^^^^^^^^^

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