[ RadSafe ] Kr-85

[Marcel Schouwenburg]

Khalid,

I do not know the amount you are referring to, but Kr-85 may have some commercial value.

Despite its very low gamma-yield (0.4% for 514 keV), this compound is sometimes used as an industrial gamma-tracer for gas flow. Dependent on the actual process to be studied, ~ TBq's required in small volume (ampoule or small gas bottle).

Furthermore, Kr-85 can also be used as an oil/gas-field radiotracer (producing and injection wells should be connected). Gas samples from a producing well are analysed on beta-decay by sensitive counters. Amount dependent on reservoir parameters, butl also close to TBq's (ampoule or small gas bottle).

I guess there may be commercial radiotracing firms (interested in your Kr-85) active in Saudi Arabia. In such a case, Kr-85 is applied useful before 'ultimate disposal'.

Kind regards,
Gert Jonkers (GSEA/4)
Nuclear Measurement Technique Services
at Shell Research & Technology Centre, Amsterdam
tel. +31 (0)20 630 3424
fax +31 (0)20 630 2911
e-mail Gert.Jonkers at Shell.com
http://www.srtca.shell.com/tis/ASA/Nuclear/index.html

-----Original Message-----
From: radsafe-bounces at radlab.nl [mailto:radsafe-bounces at radlab.nl]On
Behalf Of Khalid Aleissa
Sent: donderdag 22 september 2005 18:12
To: Radsafe List
Subject: [ RadSafe ] Kr-85


I am intrested in others experince (procedures and rules) in disposing Kr-85
gas.
Please provide me with your knowledge or/and epxerince in this matter.

Thnaks

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