[ RadSafe ] chemical form of industrial irradiation sources
jdaitken at sugar-land.oilfield.slb.com
Mon Jun 30 13:42:26 CDT 2008
The requirement for most of these sources is that they are designed as "special form" material. Either the material itself will not cause contamination (e.g. Metallic Co60) or, and where the material itself is soluble, they must be encapsulated.
The International standard for sealed sources is ISO2919 (and in the US ANSI N542, which is incorporated into the US regulations e.g. 10CFR39 subpart C). In this standard, performance requirements (to be proved by testing of prototypes) are specified for temperature, Pressure, Impact, vibration and puncture resistance. There are different requirements depending on the use of the sealed source, whether for Industrial radiography, medical use, surface gauges, irradiators or well-logging (downhole) use.
And to ensure the integrity of such sources, periodic leak tests are required, also (e.g. ISO/TR 4826, etc.).
Doug Aitken Cell phone: 713-562-8585
D&M Operations Support
Schlumberger Technology Corporation
300 Schlumberger Drive
Sugar Land TX 77030
Home office: 713-797-0919 Home Fax: 713-797-1757
From: radsafe-bounces at radlab.nl [mailto:radsafe-bounces at radlab.nl] On Behalf Of franz.schoenhofer at chello.at
Sent: Monday, June 30, 2008 12:17 PM
To: radsafe at radlab.nl; Peter Bossew
Cc: Marc De Cort
Subject: Re: [ RadSafe ] chemical form of industrial irradiation sources
............. However the irradiation sources are
a l w a y s encapsulated to make them "umschlossene radioaktive Stoffe" ("encapsulated radioactive material"). There exist international and also Austrian Standards for periodic testing of tightness of the cladding.
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