The Environmental Radioactivity Comparison 2007 was the thirteenth in a series of similar exercises to have been conducted by NPL.

The timetable for the exercise was as follows:

Samples ready for dispatch	March 2007
Deadline for submission of results	16 June 2007
Post-comparison workshop	19 September 2007
Report issued (available to download in pdf format)	April 2008

The Environmental Workshop took place at NPL on 19th September 2007. The following presentations were given during the workshop (available to download in pdf format):

• Source preparation and validation – Chris Gilligan
• Presentation of Beta Results BL & BH – Arvic Harms
• Presentation of Alpha Results AL & AH – Chris Gilligan
• Presentation of Beta Two Results B2 – Chris Gilligan
• Presentation of Concrete Results C – Arvic Harms
• Presentation of Gamma Results GL & GH – Arvic Harms
• Discussion of the Next Comparison - Arvic Harms
• Measurement Services from NPL - Chris Gilligan
• Summary of PTE 2007 - Arvic Harms
• Procorad 2008 - Simon Jerome
• Tritium in Concrete - Simon Jerome

Back to NPL Environmental Radioactivity Comparison Exercises