EFDA-JET-PR(05)15

Sampling and Analysis for Beryllium at JET: Policy Cost and Impact

This paper describes the sampling and analysis for beryllium at the JET fusion facility. The current policy requiring 100% Personal Air Sampling (PAS) and taking many surface contamination smears generates 40,000 samples/year. Sample processing, analysis and the QA program are described. Costs are summarized to derive a cost/sample of ≈ £4.2($8). This is economical but as 99.8% of PAS measurements are <2μg/m3 and the aggregated costs are high reviewing the policy is justified. The disadvantages of the present strategy, the options for a change of policy and the role that an accredited real-time analysis instrument could play are discussed. Retrospective analysis affects the machine operating time; a quicker technique would have a significant impact on improving experimental time. The project's experience is that turnaround times of 2-6 hours can be routinely achieved for large numbers of samples.
Name Size  
EFDP05015 815.95 Kb