Volume 3, Issue 1 (January 2006)
Sampling and Analysis of Beryllium at JET: Policy Cost and Impact
This paper describes the sampling and analysis of beryllium at the Joint European Torus (JET) fusion facility. The current policy requiring 100% personal air sampling (PAS) and taking many surface contamination smears generates 40 000 samples per year. Sample processing, analysis, and the quality assurance (QA) program are described. Costs are summarized to derive a cost per 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 h can be routinely achieved for large numbers of samples.