Nuclear energy - Nuclear fuel technology-Waste - Tritium releasing assay in tritiated waste packages by ionization chamber

1 Domaine d'application 4

2 Références normatives 4

3 Termes et définitions 4

4 Principe de la méthode 5

5 Appareillage 5

6 Précautions préalables 7

6.1 Sécurité 7

6.2 Environnement de l'appareillage de mesure 7

6.3 Contamination des colis contrôlés 7

6.4 Optimisation du débit d'air de balayage et du temps de confinement 7

7 Vérification du bon fonctionnement de la chaîne de mesure 7

7.1 Objectif 7

7.2 Description du montage 7

7.3 Mode opératoire de vérification du bon fonctionnement 8

8 Mode opératoire pour la mesure du dégazage d'un colis 8

9 Expression des résultats 9

9.1 Approche théorique 9

9.2 Approche pratique 10

9.3 Seuil de décision (SD) - Limite de détection (LD) 10

9.4 Incertitude de mesure Uc 10

10 Procès-verbal de mesure 10

Bibliographie 12

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