STACY Code and its Application to the HTR-Module and HTTR

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I-131 Release Rate of a Tracer Pebble core pass 1 2 3 4 5 1 2 3 4 5 1.8 3.0E-12 30 Relative iod dine-131 inve entory 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 [mol/s] release rate Iodine 131 2.5E-12 2.0E-12 1.5E-12 1.0E-12 5.0E-13 0.0 0 100 200 300 0.0E+00 0 100 200 300 Irradiation time [EFPD] Irradiation time [EFPD] Inventory, Q = var., TNT Inventory, Q = const Rel. Rate = f(t), 15x inner, Q = var., TNT Rel. Rate = f(t), 15x inner, Q = const A. Xhonneux Technical Meeting on Re-evaluation of Maximum Operating Temperatures and Accident Conditions for 14 HTR Fuel and Structural Materials, Vienna,10-12 June 2013
Overview • Overview of Fission Product Codes at FZJ • Introduction to STACY • Exemplary results for HTR-Module • Exemplary results for HTTR • Summary and outlook A. Xhonneux Technical Meeting on Re-evaluation of Maximum Operating Temperatures and Accident Conditions for 15 HTR Fuel and Structural Materials, Vienna,10-12 June 2013
Page 1 and 2: meinschaft Mitglied der Helmholtz-G
Page 3 and 4: Overview • Overview of Fission Pr
Page 5 and 6: Former Approach for FP Release Calc
Page 7 and 8: Main Principles of STACY • Calcul
Page 9 and 10: Former Fuel Shuffling Scheme in VSO
Page 11 and 12: Screenshot of Tracer Pebbles within
Page 13: I-131 Inventory of a Tracer Pebble
Page 17 and 18: Interatom Safety Analysis of HTR-Mo
Page 19 and 20: Fission Product Release Fractions d
Page 21 and 22: Comparison of STACY and Interatom R
Page 23 and 24: Influence of Core Pass Number on Cs
Page 25 and 26: Fission product release calculation
Page 27 and 28: Cesium-137 release rates after 660
Page 29 and 30: Overview • Overview of Fission Pr
Page 31 and 32: Outlook • Fission product release
Page 33 and 34: Calculated reactivity values by usi

STACY Code and its Application to the HTR-Module and HTTR

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