Methodology for accident analyses of fusion breeder blankets

`Fusion for Energy' (F4E) is designing, developing, and implementing the European Helium-Cooled Lead-Lithium (HCLL) and Helium-Cooled Pebble-Bed (HCPB) Test Blanket Systems (TBSs) for ITER (Nuclear Facility INB-174). Safety demonstration is an essential element for the integration of these TBSs into ITER and accident analysis is one of its critical components. A systematic approach to accident analysis has been developed under the F4E contract on TBS safety analyses. F4E technical requirements, together with Amec Foster Wheeler and INL efforts, have resulted in a comprehensive methodology for fusion breeding blanket accident analysis that addresses the specificity of the breeding blanket designs, materials, and phenomena while remaining consistent with the approach already applied to ITER accident analyses. The methodology phases are illustrated in the paper by its application to the EU HCLL TBS using both MELCOR and RELAP5 codes.

[1]  Mikio Enoeda,et al.  Overview of the ITER TBM Program , 2012 .

[2]  David A. Petti,et al.  Modifications to the MELCOR code for application in fusion accident analyses , 2000 .

[3]  Brad J. Merrill,et al.  A recent version of MELCOR for fusion safety applications , 2010 .

[4]  Brad J. Merrill,et al.  Comparison of athena/relap results against ice experimental data , 2002 .

[5]  Brad J. Merrill,et al.  MELCOR Accident Analysis for ARIES-ACT , 2013 .

[6]  Tonio Pinna,et al.  Failure mode and effect analysis for the European test blanket modules , 2008 .

[7]  H. Jahn,et al.  Recent development and validation of physical models in the computer code INTRA , 2000 .

[8]  Jae Sung Yoon,et al.  Scoping Study on In-Vessel LOCA of a Korean TBS in ITER , 2014, IEEE Transactions on Plasma Science.

[9]  Tonio Pinna,et al.  Methodology for reference accidents definition for ITER , 2005 .

[10]  J. P. Van Dorsselaere,et al.  Adaptation of the ASTEC code system to accident scenarios in fusion installations , 2013 .

[12]  David J. Diamond.  Experience Using Phenomena Identification and Ranking Technique (PIRT) for Nuclear Analysis , 2006 .

[13]  Massimiliano Polidori,et al.  CATHARE 2 code validation on HE-FUS3 loop , 2012 .

[14]  Neill Taylor,et al.  Lessons learnt from ITER safety & licensing for DEMO and future nuclear fusion facilities , 2014 .

[15]  I. Ricapito,et al.  Status of the EU test blanket systems safety studies , 2015 .

[16]  Maria Teresa Porfiri,et al.  Modelling of two-phase flow under accidental conditions fusion codes benchmark , 2001 .

[17]  Neil B. Morley,et al.  Normal operation and maintenance safety lessons from the ITER US PbLi test blanket module program for a US FNSF and DEMO , 2014 .

[18]  P. Calderoni,et al.  Progresses and challenges in supporting activities toward a license to operate European TBM systems in ITER , 2014 .

[19]  Susana Reyes,et al.  Safety Analysis of the US Dual Coolant Liquid Lead-Lithium ITER Test Blanket Module , 2006 .

[20]  Brad J. Merrill,et al.  A lithium-air reaction model for the melcor code for analyzing lithium fires in fusion reactors , 2001 .