Criticality safety assessments require sensitivity analyses which can be quite tedious if preformed manually. In order to reduce manual work and facilitate sensitivity studies, a calculation package has been set up. The package is built around MCNP which is used for the criticality calculations. The package consists of a data transfer and analysis program written in perl, and a set of skeletal inputs, called here models, for the fuel transport and storage systems including the fuel assembly. The models contain all the details for the assembly and the storage system. Some values in the models are replaced by keywords for the parameter. Values for the keywords are given in the input of the package and the keywords in the models are replaced by the appropriate value in the actual inputs for the MCNP runs. The package gives an easy and time-saving way to make a lot of criticality calculations with only small modifications to the inputs. Currently the models cover the transport and storage systems of Loviisa NPP. In principal, the package could be used to analyze any transport or storage system as long as a model for the specific system is constructed. In this paper, the usability is demonstrated with two different storage systems.
|Title of host publication||Proceedings|
|Subtitle of host publication||Topical Meeting held by the ANS Nuclear Criticality Safety Division NCSD 2013. Criticality Safety in the Modern Era: Raising the Bar|
|Place of Publication||LaGrange Park, IL|
|Publisher||American Nuclear Society ANS|
|Number of pages||9|
|Publication status||Published - 2013|
|MoE publication type||Not Eligible|
|Event||NCSD 2013 Criticality Safety in the Modern Era: Raising the Bar - Wilmington, NC, United States|
Duration: 29 Sep 2013 → 3 Oct 2013
|Conference||NCSD 2013 Criticality Safety in the Modern Era: Raising the Bar|
|Abbreviated title||NCSD 2013|
|Period||29/09/13 → 3/10/13|
- criticality analysis
- fuel storage
Rantamäki, K. (2013). Criticality Safety Calculation Package for Fuel Transport and Storage Systems. In Proceedings: Topical Meeting held by the ANS Nuclear Criticality Safety Division NCSD 2013. Criticality Safety in the Modern Era: Raising the Bar American Nuclear Society ANS.