scholarly journals Nuclear Material Accounting and Reporting Information Systems: Capabilities Review

2014 ◽  
Author(s):  
Kimberly V Gilligan ◽  
John A Oakberg
Keyword(s):  
Information Systems ◽  
Nuclear Material ◽  
Material Accounting

scholarly journals Revisiting Statistical Aspects of Nuclear Material Accounting

2013 ◽  
Vol 2013 ◽  
pp. 1-15 ◽  
Author(s):  
T. Burr ◽  
M. S. Hamada
Keyword(s):  
Process Monitoring ◽  
Measurement Errors ◽  
Nuclear Material ◽  
Data Driven ◽  
Testing Period ◽  
The Difference ◽  
One Year ◽  
The Impact ◽  
Material Accounting

Nuclear material accounting (NMA) is the only safeguards system whose benefits are routinely quantified. Process monitoring (PM) is another safeguards system that is increasingly used, and one challenge is how to quantify its benefit. This paper considers PM in the role of enabling frequent NMA, which is referred to as near-real-time accounting (NRTA). We quantify NRTA benefits using period-driven and data-driven testing. Period-driven testing makes a decision to alarm or not at fixed periods. Data-driven testing decides as the data arrives whether to alarm or continue testing. The difference between period-driven and datad-riven viewpoints is illustrated by using one-year and two-year periods. For both one-year and two-year periods, period-driven NMA using once-per-year cumulative material unaccounted for (CUMUF) testing is compared to more frequent Shewhart and joint sequential cusum testing using either MUF or standardized, independently transformed MUF (SITMUF) data. We show that the data-driven viewpoint is appropriate for NRTA and that it can be used to compare safeguards effectiveness. In addition to providing period-driven and data-driven viewpoints, new features include assessing the impact of uncertainty in the estimated covariance matrix of the MUF sequence and the impact of both random and systematic measurement errors.

Analysis of A Nuclear Material Accounting Uncertainty for ACP Spent Fuel Standards: MCNPX and ORIGEN-S Code Simulations

2008 ◽  
Vol 45 (sup5) ◽  
pp. 410-413
Author(s):  
Tae-hoon Lee ◽  
June-sik Joo ◽  
Kwang-june Park ◽  
Hee-sung Shin ◽  
Ho-dong Kim
Keyword(s):  
Nuclear Material ◽  
Spent Fuel ◽  
Material Accounting

scholarly journals MUF Calculation of Indonesian 10-MWt RDE Experimental HTGR Using Combined Uncertainty Approach

2021 ◽  
Vol 2048 (1) ◽  
pp. 012039
Author(s):  
Arief S. Adhi ◽  
Mohamad S.F. Husein ◽  
Pertiwi D. Winastri
Keyword(s):  
Nuclear Material ◽  
Total Uncertainty ◽  
Comprehensive Data ◽  
Nuclear Explosive ◽  
Combined Uncertainty ◽  
Explosive Device ◽  
Approximate Amount ◽  
Material Accounting

Abstract A safeguards assessment for the 10-MWt RDE Experimental HTGR needs to be established in order to fulfill the requirements needed to construct it. Methods and instruments used for the RDE’s nuclear material accounting and safeguards system are reviewed in this paper. Material unaccounted for (MUF) is calculated using the uncertainty of each method and instrument. The effectiveness of the safeguards system is examined by comparing the resulting MUF with the number of SQ ( = significant quantity, i.e. the approximate amount of nuclear material for which the possibility of manufacturing of a nuclear explosive device cannot be excluded). The total uncertainty from each KMP showed a number less than 10%. The number of MUF in each KMP according to total uncertainty showed a number below 1 kg of U-235 in one inventory period (~12 months). According to the number of MUF counted, it is impossible to reach 1 SQ if the diversion done is only by taking the advantage of MUF in the measurement. The result of total uncertainty and MUF calculation showed that the safeguards system and the material measurement designed for RDE is amendable. The sets of instruments and measurements designed will give a comprehensive data of each nuclear material in the RDE. The low number of MUF in comparison with the SQ showed that the RDE has a high proliferation resistance.

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