scholarly journals CASTING OF BLANKET BRICKS, RING, PLUG, AND CONTROL RODS FOR THE EXPERIMENTAL BREEDER REACTOR (CP-4)

1953 ◽  
Author(s):  
R. Macherey
Keyword(s):  

1983 ◽  
Vol 54 (6) ◽  
pp. 389-393
Author(s):  
A. A. Shkurpelov ◽  
V. V. Postnikov ◽  
N. V. Isaev ◽  
V. G. Nazaryan ◽  
Yu. V. Shmonin ◽  
...  


Author(s):  
Haoyang Yu ◽  
Bin Liu ◽  
Wenxin Zhang ◽  
Jin Cai

The minor actinides (MA) is important nuclides in the spent fuel which is bad for human ecological environment. Pressurized water reactor (PWR) is the main reactor type at commercial operation around world. It is important to find the appropriate loading patterns when introducing minor actinides to the PWR core. In this paper, we study the effect of MA transmutation in the PWR on fuel cycle. First, we use the MCNP program to simulate the model of PWR and the effective multiplication factor.Then,the MA is introduced into core in different ways and mass to simulate the effective multiplication factor. In conclusion,without considering chemical skim control and control rods, we change the thickness of the MA, until the keff closes to 1, We find that loading minor actinides to burnable poison rods for transmutation is an optimal minor actinide loading pattern.





2017 ◽  
Vol 131 (3) ◽  
pp. 514-519
Author(s):  
I. Iorga ◽  
R. Deju ◽  
D. Gurau ◽  
M. Mincu


1987 ◽  
Vol 62 (1) ◽  
pp. 20-28
Author(s):  
V. V. Voskoboinikov ◽  
I. Ya. Emel'yanov ◽  
A. F. Lineva ◽  
S. N. Pushkin ◽  
�. L. Semchenko ◽  
...  


1991 ◽  
Vol 94 (3) ◽  
pp. 313-335 ◽  
Author(s):  
David A. Petti ◽  
Zoel R. Martinson ◽  
Richard R. Hobbins ◽  
Daniel J. Osetek


1950 ◽  
Author(s):  
O.D. Seawell


Kerntechnik ◽  
2021 ◽  
Vol 86 (2) ◽  
pp. 173-181
Author(s):  
R. M. Refeat ◽  
H. K. Louis

Abstract Criticality analysis of spent fuel assumes that the fuel material is unburned which means that it is in its most reactive condition. In fact, this is not the real situation for fuel as it is burned during reactor operation causing reduction in the reactivity. Considering the reduction in reactivity during spent fuel calculations is the Burn-up Credit concept (BUC). In addition, the control rods radial and axial positions have an effect on the reactivity which can be considered in the criticality safety analysis. This paper studies the effect of burnup and control rods (CRs) movement on reactivity and isotopes inventory. Calculations are carried out in two phases, first kinf is calculated for different burnup profiles with control rods are either fully withdrawn or fully inserted. In the second phase keff is calculated for different control rods insertion levels. For both phases, burnup calculations are performed for a UO2 assembly then multiplication factor calculations of burned UO2 assemblies in cold state are done. The burnup calculations are performed using MCNP6 code and ENDF/B-VII library for different burnup levels up to 45 GWd/tU. The results obtained can be taken in consideration in criticality safety analysis performed for the spent fuel to improve the economic efficiency for manufacture, storage and transportation of fissile materials.



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