Developing of a supporting program for operator of research nuclear reactor

2019 ◽  
Author(s):  
N. A. Vasyutin ◽  
V. Yu. Litovchenko ◽  
O. L. Tashlykov
Keyword(s):  
Nuclear Reactor ◽  
Research Nuclear Reactor

Some problems of the economics of a research nuclear reactor

1975 ◽  
Vol 39 (1) ◽  
pp. 579-582
Author(s):  
V. I. Zelenov ◽  
S. G. Karpechko ◽  
A. D. Nikiforov
Keyword(s):  
Nuclear Reactor ◽  
Research Nuclear Reactor

scholarly journals Probing neutron-hidden neutron transitions with the MURMUR experiment

2021 ◽  
Vol 81 (1) ◽  
Author(s):  
Coraline Stasser ◽  
Guy Terwagne ◽  
Jacob Lamblin ◽  
Olivier Méplan ◽  
Guillaume Pignol ◽  
...  
Keyword(s):  
Nuclear Reactor ◽  
Low Noise ◽  
Weakly Interact ◽  
Nuclear Core ◽  
Noise Measurements ◽  
Research Nuclear Reactor ◽  
Better Than ◽  
Mirror Matter

AbstractMURMUR is a new passing-through-walls neutron experiment designed to constrain neutron-hidden neutron transitions allowed in the context of braneworld scenarios or mirror matter models. A nuclear reactor can act as a source of hidden neutrons, such that neutrons travel through a hidden world or sector. Hidden neutrons can propagate out of the nuclear core and far beyond the biological shielding. However, hidden neutrons can weakly interact with usual matter, making possible for their detection in the context of low-noise measurements. In the present work, the novelty rests on a better background discrimination and the use of a mass of a material – here lead – able to enhance regeneration of hidden neutrons into visible ones to improve detection. The input of this new setup is studied using both modelizations and experiments, thanks to tests currently performed with the experiment at the BR2 research nuclear reactor (SCK$$\cdot $$ · CEN, Mol, Belgium). A new limit on the neutron swapping probability p has been derived thanks to the measurements taken during the BR2 Cycle 02/2019A: $$p<4.0\times 10^{-10} \; \text {at 95}\%\text { CL}$$ p < 4.0 × 10 - 10 at 95 % CL . This constraint is better than the bound from the previous passing-through-wall neutron experiment made at ILL in 2015, despite BR2 is less efficient to generate hidden neutrons by a factor of 7.4, thus raising the interest of such experiment using regenerating materials.

scholarly journals Analysis of Modern Radioecological State in WWR-M Research Nuclear Reactor Zone of the Institute for Nuclear Research NAS of Ukraine

2020 ◽  
Vol 17 (2) ◽  
pp. 102-106
Author(s):  
O. V. Haidar ◽  
◽  
I. O. Pavlenko ◽  
O. V. Sviatun ◽  
O. V. Svarychevska ◽  
...  
Keyword(s):  
Nuclear Reactor ◽  
Nuclear Research ◽  
Research Nuclear Reactor ◽  
Reactor Zone

Autonomy, even Regional Hegemony: Argentina and the “Hard Way” toward Its First Research Reactor (1945–1958)

2005 ◽  
Vol 18 (2) ◽  
pp. 285-308 ◽  
Author(s):  
Diego Hurtado de Mendoza
Keyword(s):  
Nuclear Reactor ◽  
Atomic Energy Commission ◽  
Atomic Energy ◽  
The Political ◽  
Institutional Conditions ◽  
Nuclear Development ◽  
Research Nuclear Reactor ◽  
And Control ◽  
The Military ◽  
The Relationship

In the mid-1940s, Argentina was partially isolated and ruled by a military regime. The political confrontation between the military and the scientific community as well as international pressures played a major role in the failure of the first attempts to cope with nuclear development. Only after the relationship between the military and local scientists was readjusted and control of atomic energy was placed in the hands of the Navy, and Argentina's international relations restored, did nuclear development begin to take off. This paper examines the traumatic process of creating the political and institutional conditions for the reception of nuclear technology in a peripheral context. The key to shaping future policies was the decision made by Argentina's Atomic Energy Commission in April 1957 to construct its first research nuclear reactor instead of buying it as other countries such as Spain and Brazil were doing at the time.

scholarly journals The Local Seismoacoustic Wavefield of a Research Nuclear Reactor and Its Response to Reactor Power Level

2020 ◽  
Vol 92 (1) ◽  
pp. 378-387
Author(s):  
Omar E. Marcillo ◽  
Monica Maceira ◽  
Chengping Chai ◽  
Christine Gammans ◽  
Riley Hunley ◽  
...  
Keyword(s):  
Energy Transport ◽  
Nuclear Reactor ◽  
Power Level ◽  
National Laboratory ◽  
Reactor Power ◽  
Operational Conditions ◽  
Oak Ridge ◽  
Research Nuclear Reactor ◽  
Full Power ◽  
Power Operation

Abstract We describe the seismoacoustic wavefield recorded outdoors but inside the facility fence of the High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory (Tennessee). HFIR is a research nuclear reactor that generates neutrons for scattering, irradiation research, and isotope production. This reactor operates at a nominal power of 85 MW, with a full-power period between 24 and 26 days. This study uses data from a single seismoacoustic station that operated for 60 days and sampled a full operating reactor cycle, that is, full-power operation and end-of-cycle outage. The analysis presented here is based on identifying signals that characterize the steady, that is, full-power operation and end-of-cycle outage, and transitional, that is, start-up and shutdown, states of the reactor. We found that the overall seismoacoustic energy closely follows the main power cycle of the reactor and identified spectral regions excited by specific reactor operational conditions. In particular, we identified a tonal noise sequence with a fundamental frequency around 21.4 Hz and multiple harmonics that emerge as the reactor reaches 90% of nominal power in both seismic and acoustic channels. We also utilized temperature measurements from the monitoring system of the reactor to suggest links between the operation of reactor’s subsystems and seismoacoustic signals. We demonstrate that seismoacoustic monitoring of an industrial facility can identify and track some industrial processes and detect events related to operations that involve energy transport.

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