Measurement of VVÉR Control Rod Efficiency

Tsyganov, S. V.; Shishkov, L.K.

doi:10.1023/b:aten.0000030916.11152.e6

Cited by 10 publications

(2 citation statements)

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“…Gamma irradiation provides suitable methods for genetic changes to increase genetic diversity [35,36], phenotypic and genotypic characteristics and resistance to plant pest and disease [37][38][39][40]. Genetic diversity determines the importance of obtaining the desired genotypes of plants.…”

Section: Introductionmentioning

confidence: 99%

Characterization of gamma ray induced mutations in PepYLCV-infecting local pepper in Karo Regency, Sumatra Utara, Indonesia

Tarigan

Hanafiah²,

Sinuraya³

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Plant mutation breeding plays a pivotal role in increasing plant genetic variability, pest and disease resistance and yield production. Gamma ray irradiation induced to infected plants to obtain resistant mutant plants. This research aims to examine the morphological characterization of pepper plants and the mutant plants produced from irradiated PepYLCV-infecting local pepper from Karo Regency, Sumatra Utara, Indonesia. The research was conducted in January to October 2021 in farming land in Tongkoh Village, Dolat Rayat District, Karo Regency, Sumatra Utara, using non-Factorial Randomized Block Design. The mutation was induced by exposing the seeds of local chili to varied doses (D): 0 (uninfected seeds and unirradiated infected seeds), 150, 200 and 250 Gy and was performed using T-Test, replicated 3 times. The results of research showed that different doses of gamma rays significantly affected the mutant plants from the observation on its plant height, stem diameter, canopy and fruit lengths, fruit weight, number of branches, leaves and fruits. Plant induced with gamma ray 150 Gy found to have the longest canopy and fruit and also demonstrated the highest number of branches, flowers, leaves and the highest fruit weight compared to other higher doses. The exposure of gamma irradiation gave positive effect to infected chili to enhance their resistance in order to produce higher yield.

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Section: Introductionmentioning

confidence: 99%

Characterization of gamma ray induced mutations in PepYLCV-infecting local pepper in Karo Regency, Sumatra Utara, Indonesia

Tarigan

Hanafiah²,

Sinuraya³

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…However, it has already been proved in [1] and then in [2][3][4][5] that this way of measuring the reactivity for a VVER, generally speaking, is inapplicable and the data obtained with its help may contain substantial errors.…”

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confidence: 99%

On formation of the asymptotic spectrum of delayed neutron emitters in measuring the VVER-1000 scram system effectiveness

Shishkov

Zizin

2014

Phys. Atom. Nuclei

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The process of formation of an asymptotic distribution of the neutron flux density in the reactor systems after introducing different negative reactivities is considered. The impact of two factors after the reac tivity introduction is evaluated: (1) nonuniformity of perturbation of core properties, on one hand, and (2) a sharp reduction in the density of prompt neutrons, which prevents the appearance of new delayed neutron emitters distributed in accordance with the "new" prompt neutron distribution, on the other hand. The results of calculations show that the errors of measuring the scram system effectiveness using the method of inverse solution of the kinetics equation are caused by the fact that, after the negative reactivity insertion, the sources of prompt and delayed neutrons have different spatial distributions. In the case of high negative reac tivities, this difference remains while the system still has neutrons, which can be measured.

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Spatial Effect as a Consequence of a Mismatch between the Detector Signal and the Averaged Neutron Flux Density

Vinogorov

2013

At Energy

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The transient processes induced in a water-moderated and -cooled reactor by prolonged (several seconds) insertion of absorbing rods into the reactor are analyzed using experimental and computational data. The change in the neutron flux density in core regions, forming the detector signal, during the motion of the rods, and the subsequent change in the distribution of delayed-neutron sources are examined. The spatial effect of the reactivity is determined from the coefficient of nonuniformity of the neutron flux density. The conditions under which regression analysis can be used to determine the efficiency of the rods are discussed.

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Measurement of VVÉR Control Rod Efficiency

Cited by 10 publications

References 0 publications

Characterization of gamma ray induced mutations in PepYLCV-infecting local pepper in Karo Regency, Sumatra Utara, Indonesia

Characterization of gamma ray induced mutations in PepYLCV-infecting local pepper in Karo Regency, Sumatra Utara, Indonesia

On formation of the asymptotic spectrum of delayed neutron emitters in measuring the VVER-1000 scram system effectiveness

Spatial Effect as a Consequence of a Mismatch between the Detector Signal and the Averaged Neutron Flux Density

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