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description Publicationkeyboard_double_arrow_right Article , Journal 2014Publisher:Elsevier BV Juraj Šimko; Martin Petriska; Ján Haščík; Jakub Lüley; Branislav Vrban; Gabriel Farkas; R. Hinca; Vladimír Slugeň;Abstract Due to the planned first criticality start-up of the Nuclear Power Plant (NPP) Mochovce units 3 and 4 in the near future, detailed analyses of core parameters are required to support safe operation of the nuclear facility. Since the previous calculations were performed by the deterministic nuclear codes, the stochastic approach was used to produce the independent results. The paper introduces determination of temperature feedback reactivity coefficients, especially summary (isothermal) and moderator (density) reactivity coefficients between 200 °C and 260 °C with step of 2 °C. The evaluation of the critical boron acid (H 3 BO 3 ) concentrations for different positions of the 6th control assembly group was performed for the given coolant temperatures as a precondition of the thermal coefficients calculation. All calculations were performed by computational code MCNP5 1.60 supported by NJOY99.364 microscopic cross sections processing system and our control scripts. For the validation of the criticality calculations (critical boron acid concentration), the experimental data based on the first critical conditions of the NPP Mochovce 2 start-up were used.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.anucene.2013.08.030&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu3 citations 3 popularity Average influence Top 10% impulse Average Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.anucene.2013.08.030&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2013Publisher:Elsevier BV J. Veterníková; Vladimír Slugeň; H. Hein; R. Hinca; Martin Petriska; V. Sabelová; W Egger; Stanislav Sojak; Milan Pavúk;Abstract This paper presents a comparison of commercially used German and Russian reactor pressure vessel steels from the positron annihilation spectroscopy (PAS) point of view, having in mind knowledge obtained also from other techniques from the last decades. The second generations of Russian RPV steels seems to be fully comparable with German steels and their quality enables prolongation of NPP operating lifetime over projected 40 years. The embrittlement of CrMoV steel is very low due to the dynamic recovery of radiation-induced defects at reactor operating temperatures.
Progress in Nuclear ... arrow_drop_down Progress in Nuclear EnergyArticle . 2013 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.pnucene.2012.08.002&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu4 citations 4 popularity Average influence Top 10% impulse Average Powered by BIP!
more_vert Progress in Nuclear ... arrow_drop_down Progress in Nuclear EnergyArticle . 2013 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.pnucene.2012.08.002&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu
description Publicationkeyboard_double_arrow_right Article , Journal 2014Publisher:Elsevier BV Juraj Šimko; Martin Petriska; Ján Haščík; Jakub Lüley; Branislav Vrban; Gabriel Farkas; R. Hinca; Vladimír Slugeň;Abstract Due to the planned first criticality start-up of the Nuclear Power Plant (NPP) Mochovce units 3 and 4 in the near future, detailed analyses of core parameters are required to support safe operation of the nuclear facility. Since the previous calculations were performed by the deterministic nuclear codes, the stochastic approach was used to produce the independent results. The paper introduces determination of temperature feedback reactivity coefficients, especially summary (isothermal) and moderator (density) reactivity coefficients between 200 °C and 260 °C with step of 2 °C. The evaluation of the critical boron acid (H 3 BO 3 ) concentrations for different positions of the 6th control assembly group was performed for the given coolant temperatures as a precondition of the thermal coefficients calculation. All calculations were performed by computational code MCNP5 1.60 supported by NJOY99.364 microscopic cross sections processing system and our control scripts. For the validation of the criticality calculations (critical boron acid concentration), the experimental data based on the first critical conditions of the NPP Mochovce 2 start-up were used.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.anucene.2013.08.030&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu3 citations 3 popularity Average influence Top 10% impulse Average Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.anucene.2013.08.030&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2013Publisher:Elsevier BV J. Veterníková; Vladimír Slugeň; H. Hein; R. Hinca; Martin Petriska; V. Sabelová; W Egger; Stanislav Sojak; Milan Pavúk;Abstract This paper presents a comparison of commercially used German and Russian reactor pressure vessel steels from the positron annihilation spectroscopy (PAS) point of view, having in mind knowledge obtained also from other techniques from the last decades. The second generations of Russian RPV steels seems to be fully comparable with German steels and their quality enables prolongation of NPP operating lifetime over projected 40 years. The embrittlement of CrMoV steel is very low due to the dynamic recovery of radiation-induced defects at reactor operating temperatures.
Progress in Nuclear ... arrow_drop_down Progress in Nuclear EnergyArticle . 2013 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.pnucene.2012.08.002&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu4 citations 4 popularity Average influence Top 10% impulse Average Powered by BIP!
more_vert Progress in Nuclear ... arrow_drop_down Progress in Nuclear EnergyArticle . 2013 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.pnucene.2012.08.002&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu