Ispuštanje i transport radionuklida u zaštitnoj zgradi nuklearne elektrane

undergraduate thesis

• Title (english): Release and transport of radionuclides in the containment building of the nuclear power plant
• Author: Filip Jakšić
• Mentor: Siniša Šadek (mentor)
• Committee member: Siniša Šadek (predsjednik povjerenstva)
• Committee member: Krešimir Trontl (član povjerenstva)
• Committee member: Štefica Vlahović (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2019-09-10, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Tijekom procesa fisije u jezgri se nuklearnog reaktora proizvode radioaktivni fisijski produkti. Prioritet je nuklearne sigurnosti zaštiti integritet jezgre i zadržati fisijske produkte unutar goriva, odnosno obloge gorivnih elemenata. Narušavanje početne geometrije jezgre, u slučaju gubitka hlađenja, uzrokovat će bijeg radionuklida iz reaktora i njihovo akumuliranje u zaštitnoj zgradi. Ta je zgrada posljednja barijera prije ispusta u okolicu, stoga je nužno proučiti procese ispuštanja, transporta i akumulacije radionuklida u slobodnim volumenima i strukturama kontejnmenta. Fisijski se produkti dijele najčešće u tri grupe: plinovite, lako hlapljive i teško hlapljive. Dodatno će dio njih biti ispušten u originalnoj formi, a dio u obliku aerosola. U ovom radu objašnjeni su fizikalni i kemijski procesi koji se zbivaju kod ispuštanja i transporta radionuklida, matematički model ispuštanja te analiza podatak Za proračun korišten je integralni program MELCOR koji sadrži modele potrebne za ovakvu vrstu analize.

Abstract (english)

During the process of fission, the core of nuclear reactor produces radioactive fission products. The nuclear safety priority is to protect the core integrity and to keep the fission products inside the fuel. Disruption of the cor geometry in case of cooling loss will cause the radionuclide to escape from the reactor and accumulate in the containment building. This building is the last barrier before it is discharged into the surrounding area, so it is necessary to study the processes of release, transport and accumulation of radionuclides in free volumes and container structures. Physical products are most commonly divided into three groups: gaseous, easily volatile and volatile. In addition, part of them will be released in the original form and part in the form of aerosols. This paper explains the physical and chemical processes that occur during release and transport of the radionuclides, the mathematical model and the analysis data. The calculation is based on an integral MELCOR program that contains the models required for this type of analysis.

• Keywords: Radionuklidi; Nuklearna elektrana; Krško; RN paket; Melcor
• Keywords (english): Radionuclides; Nuclear power plant; Krško; RN package; Melcor
• Language: croatian
• URN:NBN: urn:nbn:hr:168:540103
• Study programme: Title: Electrical Engineering and Information Technology; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike i informacijske tehnologije (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike i informacijske tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2020-01-07 18:36:11