Gubitak hladioca iz bazena za istrošeno gorivo NE Krško

master's thesis

• Title (english): Loss of Coolant from NPP Krsko Spent Fuel Pool
• Author: Dario Vrbanec
• Mentor: Davor Grgić (mentor)
• Committee member: Davor Grgić (predsjednik povjerenstva)
• Committee member: Nikola Čavlina (član povjerenstva)
• Committee member: Siniša Šadek (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2016-07-13, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Poslije terorističkih napada u SAD i poslije nesreće u NE Fukushima počele su se razmatrati mogućnosti dugotrajnog gubitka hlađenja i velikih gubitaka hladioca s posljedičnim otkrivanjem goriva, oksidacijom košuljice, proizvodnjom vodika i u konačnici taljenjem i relokacijom goriva praćeni oslobađanjem velike količine plinovitog radioaktivnog materijala. Nakon završetka ciklusa rada elektrane iz reaktora se vade istrošeni gorivni elementi i pohranjuju u bazen za istrošeno gorivo. Istrošeno gorivo generira ostatnu toplinu i prirodnom se cirkulacijom vode, koju u bazen dovodi vanjski rashladni sustav, hladi bazen. Pomoću programa MELCOR snimljeni su odzivi za slučaj gubitka rashladnog sustava i opadanje razine vode u NE Krško. Bazen je realiziran jednostavnim hidrauličkim komponentama čije su dimenzije unaprijed određene.

Abstract (english)

After the terrorist attacks in the United States and after the accident at NPP Fukushima, began the consideration of possibility of long-term loss of cooling and large losses of coolant with subsequent fuel uncovering, clad oxidation, hydrogen production and ultimately fuel melting and relocation followed by releasing large amounts of gaseous radioactive material. After completion of power plant work cycle, spent fuel elements are removed from the reactor and stored in the spent fuel pool. Spent fuel generates residual heat and uses natural circulation of water and external cooling system for cooling down the pool. Using MELCOR software, water and fuel heat-up in case of loss of the cooling system and the decline of the water level in the Krško NPP were calculated. The pool is realized by simple hydraulic components whose dimensions are predetermined.

• Keywords: Bazen za istrošeno gorivo; NE Krško; MELCOR; ostatna toplina; gubitak hlađenja
• Keywords (english): Spent fuel pool; NPP Krško; MELCOR; decay heat; lopss of cooling
• Language: croatian
• URN:NBN: urn:nbn:hr:168:835972
• Study programme: Title: Electrical Engineering and Information Technology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka elektrotehnike i informacijske tehnologije (magistar/magistra inženjer/inženjerka elektrotehnike i informacijske tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2018-02-06 14:23:48