Termičko-hidro-mehanički efekti na stijeni odlagališta iskorištenog nuklearnog goriva

master's thesis

• Title: Termičko-hidro-mehanički efekti na stijeni odlagališta iskorištenog nuklearnog goriva : diplomski rad
• Title (english): Thermo-hydro-mechanical effects in host rock for spent nuclear fuel repositories : master's thesis
• Author: Galla Uroić
• Mentor: Želimir Veinović (mentor)
• Mentor: Marija Macenić (pomoć pri izradi, neposredni voditelj)
• Committee member: Želimir Veinović (predsjednik povjerenstva)
• Committee member: Željko Andreić (član povjerenstva)
• Committee member: Dubravko Domitrović (član povjerenstva)
• Committee member: Tomislav Korman (član povjerenstva)
• Committee member: Tomislav Kurevija (član povjerenstva)
• Granter: University of Zagreb; Faculty of Mining, Geology and Petroleum Engineering; (Department of Mining and Geotechnical Engineering); Zagreb
• Defense date and country: 2019-07-05, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mining, Petroleum and Geology Engineering; Mining

Abstract

Odlukom Vlade Republike Hrvatske (124. sjednica 9.11.2018) o donošenju Nacionalnog programa provedbe
Strategije zbrinjavanja radioaktivnog otpada, iskorištenih izvora i istrošenog nuklearnog goriva, problem
zbrinjavanja radioaktivnog otpada u Hrvatskoj postaje aktualan. Slovensko-hrvatsko Suvlasništvo nad
Nuklearnom elektranom Krško (NEK) znači da polovina pogonskog i dekomisijskog otpada te istrošenog
nuklearnog goriva (ING) pripada Hrvatskoj. Hrvatski program zbrinjavanja nisko i srednje radioaktivnog
otpada polako napreduje, ali ING se i dalje čuva u bazenu NEK, a predviđeno je i suho skladištenje do trenutka
odlaganja. U svijetu jedino Finska ima građevinsku dozvolu za odlaganje ING-a. Republika Slovenija je
izradila generički projekt odlagališta ING koji je već prošao drugu reviziju i recenziju. Projektna ideja uključuje
traženje lokacije na teritoriju obje države te konceptualno rješenje tipa SKB-3V u kristaliničnoj stijeni. U radu
je dana procjena termičko-hidro-mehaničkih efekata (THME) odlagališta ING-a u kristaliničnoj stijeni
(granodiorit) SKB-3V koncepta izradom numeričkog modela u programima SIGMA/W, SEEP/W i TEMP/W.
Za usporedbu, procijenjeni su i THME u istim programima za Koncept-4 (odlaganje aksijalno u tunelu).
Simulacijama je dokazano kako je moguće izraditi odlagalište ING-a u kristaliničnim stijenama Hrvatske ili
Slovenije, da je generički projekt odlagališta dobro dizajniran te da se može izraditi model hidro-termomehaničkih
efekata istrošenog nuklearnog goriva na stijenu u Hrvatskoj/Sloveniji koji dokazuje podobnost
stijenske mase za ovu svrhu. Dokazano je kako je primjena Koncepta-4 također moguća, ako ne i poželjnija.
Izrađen je kvalitativni model ponašanja potencijalne stijene i funkcionalnosti odabranog koncepta odlaganja
ING-a i time je dokazano kako u Hrvatskoj postoje kapaciteti za izradu projekata i studija funkcionalnosti i
sigurnosti budućeg odlagališta ING-a.

Abstract (english)

By the Decision of the Government of the Republic of Croatia (124th Session, November 9th, 2018) on the
adoption of the National Program for the Implementation of the Strategy for the Management of Radioactive
Waste, Used Resources and Spent Nuclear Fuel, the issue of radioactive waste management in Croatia becomes
current. Slovene-Croatian co-ownership over the Krško nuclear powerplant (KNPP) means that half of the
operational and decommissioning waste, as well as spent nuclear fuel (SNF) belongs to Croatia. The Croatian
low and intermediate radioactive waste management program is slowly advancing, but SNF is kept in the pool
at KNPP, and dry storage before disposal is also planned. Only Finland has a building permit for the disposal
of SNF. The Republic of Slovenia has developed a generic project of the SNF repository that has already
undergone a second revision and review. The project idea involves site selection in both countries and the
conceptual solution of the SKB-3V type in the crystalline rock. The paper presents the estimate of the thermalhydro-
mechanical effects (THME) of the SNF repository in the crystalline rock (granodiorite) of SKB-3V
concept by developing a numerical model in the SIGMA/W, SEEP/W and TEMP/W software. For comparison,
THME were also estimated in the same software for the Concept-4 (container placed axially in the tunnel).
Simulations have shown that it is possible to construct an SNF repository in the crystalline rocks of Croatia or
Slovenia, that the generic landfill project is well-designed and that a model of hydro-thermo-mechanical effects
of spent nuclear fuel on the rock in Croatia/Slovenia can be produced which proves the suitability of the rock
mass for this purpose. It has been shown that application of Concept-4 is also possible, if not more desirable.
A qualitative model of potential rock behaviour and functionality of the chosen SNF disposal concept has been
developed, and it has been demonstrated that there are capacities for designing and reviewing the functionality
and safety of the future SNF repository in Croatia.

• Keywords: odlagalište; istrošeno nuklearno gorivo; termičko-hidro-mehanički efekti; numerički model
• Keywords (english): repository; spent nuclear fuel; thermo-hydro-mechanical effects; numerical model
• Language: croatian
• URN:NBN: urn:nbn:hr:169:525438
• Study programme: Title: Mining Engineering; specializations in: Mining engineering, Geotechnical engineering, Waste treatment and disposal; Course: Mining engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka rudarstva (magistar/magistra inženjer/inženjerka rudarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access; Embargo expiration date: 2021-07-05
• Created on: 2019-10-25 08:52:22