Sökning: "accident investigation method"

Visar resultat 11 - 15 av 23 avhandlingar innehållade orden accident investigation method.

1. 11. On Fuel Coolant Interactions and Debris Coolability in Light Water Reactors

   Författare :Sachin Thakre; Weimin Ma; Florian Fichot; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; severe accident; fuel-coolant interactions; melt jet fragmentation; steam explosion; debris bed coolability; uncertainty analysis; Energiteknik; Energy Technology;

   Sammanfattning : During the case of a hypothetical severe accident in a light water reactor, core damage may occur and molten fuel may interact with water resulting in explosive interactions. A Fuel-Coolant Interactions (FCI) consists of many complex phenomena whose characteristics determine the energetics of the interactions. LÄS MER

3. 12. Norms and legal rules : An investigation of the tunnel construction through the Hallandsås ridge

   Författare :Matthias Baier; Rättssociologiska institutionen; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Sociology; Hallandsås; action-oriented system; normativity; tunnel construction; Sociologi;

   Sammanfattning : In 1992 Swedens biggest tunnelproject begun. Two 8.5 km tunnels should cross a big ridge in southern Sweden which was seen as an obstacle to a fast and efficient railway line connecting Oslo and Gothenburg with Malmö and Copenhagen. However, the project had to stop in 1997 due to environmental damages. LÄS MER

4. 13. High Performance Fuels for Water-Cooled Reactor Systems

   Författare :Kyle D. Johnson; Janne Wallenius; James Tulenko; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nuclear fuel; accident tolerant fuel; uranium nitride; uranium silicide; Fysik; Physics;

   Sammanfattning : Investigation of nitride fuels and their properties has, for decades, been propelled on the basis of their desirable high metal densities and high thermal conductivities, both of which oer intrinsic advantages to performance, economy, and safety in fast and light water reactor systems. In this time several key obstacles have been identied as impeding the implementation of these fuels for commercial applications; namely chemical interactions with air and steam, the noted diculty in sintering of the material, and the high costs associated with the enrichment of 15N. LÄS MER

5. 14. Development, Implementation, Validation and Applications of a Method for Simulation of Damaged and Intact Ships in Waves

   Författare :Martin Schreuder; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : The safety of ships at sea is a key aspect of shipping. Tragic passenger vessel accidents during the years motivates that large effort is spent on understanding the mechanisms of survivability of damaged ships. LÄS MER

7. 15. Study on Metallic Melt Coolant Interactions and Debris Bed Formation in a Water Pool

   Författare :Yan Xiang; Weimin Ma; Sevostian Bechta; Andrei A. Komlev; Michael Buck; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Severe accident; fuel coolant interactions; metallic melt; jet fragmentation; debris bed; CLSVOF.; Svåra haverier; interaktioner mellan bränsle och kylmedel; metallsmälta; jetfragmentering; grusbädd; CLSVOF; Kärnenergiteknik; Nuclear Engineering;

   Sammanfattning : To assess corium coolability during severe accidents of LWR, significant number of studies have been conducted previously to investigate the characteristics of debris beds formed from FCI due to fragmentation of molten corium and settlement of the fragments in a water pool. However, their focus has been placed on the oxidic component (UO2/ZrO2) of corium, while little attention has been paid to the debris bed formation due to FCI of the metallic component (Zr/Fe) of corium. LÄS MER