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Din avgränsning ger 94 träffar.

• 2007:37 Identification of Common Cause Initiating Events Using the NEA IRS Database

  01 januari 2007

  framework of this project is a continuation of work conducted for SKI in 1998 on the identification of Common Cause Initiators based on operational events documented in the NEA Incident Reporting System (IRS) ... electrical systems, etc. Dependent events are usually ranked the highest on the safety significance scale, due to their potential impact on the risk. Risk contribution from independent (random) events is typically...

  Innehållstyp: Dokument

• 2007:22 Safety Management An Introduction to a Frame of Reference Exemplified with Case Studies from Non-Nuclear Contexts

  01 januari 2007

  regulatory work on safety management. The inner meaning of the concept and its consequences are issues SKI find valuable to explore further. Purpose This project is a pre-study on organizational safety ... will form the base for a main project on safety management with a direct connection with an NKS project that will form a network for sharing of ideas and research on organizational safety, safety culture...

  Innehållstyp: Dokument

• 2007:43 ProLBB - A Probabilistic Approach to LeakBefore Break Demonstration

  The way to demonstrate that LBB prevails relies on a deterministic procedure for which a leakage crack is postulated in certain sections of the pipe based on the leak detection capability of the plant. It ... detectable leak and pipe rupture. The research project presented in this report provides information on failure probabilities for both leak and rupture for pipes of different sizes in Swedish BWR- as well...

  Innehållstyp: Publikationer

• 2007:12 Development of a constitutive model for the plastic deformation and creep of copper and its use in the estimate of the creep life of the copper canister

  these have all involved very short duration tests at relatively high stresses. Reported creep tests on oxygen free (OF) copper have demonstrated that copper can have extremely low creep ductility. However ... copper (included as an Appendix to the present report) has been used as the basis for a discussion on the possibility of brittle creep fracture of the copper canister during long term storage of nuclear...

  Innehållstyp: Publikationer

• 2007:14 Review of experimental data for modelling LWR fuel cladding behaviour under loss of coolant accident conditions

  01 januari 2007

  alloys ................................................................ 29 3.1.5 Effect of pressure on oxidation......................................................... 34 3.2 Clad deformation and rupture ... criteria for LOCA, namely, clad embrittlement phenomenology, clad embrittlement criteria (limitations on maximum clad oxidation and peak clad temperature) and the experimental bases for the criteria. Two...

  Innehållstyp: Dokument

• 2007:31e Safety and Radiation Protection at Swedish Nuclear Power Plants 2006

  01 maj 2007

  ................................................. 56 Summary and conclusions The incident on July 25 Safety related problems in the electric systems of the Forsmark 1 reactor were the dominant ... dominant event in Swedish nuclear power plants in 2006. The incident has had a significant impact on our attitude towards the reliability of how safety systems function both in Sweden and abroad. In connection...

  Innehållstyp: Dokument

• 2007:15 Evaluation of the FRAPTRAN -1.3 Computer Cod

  01 januari 2007

  by a coolant channel model in the code. The code provides different clad rupture models depending on cladding temperature and amount of cladding plastic hoop strain. For LOCA analysis, a model calculating ... applicability of the current version as a self-standing analysis tool for LOCA and RIA analyses depends highly on the numerical robustness of the coolant channel model for generation of clad-to-coolant heat transfer...

  Innehållstyp: Dokument

• 2007:15 Evaluation of the FRAPTRAN -1.3 Computer Cod

  determined by a coolant channel model in the code. The code provides different clad rupture models depending on cladding temperature and amount of cladding plastic hoop strain. For LOCA analysis, a model calculating ... applicability of the current version as a self-standing analysis tool for LOCA and RIA analyses depends highly on the numerical robustness of the coolant channel model for generation of clad-to-coolant heat transfer...

  Innehållstyp: Publikationer

• 2007:04 Link Between RI-ISI and Inspection Qualification: Relationship between Defect Detection Rate and Margin of Detection

  01 januari 2007

  been established between defect detection ratio and margin of detection based on blind trails. The results are based on a rather small amount of data produced by personnel from one inspection laboratory ... (POD) used in RI-ISI models. The relationship need to be developed with more data to put the results on a more solid basis. Project information Responsible for the project at SKI has been Peter Merck.

  Innehållstyp: Dokument

• 2007:07 DECOVALEX-THMC Project - Task A

  and assumptions were introduced and the results should be considered under these assumptions. Based on the evaluation of the multiple teams’ results, a few points of concern were identified that may guide ... and buffer, the variation of rock permeability with stress or strain could have significant effects on the resaturation time of the bentonite. Permeability functions specific to the granite under consideration...

  Innehållstyp: Publikationer