Din avgränsning ger 99 träffar.
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2007:32 Low pH Cements
Concrete and cement are used in constructions as well as in conditioning of waste in repositories for radioactive waste. The development of low pH cements for use in geological repositories for radioactive ... hyperalkaline conditions (pH > 12) of cement pore fluids. Low pH cement (also known as low heat cement) was developed by the cement industry for use where large masses of cement (e.g. dams) could cause problems...
Innehållstyp: Dokument -
2007:41 Dependency Analysis Guidence, Nordic/German Working Group on Common cause Failure analysis Phaase 1 project report: Comparison and application to test cases
regarding the performance of probabilistic safety assessments (PSA), as well as PSA activities in general. Therefore, the follow-up of these activities is part of the inspection tasks of SKI. According to SKIFS ... 2004:1, the safety analyses shall be based on a systematic identification and evaluation of such events, event sequences and other conditions which may lead to a radiological accident. The research report...
Innehållstyp: Dokument -
2007:07 Inquiry into the radiological consequences of power uprates at light-water rectors worldwide
In Sweden, most of the nuclear power plants are planning power uprates within the next few years. The Department of Occupational and Medical Exposures at the Swedish Radiation Protection Agency, SSI, has ... initiated a research project to investigate the radiological implications of power uprates on light-water reactors throughout the world. The project was divided into three tasks: A compilation of power uprates...
Innehållstyp: Publikationer -
2007:04 Link Between RI-ISI and Inspection Qualification: Relationship between Defect Detection Rate and Margin of Detection
Detection Rate and Margin of Detection Barrie Shepherd Sophie Goujon John Whittle (John Whittle & Associates) January 2007 SKI perspective Background Quantitative risk-informed in-service inspection (RI-ISI) ... requires a quantitative measure of inspection effectiveness if the risk change associated with an inspection is to be determined. General methods for this are not available today and the work in this report...
Innehållstyp: Dokument -
2007:15 Evaluation of the FRAPTRAN -1.3 Computer Cod
structure and supporting experimental database. The code is intended for thermo-mechanical analyses of light water reactor nuclear fuel rods under reactor power and coolant transients, such as overpower ... without scram, and loss of coolant accidents (LOCA). Its experimental database covers boiling- and pressurized water reactor fuel rods with UO2 fuel up to rod burnups around 64 MWd/kgU. In FRAPTRAN-1.3, the...
Innehållstyp: Publikationer -
2007:29 Intercomparison of Cement Solid-Solution Models
the geological storage of radioactive waste incorporate cement based materials, which act to provide a chemical barrier, impede groundwater flow or provide structural integrity of the underground structures ... behaviour of these materials when modelling scenarios for the potential release and migration of radionuclides. In the presence of invasive groundwater, the chemical and physical properties of cement, such...
Innehållstyp: Publikationer -
2008:30 A model for fission gas release from mixed oxide nuclear fuel
the 1960's. MOX fuel pellets are made from a mixture of uranium and plutonium oxide. MOX allows the large quantities of fissile isotopes produced and remaining in spent nuclear fuel from light water reactors ... can be seen as a method to more efficiently use the natural uranium since most isotopes in natural uranium are the Pu-producing U-238. In fact, programs for using MOX were developed in the 1970's to meet...
Innehållstyp: Publikationer -
2007:10 DECOVALEX-THMC - Task D
DECOVALEX-THMC Project Task D Long-Term Permeability/Porosity Changes in the EDZ and Near Field due to THM and THC Processes in Volcanic and Crystalline-Bentonite Systems Phase 1 Report Authors: J ... Barr Office of Repository Development, DOE, USA February 2007 Research SKI Report 2007:10 DECOVALEX-THMC Project Task D Long-Term Permeability/Porosity Changes in the EDZ and Near Field due to THM...
Innehållstyp: Dokument -
2007:39 Influence of Crack Morphology on Leak Before Break Margins
regulation SKIFS 2004:2 allows for the use of Leak Before Break (LBB) as one way to provide assurance that adequate protection exists against the local dynamic consequences of a pipe break. The way to demonstrate ... 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 shall then be demonstrated...
Innehållstyp: Publikationer -
2007:08 DECOVALEX-THMC - Task B
contributed to Phase 2 of Task B of the international DECOVALEX-THMC project, which took place during the period of March 2004 to May 2006. The Phase 2 work incorporated the use of a wide range of numerical models ... simulate the failure of a number of intact rock core samples, from the APSE tunnel at Äspö HRL, as tested in uniaxial compression and other loading conditions with the intention of establishing the common...
Innehållstyp: Publikationer