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2019:04 Dosimetry in environments surrounding a laser-plasma accelerator
part of the laser pulse interacting with a plasma consisting of free, negatively charged electrons and positively charged ions. The electrons are quickly displaced by the laser pulse whereas the heavier ... short distances in the strong electrical fields. This technology may allow for the development of new and much smaller types of accelerators for applications where for instance linear accelerators are used...
Content type: Publications -
2019:03 Evaluation of the hydrodynamic model in PARET/ANL
possibility for SSM to do own analysis of fuel rods in reactivity initiated accidents. The development and administration of the program is done by Quantum Technologies AB on assignment from SSM. SSM’s development ... SCANAIR V_7_5. The present work is the 2017 contribution to SCANAIR development and contains an evaluation of alternative models and concepts that will improve the aforementioned two-phase thermohydraulic model...
Content type: Publications -
2019:02 Research within technical safeguard at Chalmers University of Technology during 2016-2017
Subatomic and Plasma Physics in Chalmers, formerly the Division of Nuclear Engineering, has performed research in nuclear safeguards and non-proliferation since 2004, with support from SSM and its predecessor ... predecessor, SKI. Due to various organizational and personnel changes in Chalmers, this research was pursued with limited resources and personnel during 2016-06-30 – 2017-12-31 with a research grant, Dnr SSM2016-662...
Content type: Publications -
2019:01 Research within technical safeguard at Uppsala university during 2016-20
nuclear safeguards within the framework of contract SSM2016-661, including in total 3 PhD students and 7 senior researchers. This report marks the final reporting covered by this contract. The executed ... fuel assemblies, and; (6) Estimation of uncertainties involved in measurements of spent fuel before encapsulation. Several of the projects are co-funded also from other contracts with SSM and with other funding...
Content type: Publications -
2018:25 UO2 fuel oxidation and fission gas release
abnormal heat up. In this project the oxidation of UO2 is scrutinized and its effect on pellet fragmentation, fission gas release and damage of fuel rods has been investigated. Many phenomena that affect ... affect a fuel rod are described mathematically in analysis tools (computer codes) like FRAPCON and FRAPTRAN, but fuel oxidation is not commonly included in such tools. Current analysis tools usually have an...
Content type: Publications -
2018:24 Structural equation modelling for analysis of human and organizational factors in nuclear power plant control rooms
missing include how to establish strict clarity concerning the aspects that have individual importance and which aspects are important collectively, as well as how to match different measurable aspects. Improved ... credible outcome and provide guidance when formulating specifications of requirements for requisite skills, provide input for education and training programmes which may need sharper focus, and achieve a higher...
Content type: Publications -
2018:23 Evaluation of the Impact of the Model Additional Protocol on Non-Nuclear-Weapon States with Comprehensive Safeguards Agreements
Non-Proliferation. This call resulted in SSM accepting a proposal from the Vienna Center for Disarmament and Non-Proliferation (VCDNP) to evaluate the impact of the implementation of Additional Protocols (AP) ... since been implemented by a growing number of states and the IAEA. By December 2017, there were 127 states where such APs were implemented. SSM, and thereby Sweden, have long been proponents of the AP.
Content type: Publications -
2018:21 Research on Resaturation of Bentonite Buffer
repository for spent nuclear fuel are complicated and are often illustrated, analysed and modelled multi-disciplinarily as coupled thermal (T), hydrological (H) and mechanical (M) processes with multi-phase flow ... of bentonite buffer will not start working until the bentonite buffer becomes fully water saturated and the buffer material becomes homogenised. A slow resaturation process with uneven swelling of the bentonite...
Content type: Publications -
2018:19 Licensing of safety critical software for nuclear reactors
critical software. The members come from regulatory authorities and/or their technical support organization. The report, without the SSM cover and this page, will be published by or available at the websites ... websites of the other participating organizations. Effect on SSM supervisory and regulatory task The effect of the report is high as it presents a common view on important issues by experts from eleven international...
Content type: Publications -
2018:18 Procedure for Safety Assessment of Components with Defects
Background SSM and the Swedish nuclear power plant owners have financed Kiwa Inspecta Technology in Sweden to develop a new version of the handbook for assessment of defects. This represents a major update ... where the failure mechanisms fracture and plastic collapse are considered for cracked components of metallic materials by evaluating the stress intensity factor and the plastic limit load. Almost all elements...
Content type: Publications