Publications

Showing 594

• 2008:30 A model for fission gas release from mixed oxide nuclear fuel

  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 ... have remained moderate, MOX is used in nuclear power reactors in for example Belgium, Germany, France and Switzerland, while other countries like Japan have programs for introducing MOX as part of their nuclear...

  Content type: Publications

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

  low and that there is a sufficient margin between a detectable leak and pipe rupture. The research project presented in this report provides information on failure probabilities for both leak and rupture ... the manufacture. The purpose of the project is to evaluate leak- and rupture probabilities for pipes of different sizes in Swedish BWR- and PWR-plants. The project will also give information on which failure...

  Content type: Publications

• 2007:13 Dosimetry audit on the accuracy of Ir-192 brachytherapy source strength determinations in Sweden

  well-type ion chamber and calibrated equipment were used to measure the RAKR of an 192Ir source in each of the 14 Swedish afterloading units. Comparisons with values determined by vendors and hospitals were made ... SSI, hospitals and vendors were in all cases within the ±3% uncertainty (at a coverage factor of k=2), typically guaranteed by the vendors. The good agreement reflects the robustness and easy handling of...

  Content type: Publications

• 2007:10 Radiological consequences of radionuclide releases to sewage systems from hospitals in Sweden

  of 10 μSv/a and the dose constraint of 100 μSv/a. As a basis for the dose assessments, information on the use of radionuclides in Swedish hospitals during the period 1999-2004 is presented and estimates ... Sweden are summarised focusing particularly on the fate of sewage sludge, both in the sewage plant and outside. Rodolfo Avila, Idalmis de la Cruz, Synnöve Sundell-Bergman och Serena Hasselblad SSI English...

  Content type: Publications

• 2007:26 Safety Culture Enhancement Project Final Report

  safety culture work. SKI also had the ambition to gain more information on the MTO considerations taken and how the safety work is approached from the top management level in the Swedish nuclear power industry ... overview of the Swedish nuclear power industry concerning its safety culture enhancement strivings, and at the same time proactively support these strivings. A specifi c method was used in order to see if...

  Content type: Publications

• 2007:29 Intercomparison of Cement Solid-Solution Models

  potential release and migration of radionuclides. In the presence of invasive groundwater, the chemical and physical properties of cement, such as its pH buffering capacity, resistance to flow, and its mechanical ... potential release and migration of radionuclides. In the presence of invasive groundwater, the chemical and physical properties of cement, such as its pH buffering capacity, resistance to flow, and its mechanical...

  Content type: Publications

• 2007:07 Inquiry into the radiological consequences of power uprates at light-water rectors worldwide

  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 ... objective of the inquiry. Affects on the radiological and chemical situation due to the changed situation were discussed. Review of technical and organisational factors to be considered in uprate projects...

  Content type: Publications

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

  in Sweden and abroad. In connection with SKI’s review of the incident it was found that the company’s management system was not implemented correctly in conjunction with technical changes and tests. How ... Kraftgrupp’s application for thermal power increase, SKI does not intend to start the safety review, and thus will not approve trial operations at the increased thermal power whilst they are under special...

  Content type: Publications

• 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 ... radioactive waste stem from concerns over the potential for deleterious effects upon the host rock and other EBS materials (notably bentonite) under the hyperalkaline conditions (pH > 12) of cement pore fluids...

  Content type: Publications

• 2007:30 Modelling the Interaction of Low pH Cements and Bentonite

  Concrete and cement are used in constructions as well as in conditioning of waste inrepositories for radioactive waste. It is well known that in the hyperalkaline conditions (pH > 12) of standard cement ... cement pore fluids, there is potential for deleterious effects upon the host rock and other EBS materials, notably bentonite, in geological repositories. Low pH cements are beginning to be considered as a...

  Content type: Publications