[en] The 25/2009 Decision of the Hungarian Parliament has granted prior consent to begin preparatory works to build new reactor blocks at the Paks Nuclear Power Plant site. Based on that Decision, the Hungarian National Atomic Energy Authority, as the supervising organization of nuclear activities, has started to develop nuclear safety standards for the new blocks. The draft regulation is complete; professional consultation is currently underway. This article presents the additional requirements of the current legislation and the new blocks. (TRA)

[en] This session was originally titled 'Safety: Who cares?' in a fairly provocative way. A clear conclusion of this session and discussions that were held at the workshop is that there is a wide concern for safety among the people in charge of control room operations. This was shown as well by the quality of the seven talks presented in this session on subjects ranging from safety standards to a practical case of a safety incident. (author)

[en] Most of the laboratories in Malaysian Nuclear Agency are using chemicals in their research activities. However, it is known that using of chemicals without proper knowledge especially on the material characteristics as well as safe handling procedure may cause great harm to the workers. Therefore, Safety, Health and Environmental Committee (JKSHE) sees the need to establish a good chemical hazard management to ensure that a safe and healthy workplace and environment is provided. One of the elements in chemical hazard management is to carry out Chemical Hazard Risk Assessment (CHRA). The assessment was done so that decision can be made on suitable control measures upon use of such chemicals, such as induction and training courses to be given to the workers and health surveillance activities that may be needed to protect the workers. For this, JKSHE has recommended to conduct CHRA for one of the laboratories at Secondary Standard Dosimetry Laboratory (SSDL) namely Film Dosimeter Processing Room (dark room) as the initial effort towards a better chemical hazard management. This paper presents the case study where CHRA was conducted to identify the chemical hazards at the selected laboratory, the adequacy of existing control measures and finally the recommendation for more effective control measures. (author)

[en] The act of the safety regulations and standards, how to understand exactly the meaning and how to apply the regulations and standards in appropriate fields are discussed. Some problems to be paid attention are put forward in quoting the related regulations and standards, that is, the quoted regulations and standards must be the latest edition, and must be of the pertinence and comprehensiveness. (authors)

[en] Safety studies for nuclear power plants in Belgium are performed on behalf of the owner by architect-engineers and submitted to the authorities for technical assessment. US safety rules are applied in Belgium, but there is also experience of French, German and IAEA safety rules through participation in foreign projects

[en] The nuclear safety approach imposes to take into account in the design of a reactor, a list of events and configurations that are considered as precursors of transients important for the safety of the reactor. These incidental or accidental transients should be thoroughly studied during the design phase in order to be sure that safety criteria are well respected with a sufficient margin. These studies are framed by procedures that are based on sets of input data, on simulation models and on computer codes and their validation domain. The operating life of a study procedure is usually over 10 years. A lot of procedures that date back in the seventies rely on simplified models and appear to be too conservative to today's standard. The generalization of 3-dimensional calculations for reactor core codes and the coupling between neutron transport codes and thermalhydraulic codes make necessary a progressive updating of the study procedures. (A.C.)

[en] This standard covers the installation of transducers for nuclear-safety related applications excepting those for measurements of liquid metals

[en] The Central Electricity Generating Board's (CEGB) Magnox stations have been subjected to a process of continual safety reviews throughout their lives. Periodic inspections of nuclear safety related components have been carried out to an agreed schedule, numerous specific aspects of plant safety have been rigorously examined and plant improvements which have enhanced specific safety features have been engineered. More recently, Long Term Safety Reviews have been undertaken to complement these regular reviews and to provide confidence that the engineered safety standards remain sufficiently close to those applied to new reactors as to permit continued operation in the longer term. The purpose of this paper is to describe the ongoing safety review process as it applies to Magnox stations. It will describe the depth of technical support underpinning the process and will give examples of specific improvements carried out. The paper will go on to describe the scope of the Long Term Safety Reviews and the arrangements set up to manage them within CEGB so that they may be seen within the proper perspective of the overall assurance of safety. The CEGB's overall conclusions will be presented. (author)

[en] This paper defines the quantitative safety, description of the safety analysis, estimation of the safety and relation between safety and economics of reactor operation

[en] This report describes the essential practical issues to be considered by organizations aiming to strengthen safety culture. It is intended for senior executives, managers and first line supervisors in operating organizations. Although safety culture cannot be directly regulated, it is important that members of regulatory bodies understand how their actions affect the development of attempts to strengthen safety culture and are sympathetic to the need to improve the less formal human related aspects of safety. The report is therefore of relevance to regulators, although not intended primarily for them. The International Nuclear Safety Advisory Group (INSAG) introduced the concept of safety culture in its INSAG-4 report in 1991. Since then, many papers have been written on safety culture, as it relates to organizations and individuals, its improvement and its underpinning prerequisites. Variations in national cultures mean that what constitutes a good approach to enhancing safety culture in one country may not be the best approach in another. However, INSAG seeks to provide pragmatic and practical advice of wide applicability in the principles and issues presented in this report. Nuclear and radiological safety are the prime concerns of this report, but the topics discussed are so general that successful application of the principles should lead to improvements in other important areas, such as industrial safety, environmental performance and, in some respects, wider business performance. This is because many of the attitudes and practices necessary to achieve good performance in nuclear safety, including visible commitment by management, openness, care and thoroughness in completing tasks, good communication and clarity in recognizing major issues and dealing with them as a priority, have wide applicability