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[en] The work presented in this paper discusses issues related to post Fukushima requirements and investigates the performance of some severe accident safety features for AES-92 design to cope with Fukushima accident and post Fukushima requirements. The paper investigates the Passive Residual Heat Removal System (PRHRS) capability for removing all the core decay heat without any AC power source or even any operator intervention to provide a significant grace time, during which essentially passive natural processes can provide adequate cooling, before any operator action is needed. It also investigates the compliance of the design of severe accidents safety features of AES-92 model, which is the proposed design to be constructed in Jordan, with IAEA post Fukushima safety requirements (SSR-2/1). A deterministic safety code will be used to model the essential components of the primary, secondary loop and passive safety systems with corresponding control systems for AES-92 model to analytically address the performance of the PRHRS taking into the severe environmental conditions of the NPP site in Jordan. (author)
[en] This report presents the results of an investigation concerning a concept for the operationalisation of specified protection strategies under consideration of radiological and non-radiological aspects as well as a generic algorithm for the operationalisation of specified protection strategies. The study was performed in the context of the implementation of Directive 2013/59/Euratom into German law, which was accompanied by changes in the German emergency management system. Part of these changes are the introduction of nation-wide reference scenarios, which are described in emergency plans and integrated into the emergency management system as part of a protection strategy. With reference to the individual reference scenarios, the protection strategy has to be optimised for each respective scenario. The strategy has to be concretised by specifications regarding the evaluation of the appropriateness and decision on measures to protect against serious adverse consequences to humans, the environment or material assets as well as organi-sational regulations. In the case of an incident, the measures already taken and, if necessary, those still to be taken in various areas must be continuously reviewed and, if necessary, adapted to the developing situation. This results in a cyclical process of information gathering and processing, decision making, implementation and performance review, which has been examined in detail in order to understand, assess and, if necessary, adapt this process. For the analyses done, the current state of the art in science and technology was examined, the relevant elements of process chains of the optimised protection strategies were determined from the discussion drafts of the general emergency plan of the Federal Government and a system for mapping such process chains was specified. Based on these analyses, the algorithm for operationalising optimised protection strategies was derived by transferring and abstracting the results. The results of these investigations show a possible procedure in the evaluation and implementation process of measures as part of an optimised protection strategies and point out possible problems in such processes.