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[en] Managing essential knowledge as a strategic organizational asset is a factor of upmost relevance in today’s Nuclear Organizations. The author considers evident that competencies are critical carriers of Knowledge. As such the use of an appropriate competency model could be the most effective way to capture the present reservoir of explicit and tacit Knowledge of specific functions or organizational areas. Besides we could use them into new or other redesigned functions or determine the needs of specific competencies for future positions. Therefore, appropriate competency models or systems have to be developed or updated in each Nuclear Organization since it is a fundamental system for managing more effectively and efficiently the present nuclear human capital and a very significant system to forecast the evolving competence required in management, technical, scientific and safety areas to keep a continuous and highly competent nuclear workforce. On the other hand, competency based management models or systems would not achieve the expected results if they are not fully designed and integrated within the strategic organizational infrastructure of the related nuclear organization. This paper is expected to provide a wider view and practical reflexions on organizational transformation issues and the benefits of using an integrative competency model in the nuclear industry. Particularly, a clear insight of an empiric model Strategic Organizational Transformation process © and Integrative Management practices on how to re-align strategic issues with top management processes and building organizational capacity through effective competency based management for the sustainable transformation of Nuclear Organizations. (author)
[en] While the nuclear power industry works towards reinforcing its safety and regaining the public’s support post-Fukushima, it is also faced with another challenge that affects its day-to-day activities: a rapidly aging workforce. Statistics show that close to 40% of the current workforce in the nuclear power industry will retire within the next five years. For newcomer countries, the challenge is even greater, having to develop a completely new workforce. The workforce replacement effort introduces nuclear newcomers of a new generation with different backgrounds and affinities. Major lifestyle differences between the two generations of workers result, among other things, in different learning habits and needs for this new breed of learners. Interactivity, high visual content and quick access to information are now necessary to achieve a high level of retention. To enhance existing training programmes or to support the establishment of new training programmes for newcomer countries, L-3 Communications MAPPS Inc. (L-3 MAPPS) has devised learning tools to enhance these training programmes focused on the “practice-by-doing” principle. L-3 MAPPS has coupled 2-D and 3-D computer visualizations with high-fidelity simulation to bring real-time, simulation-driven animated components and systems allowing immersive and participatory, individual or classroom learning. The use of technology, such as learning tools, should be a key element of a successful and robust knowledge management programme. (author)
[en] The article describes the properties and (potential) benefits of small modular reactors (SMRs), current situation (SMRs in use, in construction, to be started up soon, under development, micro-SMRs), and examples (Akademik Lomonosov floating NPP, NuScale Power). (P.A.)
[en] Calandria tubes (CT) of the nuclear reactor sag over time due to the weight and heat loads. The CT Sag has to be monitored for the safe operations of the reactor. The typical sag size is of the order of 20 -30 mm. Presently the sag measurements are done using ultrasonic probe, LVDT and inclinometer. Measurement probes of these measuring instruments are highly prone to damage because of high radiation levels present in the CT. Also, all the methods are contact in nature. Here, we propose a non-contact sag measurement technique based on the principle of Shadowgraphy using an expanded He-Ne laser beam. The technique can measure the sag of the CT within an accuracy of ± 0.5 mm. (author)
[en] Highlights: • Adopting thermal-hydraulic phenomena (list of 116 phenomena – published). • Exploiting capabilities of existing numerical tools & existing experimental database. • Procedure to plan new-prioritized research in nuclear thermal-hydraulics. - Abstract: The difficulty in predicting locally and globally the transient evolution of two-phase or multiphase flows in complex systems is well recognized in nuclear thermal-hydraulics. Large efforts involving the expenditure of huge resources during the last three decades in previous century brought to the creation of giant databases (e.g. including experimental data and results of computer code calculations) and to the perception that the safety of nuclear reactors is guaranteed notwithstanding residual areas of unawareness. Nowadays, thousands of scientists continued to generate progress in the area having available much lower resources: more and more dead-ends for established research outcomes are experienced; the progress in knowledge resembles the slow expansion of a swamp rather than the fast moving of a river. In this paper a procedure is proposed to identify directions for research in nuclear thermal-hydraulics which are consistent with the needs in nuclear reactor safety. Two pillars for the procedure are constituted by the characterization of phenomena and by the application of qualified computational tools. Decision makers and scientists may prioritize research in areas where large impacts upon design and safety issues are identified in advance.
[en] Radiation has been used to nondestructively examine samples for over a century. Neutral particles such as ionizing photons and neutrons, in particular, have wavelengths that allow the internal structure of cm-scale objects to be observed through processes such as radiography and tomography. A related technology, backscatter scanning, is shown to be useful as a crude imaging modality that is appropriate for certain applications. This presentation considers the problem of detecting defects below the surfaces of engineered structures. Engineered structures are designed and built to exacting standards, unlike biological systems which vary one from another. A possible way of constructing images from backscatter responses obtained as a probe scans, in discrete steps, over the surface of an engineered structure is presented. The technique involves template-matching and use of a figure of- merit, and its standard deviation, calculated from a set of responses obtained over a “window” that is allowed to roll over the surface being investigated. Two applications of this backscatter scanning technique are considered: hidden corrosion within a lap joint between two layers and cracks that emanate from fastener holes. Possible reactor safety applications also are discussed. (author)
[en] The paper presents a description of the Knowledge Transfer (KT) process implemented at Cernavoda NPP, its designing and implementation. It is underlined that applying a KT approach should improve the value of existing processes of the organization through: - Identifying business, operational and safety risks due to knowledge gaps, - Transfer of knowledge from the ageing workforce to the peers and/or the organization, - Continually learning from successes and failures of individual or teams, - Convert tacit knowledge to explicit knowledge, - Improving operational and safety performance through creating both new knowledge and better access to existing knowledge.