Optimization of test and maintenance of ageing components consisting of multiple items and addressing effectiveness

There are many models in the literature that have been proposed in the last decades aimed at assessing the reliability, availability and maintainability (RAM) of safety equipment, many of them with a focus on their use to assess the risk level of a technological system or to search for appropriate design and/or surveillance and maintenance policies in order to assure that an optimum level of RAM of safety systems is kept during all the plant operational life. This paper proposes a new approach for RAM modelling that accounts for equipment ageing and maintenance and testing effectiveness of equipment consisting of multiple items in an integrated manner. This model is then used to perform the simultaneous optimization of testing and maintenance for ageing equipment consisting of multiple items. An example of application is provided, which considers a simplified High Pressure Injection System (HPIS) of a typical Power Water Reactor (PWR). Basically, this system consists of motor driven pumps (MDP) and motor operated valves (MOV), where both types of components consists of two items each. These components present different failure and cause modes and behaviours, and they also undertake complex test and maintenance activities depending on the item involved. The results of the example of application demonstrate that the optimization algorithm provide the best solutions when the optimization problem is formulated and solved considering full flexibility in the implementation of testing and maintenance activities taking part of such an integrated RAM model.

Ageing Modernity: Growing old in the EU in the 21st Century. EU Centre in Singapore Background Brief No. 7, December 2012

How do urban growth and an ageing population affect or inform planning at the national and regional level in the European Union? At a time when economic stagnation, environmental concerns and demographic changes are affecting social and political discourses, they are also influencing urban form and development. Furthermore, as people are living longer, they still have much to contribute in their later years to their communities and to the economy. As a result, the policy and urban design paradigm is shifting as the relative importance of older people grows. By looking at the connections between ageing, design and the environment, and the role of policy and planning strategies, this brief seeks to understand how the EU plans for an ageing population and attempts to reshape communities in an increasingly challenging socioeconomic context. This brief looks at some of the regional initiatives and guidelines and highlights the role the EU is playing in influencing some of the development trends, particularly those in urban centres.

Measuring ageing and the need for longer working lives in the EU. CEPS Working Document No. 417/February 2016 Wednesday, 24 February 2016

This study considers different ways of measuring the ageing of societies and their implications for public policy. The first part characterises the ongoing ageing of the population in the EU28 by relating it to past and future longer-term demographic trends for broad groups of countries. It goes beyond traditional chronological measures to include recently suggested prospective measures of ageing. The second part of the study is concerned with economic dependency ratios; a more relevant measure for summarising the economic challenges related to ageing. Three main findings emerge: first, prospective indicators of ageing reveal the challenge of population ageing to be less onerous than traditional chronological measures would suggest. Their relevance, however, will depend on the degree to which policy changes can respond to the changing age structure of the population. Second, substantial increases in the length of working lives are necessary to maintain current economic dependency ratios. Taking a year-2000 perspective view of the economic challenges of ageing shows that substantial progress has been made. Third, looking towards 2050, education will have limited direct impact on the scale of the ageing challenge.

Bioethical perspectives for ageing: the documents produced by the Ethics Councils

Aging attracted keen interest in research, health, education as well as cross-sectors approaches. We researched what has been produced by the National Bioethics/Ethics Councils in the form of opinions or other documents, relating to aging and elderly people. In the websi-tes of the 28 EU councils and 12 other countries, we identified 4 documents relating to aging and 8 opinions, which we analyse. The Councils have proposed to draw the attention and reflection of public opinion to the elderly condition; all agree that the age has its own traits and that matters revert to a “culture of old age”, respect and promotion of a positive aging. Enhance the diversity of modes of aging and the importance of preparing all, promoting literacy for aging, creating social and legal protective elements (Elderly Statute, Observatory of the Elderly Conditions). From the analysis, a set of principles and bioethical elements: [1] respect for human dignity, regardless of the stage of life; [2] recognition of the person’s situation uniqueness to aging; [3] freedom of one’s own decision, which is materialized in respect for autonomy; [4] recognition of the vulnerabilities of the elderly, [5] ethical commitment and social responsibility in monitoring the elderly, [6] non-discrimination by age and [7] the guidance to the conditions of the integral good and quality of life. Aging is an existential step for which we can prepare, on the assumption that human life in its longevity, interweaves those who are older and those younger, on the crucial issue of human existence.

Postsecondary education and the new workforce /

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