French Procedure for Ageing Management Program of Safety Components

2003 ◽  
Author(s):  
Claude Faidy
Keyword(s):  
Degradation Mechanism ◽  
Management Program ◽  
Mechanism Analysis ◽  
Periodic Review ◽  
Industrial Facility ◽  
Major Step ◽  
Safety Level ◽  
The Status ◽  
Ageing Management ◽  
Selection Of

Managing ageing and remaining lifetime of an industrial facility is a concern that must be taken in account by utility as soon as possible in daily activities. The corresponding actions engaged in France are based on 3 major step that are described in the paper: • routine maintenance, • exceptional maintenance, • systematic and periodic review of safety important components and structures sensitive to ageing to assure the effectiveness of the maintenance actions and maintain a high safety level of the plant with a good competitiveness. Following different on-going programs on ageing management of different components, EDF developed its own approach, based on IAEA guidelines, in order to systematically review all the ageing management programs implemented on its 3-loop plants. The methodology is done in 3 steps: • selection of components and justification, • degradation mechanism analysis, • synthesis and consequences on maintenance programs. After a presentation of each step of the procedure a quick overview of the status of application in France is done. Comparison of the methodology with similar methodology used in different other countries is done to close the paper.

Ageing Management of Cast Stainless Steel Components in French PWRs

2012 ◽  
Author(s):  
Claude Faidy
Keyword(s):  
Stainless Steel ◽  
Degradation Mechanism ◽  
Thermal Power ◽  
Thermal Ageing ◽  
Management Program ◽  
The Past ◽  
Safety Margins ◽  
The Moment ◽  
Ageing Management ◽  
And Control

During the past 20 years many works have been done on Ageing Management Program (AMP) of Safety classed components in EDF. To-day, EDF is starting the 3rd ten-year shutdown of all these 3-loop plants (34 plants). During the associated Safety Review, a specific task is devoted to ageing effects and management of all the safety concerned components. A large list of components has been reviewed: mechanical, civil engineering, instrumentation and control, cables, non metallic components. Cast duplex stainless steel components are an example of these reviews. This material is used in many PWR components: elbows, pump casing, valves…A specific Ageing Management Program has been developed in France in the past 20 years in order to consider thermal ageing consequences on different components. This program considers: - Degradation mechanism understanding; - Diagnostic: what are the more sensitive components; - Monitoring in operation: thermal power; - In-service inspection: radiography and other laboratory methods; - Flaw evaluation and material properties; - Replacement of elbows, alone or associated to steam generator replacement. The paper will give a short description of each topic. In the moment EDF is planning a large replacement program of CF8M elbows to assure safety margins for 60 years of operation.

Aging Management Program: Comparisons Between EDF Methodology and U.S. GALL Report

2004 ◽  
Author(s):  
Claude Faidy
Keyword(s):  
Preventive Maintenance ◽  
Damage Assessment ◽  
Degradation Mechanism ◽  
Management Program ◽  
Component Selection ◽  
Maintenance Program ◽  
The Us ◽  
Mechanical Components ◽  
Ageing Management ◽  
Complementary Analysis

EDF has developed a special methodology to review systematically the ageing management programs of all the safety important components. After a general presentation of the methodology on the different aspects (component selection, degradation mechanism sensitivity, detailed complementary analysis), the paper will make some comparison with the US procedure developed and presented in the GALL report. The objective of the comparison is to compare and discuss the major differences between EDF and US utility approaches on the mechanical components. The major differences are connected to: • different regulation request; • different code rules; • different existing management program; • different appreciation on the potentiality of some degradation mechanism. The paper will analyse in detail some specific examples, including current maintenance program, preventive maintenance and anticipation program, damage assessment and ISI program, R&D needs...

Bibliography of publications written by Alwyne (Wyn) Cooper Wheeler (1929–2005)

2009 ◽  
Vol 36 (1) ◽  
pp. 77-99 ◽  
Author(s):  
ANN DATTA
Keyword(s):  
Fish Fauna ◽  
Archaeological Sites ◽  
Changing Environment ◽  
Scientific Papers ◽  
The Status ◽  
Fish Remains ◽  
Important Fish ◽  
Selection Of

The bibliography brings together more than 250 scientific papers and books written by Alwyne (Wyn) Wheeler over fifty years, from 1955–2006. This chronological list shows that from the beginning his research followed three themes: taxonomy of historically important fish collections; identification and distribution of the British and European fish fauna ; the status of British fishes in a changing environment. Until the mid-point in Wyn's career he published regularly on the identification of fish remains in archaeological sites in Britain and Europe. Wyn also wrote under an alias, Allan Cooper, and these have been listed separately. The bibliography concludes with a selection of the regular columns he contributed to angling magazines.

The Selection of Children's Books Translated from Spanish to Galician, Basque and Catalan (1940–80)

2009 ◽  
Vol 2 (2) ◽  
pp. 243-258
Author(s):  
Mónica Domínguez Pérez
Keyword(s):  
Social Economic ◽  
Children’S Literature ◽  
Status Quo ◽  
Intercultural Relations ◽  
Children's Books ◽  
Source Text ◽  
The Status ◽  
Castilian Spanish ◽  
Different Levels ◽  
Selection Of

This study deals with children's literature translated from Castilian Spanish into Galician, Basque and Catalan by a different publisher from that of the source text, between 1940 and 1980, and with the criteria used to choose books for translation during that period. It compares the different literatures within Spain and examines the intersystemic and intercultural relations that the translations reflect. Following the polysystems theory, literature is here conceived as a network of agents of different kinds: authors, publishers, readers, and literary models. Such a network, called a polysystem, is part of a larger social, economic, and cultural network. These extra-literary considerations play an important role in determining the selection of works to be translated. The article suggests that translations can be said to establish transcultural relations, and that they demonstrate different levels of power within a specific interliterary community. It concludes that, while translations may aim to change the pre-existent relationships, frequently they just reflect the status quo.

Degradation mechanism analysis of all-solid-state lithium polymer secondary batteries by using the impedance measurement

2005 ◽  
Vol 146 (1-2) ◽  
pp. 741-744 ◽  
Author(s):  
Shiro Seki ◽  
Yo Kobayashi ◽  
Hajime Miyashiro ◽  
Atsushi Yamanaka ◽  
Yuichi Mita ◽  
...  
Keyword(s):  
Solid State ◽  
Degradation Mechanism ◽  
Impedance Measurement ◽  
Mechanism Analysis

THE CONCEPT, TYPES, TASKS AND THE NEED FOR THE USE OF URGENT INVESTMENT TOOLS OF CRISIS MANAGEMENT AT ENTERPRISES

2017 ◽  
Author(s):  
Oksana Yurynets ◽  
Keyword(s):  
Crisis Management ◽  
Economic Condition ◽  
Negative Impact ◽  
Negative Influence ◽  
Management Program ◽  
Management Tools ◽  
The Subject ◽  
Effective Development ◽  
Selection Of

Currently, many Ukrainian enterprises are in crisis. Getting out of this situation requires the use of various types of urgent crisis management tools, among which investment instruments play an important role. The purpose of this article is to form the theoretical basis for the use of urgent investment tools of crisis management at enterprises. It was found that the urgent investment tools of crisis management in the enterprise should be understood as ways of immediate (urgent) investment actions which are aimed at eliminating or reducing the negative impact of the crisis on the economic condition of the enterprise and ensuring its further effective development. These instruments are grouped according to the following characteristics: the environment in which the relevant instruments are formed and operate, the relation to the current owners of the enterprise, the effectiveness of implementation, the duration of the effect of implementing instruments, the urgency of their implementation, the areas of investment, the objectives of application, the duration of application, the types of financial and economic crises at the enterprise, the elimination (reduction) of the negative influence of which the corresponding tools are directed at, the subject of investment. It is established that the main tasks of using investment urgent tools of anti-crisis management at the enterprises are: selection of the best types of investment urgent tools of anti-crisis management; selection of the best variant of each type of urgent investment tools of crisis management; setting deadlines for the implementation of selected types and options for urgent tools of crisis management at the enterprise; determination of the optimal amount of total investments that should be invested in the implementation of the crisis management program at the enterprise, and the corresponding to this volume of the general list of investment urgent tools of such management; identifying the best sources of investment and establishing the best structure of investment in terms of these sources.

Cycling performance of LiFePO4/graphite batteries and their degradation mechanism analysis via electrochemical and microscopic techniques

Ionics ◽  
2021 ◽  
Author(s):  
Hossein Sharifi ◽  
Behrooz Mosallanejad ◽  
Mohammadkhalil Mohammadzad ◽  
Seyed Morteza Hosseini-Hosseinabad ◽  
Seeram Ramakrishna
Keyword(s):  
Degradation Mechanism ◽  
Cycling Performance ◽  
Mechanism Analysis ◽  
Microscopic Techniques

scholarly journals The Ecological Footprint Accounting of Products: When Larger Is Not Worse

Resources ◽  
2018 ◽  
Vol 7 (4) ◽  
pp. 65 ◽  
Author(s):  
Nicoletta Patrizi ◽  
Valentina Niccolucci ◽  
Riccardo Pulselli ◽  
Elena Neri ◽  
Simone Bastianoni
Keyword(s):  
Environmental Impact ◽  
Ecological Footprint ◽  
Three Dimensional ◽  
Product System ◽  
Sustainability Evaluation ◽  
Competitive Systems ◽  
The Status ◽  
Resource Accounting ◽  
Selection Of

One of the main goals of any (sustainability) indicator should be the communication of a clear, unambiguous, and simplified message about the status of the analyzed system. The selected indicator is expected to declare explicitly how its numerical value depicts a situation, for example, positive or negative, sustainable or unsustainable, especially when a comparison among similar or competitive systems is performed. This aspect should be a primary and discriminating issue when the selection of a set of opportune indicators is operated. The Ecological Footprint (EF) has become one of the most popular and widely used sustainability indicators. It is a resource accounting method with an area based metric in which the units of measure are global hectares or hectares with world average bio-productivity. Its main goal is to underline the link between the (un)sustainability level of a product, a system, an activity or a population life style, with the land demand for providing goods, energy, and ecological services needed to sustain that product, system, activity, or population. Therefore, the traditional rationale behind the message of EF is: the larger EF value, the larger environmental impact in terms of resources use, the lower position in the sustainability rank. The aim of this paper was to investigate if this rationale is everywhere opportune and unambiguous, or if sometimes its use requires paying a special attention. Then, a three-dimensional modification of the classical EF framework for the sustainability evaluation of a product has been proposed following a previous work by Niccolucci and co-authors (2009). Finally, the potentialities of the model have been tested by using a case study from the agricultural context.

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