62 research outputs found
Pour Adopter et Diffuser les Valeurs Santé et Sécurité au Travail dans nos Entreprises Algériennes
No full textDepuis quelques décennies, les entreprises algériennes sont de plus en plus confrontées aux problématiques des risques industriels. Du fait de la complexité du matériel, des installations et des produits mis en jeu, il est devenu primordial d'assurer une gestion efficace des risques surtout pour les entreprises dont la fabrication peut être sensible aux phénomènes précurseurs de dangers et de risques. Ces risques peuvent avoir des conséquences désastreuses sur les vies humaines, le matériel et sur la productivité industrielle. La pratique et l'analyse judicieuses du concept de 'risk management' est défaillante dans les entreprises algériennes. Par conséquent, on constate une maturité professionnelle inégale, des stratégies de risques différentes et des choix organisationnels disparates. Ce travail traite les idées, les réflexions et les pratiques industrielles de prévention des risques dans un but affiché de santé au travail et de sécurité humaines et matérielles. L'objectif essentiel de ce travail est de montrer l'intérêt de ces pratiques sur la sécurité d'un site industriel en général et des postes de travail en particulier afin de déceler toute défaillance qui peut survenir sur les procédé
Combined Effect of Low and High Rate of Corrugated Steel Fiber and Stirrups on Mechanical Performance of SFSCC Beams
Full text linkTo improve the fragile nature of concrete, its low tensile strength, and a view to giving it the desired properties, which serve to build more durable structures at less cost, the association of a self-consolidating concrete with fiber, is considered a wise combination. However, given the limited amount of research on the response of SFSCC structures, designers and engineers do not use this material with confidence. In the present work, an experimental companion was conducted to examine the combined effect of fibers and stirrups, including the low and high rate of steel fiber, on the behavior of SFSCC beams. This choice allowed working on economically viable SFSCC. Beams were also madewith ordinary concrete and others with self-consolidating. Thirty-six beams were of identical cross-section 10x20cm and length of 120cm; carried out with or without longitudinal and transverse reinforcement. Before proceeding with the main part of the research program, the concrete mixtures were characterized first in the fresh state by the following tests: Slump Flow, Time Flow T500; J-Ring, L-Box, V-Funnel, and Sieve stability, and then in the hardened state: compressive and tensile strengths. In the light of the results obtained, it was found that adding steel fibers to fresh self-consolidating concrete decreased its workability and fluidity but improved its hardening properties. Subsequently, the addition of the steel fibers increased the flexural capacity of the beams significantly and enhanced their ductility. Also, an addition of the steel fibers in an adequate percentage, in this case at 0.90%, made it possible to replace the shear reinforcements and can lead to changing the mode of failure from a collapse by brittle shear to a mechanism of ruin in ductile bending
An Overview of Constantine’s Tram Safety
Full text linkAbstract
This paper presents an overview of the tram safety in the city of Constantine. The objective of this work is to contribute to the improvement of railway safety of a new urban transport mode in Algeria, whose safety culture is absent in the behaviour of citizens, in the face of major risks linked to the operating of Constantine’s tram. In this context this article focuses on four parts: safety and risk management, railway risks, analysis of accidents, safety system and human factors (tram driver). This paper discusses the main issues, challenges and future directions of public transportation safety on these themes.</jats:p
Feedback a learning tool for future organizations
No full text
Purpose
The purpose of this study is to provide means of reflection on the skill acquired during accidents occurring in normal and disorganized situations as well as to draw the consequences, memorize and reuse them in order to avoid them in the future.
Design/methodology/approach
We perceive the external and familiar manifestations of the use of electricity such as light, heat and motion. The lack of a direct visual perception of this type of energy often leads to serious consequences caused by either ignored or underestimated risks. The severity of accidents related to electrical risk remains high: nearly 1 in 100 deaths was caused by electricity in 2010. In Algeria, nearly 180 deaths per year are electricity-related; electricity is also the cause of 20 per cent of fires. As the prevention of this risk affects many sectors, apart from power generation and power distribution networks, workers in all types of work areas, from construction to maintenance, are likely to be exposed to electrical hazards.
Findings
The results of this study imply that any workplace can face an electrical accident. Therefore, in this work, the authors have attempted to create a memory of risks, based on the feedback of fatal adverse events manifested in a national company, Sonelgaz, in Algeria. Asystematic analysis of these three fatal accidents allows prediction of possible dangerous situations and helps to better plan the objective prevention of such future incidents.
Originality/value
The lack of direct visual perception of this type of energy often leads to serious consequences caused by ignored or underestimated risks. The severity of accidents related to electrical risk remains high: nearly one over 100 deaths are because of electricity in 2010. In Algeria, the authors recorded nearly 180 deaths per year; it is also the cause of 20 per cent of fires. As now, because the prevention of this risk affects many sectors, apart from power generation and power distribution networks, all types of work, from construction to maintenance are likely to expose workers to electrical hazards. This implies that any company can face an electrical accident. Therefore, in this work the authors try to create a memory of risks, based on the feedback of fatal adverse events manifested in the national company Sonelgaz in Algeria.
</jats:sec
Rating Quantitative and Mapping of Sliding of the Quarry of Ouenza, Algeria
No full textAbstractThe exploitation of iron ore deposit of Ouenza runs into serious difficulties related to landslides. Among the most important events of sliding, we have those of the site “Zerga” including lands located above the ore body “north” of Zerga. The overall area of the landslide is 40,000 m2. Instabilities of land are also manifested in other mine workings, thereby destroying the natural and economic resources. Thus, issues of prevention are needed to secure the career staff and preserve the resources and assets. Our goal is to determine the stability parameters of the quarry to allow the extraction of ore in good working conditions. This allows us to have a topographic map that puts us in the problem and gives us valuable information to guide us in our work to eliminate the sli
Contribution to the Optimization of the Operation of an Urban Railway Line. Case Study: Constantine Tramway
No full textAn Overview of Constantine’s Tram Safety
No full textThis paper presents an overview of the tram safety in the city of Constantine. The objective of this work is to contribute to the improvement of railway safety of a new urban transport mode in Algeria, whose safety culture is absent in the behaviour of citizens, in the face of major risks linked to the operating of Constantine’s tram. In this context this article focuses on four parts: safety and risk management, railway risks, analysis of accidents, safety system and human factors (tram driver). This paper discusses the main issues, challenges and future directions of public transportation safety on these themes
- …
