[en] This Decree provides that the RID shall be published in the Official Gazette of the French Republic. The Regulations are accordingly published as an Annex to the Official Gazette of the same date. (NEA)

[en] Soviet and foreign experience of application of tracer techniques in rail transport studies is considered. A description is given of methods and results of investigations on lubricating properties of oils and lubricants, untifriction properties of bearing alloys, wear of rolling stock details, upper track structure state, intraboiler processes, efficiency of surface cleaning etc. Prospects for using tracer techniques in investigations aimed at improving the efficiency of industrial processes at railways are pointed out. The book is intended for engineers, scientific and technical workers

[en] Different types of track infrastructure can be found along railway lines. Separation zones between these different types of structures are the source of a lot of problems. Transition zones on a railway line represent a gradual solution for the problems between conventional railway structure and singular structures located at different points along the line. The different nature, positioning and geometry used with the materials generate changes in the stiffness on both sides of these singular zones leading to an increase in wear and a loss of geometry, with the associated maintenance costs. This article describes the use of mathematical modelling to represent the behaviour of these zones as a function of train running direction and track supports. Available research into transition zones has not studied these separation points where high increases in load are generated for very short periods of time. Finite elements are used to model two types of track (conventional ballasted track and slab track), using a vehicle to dynamically simulate the behaviour in these zones as a function of train running direction and the position of track supports. The magnitudes analysed were the vertical stresses and the vertical displacements under the sleepers and the supports in both types of structure. The results show increased stresses at the separation zone between both structures which varied in magnitude and position depending most of track supports’ location than the train running direction. (Author)

No abstract available

[en] This paper discusses the establishment of an integrated waste management system for spent nuclear fuel. Development of a spent-fuel cask that is compatible with both rail and barge modes of transportation is addressed. Design approaches are presented

[en] The basic equations of the computer model CARDS (Cask-Railcar Dynamic Simulator), developed for the U.S. Nuclear Regulatory Commission to simulate the dynamic behavior of radioactive material shipping package - railcar systems, are presented. A companion model, CARRS (Cask Railcar Response Spectrum Generator), that generates system response as frequency response spectra is also presented in terms of its basic equations

[en] This paper presents an overview of spent fuel transportation in the United States from a current as well as historical perspective and discusses the planned activities in this area being developed. The current transportation situation, existing truck and rail size and weight limitations and current reactor interfaces with the transportation system are discussed, and a summary of the projected shipment estimates for spent fuel is included. The sensitivity of shipment estimates to important transport parameters (such as individual cask capacity) and possible improvements and opportunities in transportation are presented

[en] The analysis method used to design the shock absorbing end covers of the Transnuclear TN-12Y transport packaging is described. The method uses the basic equations of motion (i.e. F = ma) which were programmed for computation with an Apple II computer. Inertia loadings for various positions of the model with respect to the target surface were calculated to determine the worst position to meet the requirements of 10CFR71. For most cover designs evaluated the inertia loading for small angles of inclination at impact with the target surface were larger than for a horizontal position because of the slap-down effect. Different crushable materials were evaluated including the effect of their variation in crushing stress and locking strain. The design was optimized to limit the maximum inertia loadings for the worst impact position to a value of 100 g. 8 references

[en] The aim of the paper is to present a numerical model for a ballasted railway track that includes the dynamic effect of a moving train load and predicts the values of the vertical stiffness of the infrastructure. This model is therefore deemed to be a tool for the evaluation of the state of the track during service situations as well as a predictive model of the behaviour of the system. Consequently, it will be very useful when sizing the cross section of a new railway line is required.The main modelling tool is the finite element method. In regard to this, the application of damping elements to avoid the elastic wave reflection on the boundaries of the numerical domain will be studied. The proposed dynamic analysis consider the change in time of the value of the train load, but not the change in position along the tracks.In the end, a set of suggestions for the numerical model with moving loads will be summarize aiming for the mitigation of the unusual behaviour of the contact surface between the ballast and the sleepers. (Author)

[en] Over the last years rubber from scrap tyres has been reused in different civil works such as road embankments and railway platforms due to its resilient properties, low degradation and vibration attenuation. Unfortunately, this issue is still scarce. For instance, in Spain about 175.000 tonnes of scrap tyres were collected in 2014, of which only 0.6% were reused in civil works. Aiming to contribute to the reutilisation of large quantities of this waste material, this paper focuses on the analysis of unbound mixtures of granular materials with different percentages of rubber particles to be used as subballast layers. Mixtures are tested under cyclic triaxial tests so as to obtain their resilient modulus and evaluate their permanent deformations. It is found that as the rubber content increases, the resilient modulus decreases and the permanent deformation increases. Taking into account the usual loads transmitted to the subballast layer, the optimum rubber content that does not compromise the behaviour of the mixture is set in a range between 2.5% and 5% in terms of weight. (Author)