Code of practice for safety barriers used in traffic management within workplace environments with test methods for safety barrier impact resilience

2020 ◽  
Keyword(s):  
Traffic Management ◽  
Test Methods ◽  
Code Of Practice ◽  
Safety Barrier ◽  
Safety Barriers ◽  
Workplace Environments

Application of Void-Free Filling Technology for Additional Safety Barriers Creation during Uranium-Graphite Reactors Decommissioning

2015 ◽  
Vol 1084 ◽  
pp. 613-619 ◽  
Author(s):  
Andrey Izmestiev ◽  
Alexander Pavliuk ◽  
Sergey Kotlyarevsky
Keyword(s):  
Nuclear Reactors ◽  
Material Selection ◽  
Natural Material ◽  
Safety Barrier ◽  
Safety Barriers ◽  
Research Findings ◽  
Selection For ◽  
Reactor Space ◽  
Additional Safety

The paper presents the results of the best material selection for additional safety barrier construction during uranium-graphite reactors decommissioning. The research findings show that the best material for safety barriers is clay-containing natural material of various types with counter-migrational and counter-filtrational qualities. We have demonstrated a technology for void-free filling of cavities in the reactor space of under-decommissioning uranium-graphite reactors on the site of JSC Pilot and Demonstration Center for Decommissioning of Uranium-Graphite Nuclear Reactors (PDC UGR). This will make it possible to construct reliable man-made geo-barriers and prevent the release of radionuclides from the repository into the environment for thousands of years.

scholarly journals ANALYSIS OF THE IMPACT OF ROAD SAFETY BARRIERS ON REDUCING THE RISK OF DANGEROUS ROAD ACCIDENTS AND THEIR CONSEQUENCES

2020 ◽  
Vol 1 (46) ◽  
pp. 283-292
Author(s):  
Savostin-Kosiak D ◽  
◽  
Michalski Jacek ◽  
Keyword(s):  
Test Methods ◽  
Design Methods ◽  
Point Of View ◽  
The Road ◽  
Road Signs ◽  
Safety Barriers ◽  
Road Systems ◽  
Functional Features ◽  
Aided Design ◽  
The Impact

The weaknesses of the road systems were analyzed, including dangerous events generated by vehicle getting out of the road and consequent secondary dangerous events such as: driving over a barrier or other dangerous object located next to road or roofing of the vehicle. Particularly, the security, availability of technological solutions for protection barriers, columns and road signs on roads and bridges were considered. The preventive and protective functions of road equipment and engineering objects are given, which are adequate to the specific risk. Failures of safety barriers and road protection barriers and the consequences of their failures for people, properties and the environment were analyzed. Solutions for the construction of road barriers were analyzed in terms of: availability, the degree of reliability of their components and the possibility of maintaining risk within acceptable limits. The scope of fulfillment of required functional features, design methods, modern technological solutions, test methods and certification procedures were analyzed. Functional features of protective barriers regarding: the protection level, displacements and the level of impact intensity were taken into account. Literature point of view on aided design of protective barriers has been included which covers finite element method (method of sum of displacements) with appropriate analysis of forces, torques and displacements with CAD systems including use of LS-DYNA system for events and damage parameters. A large part of the publication deals with modern technological solutions and analyzes including design of protective barriers, modeling of their elements as well as modeling collisions with vehicles, taking into account the impact of the ground. KEYWORDS: PROTECTION BARRIERS, FAILURES OF PROTECTION BARRIERS, DESIGN METHODS, SECURITY OF PROTECTION BARRIERS

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