scholarly journals RISK AND SAFETY LEVEL ASSESSMENT OF SHIP – BRIDGE COLLISION

Author(s):  
A. A. Golikov ◽  
◽  
J. A. Oleynik

Bridges located on maritime and inland waterways are defenseless objects of infrastructure. One of their main features is the restriction of navigation channels, both vertically and horizontally, while navigation conditions may often be challenged by unpredictable currents and whirlpools. A great threat to people and vehicles on or near the structure occurred in case of a collision with ships and the destruction of bridges. Also, the consequences of such accidents are considerable financial expenses, where the cost of the bridge is usually much more than the cost of the vessel itself. The article addresses the issue of types, factors, causes and consequences of ship-bridge collision accidents. In spite of the modern level of development in the maritime industry such accidents occur annually, thus this problem is considered to be relevant nowadays. It is necessary to take measures to increase the safety of navigation in appropriate zones. The article presents the procedure for assessing the level of safety and the stages of identifying risks by determining the probability of a collision with bridge spans, supports and other structures, also identifying the most defenseless places, as well as the possible consequences of such damage (ship, city, environment). In addition, the paper considered the methods of protecting the bridge from collision and methods for reducing navigational risk. The results of the research are the development of the recommendations for avoiding possible dangers, mitigation of consequences, and reducing risks of vessel-bridge collision. It is proposed to form an “intellectual” zone in the navigable water area under the bridge to minimize the risks and consequences of an emergency. As a basic concept, it is recommended to use foreign and domestic experience in implementing the e-navigation strategy in the coastal zone and in the operational VTS areas. The article describes the implementation of modern marine technologies, such as virtual navigation aids and technologies of additional reality, which will significantly improve monitoring of the environment. Therefore, this introduction will reduce the risk of an emergency. Ensuring the full spectrum of available methods is necessary to determine risk and protect bridges from accidents. Such an approach shall allow not only to assess the risk of ship-bridge collision, but also to introduce additional active control elements during navigation in dangerous zones.

Author(s):  
I. F. Gorlov ◽  
A. A. Mosolov ◽  
G. V. Komlatskiy ◽  
M. A. Nesterenko ◽  
K. D. Nimbona ◽  
...  

The article presents materials on the study of the possibility of reproduction and increase in the herd of highly productive cows through the use of embryo transplantation technology. The classical (in vivo) and more modern, developing (in vitro) methods of embryotransfer, their positive and negative sides are considered in detail. The possibility of accelerating the breeding process by using the method of transplantation, in which from one cow can be obtained from 10 to 100 calves, which will allow for 4-5 years, almost any herd (of any size and breed) with the help of biotechnology to turn into a cattle-breeding enterprise of the most modern level. At the same time, heifers obtained from unproductive cows can be used as "surrogate" mothers who are transplanted with the best donor embryos, which allows to obtain a full-fledged offspring adapted to local environmental conditions. A detailed scheme of obtaining, evaluation, storage, as well as the cost and economic effect of embryo transplantation was calculated, the market was evaluated, the required annual volume of transplants and the number of donor cows for large livestock farms were determined. As a positive example of "Scientific-production enterprise "Centre of biotechnology and embryo transfer" in 2014, implemented a project for accelerated replacement and genetic improvement of the dairy herd, engraftment averaged 57-69%, and the economic effect of the enterprise from getting a single animal by the method of embryo transfer, compared with imports of similar close in quality, ranged from 60 to 100 thousand rubles on his head. It is shown that it is necessary to organize at the state level a developed service for embryo transplantation to reduce the cost of embryo transfer and the possibility of creating in a short time in the country's own highly productive breeding nucleus of dairy and beef cattle, which will reduce, and in the future completely eliminate, import dependence on cattle products.


2019 ◽  
Vol 265 ◽  
pp. 02016
Author(s):  
Vladimir Karetnikov ◽  
Sergey Rudykh ◽  
Aleksandra Ivanova

Survey works on inland waterways can be contingently divided into two directions. The first ones are directed at maintaining the given dimensions of the waterway and are carried out with the use of technical fleet vessels, which includes the dredging fleet. At the same time the basis creation, the results verification and the control of the survey works implementation are carried out by the survey party. The main types of work here are surveying and trawling works, the implementation of which is carried out at the present time on the inland waterways of Russia using geo information technologies, which makes it possible to improve the quality and efficiency of their realization. Such an approach, firstly, has a positive effect on the implementation of the navigational hydrographic support system of navigators, including in the part of electronic cartography, and secondly, it allows to provide the survey works realization at the modern level. The most effective approaches and methods of modern geo information technologies application, implemented for the collection and processing of high-precision bathymetric information and positioning data to ensure the navigation safety on the inland waterways of the Russian Federation, are considered in the paper.


2021 ◽  
pp. 69-79
Author(s):  
V. V. GRITSAN ◽  

The article presents the results of surveys of 311 class IV hydraulic structures carried out in 2016-2020 in the Moscow region. All the reservoirs of the surveyed hydraulic units were classified according to their characteristic features, the technical condition of culverts and dams was assessed, there was established the safety level of both separate structures and hydraulic units as a whole. During the surveys, the technical parameters of the surveyed structures were established, the state of each structure and the hydraulic unit as a whole was assessed, a possibility of their accident and a risk level for the downstream areas were considered. At the same time, recommendations were developed for the elimination of serious damage and, with the help of an examination, the amount of the cost of the necessary repair work was determined. The paper also assesses the issues of the ecological state of the areas where the hydraulic units are located and the hydraulic units themselves as blocks of the ecological framework of the territories.


2021 ◽  
Author(s):  
Schuyler D. Smith ◽  
Jin Choi ◽  
Nicole Ricker ◽  
Fan Yang ◽  
Shannon Hinsa-Leasure ◽  
...  

Effective monitoring of antibiotic resistance genes and their dissemination in environmental ecosystems has been hindered by the cost and efficiency of methods available for the task. We developed a method entitled the Diversity of Antibiotic Resistance genes and Transfer Elements-Quantitative Monitoring (DARTE-QM), a system implementing high-throughput sequencing to simultaneously sequence thousands of antibiotic resistant genes representing a full-spectrum of antibiotic resistance classes commonly seen in environmental systems. In this study, we demonstrated DARTE-QM by screening 662 antibiotic resistance genes within environmental samples originated from manure, soil, and animal feces, in addition to a mock-community used as a control to test performance. DARTE-QM offers a new approach to studying antibiotic resistance in environmental microbiomes, showing advantages in efficiency and the ability to scale for many samples. This method provides a means of data acquisition that will alleviate the obstacles that many researchers in this area currently face.


2020 ◽  
Vol 17 (5) ◽  
pp. 130-163
Author(s):  
O. V. Tarovik ◽  
O. M. Mudrova

Demand for low-tonnage transportation of LNG requires improved logistics. Assessing the value of all parts of the supply chain is an important component of solving the problem of optimizing transportation costs for both consumers and LNG suppliers. In connection with tightening of environmental requirements regarding bunker fuel, the task of optimizing the supply of LNG for water transport by the cost of transportation becomes particularly relevant.The objective of the study is to develop a universal approach to estimating the cost of transporting low-tonnage LNG for bunkering vessels in the Russian Federation.The research methodology is focused on the analytical method based on a system-structural approach.As part of the departmental project of the Russian Ministry of Industry and Trade «Development of  gaspowered fleet for navigation in coastal waters and inland waterways», the authors developed technical and economic models for calculating the unit cost of LNG transportation by road and water. To calculate the unit cost of LNG transportation by rail, the data of TMkarta information and reference system were used. Based on model calculations and data of TMkarta system, regression relations were obtained that allow one to determine the cost of transportation for various options of transport and technological schemes based on a limited set of parameters. An approach has also been proposed for estimating the cost of LNG transshipment. The regression ratios were tested for selected routes. As a result,conclusions were drawn about the most effective LNG transportation options.


2018 ◽  
Vol 90 (4) ◽  
pp. 659-666
Author(s):  
Bartosz Dziugiel ◽  
Zdobyslaw Jan Goraj

Purpose The purpose of this study is to investigate the influence of the technical and operational specifications of the Small Aircraft Transport System (SAT/SATS) to the achieved safety level. Design/methodology/approach Safety estimation was made with the use of mathematical model of safety of light aircraft in commercial operations developed on the basis of Federal Aviation Administration (FAA) data. The analysis was conducted for two different SATS business models based on Direct AiR Transport (DART) concept. It allowed for the investigation of the impact of technical specifications of the aircraft included into the SATS fleet as well as the selected elements of the applied business model on SATS safety level. Findings It was found that the proposed changes to DART system resulted in a significant improvement of safety. Mean Time Between Incidents and Accident (MTBIA) increased by 200 per cent. Additionally, the introduced alterations impacted the weights of particular domains and pilot’s error became less critical than the technical reliability. Practical implications It was shown that the application of new requirements influences both the safety level and the cost of operation, which was demonstrated within the ESPOSA and DART projects. Additionally, it was indicated that further effort to improve the light aircraft safety is absolutely necessary. Originality/value Originality consists in combining in one mathematical model both the aircraft configuration and the rules for business operation. Optimization of selected parameters of the system leads to a significant reduction in the accident number and to keeping the cost increment at a reasonable level. It was also found that the resulted improvement sometimes cannot be sufficient to consider a small aircraft operation fully safe, mainly owing to the numerous restrictions because of its small weight and loading capacity.


Author(s):  
Ankit Bansal ◽  
Michael F. Modest ◽  
Deborah Levin

Full-spectrum k-distribution (FSK) and multi-group FSK approaches make it possible to evaluate radiative fluxes at a fraction of the cost needed for line-by-line calculations. However, the required k-distributions need to be assembled from accurate absorption coefficient data for each flow condition, which is computationally expensive. An accurate and compact narrow-band k-distribution database has been developed for the most important species encountered in hypersonic nonequilibrium flow. The database allows users to calculate desired full-spectrum k-distributions through look-up and interpolation. Strategies for k-distribution data generation are outlined. The accuracy of the database is tested by comparing narrow-band mean absorption coefficients and narrow-band emissivities with those obtained from line-by-line calculations. Application of the database to construct full-spectrum k-distributions accurately and efficiently is discussed, and results from a number of heat transfer calculations and cpu-time studies are presented.


Author(s):  
Sirous F. Yasseri ◽  
Peter Menhennett

A key principle for achieving Tolerable Risk under the UK Health and Safety Executive’s (HSE) approach is the reduction of risks to “As Low As Reasonably Practicable” or ALARP. This principle is founded on the ideal of reducing risks to a point of diminishing returns where additional risk reduction would cost “disproportionally” more than the risk reduction benefit achieved. The HSE approach of estimating the degree of disproportionality between the cost and benefits associated with a potential risk reduction measure is a variation of the Cost Effectiveness approach to ALARP Evaluation. A probabilistic cost-benefit analysis method is outlined for evaluating design options and establishing whether the conditions of ALARP are met. This paper demonstrates the value of probabilistic cost-benefit analysis for the selection of a target safety level and also presents an example of its practical application by way of a case history.


Author(s):  
Sung-In Park ◽  
Su Kyeong Kim ◽  
Sang Jin Kim ◽  
Jeom Kee Paik

Abstract This paper introduces a preliminary risk assessment method carried out on a newly developed floating power plant. The small-scale floating power plant has been developed to provide electric power for areas on demand, and this is a kind of a new concept system which is not clearly classified in the maritime industry. To grant the feasibility for this novel system design, a set of risk assessment activities is essentially required, and in this context, a hazard identification (HAZID) study is conducted at the very early stage of the plant design. The aims of this HAZID study are to verify the inherent safety of the initial plant design and to provide any recommendations on the next design stages. For this purpose, the potential hazards are identified in view of personnel, structural, and asset effects in association with the operation of the power plant and all the identified hazards and relevant risks are assessed with the defined criteria using a simple risk matrix. As a result, the risk or safety level of the conceptual plant design is estimated, and some design changes are suggested to give a better balance between the safety and the cost of the plant system. Overall, this paper shows how the primitive risk assessment techniques are utilized as a practical engineering tool in the development of the marine system.


2018 ◽  
Vol 20 (3(68)) ◽  
pp. 89-95
Author(s):  
D.V. KARTYSHEV ◽  
O.M. KOTLUBAY

Topicality. Having carefully considered the Port Consumption Calculation Methodology presented for public discussion, Seaports Development Strategy Committee of Ukrainian Port Association's(“Ukrport”) notes some positive aspects related to the preparation of this important document, which is intended to streamline the pricing process in the area of charging port fees and to bring them up to necessary and sufficient level to ensure the normal operation of port facilities and navigational facilities, and, accordingly, the safety of navigation in the Ukrainian state responsibility zone. It should also be emphasized that the return to gross tonnage charging, rather than unit modulus, as is now the case, is a significant positive step and will contribute to greater acceptance and transparency of the Development Port Consumption Calculation Techniques. The same applies to the applied approach, which divides the port dues rate into two components: operating and investment. This is all the more important that the global approach, which uses most ports, considers port charges as a means of covering current costs for the maintenance of relevant facilities and facilities for which no commercial gain is foreseen. The commercial purpose of port facilities is to provide efficient and safe service at the port of vehicles and overload of goods, which is what creates the commercial benefit that is being generated by all participants in the transport process at the port. This is precisely because ships that use the port only as a harbor-warehouse are largely exempt from paying port duties in world practice. That is, the only source of formation of the investment component of port dues may be only depreciation of the relevant facilities.Aim and tasks. A critical assessment of the construction of a methodology for calculating port fees. As a rule, in the world for port facilities, a linear method is used to calculate depreciation charges, but there is also the possibility to use certain methods of accelerated depreciation, which, however, operate simultaneously with the appropriate methods of transfer of losses caused by accelerated depreciation on the former or subsequent time periods, and simply to levy from the shipowner funds for future development is economically insolvent and does not correspond to good maritime practice. Unfortunately, this circumstance, besides the berthing fee, has not been taken into account at all when developing the Port Taxation Calculation Method, which is presented on the website of the Ministry of Infrastructure for public discussion. Thus, in the second paragraph of item 1.1. Section II of the general provisions reads as follows: "The investment component of the berthing rates is charged to port operators and other business entities engaged in economic activities using berths for handling, handling and storage of goods, servicing ships, and other facilities. with these types of economic activity. "Research results. Next, it should also be noted that in the presented method: the base rate of the ship's fee includes: coverage of planned operating costs in accordance with the intended purpose of the ship's fee, planned operating and investment costs associated with the implementation of activities for the operation and development of the search and rescue system in the marine search and rescue region of Ukraine, marine research enterprises and river transport belonging to the sphere of management of the Ministry of Infrastructure of Ukraine. The base rate of the ship's fee is determined depending on the ship's specialization, taking into account the coefficients of K bulk carrier, K tanker, K container, K ro-ro, K passenger, other, reflecting the effect of the design features of the vessels on the ability to provide transportation of goods and / or passengers, while gross tonnage of these properties itself by itself already takes into account through the appropriate calculation methodology.Base rate for lighthouse - coverage of planned operating and investment costs for the provision and development of navigational and hydrographic navigation support;the base rate of the administrative fee includes: covering the costs of fulfilling Ukraine's obligations to comply with the legislation and regulations of navigation, international agreements of Ukraine with regard to navigation, the consent to be bound by the Verkhovna Rada of Ukraine, fulfillment of other tasks, in accordance with the international obligations imposed on the enterprises of the maritime industry, as well as merchant shipping, navigation on inland waterways, navigational and hydrographic provision of navigation, as well as in the field of maritime safety and river transport (except for the navigation safety of vessels of the fleet of the fishing industry);That is, the base rate of the administrative fee also includes the costs, which are already somehow foreseen in the ship and beacon fees.Conclusion. Having analyzed the rules of law, we can conclude that port dues are a fee for specific services to the shipowner who pays these fees. In the provision of these services, fixed assets and other non-current assets are very worn out, both physically and morally, in connection with which there is a need to direct port charges, first of all, this is the main source of renovation, repair, reconstruction and construction of hydro-technical constructions, dredging works to maintain the necessary depths in the water areas and approach channels of sea ports of Ukraine. In addition, the basis of the system of formation of tariffs for port dues is the cost of specific services received by shipowners. Control of the cost of these services with the help of a list of costs (covered by port fees), which are included in the cost, makes it possible to establish reasonable, competitive tariffs for port dues. At the same time, tariffs are kept at the market level, and if necessary, they may be justified (based on the analysis of cost of services) for the purpose, on the one hand, to ensure sufficient funds to cover costs included in cost, and on the other hand to ensure the attractiveness of port dues for shipowners, cargo owners in order to attract more cargo to seaports, primarily transit.


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