scholarly journals Project Management of Lightning Protection Innovative Design

2021 ◽  
Vol 236 ◽  
pp. 04042
Author(s):  
Kang Ling

Lightning protection is becoming more and more important because the climate has changed in recent years and lightning occurs frequently. Given the lightning accidents in these years, this study adopted a new lightning protection device, increased deployment of lightning arresters, solved the problem that the lightning arresters cannot automatically exit the original lightning protection system after penetration. By optimizing the design of the lightning protection system, this study increased the system, reduced the occurrence and damage of lightning accidents. Statistics about the application of the system in an oil production plant show that the system has improved the plant’s economic gains. The investment decisionmaking, budget control, phased evaluation and calculation of the innovative project of the lightning protection system have been analyzed in depth. The engineering cost of each item, including the innovative techniques and the application of lightning protection systems, in the project was calculated separately, which improved the cost management of the innovative project.

2020 ◽  
pp. 58-64
Author(s):  
Л.Ю. Могильнер ◽  
Н.Н. Скуридин ◽  
Н.А. Власов ◽  
И.А. Хузяганиев

The issues of non-destructive testing carried out during the inspection of the state of lightning protection systems for fire and explosion hazardous facilities, are considered. Including the objects of the main oil and oil product pipelines were considered. It is indicated three types of tests have to be used: quantitative assessment of the necessary elements of the lightning protection system, visual and measuring control of the system elements using geometric and geodetic measurements, and measuring the electrical parameters of the elements of the lightning protection system. The features of control and measurements related to the calculation of protection zones against a direct lightning strike when using lightning rods of various types or their combinations are described. Examples of the estimation of the error in calculating the protection zones against a direct lightning strike are given.


Author(s):  
Anton Oboimov ◽  
Oleg Zolotarev ◽  
Ivan Cheremisenov ◽  
E. Fedoseeva ◽  
A. Tokarev ◽  
...  

Terrorism today is one of the main threats to human civilization. In recent years, international terror has proved its extreme cruelty, its readiness to stop at nothing in order to achieve its goals. As a result of committing terrorist acts, innocent people, children, women and old people suffer. For a terrorist, human life has no value. With the modern variety of potentially dangerous objects and their functional orientation, it is impossible to ensure safety with standard solutions, using uniform strategies, tactical schemes and techniques, and the same type of equipment. If we simply follow the path of ensuring the maximum level of safety, it may turn out that at most facilities the cost of the applied technological means will be many times greater than the cost of the technological equipment of the facility and even the facility itself. Hence, it follows that in order to create effective physical protection systems or to effectively modernize existing physical protection systems, it is necessary to analyze these systems, to identify the weakest and most protected places that need strengthening. At the same time, an important difference must be taken into account between physical protection systems and other safety systems used to protect against natural disasters (such as earthquakes, floods, tornadoes, hurricanes, etc.) and against abnormal operating conditions (such as fire, malfunctions in electrical equipment, etc.). Unlike human violators, security breaches are subject to strict laws and do not happen without reason. For example, the fire of a fire can only burn while there is fuel and oxygen. If one of these elements is removed, the fire will go out. Also, a fire cannot decide where and when it will occur, and how it will progress. Conversely, the human adversary (intruder) has the ability to decide whether to attack, when and how to attack, can adjust to the measures of the physical protection system to counter it, and possibly even outwit and defeat them. All this introduces a significant element of uncertainty into the process of analyzing and evaluating the effectiveness of the physical protection system. Taking into account the above, the task of developing a methodological approach to risk assessment when committing a terrorist attack using physical protection systems, taking into account the optimization of calculations of cost-intensive algorithms in real time, becomes more and more urgent. In this article, the authors attempt to create this approach.


Fire Safety ◽  
2018 ◽  
pp. 88-94
Author(s):  
Yu. Rudyk ◽  
O. Nazarovets ◽  
I. Golovatchuk

Introduction. The complexity and power of a natural phenomenon with hazardous and dangerous properties, which is lightning, should be adequately evaluated and prevented at the most accessible organizational and technical level of a particular society. According to the principle of ALARA (as low as reasonably achievable) applied in post-industrial countries, this risk, like others, should be reduced to the extent that is achievable. Neglecting to take a high risk of a hazardous event leads to excessive damage and large irreparable losses that a person or community cannot achieve sustainable development. Therefore, it is the complex, systematic approach in achieving safety, from the stage of assessment, to take into account both the characteristics of hazards, including fire in the relevant facilities, as well as personal, individual risk of death or injury. Purpose. Concerning to the situation with the systematic approach to technical regulation in Ukraine of such a safety sector as lightning protection, it is precisely this neglect that does not correspond to the current potential of the industrial, scientific, regulatory and social development levels. The purpose of this article is to analyze this problem in several areas. The state of technical regulation shows the priority of bringing normative documents into compliance with the legislation. Methods. Application of various methods of calculation, estimation, design and layout of the system allows realizing lightning protection system of buildings, equipment and people. To this aim, comparative characteristics of the passive and active lightning protection systems offered on the market are given; protective angle, rolling sphere, geometric methods of direct impact intercepting are compared. Results. Lightning is an unpredictable natural event; no one in the world is fully understand the mechanism of lightning, it is impossible for any standardization to provide 100% protection in all circumstances. In this view no liability shall attach to IEC and any other publications. Consideration of the implementation of the protection system grounded part is postponed with the condition of its full compliance with the selected components and the configuration of the system as a whole. System calculation of protection and assessment of the individual risk level is impossible without the internal elements and links in lightning protection system. A number of identified gaps in regulatory documents, the relationship between regulatory and supervisory bodies, users requests are suggested in the conclusions. The analysis of active normative and technical requirements to the lightning protection systems is conducted and the necessity of additional protective measures from the direct strike of lightning or voltage induction by a remote discharge by protective measures choice and charts of their setting is determined. On this basis the schemes of application of lightning protective systems from impulsive overvoltage are complemented, that substantially reduces the risk of fires and individual injures. Conclusion. The statistics of death and injury from lightning hazardous factors, losses from property, buildings and structures damages confirms that in the risk assessment, which is standardized in DSTU EN 62305-2, it is necessary to introduce a methodology that complies with the conditions of Ukraine. Further application in the design of lightning protection systems of the national standard ДСТУ Б.В.2.5-38:2008 went beyond the technical regulation system of Ukraine. Arrangement of system lightning protection depends on: risk assessment, owner response, and influence of regulatory and supervisory bodies. Criteria for fire hazard of a facility require a more complete analysis by the supervise bodies and the owner, the methodology of which has not been implemented for today. The development of such criteria is carried out in the workgroup 1 of the Technical Committee 315, which involves the scientists of the LSULS.


Author(s):  
B. Aparna ◽  
S. Madhavi ◽  
G. Mounika ◽  
P. Avinash ◽  
S. Chakravarthi

We propose a new design for large-scale multimedia content protection systems. Our design leverages cloud infrastructures to provide cost efficiency, rapid deployment, scalability, and elasticity to accommodate varying workloads. The proposed system can be used to protect different multimedia content types, including videos, images, audio clips, songs, and music clips. The system can be deployed on private and/or public clouds. Our system has two novel components: (i) method to create signatures of videos, and (ii) distributed matching engine for multimedia objects. The signature method creates robust and representative signatures of videos that capture the depth signals in these videos and it is computationally efficient to compute and compare as well as it requires small storage. The distributed matching engine achieves high scalability and it is designed to support different multimedia objects. We implemented the proposed system and deployed it on two clouds: Amazon cloud and our private cloud. Our experiments with more than 11,000 videos and 1 million images show the high accuracy and scalability of the proposed system. In addition, we compared our system to the protection system used by YouTube and our results show that the YouTube protection system fails to detect most copies of videos, while our system detects more than 98% of them.


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