scholarly journals COMPLIANCE WITH LIGHTNING LOCATION SYSTEMS INDICATORS FOR RISK ASSESSMENT, LOSS PREVENTION, INVESTIGATION OF CAUSES

Fire Safety ◽  
2020 ◽  
Vol 35 ◽  
pp. 54-62
Author(s):  
Yu. Rudyk ◽  
V. Shunkin
Keyword(s):  
Risk Assessment ◽  
Fire Safety ◽  
Life Safety ◽  
Lightning Protection ◽  
Strong Wind ◽  
Loss Prevention ◽  
Normative Documents ◽  
Location System ◽  
Lightning Location System ◽  
Location Systems

Introduction. Thunderstorms in general is produced by atmospherically (climatic) processes, combined with additional hazardous effects. Thus, strong wind, flash flooding and hail causes a long time consequences including damages and injuries. Lightning protection systems are designed and projected in accordance with the requirements of the normative documents, which not always included measures of personal safety and guaranteed absences of injuries. Improving the state of life safety and loss prevention are based on standards and rules, which depend on the results of risk assessment, and investigation of cause’s events. Purpose. The purpose of this article is to analyze this problem in several areas concerning the situation with a systematic approach to the technical regulation in Ukraine of such a sector of life safety as the lightning protection. Methods. Methods of research: calculations using a mathematical model; comparison of the results of the calculation, forecasting of the boundary parameters of the technical condition and monitoring of the lightning location systems properties; examination, qualification, definition of indicators of lightning location system in the composition of the geographical informational system, taking into account laying conditions. Also comparison of different methods for calculating positioning coordinates is given. Results. One of the components of the system lightning protection - the parameters of positioning coordinates of the lightning location system is investigated. The location of lightning strike points is not specified in the applicable fire safety regulations, although this criterion is often used precisely to set fire safety requirements: for buildings, utilities, fire alarm systems, and more. Measures are proposed for implementing test methods and means and incorporating them into standardized technical solutions. In this respect, there can be no claim to the International Electrotechnical Commission and its publications. It is suggested to take into account a number of identified gaps in regulatory documents, relationships between regulators and supervisors, user requests. The analysis of the current normative and technical requirements for the accuracy of coordinates positioning in lightning location systems. On this basis, methods of investigating the causes of events are supplemented, which simplifies the application of impact analysis and the development of protective measures. Conclusion. Determination of the positioning coordinates of lightning stroke is not regulated in the current normative documents on fire safety, although this criterion is often used precisely when establishing requirements for fire safety: to buildings, cable installations, to the installation of fire automatics systems and to others. It is proposed to take advantage of the accuracy in determining the location using mapping geoinformation systems and services in the analysis of indicators of the system of thrust. Conducted theoretical studies of indicators of the lightning location systems have established their relevance for risk assessment methods, measures to prevent losses and to investigate the causes of death, injury to living creatures and other property damage events.

scholarly journals Application of an Integrated Risk Assessment Software to Quantify the Life Safety Risk in Building during a Fire

2018 ◽  
Vol 247 ◽  
pp. 00011
Author(s):  
Adam Krasuski ◽  
Mariusz Pecio
Keyword(s):  
Risk Assessment ◽  
Fire Safety ◽  
Assessment Method ◽  
Theoretical Description ◽  
Quantitative Risk Assessment ◽  
Life Safety ◽  
Computationally Efficient ◽  
Safety Level ◽  
Integrated Risk Assessment ◽  
Risk Assessment Method

We develop an integrated probabilistic risk assessment software called Aamks for the purpose of quantifying the life safety level of people present in buildings in the context of fire safety design. The software implements easy to use and computationally efficient quantitative risk assessment method - multisimulation. The method consists in deterministic sub-models and probabilistic techniques for sampling and quantifying the fire safety level by means of failure probabilities, individual and societal risk. Following the theoretical description of the method, a case study of a five storey hotel building 20.000 m2 is elaborated and discussed as proof of concept.

The Lightning Preventing Methods for 10kV Distribution Lines

2013 ◽  
Vol 310 ◽  
pp. 371-374
Author(s):  
Qing Hao Wang ◽  
Yun Shan Zhang ◽  
Yang Su ◽  
Gang Li ◽  
Bo Liu ◽  
...  
Keyword(s):  
Distribution System ◽  
Assessment Methods ◽  
Main Direction ◽  
Lightning Protection ◽  
Actual Situation ◽  
Location System ◽  
Distribution Lines ◽  
International Distribution ◽  
Lightning Location System ◽  
Distribution Line

The importance and necessity of the domestic and international distribution lightning direction and governance of the distribution line lightning damage are described, and the distribution line lightning protection assessment methods and procedures and how to choose the arrester combined with the actual situation are discussed. The lightning location system and counter combination is a means to test the merits of lightning protection components are deep-seated argued, and it will be an important part of future governance lightning disturbance of distribution lines. To prevent induction lightning damages is the main direction for distribution system is clarified through lightning damages prevention of 10kV Langshi line.

scholarly journals The use of the PN-EN 62305-2 standard to the risk assessment of losses in the equipped object in station- devices of the railway traffic controlling

2018 ◽  
Vol 180 ◽  
pp. 05006
Author(s):  
Zofia Wróbel
Keyword(s):  
Risk Assessment ◽  
Risk Analysis ◽  
Public Services ◽  
Lightning Protection ◽  
Control Panel ◽  
The Public ◽  
Railway Traffic ◽  
Correct Estimation ◽  
Atmospheric Discharges

The valuation of the risk of losses makes easy the correct estimation of resulted threats as a result of atmospheric discharges and harms connected to them. Qualifying the need of lightning protection use for the object, we ought to take into account the risk R for the object and for the public services devices. In every case of examining risks we ought to fulfill: the identification of components RX forming the risk, counting the identified components of the risk RX, the entire risk R, identify the tolerated risk RT and compare the risk R with the tolerated value RT. As a result of such analysis we can come to a decision about the use of protection resources. In the report was realized the risk analysis of devices damages for a chosen object - the signal box with installed station - relaying devices of the railway traffic controlling with a computer adjustable control panel. From the realized analysis results that DEHN Risk Tool is a useful tool for the risk analysis of lightning losses in buildings, making possible the improvement of the calculations process, especially in the range of the choice of proper protection resources.

BASIC APPROACHES TO THE HIGHER EDUCATION FEDERAL STATE EDUCATIONAL STANDARD OF GENERATION 3 ++ IN SPECIALTY “FIRE SAFETY”

2021 ◽  
Vol 4 ◽  
pp. 82-86
Author(s):  
Seferyan E. ◽  
Keyword(s):  
Higher Education ◽  
Fire Safety ◽  
Professional Activity ◽  
Federal State ◽  
Ministry Of Education ◽  
Normative Documents ◽  
Educational Standard ◽  
Empirical Level ◽  
Basic Approaches ◽  
State Educational

Purpose. The article analyzes the normative documents of the Ministry of Education and Science and the Ministry of Labor, which underlie the development of the basic educational curriculum for the new Federal State Educational Standard 3 ++ majoring in 20.05.01 “Fire safety”. The types of professional activity in the specified specialty are considered, the range of tasks is outlined when introducing an independent assessment of qualifications into the institute system of specialists training. The principle has been determined, which, if not observed, will result in the unbalancing of specialist program. Methods. Theoretical level methods were used within the framework of the research, in particular, analysis, as well as methods of the empirical level – description, comparison and testing. Findings. The research resulted in the development of a scheme for a two-stage education system in the implementation of the Federal State Educational Standard of Higher Education 3 ++, and the direction of specialization for a specialist program has been determined as well. Research application field. The results obtained will help to further develop the main professional educational curricula of a specialist program in two areas, in which graduates will be equally in demand. Conclusions. Taking into account the above said, the study will progress in developing a separate specialist program, aimed at the needs of the labor market in the field of fire safety (engineering, preventive and managerial personnel of the services providing fire safety in an organization).

The concept of calculating the actual limit of fire resistance of building structures

2021 ◽  
pp. 12-17
Author(s):  
Юрий Николаевич Шебеко ◽  
Алексей Юрьевич Шебеко
Keyword(s):  
Fire Resistance ◽  
Fire Safety ◽  
Building Structures ◽  
Safety Level ◽  
Fire Temperature ◽  
Normative Documents ◽  
Software Complex ◽  
Temperature Regimes ◽  
Actual Fire

Проведен краткий анализ понятий, связанных с расчетом пределов огнестойкости строительных конструкций. Дано определение термина «фактический предел огнестойкости», которое отсутствует в нормативных документах по пожарной безопасности. Отмечено, что это связано с использованием на практике значений пределов огнестойкости, определенных для стандартных температурных режимов пожара, в то время как на практике указанные температурные режимы, как правило, отличаются от стандартных. Предложена концепция определения фактического предела огнестойкости, основанная на моделировании воздействия на строительную конструкцию температурного режима реального пожара (например, с помощью программного комплекса FDS 6). The brief analysis of definitions connected with estimation of fire resistance limits of building structures is conducted. There is given the determination of term “actual fire resistance limit” that is absent in fire safety normative documents. It is caused by practical application of the fire resistance limits determined for standard temperature regimes of fires only, but at the same time the temperature regimes of real fires as a rule differ from the standard regimes. There is proposed the method for determination of the actual fire resistance limit based on the modeling of influence of the real fire temperature regime on buildings structures. This modeling can be made by an application of CFD methods (for example, with the help of FDS 6 software complex). The required reliability of the building structure is considered. The proposed method can solve the problem of practical applicability of certain structural unit during designing buildings and structures, for which the use of the resistance limits obtained for the standard fire temperature regimes can lead to unjustified economic expenditures without an appropriate elevation of fire safety level of the object.

scholarly journals VALIDATION OF RISK INDICATORS IN ASSESSING THE SAFETY OF ELECTRICAL EQUIPMENT BOILER HOUSE IN THUNDERSTORM

Fire Safety ◽  
2021 ◽  
Vol 38 ◽  
pp. 24-31
Author(s):  
Yu. Rudyk ◽  
O. Nazarovets ◽  
I. Golovatchuk ◽  
N. Beznos
Keyword(s):  
Risk Assessment ◽  
High Risk ◽  
Electrical Equipment ◽  
Risk Indicators ◽  
Economic Losses ◽  
Individual Risk ◽  
Lightning Protection ◽  
Protection Measures ◽  
Risk Of Death ◽  
Boiler Environment

Introduction. Today requires the introduction and arrangement of modern enterprises automation of the technological process using various electronic and electrical equipment. The breakdown of one sensor leads to a stoppage of the technical process and thousands of losses. This equipment is sensitive to impulse overvoltages that occur for various reasons, as well as when hit by lightning. There is a misconception that the danger of lightning arises only when struck directly, forgetting about the socalled secondary phenomena, namely electromagnetic and electrostatic pulses. Pulse overvoltage is a short-term increase in voltage above the allowable value. Lightning protection systems are designed and designed to protect objects from dangerous lightning.Purpose. Given the automation of the process and the saturation of boilers with electronic and electrical equipment, there is a high risk of lightning and high potentials, which can lead to large-scale accidents. The purpose of this article is to validate the risk indicators for the boiler environment that occur during a thunderstorm.Methods. The use of various methods of calculation, assessment and ordering of risks during the design and layout of the system allows to implementation system lightning protection of buildings, equipment and people. General principles of risk assessment for the boiler environment must take into account: risk and determine the need for protection; the contribution of various risk components to the overall risk; the effect of various protection measures to reduce risk; selection of protection measures taking into account their economic efficiency.Results. Neglecting the high risk of a dangerous event leads to excessive damage and m irreparable losses, with which a person or community will not be able to achieve sustainable development. Therefore, it is a comprehensive, systematic approach to achieving safety, starting from the assessment stage, should take into account both the characteristics of the hazard, including a fire in the relevant facilities, and personal, the individual risk of death or injury. Lightning is an unpredictable natural event, no one in the world fully understands the mechanism of lightning and it is impossible to provide 100% protection under any circumstances under any standardization. For this purpose, the following calculations are given: loss of human life, including injuries; loss of the ability to provide public services; losses of cultural heritage and economic value of the building (structure) and economic losses required for the installation and operation of the system. Based on the obtained data, it is seen how the reduction of each risk is achieved depending on the proposed solution and the economic effect in general.Conclusion. Statistics on deaths and injuries from lightning hazards, losses from damage to property, buildings and struc-tures confirm that in risk assessment, which is standardized in DSTU EN 62305-2, it is necessary to introduce a methodology that would meet the conditions of Ukraine. The arrangement of the lightning protection system depends on the risk assessment, the reaction of the owner, the influence of control bodies. Therefore, it is important to decide on fire protection measures in lightning risk assessment procedures, but it can also be taken regardless of the results of the risk assessment where there is a desire to avoid unacceptable risk. Equipment that is often associated with two different services, e.g. power lines and data lines suffer a lot of surge damage. This case is not covered by the RX risk component. However, appropriate protection measures can be selected and established (see IEC 62305-4).

scholarly journals FIRE RESISTANCE OF BUILDING STRUCTURES OF FLAMMABLE AND COMBUSTIBLE LIQUIDS STORES

Fire Safety ◽  
2019 ◽  
pp. 5-9
Author(s):  
O. I. Bashynskiy ◽  
M. Z. Peleshko ◽  
T. G. Berezhanskiy
Keyword(s):  
Fire Resistance ◽  
Fire Safety ◽  
Theoretical Calculations ◽  
Fire Hazard ◽  
Building Structures ◽  
Safety Measures ◽  
Normative Documents ◽  
Size Number ◽  
Literary Sources ◽  
Combustible Liquids

The article is dedicated to the fire resistance limit of building structures of the objects for the storage of flammable and combustible liquids. Today, oil stores are very important elements of the oil supply system in Ukraine. The analysis of literary sources has shown that fires in oil stores cause extra fire hazard of surrounding objects. Increasing of their scales requires further improvement of fire safety measures during planning and using of oil stores. Fires in such buildings are tricky and large; they cause great harm and often lead to the death of people; their liquidation is very difficult. Theoretical calculations shown that the collapse of structures of the packaged oil stores and, as a result, significant material losses and the threat to people's life and health, were resulted from the incorrect selection of building structures and the discrepancy between the fire resistance of these structures and the applicable norms and requirements for such buildings. Fire Safety, №34, 2019 9 Fire resistance limit of the metal double-T pillar made of steel ВСт3пс4 (profile size number 30) was calculated in the article. Such constructions are used in oil stores. The obtained fire resistance limit of a metal double-T pillar is about 16 minutes (R 16). According to the normative documents for buildings of this type (the degree of fire resistance of the building – III), it should be 120 minutes (R 120). Even if the calculation method has an error due to the choice of another steel grade, objectively none of the double-T profiles from the assortment list would provide proper fire resistance limit.

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