ANALYSIS OF THE DANGER OF EMERGENCY SITUATIONS IN THE CONSTRUCTION AND OPERATION OF GAS BOILER HOUSES

2021 ◽  
pp. 49-56
Author(s):  
Нелля Викторовна Колосова ◽  
Лариса Александровна Котова ◽  
Александра Александровна Высоцкая
Keyword(s):  
Emergency Situation ◽  
Gas Pipeline ◽  
Air Pressure ◽  
Pressure Waves ◽  
Compression Phase ◽  
Emergency Situations ◽  
Medium Pressure ◽  
Boiler Room

Целью исследований является анализ возможных аварийных ситуаций при разгерметизации газопровода, прилегающего к котельной и находящегося в ней, а также определение горизонтального радиуса действия ключевых поражающих факторов при аварии. В качестве примера произведен расчет аварийной ситуации для участка газопровода среднего давления. Определены значения максимального избыточного давления, импульса фазы сжатия воздушных волн давления и радиусов зон поражения при взрыве топливо-воздушной смеси. Даны рекомендации для профилактики возникновения аварийной ситуации. The purpose of the research is to analyze possible emergency situations during depressurization of the gas pipeline adjacent to the boiler room and located in it, as well as to determine the horizontal radius of action of the key damaging factors in case of an accident. As an example, an emergency situation was calculated for a section of a medium-pressure gas pipeline. The values of the maximum overpressure, the pulse of the compression phase of the air pressure waves, and the radii of the affected areas during the explosion of the fuel-air mixture are determined. Recommendations for the prevention of an emergency are given.

IMPLEMENTATIONS EMERGENCY RESPONSE SYSTEM IN CASE OF ACCIDENTS AND EMERGENCY SITUATIONS (ERA-GLONASS) FOR CARS AND TRUCKS IN UZBEKISTAN

2020 ◽  
Author(s):  
Akmal Rustamov
Keyword(s):  
Emergency Response ◽  
Call Center ◽  
Emergency Services ◽  
Main Idea ◽  
Emergency Situation ◽  
High Mountain ◽  
Additional Information ◽  
Emergency Situations ◽  
Emergency Response System ◽  
Response System

The paper addresses the problem of increasing transportation safety due to usage of new possibilities provided by modern technologies. The proposed approach extends such systems as ERA-GLONASS and eCall via service network composition enabling not only transmitting additional information but also information fusion for defining required emergency means as well as planning for a whole emergency response operation. The main idea of the approach is to model the cyber physical human system components by sets of services representing them. The services are provided with the capability of self- contextualization to autonomously adapt their behaviors to the context of the car-driver system. The approach is illustrated via an accident emergency situation response scenario. “ERA-GLONASS” is the Russian state emergency response system for accidents, aimed at improving road safety and reducing the death rate from accidents by reducing the time for warning emergency services. In fact, this is a partially copied European e Call system with some differences in the data being transmitted and partly backward compatible with the European parent. The principle of the system is quite simple and logical: in the event of an accident, the module built into the car in fully automatic mode and without human intervention determines the severity of the accident, determines the vehicle’s location via GLONASS or GPS, establishes connection with the system infrastructure and in accordance with the protocol, transfers the necessary data on the accident (a certain distress signal). Having received the distress signal, the employee of the call center of the system operator should call the on-board device and find out what happened. If no one answers, send the received data to Sistema-112 and send it to the exact coordinates of the team of rescuers and doctors, and the last one to arrive at the place is given 20 minutes. And all this, I repeat, without the participation of a person: even if people caught in an accident will not be able to independently call emergency services, the data on the accident will still be transferred. In this work intended to add some information about applying system project in Uzbek Roads especially mountain regions like “Kamchik” pass. The Kamchik Pass is a high mountain pass at an elevation of 2.306 m above the sea level, located in the Qurama Mountains in eastern Uzbekistan and its length is about 88km.The road to reach the pass is asphalted, but there are rough sections where the asphalt has disappeared. It’s called A373. The old road over the pass was by passed by a tunnel built in 1999. On the horizon, the snow-capped peaks of the Fan Mountains come into view. The pass is located in the Fergana Valley between the Tashkent and Namangan Regions.

Measurement of the Air Pressure for a Rotary Vane Compressor

2003 ◽  
Author(s):  
Yuan Mao Huang ◽  
Sheng An Yang
Keyword(s):  
Frequency Converter ◽  
Air Pressure ◽  
Cover Plate ◽  
Rotary Compressor ◽  
Compression Phase ◽  
Pressure Transducers ◽  
Compressor Rotor ◽  
Two Phases ◽  
Rotary Vane Compressor ◽  
Type Pressure

This study introduces an experimental method that can measure air pressures in the vane segments when a sliding-vane rotary compressor performs suction and compression phases in stable or unstable rotational speeds. When the air pressures of these two phases can be measured, the intake effect of the compressor’s inlet and the seal effect of the vane segments can be evaluated, respectively. Because a frequency converter provides unstable rotational speeds when it controls rotational speeds of a motor with a compressor, an encoder mounted on the output shaft of the motor was applied to record the angular location of the compressor rotor. Two strain gauge type pressure transducers were inserted into the cover plate of the compressor to measure air pressures in the vane segments. Comparing the signals of the encoder with pressure transducers, the air pressures in completions of suction and compression phases could be determined in stable or unstable rotational speeds. The air pressures when the compressor performed suction and compression phases were 99.5 kPa and 153 kPa, respectively, in 1400 rpm. The air pressure when the compressor performed suction phase decreased with the rotational speed faster than 800 rpm. The size or shape of the inlet port of the compressor should be enlarged or modified to provide the suction air pressure without dropping too much. The designed air pressure when the compressor performed compression phase was 244 kPa in 140 rpm, the manufacture precision of the compressor should be increased to decrease leakage.

scholarly journals Mobile Application Design Emergency Medical Call for the Deaf using UCD Method

2018 ◽  
Vol 12 (3) ◽  
pp. 168 ◽  
Author(s):  
Risald Risald ◽  
Suyoto Suyoto ◽  
Albertus Joko Santoso
Keyword(s):  
Hearing Loss ◽  
Emergency Situation ◽  
Emergency Call ◽  
Medical Emergency ◽  
Deaf People ◽  
User Centered Design ◽  
Emergency Situations ◽  
The People ◽  
Emergency Event ◽  
Audio Communication

<p>Deaf or hearing loss is a condition of inability to hear something, either totally or partially. Hearing loss greatly affects the life of a person in communicating with the people around him. Deaf people will be very difficult when in a medical emergency, this is because the medical emergency situation requires fast action.</p><p>          The Healthy Phone application is a mobile medical emergency call application that can help people with hearing impaired when in emergency situations. With the Healthy Phone application, the user only needs to select an icon that suits the situation encountered in touchscreen mobile device then the message will be sent to the nearest hospital.</p>                To search for icons corresponding to emergencies, the User Centered Design (UCD) method is used. This application is very helpful for deaf people because this application does not require audio communication and user location is also sent automatically to the nearest hospital. The results were analyzed using four emergency event scenarios with a total score of 87% and an average user time of less than 0:42 sec indicating that the study was successful in designing a mobile medical emergency call application according to user requirements.

METHODOLOGICAL ASPECT OF ASSESSING RELIABILITY OF MEDIUM PRESSURE GAS PIPELINES

2021 ◽  
pp. 97-107
Author(s):  
A.I. Pashentsev ◽  
A.A. Garmider
Keyword(s):  
Flow Rate ◽  
Gas Flow ◽  
Methodological Approach ◽  
Gas Pipeline ◽  
Methodological Aspect ◽  
Gas Pipelines ◽  
Gas Flow Rate ◽  
Medium Pressure ◽  
Reliability Calculation

The author’s vision of the methodological aspect of assessing the reliability of medium pressure gas pipelines is presented. Analysis of existing methods for assessing the reliability of gas pipelines with the identification of positive and negative features was carried out, a methodological approach to assessing the reliability of medium pressure gas pipelines by gas flow rate and pressure was developed and tested, and a scale for identifying the results of reliability calculation was developed. The test conducted on the example of a really working gas pipeline with a test for reliability showed its promise.

scholarly journals Probabilistic-deterministic approach of controlling the functionality of a technical system in normal and emergency operation modes

2018 ◽  
Vol 226 ◽  
pp. 04008
Author(s):  
Vladimir M. Zababurin ◽  
Marina A. Egorova ◽  
Yuliya A. Polyakova
Keyword(s):  
Open Systems ◽  
System Development ◽  
Emergency Situation ◽  
Emergency Operation ◽  
Technical System ◽  
Emergency Situations ◽  
Recovery Processes ◽  
Current State ◽  
Self Organized Criticality ◽  
Technical Systems

The main disadvantages of the existing methods of managing the current state of technical systems are revealed. A non-standard approach is proposed for managing the functionality of the system in emergency situations. The character of the dynamics of the recovery processes of the technical system is determined as its state approaches the emergency one on the basis of the recommendations of the theory of self-organized criticality (SOC). The physical criteria for assessing the current state of the technical system are revealed. The rationale for using the physical indicator of the functional destabilization of the system is given. The signs of the pre-emergency state of the technical system are considered. A grapho-analytical model for the development of an emergency situation has been developed. The fact of the inevitable increase in the entropy of the system upon its transition to an emergency state is established. Structuring of the system development process in an emergency situation is carried out in three stages. The methodology for estimating the pre-emergency state of complex open systems is presented. The advantages of the proposed approach to managing the state of technical systems in comparison with traditional ones are established.

scholarly journals Emergency: definitions, problems and solutions

2021 ◽  
Vol 17 (7) ◽  
pp. 15-19
Author(s):  
V.P. Мiroshnychenko
Keyword(s):  
External Environment ◽  
Emergency Situation ◽  
Anthropogenic Activity ◽  
Emergency Situations ◽  
Problems And Solutions ◽  
The Subject ◽  
Definition Of

Emergency situations constantly accompany the external environment and society bringing major material losses and human casualties. The definitions and general patterns for the development of emergency situations and their role in accidents and disasters were discussed. Actually, there is no single concept in the definition of an emergency. Based on the ana-lysis, the content of the subject was formulated: an emergency is a state of natural and anthropogenic activity in the external environment and society. The mechanism of the emergency situation development is presented. The reason for changing the normative definition of the concept of emergency situation has been substantiated.

scholarly journals Blood Group Detection using Matlab

2021 ◽  
Vol 9 (VI) ◽  
pp. 3089-3093
Author(s):  
Sujatha C. N
Keyword(s):  
Image Processing ◽  
Blood Group ◽  
Human Error ◽  
Group Identification ◽  
Group Testing ◽  
Emergency Situation ◽  
Blood Type ◽  
Morphological Operations ◽  
Laboratory Staff ◽  
Emergency Situations

Blood group testing is one of the vital tasks in the area of medicine, in which it is very important during emergency situation before victim requires blood transfusion. Presently, the blood tests are conducted manually by laboratory staff members, which is time consuming process in the emergency situations. Blood group identification within shortest possible time without any human error is an important factor and very much essential. Image processing paves a way in determining blood type without human intervention. Images which are captured using high resolution microscopic camera during the blood slide test in the laboratory which are used for blood type evaluation. The image processing techniques which include thresholding and morphological operations are used. The blood image is separated into sample wise and blood type is decided based on the agglutination effects in those sample images. This project facilitates the identification of blood group even by common people who are unaware of the blood typing procedure.

scholarly journals Influence of VANET System on Movement of Traffic Flows in Emergency Situations

2015 ◽  
Vol 27 (3) ◽  
pp. 237-246 ◽  
Author(s):  
Algimantas Kajackas ◽  
Vidas Žuraulis ◽  
Edgar Sokolovskij
Keyword(s):  
Reaction Time ◽  
Ad Hoc Network ◽  
Ad Hoc ◽  
Emergency Situation ◽  
Traffic Flows ◽  
Residual Velocity ◽  
Vehicle Collisions ◽  
Emergency Braking ◽  
Emergency Situations ◽  
Vehicle To Vehicle

The paper presents Vehicular Ad Hoc Network (VANET) system based on an analysis of the movement of a motorcade in an emergency situation. This analysis seeks to answer the question: when and under what conditions Emergency Message (EM) sent by Vehicle-to-Vehicle (V2V) system reaches the final target to help in preventing of serious accidents, such as multi-vehicle collisions. The model of calculation based on the key principles of vehicle braking enables finding the time to possible collision and the residual velocity of the vehicle. In the calculations, the average values of the driver’s reaction time are accepted; in addition, a sent emergency message is considered to be free of interference. Upon choosing different road and driving conditions, it is found what vehicle of the motorcade stops before the possible obstacle on emergency braking. The performance of vehicles with and without VANET system is compared.

scholarly journals Land subsidence modelling for decision making on groundwater abstraction under emergency situation

2020 ◽  
Vol 382 ◽  
pp. 403-408
Author(s):  
Masaatsu Aichi
Keyword(s):  
Decision Making ◽  
Monte Carlo ◽  
Uncertainty Analysis ◽  
Real Time ◽  
Land Subsidence ◽  
Null Space ◽  
Emergency Situation ◽  
Computational Time ◽  
Groundwater Abstraction ◽  
Emergency Situations

Abstract. This study presents an inversion scheme with uncertainty analysis for a land subsidence modelling by a Monte Carlo filter in order to contribute to the decision-making on the groundwater abstraction. For real time prediction and uncertainty analysis under the limited computational resources and available information in emergency situations, one dimensional vertical land subsidence simulation was adopted for the forward modelling and the null-space Monte Carlo method was applied for the effective resampling. The proposed scheme was tested with the existing land subsidence monitoring data in Tokyo lowland, Japan. The results demonstrated that the prediction uncertainty converges and the prediction accuracy improves as the observed data increased with time. The computational time was also confirmed to be acceptable range for a real time execution with a laptop.

scholarly journals RESEARCH OF PROPENSITY TO AGGRESSIVE BEHAVIOUR AMONG SCHOOLCHILDREN AND UNIVERSITY STUDENTS IN EMERGENCY SITUATIONS

2021 ◽  
Vol 12 (3) ◽  
pp. 55-65
Author(s):  
Sopivnyk I. V. ◽  
◽  
Choban O. V.
Keyword(s):  
Young People ◽  
University Students ◽  
Aggressive Behaviour ◽  
Emergency Situation ◽  
Direct Connection ◽  
Emergency Situations ◽  
The Third

The purpose of the article is to study the influence of emergency factors on the tenden-cy to aggressive behaviour among students. We conducted a study in Ukraine during 2016-2020 in emergency situations. In 2016, for the third year in a row, a military emergency situation con-tinued in eastern Ukraine, which left its mark on all the country's youth. In 2020, young people were exposed to a medical and biological emergency due to the Covid-19 pandemic. We made two diagnostic sections, respectively, in 2016 and 2020 using the same method of "Aggressive behaviour" (according to E. Ilin and P. Kovaliov). The results of the study show that there is a direct connection between a young person's stay in an emergency situation and an increase in the level of aggressive behaviour, in particular direct, physical one. Therefore, in emergency situations, it is necessary to develop and implement programs for the socio-psychological and pedagogical rehabilitation of young people.

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