Use Of New Equipment Research Articles

Innovation Of Administrative Services In Pemurus Village In South Banjarmasin Sub-District, Banjarmasin City

This research aims to find out about the innovation of administrative services in Pemurus Village in South Banjarmasin District, Banjarmasin City. Innovation in research is defined as a planned change in the form of ideas, ideas, new objects/objects or technology and the use of new equipment within the scope of government agencies, namely urban village. The type of research used is a descriptive study with a qualitative approach. The findings in the study are that Pemurus Dalam Village participates in innovating administrative services with the siPalui Application, namely Palui Mobile, which can be accessed by residents to get mail services in all urban villages in Banjarmasin city only through Smartphones, instagram and whatsApp. The existing facilities are quite good and the condition of the village office is comfortable and clean and the office employees are ready to serve the community who want to take care of administration/certificates and others. This readiness is also stated in the instagram account of the village office and a whatsApp number has been provided to communicate which means that the Village Management has carried out delivery innovations. However, this application often experiences network disruptions so that village employees cannot run the application and also for a while the application cannot be accessed due to application updates and application system maintenance.

A discrete-event simulation model for assessing operating room efficiency of thoracic, gastrointestinal, and orthopedic surgeries.

In hospital management, pinpointing steps that most enhance operating room (OR) throughput is challenging. While prior literature has utilized discrete event simulation (DES) to study specific strategies such as scheduling and resource allocation, our study examines an earlier planning phase, assessing all workflow stages to determine the most impactful steps for subsequent strategy development. DES models real-world systems by simulating sequential events. We constructed a DES model for thoracic, gastrointestinal, and orthopedic surgeries summarized from a tertiary Chinese hospital. The model covers preoperative preparations, OR occupation, and OR preparation. Parameters were sourced from patient data and staff experience. Model outcome is OR throughput. Post-validation, scenario analyses were conducted for each department, including: (1) improving preoperative patient preparation time; (2) increasing PACU beds; (3) improving OR preparation time; (4) use of new equipment to reduce the operative time of a selected surgery type; three levels of improvement (slight, moderate, large) were investigated. The first three improvement scenarios resulted in a 1%-5% increase in OR throughput across the three departments. Large reductions in operative time of the selected surgery types led to approximately 12%, 33%, and 38% increases in gastrointestinal, thoracic, and orthopedic surgery throughput, respectively. Moderate reductions resulted in 6%-17% increases in throughput and slight reductions of 1%-7%. The model could reliably reflect OR workflows of the three departments. Among the options investigated, model simulations suggest that improving OR preparation time and operative time are the most effective.

RESEARCH OF SURFACE PLASTIC DEFORMATION UNDER HYDRO-IMPULSE INFLUENCE

Increasing requirements for modern machines necessitates the use of new equipment and the improvement of existing equipment. Methods and techniques aimed at improving its operational and quality characteristics. One of the areas of improvement is the method of surface plastic deformation, which qualitatively affects the overall reliability of the product. However, surface plastic deformation does not allow for the development of a schematic diagram and a general-purpose device that can be used to strengthen a wide range of agricultural machinery parts. Differences in the physical and mechanical properties of the materials of manufactured parts, their weight, dimensions, longitudinal and transverse stiffness, condition or position, hardening process, type of production and other factors in each specific case force designers and technologists to find reasonable options for designing new devices for processing parts by surface plastic deformation for ensuring high technical and economic indicators. Therefore, the development of surface plastic deformation devices and the improvement of existing equipment are urgent scientific and engineering tasks. The introduction of modern methods and tools in the development of mechanical engineering ensures an increase in the reliability of parts and products in general, as well as a reduction in the cost of production. This article describes the compaction of metal powders as a technological operation, as a result of which powder blanks are formed. The equipment for vibropressing of powder blanks is considered and compared. Technical processes of basic vibration and vibration impact are presented. The methods and schemes of implementation of vibropressing of powder materials are demonstrated. The classification of vibro-compaction processes according to the characteristics of vibration and vibration modes is analyzed.

Use of Video Tools in the Educational Process and Consulting

This is already for a while that the frontal lectures, workshops and laboratory sessions in distant learning are conducted via the Internet in a real time mode. However, educational video films, video trainings and video tapes are relatively new forms of teaching, which have a potential of becoming indispensable tools, but they have not yet being properly established in the higher education system. As for the educational video film or the video tape, with the recording of the business game, they have huge value. First of all, these are the features that characterize an educational video generally: technical-informational, communication-social and aesthetic. A video film reflects documentary and research materials obtained through filming, photography and video recording. Certainly, this broadens teaching tools, since there is a visual demonstration of a real object, a system, which informs students about the problems in the system, the organization of the production proccess and the use of new equipment and technology, contributing not only to the transfer of knowledge, but also to the development of the habits of comprehending and evaluating the problem. Keywords: frontal video lecture, videoconference technology, video films, video training, video tapes.

About reflection deep fault as a result of geophysical (2D seismic and high precision gravimetric) study (on the example of the West Caspian deep fault)

Since the beginning of the last century, geological and geophysical studies have been carried out in large volumes on the territory of Azerbaijan in order to study the oil and gas content, study the sources of earthquakes and other geological issues and compile sections, maps, reports, etc. In recent years, work has been carried out to clarify and re-evaluate the studies carried out with the use of new equipment. From this point of view, the issue on the agenda was the extent to which the identified deep faults in the oil and gas regions of Azerbaijan are accurate. In this article, the results of new geophysical (2D seismic and high-precision gravimetric) data obtained in the area passing through the West Caspian deep fault were considered, and it was found that the fracture did not find its reflection. Keywords: deep fault; geosynclines; gravimetric exploration; seismic exploration; gravity; sediments; anomalies; gradient.

Research on Electrical Automation Monitoring System Model of Power Plant Based on CAN Bus

Using the traditional manual operation mode to control the electrical equipment of the power plant was not only inefficient and unsafe but also difficult to adapt to the use of new equipment. Therefore, this article puts forward the research on the model of power plant electrical automation monitoring system based on CAN bus, which was of great significance to improve the operation monitoring ability and management efficiency of power plant electrical equipment. Based on the analysis of the design mode and main functions of electrical equipment automation control system in power plant, this article expounded on the characteristics of CAN bus communication mode and its advantages in realizing electrical equipment automation control. According to the hierarchical management and structural characteristics of the electrical automation monitoring system, the real-time database architecture of the monitoring system was established, the real-time data monitoring and processing method of the electrical monitoring system was given, and then the electrical automation monitoring system model of the power plant was proposed. The experimental results showed that the electrical automation monitoring system proposed in this article was effective and feasible for real-time monitoring of the operation of electrical equipment. The model construction method of the electrical automation monitoring system proposed in this article can provide theoretical reference and technical support for improving the control mode of electrical equipment in power plants.

New method for suturing «difficult» duodenal stump

Ulcerative disease of the stomach and duodenum, remaining a common disease, is successfully treated with modern pharmaceuticals. However, a number of patients develop life-threatening complications that require surgical treatment. Operations include endovideosurgical technologies and traditional laparotomy with organ-preserving techniques and/or classical gastric resection in various versions. When several duodenal ulcer complications are combined, gastric resection in combina- tion or without vagotomy is not an alternative method. The key stage of the operation is the treatment of a «difficult» duodenal stump, and this remains the main problem of ulcer surgery. More than 340 methods of its suturing are known. Operated on 12 men aged 20 to 46 years. Everyone had duodenal ulcer with several complications at the same time. Against the background of peritonitis, 5 people were operated on. All patients underwent gastric resection: Bilrot-I in 2, Bilrot-II in 10. In 7 patients, gastric resection was combined with trunk vagotomy. When treating a «difficult» duodenal stump, the author’s method was used (Russian patent No. 2696656 of 05.08.2019). There were no complications and fatalities. The operation technology is described in detail. In the clinical comparison group of 15 people, with traditional stump processing technology, 2 after the operation had pancreatitis, 1 abscess in the stump due to its insolvency and one patient died from ongoing bleeding from an ulcer in the duodenal stump. Conclusion. The development of new methods for treating duodenal stump based on modern knowledge of pathomorphology processes and the use of new equipment remains relevant.

THE INTEGRATED APPROACH TO ENSURING THE REPAIRABILITY OF ENERGY-SATURATED EQUIPMENT

The high dynamics of the production of new agricultural machinery in recent years is the result of the phased implementation of the Strategy for the Development of Agricultural Machinery until 2030. Currently, it is necessary to work out an integrated approach to ensuring the effective use of manufactured equipment for its entire service life. (Research purpose) The research purpose is to study the existing experience of “Sel’khoztekhnika” to ensure the maintainability of energysaturated equipment and to identify opportunities for further improvement of the dealer service of equipment manufacturers belonging to the association "Ros-Spetsmash". (Materials and methods) The article presents an analysis of previously manufactured products for the maintenance and repair of agricultural machinery in the workshops of enterprises including " Sel’khoztekhnika ". At the present stage, for the further effective use of new equipment, it is necessary to conduct a survey of dealers about the availability and condition of existing service equipment, diag-nostic devices, stands for runningin and testing of components and assemblies. (Results and discussion) The article presents a version of the questionnaire to assess the equipment level of service enterprises, as well as proposals for the unification of control, diagnostic and service equipment. The lack of coordination in the maintenance and repair work gives certain negative risks in ensuring maintainability, especially of energysaturated equipment. (Conclusions) It is necessary to conduct a survey of the dealer service of agricultural machinery enterprises that are members of the Rosspetsmash Association for the availability and need of equipment for maintenance, including resource diagnostics and repairs. Based on the data obtained, determine the state of the engineering infrastructure and make recom-mendations to improve the efficiency of using new domestic energysaturated equipment through an integrated approach to ensuring high maintainability for the entire service life.

Simulating operation of power units 1 and 2 at Novovoronezh NPP II with two electrical feed pumps disabled and the backup pump not enabled

Introduction. The article analyzes the operation of Unit 1 and 2 of Novovoronezh Nuclear Power Plant II (equipped with VVER-1200 reactors) with two electrical feed pumps disabled and the backup pump not enabled. These operating conditions are subsequently simulated using the power unit model software-hardware package (PUM SHC) developed by LLC IF SNIIP ATOM. Research objectives. The objective of this work was to check the reliability of the forecasts of changes in the power unit parameters obtained using the PUM SHC, based on operational data. Methods. The simulated power unit parameter changes in transient conditions were in good agreement with the data collected in real tests. During the simulation, the power unit dynamic stability was preserved, i.e., the operational parameters were within the design limits and did not exceed the protection operation set points. Results. The results of the work suggest the possibility of using current NPP power unit simulations: for developing proposals for adjusting the operation control algorithms in case of malfunctions and emergency modes with the main equipment shutdown and power unit protection actuation; and for verifying design solutions for updating the power unit systems, which are associated with the use of new equipment or changes in flow diagrams. Conclusion. Current power unit models can be applied both for existing power units and for new ones that are being commissioned.

Preparation of future teachers for the modern technologies in physical education

Most experts recommend as an alternative to traditional approaches to physical education of preschoolers, to use the modern pedagogical technologies, among which preference is given to various fitness directions, in particular, step aerobics, fitball aerobics, aqua aerobics, the use of modern multimedia in the educational process, innovative methods, etc. The purpose of the study is to substantiate the main recommendations of implementation the modern pedagogical technologies in physical education of preschool children for future teachers. In the process of physical education with preschoolers, the teacher must solve educational and health tasks. For the health effects of fitball-aerobics on the body of preschool children, the teacher must to follow the basic principles of physical education, select the optimal characteristics of the equipment (size, color, elasticity of fitballs) taking into account the age of children, rationally dose the load. One of the promising health technologies for the development of motor skills of older preschoolers is step aerobics. Particular attention should be paid to the selection of musical accompaniment, use the game form of step aerobics, imitation exercises, select different forms for classes, etc., taking into account the age of children. In the process of tourism, it is important to interest children in the use of new equipment for them, a certain story (for example, treasure hunt), the use of interactive methods, game forms and more. To solve educational tasks, focus attention of preschoolers to the need for mutual assistance, discipline, courage, and so on. The outlined recommendations should be used in the process of preparing future teachers for the implementation the modern pedagogical technologies in physical education with preschool children.

Задача оптимизации технических параметров посевных агрегатов

The central problem of crop production remains the lag in the growth of the yield of cultivated crops from the growth of the costs of their production. (Research purpose) The research purpose is in developing a method for optimizing the technical and economic parameters of machine and tractor units for innovative technologies (in particular, sowing units). (Materials and methods) During the study authors used information methods, statistical methods of collecting information in the study of test reports of agricultural machinery and reporting the use of new equipment in various agrotechnologies. The article presents a review and analysis of foreign and domestic literature on the subject under consideration. (Results and discussion) The creation of agricultural machinery should be based on the developments of fundamental and applied agricultural sciences, the use of sowing machines is closely related to the development of technologies in which they are used. One of the most important indicators of technology development of crop production is the efficiency of operation of a sowing tractor unit and the level of potential productivity of cultivated plants. The correct choice of parameters and modes of sowing machines for the construction of the most productive plant placement schemes contributes to the efficiency of the operation of the sowing unit. One of the ways to optimize the processes of selecting parameters and modes can be implemented using the Harrington function. (Conclusions) The article shows that the task of optimizing the technical and economic parameters of the sowing units is designed to promote the creation of new machines that meet the technical, technological, agrotechnical, operational and technological, ergonomic requirements, reliability and safety requirements, and others. The solution to the problem of optimizing the technical and economic parameters of sowing aggregates is reduced to a compromise solution of two target functions for yield and cost.

MAIN TRENDS OF MARKETING INNOVATIONS DEVELOPMENT OF INTERNATIONAL TOUR OPERATING

The article examines the role of the tourism industry in the world economy, reveals the specifics of the innovation process in tourism. The classification of innovations in tourism according to the object of their application is given. The main directions of using innovative marketing technologies in the field of tourism services are considered: release of new types of tourism product, change in the organization of production and consumption, identification and use of new markets, as well as the use of new equipment and technology. Factors that accelerate the introduction of marketing innovations are studied. Based on the analysis of world experience, several models of regulation of innovative tour operating activities in the EU have been identified. The first direction of formation of the model of the innovations development in tourism is the activity of stimulating innovations in the public and private sectors of tourism with the aim of their transition to a qualitatively new model of touring (similar model is used in Greece, Italy and Portugal). The second direction is defined as the internationalization and opening of new markets (a similar model of stimulating innovative development is typical of Spain, Romania and partly Norway). The third one includes support for entrepreneurship in the field of tourism, stimulation of entrepreneurial initiatives, opening a new tourism business (A similar model of stimulating innovation in tourism is typical of many countries in Europe, Australia, New Zealand). The fourth direction is the promotion of the country, its tourism product, including educational and cultural ones (A similar model is typical of Bulgaria, Croatia, Spain, Turkey, Thailand). The role of introduction and active development of e-business and marketing technologies is defined, especially in modern conditions. The necessity of development of the newest directions of the Internet marketing in the field of tourism, including mobile, Internet branding and geomarketing, is proved. The role of innovative marketing technologies as one of the central elements of modern development of activity of tourist firms, the necessity of application of computer technologies and non-standard ways of giving of the information during carrying out modern technical maintenance, are justified. The first group of such technological solutions consists of management technologies, including property management system (PMS), aimed at optimization of basic technological operations. The modern hotels and chains are trying to present themselves not only in global distribution system (GDS), which has become a powerful advertising tool, but also in alternative distribution system (ADS), which is primarily needed by hotels focused on the business segment. Global distribution system (GDS) is also closely integrated into well-known booking systems such as Booking.com, HRS, Agoda, Travelocity, Expedia etc. The next group is for food and beverages inventory management technology (F&B). The group of marketing technologies includes search engine optimization measures (SEO and PPC), which allow to raise the hotel site in search engine rankings, E-mail Marketing as a means of maintaining constant communication with the client, marketing activities in social media (Social Media Optimization), creation of virtual hotels or illusions of visiting a hotel (Second Life and Virtual Hotels Conclusion), branding, etc. The last group of technologies are service ones, i.e. technologies for improving hotel products and services. Innovative technologies are developing in the direction of ensuring sustainable development (greening of hotel services and activities), inclusion in traditional technological operations of innovative components: electronic concierge terminals, access to hotel services via mobile devices, maximizing Internet access, etc. Based on the analysis of the activities of large tour operators, regional differences have been identified in Turkey, Greece, Croatia, Spain, Austria, Norway and France. It is proved that marketing innovations in tourism have a qualitative novelty, which affects the promising areas of tourism development, improvement of existing tourism products, improving the image and competitiveness of the tourism industry. Based on the study, it is generalized that the role of marketing innovations in international tourism has been growing every year, and it has become especially relevant in the conditions of the COVID-19 crisis. For travel companies, the effect of marketing innovation can be expressed in the qualitatively new changes in the tourism industry, improving the efficiency of tourism infrastructure, management of sustainable operation and development of tourism in the country and the formation, positioning and consumption of tourism services, improving the image and competitiveness of travel companies.

The concept of an automated educational system for the training of refueling complexes personnel

At present the aviation fuel supply industry is characterized by complex technological processes, in which possible incidents and accidents can lead to economic and environmental losses. These processes require highly qualified and specially trained engineering and technical personnel. The rapid development of digital technologies and their implementation in the technological processes for ensuring flights of aircraft aviation fuel, such as continuous monitoring of fuel cleanliness, the quantity and consumption records of aircraft aviation fuel using automated systems, as well as the use of new equipment, such as mass meters, which are highly accurate. All this requires a new approach to the training of the refueling complexes personnel. In addition, the development of refueling complexes is on the way to optimize the operations. So, for example, the responsibilities of the aircraft refueling operator are also assigned to the driver of the refueling tanker. Currently, the technical facilities of the warehouse and refueling complex equipment used for aircraft refueling are included as part of the airport infrastructure in order to ensure the flights regularity. Application of the new equipment using digital technologies is associated with improving the quality of refueling operations at all stages of aviation fuel supply. To ensure effective management of aviation fuel supply processes at all stages, the organizational structure should be based not only on modern equipment of all parts of the technological chain of fuel preparation, but also on a closed automated control system based on the introduction of modern, intelligent control and measuring devices. In these conditions, the issue of training personnel of fueling complexes becomes relevant. The solution to this issue is in the development of automated training systems, that allow to accelerate staff training and reduce the cost of training. Therefore, the article discusses the structural and functional model of an automated training system (ATS) that combines disparate solutions and forms a new system for solving problems of training, certification and information support for personnel of aviation fuel supply organizations (AFSO). The proposed training system allows training not only for one workplace, but taking into account individual characteristics, for example, to prepare both the driver of the vehicle and the refueling operator in one person. The article describes the scenarios of the use of ATS subsystems developed in the work, which determine the basic functional composition. In conclusion, based on the developed scenarios for the use of subsystems, the developed structural and functional model of the ATS is presented, which provides solutions to the problems of maintaining the operation of the AFSO and supporting decision-making.

Совершенствование системы дезинфектологической профилактики инфекционных болезней с применением нового оборудования для аэрозольной дезинфекции

Совершенствование системы дезинфектологической профилактики инфекционных болезней с применением нового оборудования для аэрозольной дезинфекции

CONCEPTUAL OPTIMIZATION OF FLEXIBLE MACHINE BUILDING PRODUCTION

Based on the use of simulation modeling, approaches to the definition of the essence of conceptual optimization as an essential element of preplanned research, which is currently underdeveloped, are shown. To resolve the contradictions of the integral process of building and researching a complex automated production, the following contradictions and areas of the latest developments in flexible production have been identified in the work: coordination of the growing content in technology, design and production management; integration of modular local systems of new quality; stabilization and reduction of the cost of fixed assets; stabilization and increase the level of automation of production.The paper substantiates the need for orientation of the latest developments on the optimization of flexible industrial production in the following areas: modeling of design tasks in the process of pre-planned studies with justification of the way of forming system functions and mechanisms of their organization; the formation of ways of organizing and discrete formalization of the functional cycles of the passage of objects through the production system; regulation of the technological interval, which dictates the principle of functioning of a flexible system and a new way of organizing production; design of the system version of flexible production with ranges of internal organization parameters.The approach proposed in the work contributes to: increasing the cycle and technological productivity, which will be ahead of the investment spent; high flexibility of transition to new, constantly changing products; high-quality product upgrades with low energy supply and high resource utilization; improving the comfort of working conditions, environmental safety in relation to existing technologies. But at the same time, high-performance flexible systems can provide their inherent qualities subject to appropriate changes in the environment and the conditions for the use of new equipment, that is, a modular organization of production.Testing of the research results took place on a really operating flexible manufacturing system for machining hull parts at a machine tool enterprise.

A new IoT‐based smart energy meter for smart grids

The significant increase in energy consumption by the growth of the population or by the use of new equipment has brought big challenges to the energy security as well as the environment. There is a need that consumers can track their daily use and understand consumption standards for better organizing themselves to obtain financial and energetic efficiency. With the improvement of smart networks technology for better energy supply, a smart meter is not just a simple measurement gadget anymore, but it has additional functions including smart equipment control, bidirectional communication that allows integration of users and networks, and other functionalities. Smart meters are the most fundamental components in smart power grids. Besides, the meters used with a management system can be utilized for monitoring and controlling home appliances and other gadgets according to the users' need. A solution of an integrated and single system should be more efficient and economical. Smart measurement systems allow monitoring the energy consumption of the final consumers while providing useful information about the energy quality. The information provided by these systems is used by the operators to enhance the energy supply, and different techniques can be also applied for this end, such as charge scheduling, management from the demand side, and non-intrusive load monitoring. The Internet of Things (IoT) is becoming a great ally in the management of smart distribution and energy consumption in smart systems scenarios. To address these issues, this paper proposes and demonstrates a new smart energy meter following an IoT approach and its associated costs and benefits. The developed device incorporates several communication interfaces. In order to easily integrate with any monitoring software solution, the meter has a multi-protocol connection. Finally, the provided solution is validated and demonstrated in real-life environments and it is also under use.

Using innovative marketing technologies in the tourism industry.

The article explores the role of the tourism industry in the global economy, reveals the specifics of the innovation process in the field of tourism. The concept of “innovation in tourism” is defined as systemic events that have a qualitative novelty, which leads to positive changes and ensures the stable functioning of the tourism industry. The classification of innovations in tourism by the object of their use is given. The main directions of using marketing innovative technologies in the field of tourism services are considered: the release of new types of tourism products, changes in the organization of production and consumption, the identification and use of new markets for products, and the use of new equipment and technologies. The factors that accelerate the implementation of marketing innovations are investigated. The role of electronic business in the implementation of marketing technologies is shown. The necessity of developing the latest directions of Internet marketing in the tourism industry, including mobile, viral, block marketing, branding and geomarketing, has been proved. The role of innovative advertising companies as one of the central elements of the marketing activities of travel agencies is shown. The necessity of using modern technical support, computer technology and non-standard methods of presenting information during their implementation has been proved. It was determined that marketing innovations in tourism have a qualitative novelty that affects promising areas of tourism development, improvement of existing tourism products, increasing the image and competitiveness of tourism industry enterprises.

Continuing education as a global trend and modern Ukrainian reality

The article reveals the role of modern education as one of the most important socio-economic development components, and a means for solving a set of global problems, in particular ensuring further mankind’s existence. In this context, the authors emphasize that under the conditions of world systems’ globalization and internationalization, continuing or lifelong education is currently becoming one of the most actively discussed topics in society. The paper aims at the determination of the role of education in social development, as well as to find a correlation between continuing education effectiveness and personal development. It is proved that as a leading factor of sustainable social development, life-long education is a universal civilization resource raising the possibility of each individual’s potential development creating a synergistic effect of a positive influence on social changes. It contributes to raising the level of social understanding, interaction and cooperation, as well as a social tension reduction. Besides, continuing education facilitates innovation development, positively affects labour efficiency increasing its productivity, and encourages the use of new equipment together with innovative technology development. The results of the international expert surveys on the positive impact of various forms of adult education and training on labour productivity and the employment of different population segments are presented. The participation of Ukraine’s population in formal and non-formal education, as well as other indicators illustrating the level of life-long education development in our country are also covered. The conclusion is made on the necessity of introducing some measures in Ukraine aimed at the effective functioning of the continuing education system.

Assessment of geo-cryological conditions in the design and operation of pipelines in the Arctic zone of the Russian Federation

The paper presents the methodology of calculations and technical justification for the use of new equipment. The section of the operating oil pipeline in the part of monitoring of heat engineering processes is considered. The main results of thermo-technical calculations of the pipeline section were described and the aureoles of thawing of the permafrost soil were simulated. As an example for replacement, a multilayer pipe with foamed polyurethane insulation and concrete casing was considered because of its better characteristics compared to the design one.

Reduction of radiation exposure associated with renewal of the radiologic systems in coronary interventions

PurposeInterventional coronary procedures are an important source of radiation. This study sought to evaluate the effect of the renewal of the radiologic system on patient exposure during diagnostic coronary angiography (DCA) and percutaneous coronary interventions (PCIs). MethodsDCA and PCIs were obtained from three centres, which renewed their radiologic systems during their participation in the multicentre prospective observational RAY’ACT-2 study. Data were analysed from the months before and after the radiologic system was changed. The primary outcomes were the dose reduction estimated by the kerma.area product (KAP in Gy·cm2) and the ratio of the KAP to fluoroscopy time (Gy·cm2·min−1). ResultsA total of 2148 patients underwent DCA (1575 before and 573 after the system change), and 1563 underwent PCI (1196 before and 367 after). A change in the radiologic system was associated with a KAP reduction of 43% for DCA (median [interquartile range]: 18.1Gy·cm2 [10.2–34.0] versus 31.5 [19.0–49.0], P<0.0001), and 38% for PCI (42.2Gy·cm2 [23.8–81.7] versus 70.1 [42.0–109.0], P<0.0001). Fluoroscopy time did not vary significantly, and the ratio KAP to fluoroscopy time significantly decreased by 54%. The dose reduction was homogeneous between the three centres and between different manufacturer's systems. ConclusionsIn this multicentre study, the renewal of the radiologic system was associated with a highly significant 40%–50% reduction in radiation dose, irrespective of the manufacturer. A close interaction between manufacturers and operators is needed to optimise the use of new equipment and the effectiveness of radiation reduction tools and techniques.