scholarly journals Using the unit software model to improve design solutions and optimize process management

2021 ◽  
Vol 7 (1) ◽  
pp. 33-39
Author(s):  
Dmitry B. Statsura ◽  
Maksim Yu. Tuchkov ◽  
Pyotr V. Povarov ◽  
Aleksandr I. Tikhonov ◽  
Sergey P. Padun ◽  
...  
Keyword(s):  
Power Unit ◽  
Power Plants ◽  
Support Systems ◽  
Information Support ◽  
Automatic Process ◽  
Standard Process ◽  
Improve Design ◽  
Software Model ◽  
Process Documentation ◽  
Design Solutions

Advanced design power units are distinguished by a high degree of digital transformation. Therefore, of particular interest are operator information (intelligent) support systems, which can reduce the workload on operating personnel as well as predict possible deviations long before they evolve into severe emergencies. The article analyzes the current standard process documentation that requires solutions to support the operator and determines the list of system functions that should be provided to improve the safety level of nuclear power plants. A brief overview of the world experience in implementing such solutions is also provided. As an example of the further development of operator support systems, the authors consider the operator information support system (OISS), which is being developed at the NvNPP pilot unit with the VVER-1200 reactor. The OISS functions will make it possible to fulfill the requirements of standard process documentation that are currently not implemented in the power unit design. The key features of the OISS under development are step-by-step interactive procedures and the unit software model. The authors provide a brief description of the power unit software model and consider several examples of its practical application as part of the OISS to improve design solutions and optimize automatic process control. In the years ahead, it is proposed to implement the OISS at power units under construction in order to reduce the information overload of operators and create conditions for a step-by-step increase in the automation level of the power unit control.

Integrated Pipe Stress Analysis/Support Pattern Selection/Support Design CAE System

1992 ◽  
Author(s):  
M. Chatterjee ◽  
A. Unemori ◽  
A. Kakaria ◽  
D. Jain
Keyword(s):  
Stress Analysis ◽  
Nuclear Power ◽  
Power Plants ◽  
Automatic Process ◽  
Pattern Selection ◽  
Flow Process ◽  
Support Design ◽  
Pipe System ◽  
Analysis And Design ◽  
Cae System

Abstract This paper describes the organization and features of the AUTO-PIPE CAE System. AUTO-PIPE is a fully integrated software package which allows the User to perform the entire sequence of piping analysis and design in a streamlined work flow process. Major tasks in this automatic process includes: (1) Pipe Stress Analysis (2) Pipe Support Location Optimization (3) Stress Isometric Drawing Generation (4) Pipe Support Pattern Selection and Member Design (5) 3D Interference Detection for Support At the core of the System is the AUTO-PIPE (Relational) Database which contains all static (project-specific) and dynamic (model-specific) data required for all of the major tasks listed above. The AUTO-PIPE CAE System has been used, and is currently being used, for pipe system design for Nuclear Power Plants in Japan to achieve substantial manpower reduction and cost savings.

Intelligent decision support systems for nuclear power plants in Japan

1988 ◽  
Vol 22 (1-4) ◽  
pp. 387-399 ◽  
Author(s):  
Takamichi Ogino ◽  
Yasuo Nishizawa ◽  
Toshihiko Morioka ◽  
Norio Naito ◽  
Mamoru Tani ◽  
...  
Keyword(s):  
Decision Support ◽  
Decision Support Systems ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Support Systems ◽  
Intelligent Decision ◽  
Intelligent Decision Support Systems ◽  
Intelligent Decision Support

scholarly journals 14C Measurements at PWR-Type Nuclear Power Plants in Three Middle European Countries

Radiocarbon ◽  
1997 ◽  
Vol 40 (1) ◽  
pp. 439-446 ◽  
Author(s):  
György Uchrin ◽  
Ede Hertelendi ◽  
Gábor Volent ◽  
Ondrej Slavik ◽  
Jozef Morávek ◽  
...  
Keyword(s):  
Power Unit ◽  
Nuclear Power ◽  
Power Plants ◽  
Discharge Rate ◽  
Continuous Increase ◽  
Mean Values ◽  
A Value ◽  
Discharge Rates ◽  
C 50 ◽  
Ring Analysis

Regular 14C sampling of discharged air began in 1988 at Paks Nuclear Power Plant (NPP), Hungary, and in 1991 at NPPs in Krsko, Slovenia and Bohunice, Slovakia. Monitoring of 14C discharges is carried out at all NPPs with similar differential samplers continuously collecting 14C in the form of 14CO2 and 14CnHm. The main results of airborne discharge monitoring are as follows: 14C activity concentration varied roughly within a factor of two around their mean values, 125 Bq m-3 and 90 Bq m-3 for Paks and for Krsko NPP, respectively. The pattern of discharge for Bohunice NPP is slightly different from that at the other two stations. At Bohunice, there has been a continuous increase in the discharge rate at power unit V1, starting with 70 Bq m-3 in 1991 and reaching a value of 190 Bq m-3 in 1995. The values for power unit V2 are 50 Bq m-3 and 82 Bq m-3. The average normalized yearly discharge rates are 0.887 (TBqGWe-1yr-1) for Paks, 0.815 (V1) and 0.500 (V2) for Bohunice, and 0.219 for Krsko. Most of the discharged 14C is in hydrocarbon form, 95% for Paks and Bohunice V2, but the CO2 fraction may reach 25% or 43% at Bohunice V1 and Krsko, respectively. At Bohunice V1, not only the discharge rate increased but the 14CO2 ratio to the total changed from 30% to 13%. The local radiological impact is estimated to be 1.5 μSv a-1 for Paks, 1.7 μSv a-1 for Bohunice, and 0.12 μSv a-1 for Krsko. The 14C excess in the environment has been measured at Paks NPP since 1989. Based on the monitoring data, the long-term average 14C excess from the Paks NPP was D14C=50% for hydrocarbons. Tree-ring analysis has shown a slight excess around Krsko NPP: D14C is equal to 199.9% for a tree at 1 km from the NPP compared with a “reference” one for which D14C was equal to 111.6% (in 1994).

scholarly journals DEVELOPMENT THE TECHNOLOGY OF REENGINEERING SPECIALIZED INFORMATION SYSTEMS

2021 ◽  
Author(s):  
Alina Mikhnova ◽  
Dmutro Mikhnov ◽  
Kateryna Chyrkova
Keyword(s):  
Information System ◽  
Information Systems ◽  
Business Processes ◽  
Information Support ◽  
Rational Version ◽  
Design Solutions

The technology of reengineering of specialized information systems is offered, which allows determining the option of reengineering of automated working places, which will maximize the effect of specialized information system, namely, completeness and reliability of information support of business processes, in a limited budget.The article analyzes the existing approaches to reengineering of information systems, methods and models used to form a rational version of design solutions, identifies the features of reengineering of specialized information systems, formed the technology of reengineering of specialized information systems. The proposed technology of reengineering of specialized information systems can be used to improve the performance of the organization, which depends on the completeness and reliability of information support of business processes.

scholarly journals RESEARCHES OF ECONOMIC INDICATORS OF WORK MODERNIZED RAH-98

2017 ◽  
pp. 27-34
Author(s):  
Yo.S. Mysak ◽  
M.F. Zayats ◽  
T.I. Rуmar
Keyword(s):  
Natural Gas ◽  
Power Unit ◽  
Power Plants ◽  
Combustion Products ◽  
Fuel Oil ◽  
Stable Mode ◽  
Load Variation ◽  
Mode Of Operation ◽  
Two Stages ◽  
Efficiency And Reliability

An analysis of the existing methods and schemes of heating the air by combustion products in the tailings of the heating boiler indicates that such measures provide an opportunity to increase the efficiency and reliability of power plants, as well as increase the efficiency of boiler plants. This paper considers the results of the study of the economic performance of the modernized RAH-98 boiler TGMP-314 A 300 MW on natural gas in the range of load variation of the power unit 160–260 MW and on the fuel oil in the range of load variation of the power unit 200–260 MW. Experiments were carried out at a stable mode of operation of the boiler in two stages: for the off and for the included scheme of suction environment from the seals of RAH. The average increase in the efficiency of the boiler is 0.35 % gross during operation of the boiler, both on natural gas and on fuel oil in the specified range of loads. Absorption of air in RAH for loads of the power unit 160–260 MW for the included circuitry is reduced by 7 % on average compared to the disconnected circuit. Bibl. 10, Fig. 5.

scholarly journals CIRCUIT-DESIGN SOLUTIONS AND INFORMATION SUPPORT OF CITY ELECTRIC NETWORKS IN THE CONDITIONS OF THE SMART GRID

2017 ◽  
Vol 60 (5) ◽  
pp. 393-406 ◽  
Author(s):  
M. I. Fursanov
Keyword(s):  
Smart Grid ◽  
Circuit Design ◽  
Energy System ◽  
Distribution Networks ◽  
Developed Countries ◽  
Information Support ◽  
Control Mode ◽  
Electrical Networks ◽  
Electric Networks ◽  
Design Solutions

The structure, circuit-design solutions and information support of the city electric networks in the conditions of the SMART GRID have been analyzed. It is demonstrated that the new conditions of functioning of electric power engineering, increasing demands for its technological state and reliability in most countries determined the transition to a restructuring of electrical networks to be based on the SMART GRID (intelligent power networks) innovative new structure. The definitions of the SMART GRID, its various attributes and characteristics in most developed countries including Belarus are presented. It is revealed that the existing and future circuit and constructive solutions that can automate the process of managing modes of urban electric networks under the SMART GRID conditions are manifold. At present, the most common in distribution networks are the sources of distributed generation (combustion turbines, wind turbines, photovoltaic installations, mini-hydro, etc.). The patterns and problems of information traceability of a traditional urban networks of the unified energy system of Belarus have been analyzed, and it is demonstrated that in the conditions of the SMART GRID most of the problems of the control mode that are characteristic for traditional distribution networks 6–10 kV and 0.38 kV, lose their relevance. Therefore, the present article presents and features the main directions of development of automatic control modes of the SMART GRID.

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