scholarly journals Article Review: The Policy Implementation of Waste to Energy Power Plant – Pilot Project in Surabaya, Indonesia

2020 ◽  
Vol 190 ◽  
pp. 00009
Author(s):  
Fierda Nurany ◽  
Ismail Ismail ◽  
Mohamad Ferdaus Noor Aulady ◽  
Nur Laila Hamidah ◽  
Rugi Vicente Del Castillo Rubi
Keyword(s):  
Power Plant ◽  
Policy Implementation ◽  
Communication System ◽  
Power Plants ◽  
Pilot Project ◽  
Qualitative Approach ◽  
Waste To Energy ◽  
Pilot Projects ◽  
Management Procedure ◽  
Good Policy

Indonesia government has nominated Surabaya city as one of the Indonesia pilot projects of waste to energy power plants (WEPP). The WEPP in Surabaya will start to operate in November 2019. However, to ensure this facility operates according to the regulation, the WEPP should be supported by good policy from the stakeholder. This research aims to review the policy implementation of WEPP in Surabaya pilot project based on Van Meter and Van Horn theory. The theory has several indicators that indicate good policy implementation. This research used a descriptive qualitative approach by interviewing fifteen respondents who involved in WEPP pilot project. The results suggest that the policy implementation of WEPP needs further regulation from local government about the management procedure of waste material, which converts to the tipping fee. The solution suggested from this issue is the contract refinement and the fundamental improvement of the communication system to the better WEPP.

PROFESIONALISASI GURU BAHASA INGGRIS SEKOLAH YAYASAN PENDIDIKAN JAYAWIJAYA MENUJU SEKOLAH BERTARAF INTERNASIONAL: Sebuah Analisis Reflektif dalam Perspektif Psikologi

2015 ◽  
Vol 7 (1) ◽  
pp. 13-28
Author(s):  
Supriyono Supriyono
Keyword(s):  
Quality Management ◽  
School Quality ◽  
English Proficiency ◽  
Pilot Project ◽  
English Teachers ◽  
Qualitative Approach ◽  
Pilot Projects

This study aims at describing pilot projects to increase teachers’ professionalism in English proficiency.  Pilot project was conducted by Yayasan Pendidikan Jayawijaya, Papua regarding efforts to increase school quality management from national into international qualification.  Reflective analysis using qualitative approach was used for analysis.  This study revealed that strategies to conduct the policy asserted psychological perspectives focusing and maintaining motivation, expectation and andragogy implementation.  Teachers’ problems were approached through constructive relation. The pilot project that initially was administered for English teachers, has been implemented successfully for all teachers at the Yayasan.

Markov and Monte Carlo simulation of Waste-to-Energy power plants considering variable fuel analysis and failure rates

2021 ◽  
pp. 1-21
Author(s):  
Ali Behbahaninia ◽  
Mohsen Banifateme ◽  
Mohammad Hasan Azmayesh ◽  
Shayan Naderi ◽  
Gloria Pignatta
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Power Plant ◽  
Probability Distribution ◽  
Power Plants ◽  
Waste To Energy ◽  
Physical Analysis ◽  
Failure Rates ◽  
Design Performance ◽  
Stochastic Nature

Abstract In the present work, a method has been developed to estimate the annual capacity factor of waste to energy power plants. The case study is an under-construction power plant located in an area of high precipitation rate. Existing data of the waste analysis in the region shows that its content, including the mass fractions of the paper, food, and plastic, change daily and seasonally. The variation of the waste analysis in addition to components' failure and the off-design performance of the steam cycle make the behavior of the system highly stochastic. To deal with this stochastic nature, the probability distribution function of waste analysis is constructed to consider a range of possible inputs. Moreover, time-varying failure rates are used in Markov analysis to calculate the system's availability by considering infant failures, random failures, and aging. Also, the off-design performance of the power plant is simulated by THERMOFLEX to capture nonlinearities caused by steam flow reduction in the steam turbine. The probability distribution functions of the MSW physical analysis are estimated by sampling from a pit near the location. The Monte Carlo simulation has been used to couple the stochastic nature of the MSW content to the simulation and operation of the power plant, modeled by THERMOFLEX. The results show 2300 Kilowatt for power generation in full load condition in the first year, highlighting 30% power derate due to Municipal Solid Waste quality reduction.

scholarly journals Low rank coal drying technology for decreasing electricity cost production: case study of Nagan Raya power plant

2020 ◽  
Vol 181 ◽  
pp. 03003
Author(s):  
Agus Setiawan ◽  
Zainal Arifin
Keyword(s):  
Power Plant ◽  
Technology Implementation ◽  
Power Plants ◽  
Electricity Consumption ◽  
Pilot Project ◽  
Low Rank ◽  
Low Rank Coal ◽  
Electricity Cost ◽  
Coal Drying ◽  
Drying Technology

Considering the depletion of black coal resources, utilization of low rank coal currently is emerging to meet the growing of electricity consumption globally. Some coal fired power plants urge to use the domestic low rank coal due to some financial reasons. They are several coal drying technologies have been proposed. This study analyzes the utilization low rank coal to decrease the electricity cost production at Nagan Raya coal fired power plant. The Coal Moisture Control Fluidized Bed (CMC-FB) technology is selected as a basis for both technical and financial calculation. Based on the pilot project in Fukuoka, this technology is technically feasible and well suited for Nagan Raya power plant. A financial modelling shows that coal drying technology implementation can potentially decrease the electricity cost production for the utility and also make benefits for the investor. Further research is recommended to investigate other proven technologies. Additionally the effect of coal drying implementation to the environment should be noticed.

Classification Analysis of Communication System of Nuclear Power Plant

2020 ◽  
Author(s):  
Yu Yun ◽  
Zheng Shen ◽  
Liu Jing
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Communication System ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Plant Communication ◽  
Telephone System ◽  
Advanced Generation

Abstract The communication system of nuclear power plants in China is not a safety class system, but it plays an important role in the safe operation of nuclear power plants. Under emergency state, the communication system is a prerequisite for accident management. In order to ensure communication on-site and off-site, diverse communication sub-systems are designed throughout the nuclear power plant, including various communication means for voice, data and images. For an advanced generation II pressurized water reactor (PWR) nuclear power plant (NPP) in China, there are various subsystems, including normal telephone system, safety telephone system, grid telephone system and so on. Although NPPs have designed diverse communication sub-systems, there is not any clear classification of the sub-systems, which is not enough for the reliability of communication sub-systems under accident conditions. Therefore, it can hardly ensure effective communications between different emergency response organizations and this will influence the mitigation of the accident. In order to identify the importance of different communication sub-systems, to optimize the design of communication system, and to improve the reliability and efficiency of nuclear power plant communication system, it’s necessary to analyze the function and operation of each sub-system, as well as to develop the classification method of nuclear power plant communication system. Considering the availability and reliability of onsite and offsite communication under emergency conditions, slightly considering economic issue, this paper determines 7 assessment factors and develops a set of scoring methods for communication system classification. On this basis, this paper completes the classification of the communication system for an advanced generation II PWR NPP, which provides a reference for communication system classification and provides the technical basis for design modification of the communication system.

scholarly journals Long-term operation of a boiling pressure vessel and its internals

2019 ◽  
Vol 52 (4) ◽  
pp. 200-221
Author(s):  
Otso Cronvall
Keyword(s):  
Power Plant ◽  
Pressure Vessel ◽  
Nuclear Power ◽  
Power Plants ◽  
Pilot Project ◽  
Computational Time ◽  
Degradation Mechanisms ◽  
Term Operation ◽  
Reactor Pressure

This study concerns the long-term operation (LTO) of a boiling water reactor (BWR) reactor pressure vessel (RPV) and its internals. The main parts of this study are: survey on the susceptibility to degradation mechanisms, and computational time limited ageing analyses (TLAAs). The ageing of nuclear power plants (NPPs) emphasizes the need to anticipate the possible degradation mechanisms. The BWR survey on the susceptibility to these mechanisms uses the RPVs and significant internals of the Olkiluoto power plant units OL1 and OL2 as a pilot project. For the components that screened in, the potential to brittle, ductile or other degradation is determined. This was carried out by applying structural mechanics and fracture mechanics procedures. Only some most significant cases and results are presented here.

Fuzzy multi-objective decision making approach for nuclear power plant installation

2020 ◽  
Vol 39 (5) ◽  
pp. 6339-6350
Author(s):  
Esra Çakır ◽  
Ziya Ulukan
Keyword(s):  
Linear Programming ◽  
Power Plant ◽  
Nuclear Power Plant ◽  
Energy Supply ◽  
Energy Demand ◽  
Nuclear Power ◽  
Power Plants ◽  
Total Duration ◽  
Objective Functions ◽  
Multi Objective

Due to the increase in energy demand, many countries suffer from energy poverty because of insufficient and expensive energy supply. Plans to use alternative power like nuclear power for electricity generation are being revived among developing countries. Decisions for installation of power plants need to be based on careful assessment of future energy supply and demand, economic and financial implications and requirements for technology transfer. Since the problem involves many vague parameters, a fuzzy model should be an appropriate approach for dealing with this problem. This study develops a Fuzzy Multi-Objective Linear Programming (FMOLP) model for solving the nuclear power plant installation problem in fuzzy environment. FMOLP approach is recommended for cases where the objective functions are imprecise and can only be stated within a certain threshold level. The proposed model attempts to minimize total duration time, total cost and maximize the total crash time of the installation project. By using FMOLP, the weighted additive technique can also be applied in order to transform the model into Fuzzy Multiple Weighted-Objective Linear Programming (FMWOLP) to control the objective values such that all decision makers target on each criterion can be met. The optimum solution with the achievement level for both of the models (FMOLP and FMWOLP) are compared with each other. FMWOLP results in better performance as the overall degree of satisfaction depends on the weight given to the objective functions. A numerical example demonstrates the feasibility of applying the proposed models to nuclear power plant installation problem.

Human reliability in non-destructive inspections of nuclear power plant components: modeling and analysis

2019 ◽  
Vol 7 (2B) ◽  
Author(s):  
Vanderley Vasconcelos ◽  
Wellington Antonio Soares ◽  
Raissa Oliveira Marques ◽  
Silvério Ferreira Silva Jr ◽  
Amanda Laureano Raso
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Human Factors ◽  
Nuclear Power ◽  
Power Plants ◽  
Failure Modes ◽  
Cooling System ◽  
Human Reliability ◽  
Non Destructive ◽  
Plant Components

Non-destructive inspection (NDI) is one of the key elements in ensuring quality of engineering systems and their safe use. This inspection is a very complex task, during which the inspectors have to rely on their sensory, perceptual, cognitive, and motor skills. It requires high vigilance once it is often carried out on large components, over a long period of time, and in hostile environments and restriction of workplace. A successful NDI requires careful planning, choice of appropriate NDI methods and inspection procedures, as well as qualified and trained inspection personnel. A failure of NDI to detect critical defects in safety-related components of nuclear power plants, for instance, may lead to catastrophic consequences for workers, public and environment. Therefore, ensuring that NDI is reliable and capable of detecting all critical defects is of utmost importance. Despite increased use of automation in NDI, human inspectors, and thus human factors, still play an important role in NDI reliability. Human reliability is the probability of humans conducting specific tasks with satisfactory performance. Many techniques are suitable for modeling and analyzing human reliability in NDI of nuclear power plant components, such as FMEA (Failure Modes and Effects Analysis) and THERP (Technique for Human Error Rate Prediction). An example by using qualitative and quantitative assessesments with these two techniques to improve typical NDI of pipe segments of a core cooling system of a nuclear power plant, through acting on human factors issues, is presented.

Nonlinear Trend Analysis of Mill Fan System Vibrations for Predictive Maintenance and Diagnostics

2012 ◽  
Vol 58 (4) ◽  
pp. 351-356
Author(s):  
Mincho B. Hadjiski ◽  
Lyubka A. Doukovska ◽  
Stefan L. Kojnov
Keyword(s):  
Power Plant ◽  
Trend Analysis ◽  
Thermal Power Plant ◽  
Power Plants ◽  
Thermal Power ◽  
Balkan Peninsula ◽  
Predictive Maintenance ◽  
Nonlinear Trend ◽  
The Subject ◽  
The Given

Abstract Present paper considers nonlinear trend analysis for diagnostics and predictive maintenance. The subject is a device from Maritsa East 2 thermal power plant a mill fan. The choice of the given power plant is not occasional. This is the largest thermal power plant on the Balkan Peninsula. Mill fans are main part of the fuel preparation in the coal fired power plants. The possibility to predict eventual damages or wear out without switching off the device is significant for providing faultless and reliable work avoiding the losses caused by planned maintenance. This paper addresses the needs of the Maritsa East 2 Complex aiming to improve the ecological parameters of the electro energy production process.

Features of antibodies against benzo[a]pyrene formation in workers of coal mines and thermal power plants

2019 ◽  
pp. 9-14
Author(s):  
Ye. G. Polenok ◽  
S. A. Mun ◽  
L. A. Gordeeva ◽  
A. A. Glushkov ◽  
M. V. Kostyanko ◽  
...  
Keyword(s):  
Power Plant ◽  
Thermal Power Plant ◽  
Power Plants ◽  
Reference Group ◽  
Coal Dust ◽  
Thermal Power ◽  
Coal Mines ◽  
Serum Levels ◽  
Thermal Power Plants ◽  
Immune Reactions

Introduction.Coal dust and coal fi ring products contain large amounts of carcinogenic chemicals (specifically benz[a]pyrene) that are different in influence on workers of coal mines and thermal power plants. Specific immune reactions to benz[a]pyrene therefore in these categories of workers can have specific features.Objective.To reveal features of antibodies specifi c to benz[a]pyrene formation in workers of coal mines and thermal power plants.Materials and methods.The study covered A and G class antibodies against benz[a]pyrene (IgA-Bp and IgG-Bp) in serum of 705 males: 213 donors of Kemerovo blood transfusion center (group 1, reference); 293 miners(group 2) and 199 thermal power plant workers (group 3). Benz[a]pyrene conjugate with bovine serum albumin as an adsorbed antigen was subjected to immune-enzyme assay.Results.IgA-Bp levels in the miners (Me = 2.7) did not differ from those in the reference group (Me = 2.9), but in the thermal power plant workers (Me = 3.7) were reliably higher than those in healthy men and in the miners (p<0.0001). Levels of IgG-Bp in the miners (Me = 5.0) appeared to be lower than those in the reference group (Me = 6.4; (p = 0.05). IgG-Bb level in the thermal power plantworkers (Me = 7.4) exceeded the parameters in the healthy donors and the miners (p<0.0001). Non-industrial factors (age and smoking) appeared tohave no influence on specific immune reactions against benz[a]pyrene in the miners and the thermal power plant workers.Conclusions.Specific immune reactions against benz[a]pyrene in the miners and the thermal power plant workers are characterized by peculiarities: the miners demonstrate lower levels of class A serum antibodies to benz[a]pyrene; the thermal power plant workers present increased serum levels of class G antibodies to benz[a]pyrene. These peculiarities result from only the occupational features, but do not depend on such factors as age, smoking and length of service at hazardous production. It is expedient to study specific immune reactions to benz[a]pyrene in workers of coal mines and thermal power plants, to evaluate individual oncologic risk and if malignancies occur.

Reliability Index of Wind-Solar Hybrid Power Plants using the Expected Energy Not Supplied Method

2019 ◽  
Vol 8 (4) ◽  
pp. 9449-9456
Keyword(s):  
Power Plant ◽  
Power Systems ◽  
Electricity Market ◽  
Reliability Index ◽  
Power Plants ◽  
Initial Conditions ◽  
Hybrid Plant ◽  
Total Power ◽  
Hybrid Power ◽  
Hybrid Power Plant

This paper proposes the reliability index of wind-solar hybrid power plants using the expected energy not supplied method. The location of this research is wind-solar hybrid power plants Pantai Baru, Bantul, Special Region of Yogyakarta, Indonesia. The method to determine the reliability of the power plant is the expected energy not supplied (EENS) method. This analysis used hybrid plant operational data in 2018. The results of the analysis have been done on the Pantai Baru hybrid power plant about reliability for electric power systems with EENS. The results of this study can be concluded that based on the load duration curve, loads have a load more than the operating kW of the system that is 99 kW. In contrast, the total power contained in the Pantai Baru hybrid power plant is 90 kW. This fact makes the system forced to release the load. The reliability index of the power system in the initial conditions, it produces an EENS value in 2018, resulting in a total value of 2,512% or 449 kW. The EENS value still does not meet the standards set by the National Electricity Market (NEM), which is <0.002% per year. Based on this data, it can be said that the reliability of the New Coast hybrid power generation system in 2018 is in the unreliable category.

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