scholarly journals Optimization of Spraying Process in Thermal Power Plant using Robot

2021 ◽  
Vol 10 (3) ◽  
pp. 223-226
Author(s):  
Shravankumar Shravankumar ◽  
G.R. Selokar ◽  
B Nageshwar Rao
Keyword(s):  
Power Plant ◽  
Thermal Spray ◽  
Thermal Power Plant ◽  
High Speed ◽  
Thermal Power ◽  
Research Work ◽  
Spray Coating ◽  
Thermal Spray Coating ◽  
Robot Kinematics ◽  
Spraying Process

To synthesize the surface of the metal bodies, a thermal spray coating is used. There is a great need for this new coating technology in today's progressive world where modification of the substrate material is carried out a great deal. Thermal spray covering, electroplating, powder metallurgy and other metallurgical processes are used very quickly in the field of surface modification. We have presented the summary of all different types of thermal spray coating in this review paper and the advantages of high-speed oxy fuel coating. There is a literature review and an experiment was conducted on behalf of that to demonstrate the effect of coating on mild steel plate. Through Robot, we present a proposed optimization of the spraying process in a thermal power plant. We will explore the thermal spraying and oxidation effect on deposited aluminium and bronze in this research work. We present a detailed assessment of the robot kinematics and optimize the generation of the robot trajectory with a focus on the constant relative scanning speed.The results show that the motion behavior of each axis of robot permits to identify the motion problems in the trajectory. This approach enables the generation of robot trajectories in a limited working envelope to be optimised.

Thermal Power Plant Modelling with Fault Coverage Stochastically

2016 ◽  
Vol 6 (3) ◽  
pp. 28-44
Author(s):  
Nupur Goyal ◽  
Mangey Ram ◽  
Akshay Bhardwaj ◽  
Amit Kumar
Keyword(s):  
Power Plant ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Research Work ◽  
Fault Coverage ◽  
Supplementary Variable ◽  
Reliability Measures ◽  
Variable Technique ◽  
Complex Process ◽  
Plant Modelling

The present research work proposes a mathematical model of thermal power plant to analyse its performance through reliability measures. Evaluation of reliability measure for thermal power plant is a complex process. The thermal power plant is modelled using Markov process and explored the reliability measures with supplementary variable technique. Also the expected profit to the operation and maintenance of the thermal power plant has been discussed. Failures exist in the thermal power plant affect the performance of the plant, so, to enhance the performance of the plant, authors employs fault coverage technique and demonstrated the effect of fault coverage and component failure on reliability measures graphically by taken some numerical examples for the practical utility.

Failure Mode and Effect Analysis of a Thermal Power Plant for Enhancing its Reliability

2011 ◽  
Vol 110-116 ◽  
pp. 2969-2975 ◽  
Author(s):  
N.S. Bhangu ◽  
Rupinder Singh ◽  
G.L. Pahuja
Keyword(s):  
Power Plant ◽  
Failure Mode ◽  
Thermal Power Plant ◽  
Failure Modes ◽  
Thermal Power ◽  
Research Work ◽  
Component Level ◽  
Effect Analysis ◽  
Thermal Plant

Failure Mode and Effect Analysis (FMEA) has a well deserved reputation for systematic and thorough evaluation of failures at the system, sub-system or component level in all manufacturing and processing sectors. These organizations are looking for the final product to be “safe and reliable”. FMEA helps designers to identify and eliminate/control dangerous failure modes, minimizing damage to the system and its users. This paper, as an extension to the prior research work, introduces an insight into the reasons of failure and its effects in a thermal power plant opted for the case study, based on conceptual designs in context of FMEA. The analysis takes into account preparation of appropriate diagnostic and maintenance procedures with the aim of enhancement of thermal plant reliability. The FMEA technique used may be helpful for the design and maintenance departments to curtail the downtime of the plant.

scholarly journals Current Status of Prevention of Hot Corrosion of Boiler Steels with Thermal Spray Coating

2018 ◽  
Vol 7 (2) ◽  
pp. 121-126
Author(s):  
Gurdeep Singh ◽  
Indermeet Singh ◽  
Khushdeep Goyal
Keyword(s):  
Thermal Spray ◽  
Hot Corrosion ◽  
Operating Temperature ◽  
Thermal Power ◽  
Operating Cost ◽  
Spray Coating ◽  
Thermal Spray Coating ◽  
Current Status ◽  
Steel Alloys ◽  
Boiler Steels

In the thermal power plant, various conventional steels are used to manufacture boiler components. Due to high operating temperature of these boilers, these conventional steels are unable to resist hot corrosion. In recent years researchers have used various techniques to resist hot corrosion out of these techniques, thermal spray coating process have gained lot of interest due to the ease of coating, low operating cost, and various other advantages. With these coating processes a thin layer of coating material is developed over steel alloys surface which creates hindrance to penetration of corroding element and hereby reduce corrosion. This paper is an attempt to present a comprehension the study related to hot corrosion of thermal spray coating on boiler steels at high temperatures.

Standard Critical Path and Selection of Most Economic and Quality Contractors for Construction of Thermal Power Plant: A Case Study in NTPC

Metamorphosis ◽  
2019 ◽  
Vol 18 (2) ◽  
pp. 103-118
Author(s):  
D. K. Choudhury
Keyword(s):  
Power Plant ◽  
Thermal Power Plant ◽  
Power Plants ◽  
Critical Path ◽  
Thermal Power ◽  
Research Work ◽  
Decision Under Risk ◽  
Project Construction ◽  
The Cost ◽  
Selection Of

In India, most of the thermal power plants were built by National Thermal Power Corporation (NTPC) Ltd and different state electricity boards. The thumb rule indicates that out of the total project construction cost, 70 per cent goes to the cost of project materials, while 30 per cent goes to the cost construction work which leads us to select the most competitive material suppliers and construction contractors. The objectives of this research work are (a) to select a contractor based on cost economy, (b) to find out the standard critical path for constructing a thermal power plant, and (c) to identify the critical activities in constructing a 500 MW thermal power plant. Through literature review, six important factors were identified to judge the quality of the contractor before awarding the contract. In project management, the selection of contractor on the basis of probability of their performance comes within the purview of decision under risk, and hence decision tree has been used as a methodology for the selection of contractor. For computing the critical path, the project network for the construction of the thermal power plant was constructed. The five thermal power projects of NTPC—NTPC Korba, NTPC Talcher, NTPC Rihand, NTPC Sipat, and NTPC Simhadri—were considered, and the construction data of these five projects were used to compute the critical path. Since the completion data of different activities of five projects at different geographical locations with different climates, different site conditions, and different conglomerate of workers were used, so the critical path estimated was accepted as the standard critical path.

Physico-chemical analysis of selected industrial effluents and its treatment using novel biocarbon

2020 ◽  
Vol 10 (3) ◽  
pp. 69-76
Author(s):  
Sundaram R ◽  
Singanan M
Keyword(s):  
Heavy Metals ◽  
Power Plant ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Research Work ◽  
Industrial Effluent ◽  
Industrial Effluents ◽  
Leather Industry ◽  
Physico Chemical ◽  
Industry Wastewater

In the present research work, Industrial effluents from a sugar industry, thermal power plant and a leather industry wastewater are collected in selected locations in Chennai region during January 2018 to December 2019. In the present research work, the following essential physico-chemical parameters such as colour, pH, electrical conductivity, TDS, TSS, TH, DO, BOD, COD and metals such as calcium and magnesium, anions of chloride, sulphate and nitrate was determined. In addition, selected heavy metals for instance Cu, Cd, Pb, Ni and Cr which are commonly found in the industrial wastewater is quantified for assessing the level of pollution load in the wastewater. In the present research work, the removal of heavy metal pollutants and the organic load was carried out using AIBC as adsorbent and the results indicates that, in sugar, thermal power plant and leather industry wastewater, the percent removal of Cu is 91.23, 90.32 and 81.12 and Cd is 92.34, 94.64 and 92.20, Pb is 93.64, 95.15 and 90.74, Ni is 90.59, 94.79 and 82.31 and Cr is 93.85, 92.38 and 84.95 respectively. In the present investigation, the use of biocarbon produced from the leaves of Lawsonia inermis and interfaced with alumina as support material was used as an effective, low-cost and inexpensive material for the removal of heavy metals Cu, Cd, Pb, Ni and Cr from selected industrial effluent for the treatment of wastewater.

scholarly journals Analysis on the Causes of Cracking at the Last Stage Blade of the Low-pressure Rotor in thermal power plant

2020 ◽  
Vol 165 ◽  
pp. 06010
Author(s):  
Liming Xie ◽  
Feng Tian ◽  
Jun Liu ◽  
Hao Chen
Keyword(s):  
Power Plant ◽  
Thermal Power Plant ◽  
High Speed ◽  
Static Load ◽  
Thermal Power ◽  
Low Pressure ◽  
Transverse Cracking ◽  
Combined Action ◽  
Last Stage ◽  
Sem Microstructure

Transverse cracking occurred in the blade body of the last stage of the low pressure rotor of a 200MW unit in a thermal power plant. The causes of blade cracking were analyzed by means of macro morphology, SEM, microstructure, mechanical properties, chemical composition and energy spectrum analysis. The results show that the corrosive Cl- accumulates on leaves, and then combined action of tensile stress is formed with the static load and dynamic load during the blade operation, and the stress corrosion microcracks had been conceived in the Cl- corrosion region. Under the long period cyclic excitation stress of the blade during the rotor rotation at high speed, the crack source extends in fatigue mode, finally resulting in cracking.

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