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Journal articles on the topic 'Plant Maintenance and Operation'

Author: Grafiati
Published: 4 June 2021
Last updated: 12 February 2022

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1

BURASHID, K., and A. HUSSAIN. "Seawater RO plant operation and maintenance experience: addur desalination plant operation assessment1." Desalination 165 (August 15, 2004): 11–22. http://dx.doi.org/10.1016/s0011-9164(04)00208-5.

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2

Burashid, Khalid, and Ali Redha Hussain. "Seawater RO plant operation and maintenance experience: addur desalination plant operation assessment." Desalination 165 (August 2004): 11–22. http://dx.doi.org/10.1016/j.desal.2004.06.002.

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3

Furuta, Tai. "Efforts to risk informed plant operation and maintenance." Journal of the Atomic Energy Society of Japan 63, no. 9 (2021): 640–44. http://dx.doi.org/10.3327/jaesjb.63.9_640.

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4

Masumoto, Shinji, Jun Sugahara, and Takehiro Maruyama. "Efforts to risk informed plant operation and maintenance." Journal of the Atomic Energy Society of Japan 63, no. 9 (2021): 645–47. http://dx.doi.org/10.3327/jaesjb.63.9_645.

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5

Tomiyasu, Ryota, and Masayuki Hiraide. "Efforts to risk informed plant operation and maintenance." Journal of the Atomic Energy Society of Japan 63, no. 9 (2021): 648–52. http://dx.doi.org/10.3327/jaesjb.63.9_648.

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6

Balmér, Peter, and Bengt Mattsson. "WASTEWATER TREATMENT PLANT OPERATION COSTS." Water Science and Technology 30, no. 4 (August 1, 1994): 7–15. http://dx.doi.org/10.2166/wst.1994.0147.

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Operation and maintenance costs have been compiled for 20 wastewater treatment plants in the range of 7 000 to 650 000 population equivalents. Great effort has been made to exclude the effects of local conditions on the costs. Data on energy and chemical consumption and manpower are given as well as the total operating costs and the distribution of manpower, energy, chemical and other costs. The results show that costs for manpower and electricity as well as total costs on a per capita basis decrease with increasing plant size. The variation between individual plants is, however, large even when differences in local conditions are accounted for.
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7

Okawa, Y., S. Shinozuka, R. Ota, and S. Matsui. "Experience of 16 Years' Operation and Maintenance of the Fukashiba Industrial Wastewater Treatment Plant of the Kashima Petrochemical Complex – I. Operation and Maintenance." Water Science and Technology 20, no. 10 (October 1, 1988): 193–200. http://dx.doi.org/10.2166/wst.1988.0137.

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The Kashima petrochemical complex and the Fukashiba industrial wastewater treatment plant are described. The complex consists of 19 core factories (petroleum, petrochemicals, and thermal power generation) and 39 other factories (including organic chemicals, foods, metals, machinery, etc.). The total amount of industrial wastewater produced is 59,800 m3/day. The treatment plant also accepts municipal wastewater from the surrounding area, totalling 1,100 m3/d. A system for charging for the industrial wastewater has been introduced. The water quality standards for the industrial wastewater discharged to the sewerage system and the effluent of the treatment plant are described. The main treatment process is activated sludge with operational conditions of high dissolved oxygen and long solids retention time (SRT). These operational conditions solved the problems of high ammonia and refractory substances in the influent. Complete nitrification occurred under the low alkalinity conditions and the effluent COD was low due to the long SRT. Successful operation and maintenance were achieved by good co-operation between the factories and the treatment plant.
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8

Elwerfalli, Abdelnaser, M. Khurshid Khan, and J. Eduardo Munive-Hernandez. "Developing Turnaround Maintenance (TAM) Model to Optimize TAM Performance Based on the Critical Static Equipment (CSE) of GAS Plants." International Journal of Industrial Engineering and Operations Management 01, no. 01 (May 15, 2019): 12–31. http://dx.doi.org/10.46254/j.ieom.20190102.

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Many oil and gas companies have suffered major production losses, and higher cost of maintenance due to the total shutdown of their plants to conduct TAM event during a certain period and according to scope of work. Therefore, TAM is considered the biggest maintenance activity in oil and gas plant in terms of manpower, material, time and cost. These plants usually undergo other maintenance strategies during normal operation of plants such as preventive, corrective and predictive maintenance. However, some components or units cannot be inspected or maintained during normal operation of plant unless plant facilities are a totally shut downed due to operating risks. These risks differ from a company to another due to many factors such as fluctuated temperatures and pressures, corrosion, erosion, cracks and fatigue caused by operating conditions, geographical conditions and economic aspects. The aim of this paper is to develop a TAM model to optimize the TAM scheduling associated with decreasing duration and increasing interval of the TAM of the gas plant. The methodology that this paper presents has three stages based on the critical and non-critical pieces of equipment. At the first stage, identifying and removing Non-critical Equipment pieces (NEs) from TAM activity to proactive maintenance types. During the second stage, the higher risk of each selected equipment is assessed in order to prioritize critical pieces of equipment based on Risk Based Inspection (RBI). At the third stage, failure probability and reliability function for those selected critical pieces of equipment are assessed. The results of development of the TAM model is led to the real optimization of TAM scheduling of gas plants that operated continuously around the clock in order to achieve a desired performance of reliability and availability of the gas plant, and reduce cost of TAM resulting from the production shutdown and cost of inspection and maintenance.
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9

Clarke, W. N., Ed Hodges, and Robert J. Ooten. "Cost-Effective Dewatering of Municipal Treatment Plant Sludges Using Belt Presses." Water Science and Technology 22, no. 12 (December 1, 1990): 173–82. http://dx.doi.org/10.2166/wst.1990.0112.

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An evaluation was conducted at the County Sanitation Districts of Orange County (CSDOC) which led to the purchase and installation of the belt filter presses currently in use. A selection process was made including pre-qualification of bidders after an exhaustive nationwide search and study of all known existing belt filter press facilities. Subsequent methods were employed for purchasing belt filter presses of the same make and manufacturer. Operating experiences and maintenance costs as well as minor modifications which were found to be desirable were documented. The paper will discuss in some detail the design criteria, capacity, polymer addition system, performance at CSDOC Plant No. 1 and Plant No. 2, sludge characteristics and the effect of chemical conditioning. Discussion regarding operation and maintenance criteria, such as staffing, operating and maintenance modes, operational checks, belt life and belt specification, safety ventilation required for the removal of odorous materials and hydrogen sulfide, data recording, and polymer dosing is included. Cost considerations, including capital costs, as well as operating and maintenance costs for the past five years are covered.
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10

Jung, Moonho, and Jae Il Park. "Power Machinery Maintenance Process and its Economic Analysis." Advanced Materials Research 889-890 (February 2014): 1559–62. http://dx.doi.org/10.4028/www.scientific.net/amr.889-890.1559.

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In this study, an analysis is made of facility maintenance process and its modeling for economic analysis. Especially, we are looking after the modeling method for estimating its cost through input data based on facility information. This allows biding for some plant operating and maintenance orders through results of cost estimation and economic analysis. Thus, we can make proper cost sheet of plant operation and maintenance through systematic cost assessment, reliable operation and maintenance related projects in the bid through management. Furthermore, we are going to conduct a case study to apply the above mentioned model.
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11

Hua, Chi, Liang Kuang, and Dechang Pi. "Maintenance and Operation Optimization Algorithm of PV Plants under Multiconstraint Conditions." Complexity 2020 (October 26, 2020): 1–8. http://dx.doi.org/10.1155/2020/7975952.

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With the rapid increase in the photovoltaic (PV) plants, the real-time operation and maintenance of photovoltaic power generation equipment is very important. The maintenance and dispatching of decentralized power stations is still one of the key issues affecting the operation safety of photovoltaic power stations. However, most of the photovoltaic power stations in China fail to rationally optimize the utilization of resources and time. The current study puts forward effort implementation via genetic algorithm-based multiconstrained optimization methodology. The proposed study optimally overrides the traditional PV plant operation and maintenance dispatching operations with automation and reliability. The proposed study is also applicable to multiple PV plants, multiple maintainers, multipoint departure, different dispatching conditions, and cost considerations. We propose an MOOA algorithm to solve this issue, and we strongly believe that, by defining a suitable fitness function, the convergence speed and optimization ability can be greatly improved, and this study puts a forward step.
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12

Takahashi, M. "The Operation and Maintenance of Small Scale Wastewater Treatment Plants." Water Science and Technology 18, no. 7-8 (July 1, 1986): 313–18. http://dx.doi.org/10.2166/wst.1986.0303.

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Three wastewater treatment processes (oxidation ditch, extended aeration (plug flow type) and activated sludge batch reactor) which are considered to be suitable for small scale wastewater treatment plants were tested at a pilot plant, or using existing facilities to examine their methods of operation and maintenance. The objectives of this study were to determine production of excess sludge, a method of setting aeration intensity, and a method of controlling returned sludge.
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13

Velayutham, Puvanesan, and Firas Basim Ismail. "A Review on Power Plant Maintenance and Operational Performance." MATEC Web of Conferences 225 (2018): 05003. http://dx.doi.org/10.1051/matecconf/201822505003.

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This paper presents the power plant maintenance scheduling and particle swarm optimization (PSO) technique to ensure economical and reliable operation of power system. Initially problems related to the power plant maintenance scheduling in modern power systems are briefed, also explaining the need and importance of an optimum and reliable power plant maintenance system. It briefly describes the maintenance scheduling of power plant by application of PSO technique. This paper proposes power plant maintenance scheduling of a power system based on minimization of the objective function considering the economical and reliable operation of a power system while satisfying the crew/manpower and the load demand.
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14

Pagolu, Sreenivasa Rao. "Standard Maintenance Practice for Feed Pellet Operation." International Journal of Research in Engineering, Science and Management 3, no. 12 (December 16, 2020): 56–58. http://dx.doi.org/10.47607/ijresm.2020.406.

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Plant Engineering, Maintenance, Repair and over hauling are most important in manufacturing industries. The aim of this paper is to identify and suggest good standard maintenance practice for feed milling operation in an animal feed manufacturing unit. It derives various results based on practical implementation in feed mill operation and data provided are an actual drawn in feed mill in a feed manufacturing industry. The outcome is discussed and studied in compare with standard maintenance practices.
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15

Ahmeda, Sk Shafi, and Md Enamul Haqueb. "Operation and Maintenance of Secondary Reformer – Lessons from Plant experiences." Journal of Chemical Engineering 27, no. 2 (January 28, 2014): 21–25. http://dx.doi.org/10.3329/jce.v27i2.17779.

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16

Vasudeva, K. S. "Power plant operation and maintenance cost reduction control system improvements." Power Engineering Journal 5, no. 2 (1991): 73. http://dx.doi.org/10.1049/pe:19910018.

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17

Masripan, Roslizan, A. M. Leman, I. Baba, Dafit Ferianto, Supaat Zakaria, and Fahrurrazi Rahman. "The Development of Plant Maintenance Scheduling Via lnventory System for Sustainable Plant Operation." MATEC Web of Conferences 78 (2016): 01057. http://dx.doi.org/10.1051/matecconf/20167801057.

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18

Killilea, J. E., E. Colleran, and C. Scahill. "Establishing procedures for design, operation and maintenance of sewage sludge anaerobic treatment plants." Water Science and Technology 41, no. 3 (February 1, 2000): 305–12. http://dx.doi.org/10.2166/wst.2000.0085.

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In 1993 the Irish Government commissioned a strategy study to address the difficulties encountered with sludge management and disposal in this country. Many Local Authorities have complied with the recommendations of this strategy study by incorporating Anaerobic Digestion (AD) of sewage solids in the design of new and retrofitted sewage treatment plants. Irish Local Authorities have little experience in anaerobic technologies compared to the more traditional mechanical and aerobic processes. The United States Environmental Protection Agency (US EPA) developed procedures for evaluating sewage treatment plants. These Comprehensive Performance Evaluations (CPE) are described in such publications as “Retrofitting Publicly Owned Treatment Works (1989)”. The emphasis in such documentation was on aerobic secondary treatment processes. The present study developed an evaluation procedure for AD plants similar to the CPEs produced by the US EPA for secondary processes. This procedure was applied to existing and newly commissioned AD plants in Ireland in order to deduce process performance. Based on these studies, recommendation for the design, operation and maintenance of AD plants is presented. All plant operators agreed that frequent and accurate monitoring of pH and temperature was essential for adequate process control. The five existing sites were surveyed. Apart from the usual difficulties at start-up, plant operators expressed satisfaction with the anaerobic process at four of the sites. The fifth plant is currently being upgraded.
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19

Kim, Jong Choon, Sung Wook Jung, Jae Boong Choi, Yoon Suk Chang, Young Jin Kim, and In-Ju Hwang. "Development of a Neural Network-Based Real-Time Fatigue Monitoring System for the Heavy Load Carrying Facility." Solid State Phenomena 110 (March 2006): 201–12. http://dx.doi.org/10.4028/www.scientific.net/ssp.110.201.

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The heavy load carrying facility, such as ladle crane, is operating under severe working environment. It usually carries melted iron to the furnace, and thus, the accident due to crane failure may cause detrimental damage to the entire steel making factory. While the ladle crane is designed for 20 years of safe operation in a steel making company, several critical cracks due to fatigue loading have been reported during the maintenance process. In order to prevent fatal failure due to crack growth, ladle crane has been periodically inspected and maintained. However, the inspection and maintenance including repair and replacement cause the whole manufacturing line to stop, it is critical to set the appropriate inspection interval and replacement criteria. For this reason, the importance of plant maintenance (PM) has been highly raised to provide efficient plant operation. Recently, a number of engineering methodologies, such as fitness for service guidelines (FFS) and plant lifecycle management (PLM) system, have been applied to improve the plant operation efficiency. Also, a network-based business operation system, which is called ERP (Enterprise Resource Planning), has been introduced in the field of plant maintenance. However, there hasn’t been any attempt to connect engineering methodologies to the ERP PM(Plant Maintenance) system. In this paper, an engineering methodology which provides life time evaluation under fatigue loading has been implemented to the web-based ERP PM system along with real-time fatigue monitoring system. In order to monitor the real time loading, a web-based fatigue monitoring system for ladle crane has been developed and installed inside the ladle crane. For the estimation of fatigue life, 3-dimensional finite element (FE) analyses were conducted for actual transients. Finally, the fatigue life time estimation program is developed by integrating FE analysis results and real-time monitoring data. For the direct calculation of remained fatigue life, an artificial neural network (ANN) algorithm has been applied. The proposed system is expected to play a great role in determining appropriate inspection and maintenance schedule which has become critical issue for the efficient plant maintenance.
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20

Taylor, Huw D., Martin P. Gambrill, D. Duncan Mara, and Salamão A. Silva. "Upgrading a low-cost physicochemical wastewater treatment plant to solve operational problems." Water Science and Technology 29, no. 12 (December 1, 1994): 247–54. http://dx.doi.org/10.2166/wst.1994.0620.

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A comprehensive programme of jar tests utilizing lime to treat municipal wastewater in northeast Brazil showed that a supernatant could be achieved that attained the WHO (1989) guidelines for effluent reuse for unrestricted irrigation (≤ 1000 faecal coliforms per 100 ml; ≤ 1 intestinal nematode egg per litre). In the light of these findings a pilot-plant was built to investigate the continuous treatment of wastewater with lime for effluent reuse in irrigation. Bearing in mind the problems often encountered in less-developed countries with the operation and maintenance of complex wastewater treatment systems, it was decided to base the lime treatment technology on that used successfully throughout the world (in both industrialised and non-industrialised countries) to treat potable water; namely non-mechanised coagulation and flocculation, and settlement in a horizontal-flow sedimentation tank. Although the prototype pilot-plant achieved a final effluent that attained the WHO (1989) guidelines for unrestricted irrigation, a number of operational and maintenance problems were encountered. Effluent quality data has been reported previously. This paper summarises the data and describes the practical problems associated with the operation and maintenance of the lime treatment plant, and the upgrading techniques used to overcome these difficulties. The prototype plant consisted of a rapid-mix basin in which raw municipal wastewater was combined with lime slurry at a ratio that achieved a pH of greater than 11.0 after mixing; a sedimentation tank, for solid-liquid separation; and a recarbonation basin for tertiary treatment. Constant monitoring of the lime-wastewater mix pH, using a pH controller to regulate the flow of lime slurry, proved difficult. Frequent cleaning of pipework was needed to avoid clogging by the lime slurry. In a second phase of the research work, the pilot-plant was upgraded to tackle these and other operational and maintenance problems. Plant geometry was improved to prevent the sedimentation of lime solids within the delivery pipework. All pipework carrying lime slurry was set up in duplicate so that plant operation could continue during cleaning operations. An improved pH control system, which linked lime slurry flow to the pH of the lime-wastewater mix, was also installed. The design of the sedimentation tank was altered to aid the removal of sludge and the tank inlet and outlet were upgraded in order to minimise short-circuiting. Plant operation and maintenance were simplified by the design improvements and the frequency of mechanical breakdown was reduced. The pH control system was difficult to operate effectively because the pH probe became rapidly fouled by lime solids. However, gel-filled, low sodium-error pH electrodes calibrated in pH 11.0 buffer proved significantly more robust in the aggressive high-lime environment than did conventional combined glass electrodes. Options for further improving the design of a lime treatment plant are considered.
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Bhadani, Kanishk, Gauti Asbjörnsson, Paul Bepswa, Aubrey Mainza, Elibariki Andrew, Jisenha Philipo, Nkanyiso Zulu, Anthony Anyimadu, Erik Hulthén, and Magnus Evertsson. "SIMULATION-DRIVEN DEVELOPMENT FOR COARSE COMMINUTION PROCESS - A CASE STUDY OF GEITA GOLD MINE, TANZANIA USING PLANTSMITH PROCESS SIMULATOR." Proceedings of the Design Society 1 (July 27, 2021): 2681–90. http://dx.doi.org/10.1017/pds.2021.529.

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AbstractA comminution process is a material size reduction and separation process which is primarily used in the aggregates and the minerals processing industry. Knowledge related to equipment’s operation, raw material properties, operational strategies, control system, maintenance, etc. is needed to design a capable plant. New needs are arising from the industry for existing operational crushing plants such as investigation for improvements, upscaling, and downscaling of the capacity. The paper presents an application of simulation-driven development for a crushing plant in an existing gold processing plant. Due to the change in ore characteristics and the need for optimizing the cost of operation, it is required to investigate the opportunities for improvement and alternative options for downscaling the capacity of the plant. A systematic process for configuring, developing, and evaluating alternative concepts using a process simulation tool is presented. The results show the process of generating knowledge for alternative crushing plant operation settings and how the choices can be selected and eliminated using boundary conditions. The evaluation presents possible improvements and alternative concepts with their opportunities and pitfalls.
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22

Kuryło, Piotr, Joanna Cyganiuk, Adam Idzikowski, and Dudziak Michał. "Modern it Support Systems - CMMS in the Production Plant." System Safety: Human - Technical Facility - Environment 2, no. 1 (March 1, 2020): 316–23. http://dx.doi.org/10.2478/czoto-2020-0039.

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AbstractIn the present paper, the scope of the process line maintenance in the production plant has been presented. The issues associated with the basic functions and characteristics of the services dealing with this problem, which is crucial for the production plant, have been discussed. Modern CMMS (Computerized Maintenance Management Systems) have been discussed, while indicating their specific advantages, among others, the possibility of keeping records of machinery and equipment, maintenance schedules and various types of alarms, which may disrupt or suspend the operation of production facilities, so that these systems ensure the safety of fault-free operation of machinery and equipment.
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23

Lee, Jae Hyun, and Hyo Won Suh. "Design of a Plant Life Cycle Data Management System for Plant Operation and Maintenance." Journal of Korean Institute of Industrial Engineers 42, no. 3 (June 15, 2016): 241–48. http://dx.doi.org/10.7232/jkiie.2016.42.3.241.

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24

Gwinner, Robert, and Ernst Welfonder. "Benefit of the Step Data Model for Plant Operation and Maintenance." IFAC Proceedings Volumes 33, no. 5 (April 2000): 273–79. http://dx.doi.org/10.1016/s1474-6670(17)40971-2.

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25

Zhao, Lihua, and Yin Lin. "Operation and Maintenance of Coal Handling System in Thermal Power Plant." Procedia Engineering 26 (2011): 2032–37. http://dx.doi.org/10.1016/j.proeng.2011.11.2401.

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26

Welz, Zachary, Jamie Coble, Belle Upadhyaya, and Wes Hines. "Maintenance-based prognostics of nuclear plant equipment for long-term operation." Nuclear Engineering and Technology 49, no. 5 (August 2017): 914–19. http://dx.doi.org/10.1016/j.net.2017.06.001.

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27

Wenyu, Zhang, Liu Hongyong, Xu Xiaochuan, Li Ming, Ren Weixi, Ma Buyun, Ren jie, and Song Zhenyu. "Construction of digital operation and maintenance system for new energy power generation enterprises." E3S Web of Conferences 236 (2021): 02017. http://dx.doi.org/10.1051/e3sconf/202123602017.

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In view of the current increasing new energy installed capacity and the frustration in outputting clean electricity due to limited channel capacity, the new energy intelligence operation system based on big data platform technology, joint power monitoring technology and large-scale energy storage power station integrated with control technology is adopted through unified modeling and communication protocols, so as to solve the problems in information interaction and unified controlling for manufacturers of multiple wind turbine, PV, storage equipment ,and varieties of equipment types.So, by structuring the power-grid friendly wind power plant, photovoltaic power plant and the energy storage power plant, and taking the "five ascension" measures can greatly reduce the workload of the staff, improving the working efficiency and the economic benefits of the enterprise greatly, meanwhile it also provide new methods, new measures and new ideas for other new energy power plants, to realize the improving of the comprehensive benefits and social value.
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28

Wai Foon, Shyong, and Milé Terziovski. "The impact of operations and maintenance practices on power plant performance." Journal of Manufacturing Technology Management 25, no. 8 (September 30, 2014): 1148–73. http://dx.doi.org/10.1108/jmtm-12-2012-0122.

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Purpose – The purpose of this paper is to examine the impact of operations and maintenance (O&M) practices, individually and collectively, on power plant performance. Design/methodology/approach – Data were collected from more than 100 power plants in Australia and Malaysia. The reliability and validity (content, construct, and criterion) of the practice and performance measures were evaluated. Findings – Committed leadership and maintenance-oriented practices as part of a total productive maintenance (TPM) philosophy were found to be the main differentiators between high and low performing plants. Research limitations/implications – The research is cross-sectional in nature, therefore, it does not permit us to account for the lag between implementation and performance. Second, the performance measures are subjective and may be subject to response bias. Practical implications – The implication of the research findings for plant managers is that they need to allocate more “softer” resources to the O&M function if they expect high plant availability. Social implications – Apart from capacity and fuel cost, operating costs are an important source of differentiation for power plants. The implication is that reduction in operating costs is directly related to the reduction of consumer power bills. Originality/value – The reader will learn from this paper that committed leadership and maintenance-oriented practices have greater explanatory power in the regression models than employee involvement, customer focus, strategic planning, and knowledge management. This knowledge is important because it emphasises that in addition to quality management practices, which are focussed on the development of the people aspects of the organization, the plant equipment and physical assets should also be given equal emphasis, in order to improve operational performance of power plants.
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Liu, G., S. Pattanayak, P. Navaneethakrishnan, and R. Woodling. "Role of membrane autopsy in enhancing reverse osmosis plant operation." Water Practice and Technology 13, no. 1 (March 1, 2018): 106–14. http://dx.doi.org/10.2166/wpt.2018.020.

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Abstract Reverse osmosis (RO) has successfully emerged as a broadly-used commercial water purification technology in recent decades. Nevertheless, RO membrane elements, the core component of this purification process, are frequently subjected to premature degradation and performance deterioration, adversely impacting RO plant operation & maintenance. Membrane autopsy is a well-proven yet under-valued procedure for effectively assessing the condition of membranes and determining the root-cause of performance loss. This paper aims to provide a general methodology utilized commercially to perform membrane autopsy and employ three case studies to explicitly demonstrate the value addition to operators and end-users when applying membrane autopsy in (1) failure analysis and trouble-shooting, (2) operation optimization and routine monitoring, and (3) asset management and maintenance enhancement.
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Ramsh, V., M. Potapenko, and V. Sharshon. "Assessment of operational reliability of automatic control systems of biogas plants." Energy and automation, no. 1(53) (December 28, 2020): 99–108. http://dx.doi.org/10.31548/energiya2021.01.099.

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The issues of ensuring the reliability of the control system of a biogas plant should be given special attention in the design of the system, in the manufacture of all hardware, in the development of mathematical and software, in the creation of information support, during installation and commissioning, during the technical operation of the system. A research aim is development of measures on providing of operating reliability of the systems of automatic control by biogas plants due to their optimal service. The choice of the optimal strategy allows you to achieve the best results from the operation of biogas plants without attracting additional resources. The importance of the early resumption of the operation of control systems after failures, as well as planning and organizing their effective preventive maintenance, is noted. The need for collection, processing, analysis and use of data on the reliability of control systems is noted. According to the obtained values of failure time and recovery time, the values of the readiness factor for devices of each type and for the control system as a whole are determined. Analysis of the obtained data on failure time, recovery time after failure, readiness factor will allow to develop organizational and technical measures, the implementation of which will increase the operational reliability of the control system of the biogas plant. To assess the reliability, a complex integral indicator is proposed that characterizes the state of normal functioning of the system. Changing the strategy of preventive maintenance and the organization of work to restore the operation of system devices after failures, based on the analysis of the value of the coefficient of normal functioning, it is possible to obtain the necessary values of the reliability of automatic control systems for biogas plants.
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31

Parker, D., S. Krugel, and H. McConnell. "Critical process design issues in the selection of the TF/SC process for a large secondary treatment plant." Water Science and Technology 29, no. 10-11 (October 1, 1994): 209–15. http://dx.doi.org/10.2166/wst.1994.0763.

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The Greater Vancouver Sewerage and Drainage District (GVS&DD) is a major regional wastewater agency serving Vancouver, Canada and surrounding municipalities. It was recently required to upgrade its largest treatment plant from primary treatment to secondary treatment. After initial screening of 17 processes, three were given detailed examination: the oxygen activated sludge process (OAS), the air activated sludge process (AAS), and the trickling filter/solids contact process (TF/SC). A comprehensive alternative analysis was completed consisting of process designs, plant layouts, and contractor-type construction cost estimates. Operations and maintenance costs were prepared from staffing plans, and estimates were made for energy and chemical use. Plants were surveyed and visited to address questions such as ease of operations and reliability. The TF/SC process was selected based upon its lower present value and O&M costs, ease of operation, robustness, and lower energy usage.
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32

Argueta Moreno, Jesús David. "TOTAL PRODUCTIVE MAINTENANCE (TPM) NEW TRENDS, ALONG ENERGY FIT PLANT MAINTENANCE PROTOCOLS (2010-2020)." Economía y Administración (E&A) 11, no. 2 (December 8, 2020): 79–89. http://dx.doi.org/10.5377/eya.v11i2.10521.

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The main goal of this descriptive study is to examine the contemporary High-Performance Manufacturing (HPM) Energy Fit Trends that are triggered by the Total Productive Maintenance (TPM) practices, manifest along the different manufacturing scenarios. The data presented on this study, was gathered from various sources, mainly from the Industrial Maintenance & Plant Operation anual report, as well as from the US Energy Informatión Administratión (EIA). This analysis explores several theoretical and managerial implications of the TPM practices and their direct articulation with Energy Fit Plant Maintenance Protocols.
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Rocca, Ralph J. Della, and John D. Stehn. "FFG7 Class Frigate and DD963 Class Destroyer Marine Gas Turbine Propulsion Systems Maintenance and Operational Training Facility." Marine Technology and SNAME News 22, no. 01 (January 1, 1985): 1–27. http://dx.doi.org/10.5957/mt1.1985.22.1.1.

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The need for a gas turbine training facility became apparent with the introduction into the U.S. Navy fleet of the first ships of the FFG7 Frigate and DD963 Destroyer Classes with gas turbine propulsion plants. This facility, constructed at the Great Lakes Naval Training Center, provides "hands-on" training for maintenance and operation of marine gas turbines and associated propulsion plant components and controls and their piping and electrical systems. The Navy intends to train at this facility approximately 1000 personnel per year in the use of their latest and newest propulsion plants. The design of the facility reproduces as closely as possible the existing machinery and control spaces of the two different classes of ships and integrates them into a single main building with the school and the mechanical equipment wings. This paper presents an overview of the need for well-trained, qualified naval personnel to man the expanding fleet of marine gas turbine propulsion systems, existing training facilities and the various stages in the development of the FFG7/DD963 Gas Turbine Maintenance and Operational Training Facility. In regard to the facility, the paper discusses the planning and managing of the project; development of the designs for the building and propulsion plants; construction of the building facilities and FFG7 plant; the fabrication, transportation and erection of the FFG7 within the building; and the testing and operation of the FFG7 plant since light-off. Major emphasis is given to the FFG7 plant since the DD963 plant is being reconsidered in conjunction with the CG47 upgrading and is awaiting a decision to proceed.
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Chang, Choong-koo. "Blockchain for Integrated Nuclear Power Plants Management System." Information 11, no. 6 (May 26, 2020): 282. http://dx.doi.org/10.3390/info11060282.

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In nuclear power plants, plant management systems are not only very important for operation and maintenance of the facilities, but also play a very important role in analyzing and reporting the events to the authorities when a failure or accident occurs in the facility. In addition, it is also important to ensure that event records are managed transparently so as not to cause any attempt to cover up events. Therefore, this paper proposes a tamper free plant operation system by applying blockchain technology to the integrated plant management system of Korea hydro and nuclear power (KHNP). As a result, this paper will contribute to improving public acceptance by eliminating distrust in safe operation of nuclear power plants.
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35

Mateo Pérez, Vanesa, José Manuel Mesa Fernández, Francisco Ortega Fernández, and Joaquín Villanueva Balsera. "Gross Solids Content Prediction in Urban WWTPs Using SVM." Water 13, no. 4 (February 8, 2021): 442. http://dx.doi.org/10.3390/w13040442.

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The preliminary treatment of wastewater at wastewater treatment plants (WWTPs) is of great importance for the performance and durability of these plants. One fraction that is removed at this initial stage is commonly called gross solids and can cause various operational, downstream performance, or maintenance problems. To avoid this, data from more than two operation years of the Villapérez Wastewater Treatment Plant, located in the northeast of the city of Oviedo (Asturias, Spain), were collected and used to develop a model that predicts the gross solids content that reaches the plant. The support vector machine (SVM) method was used for modelling. The achieved model precision (Radj2 = 0.7 and MSE = 0.43) allows early detection of trend changes in the arrival of gross solids and will improve plant operations by avoiding blockages and overflows. The results obtained indicate that it is possible to predict trend changes in gross solids content as a function of the selected input variables. This will prevent the plant from suffering possible operational problems or discharges of untreated wastewater as actions could be taken, such as starting up more pretreatment lines or emptying the containers.
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36

Antonov, Aleksandr V., Gennady A. Yershov, and Olga I. Morozova. "Justification of the nuclear power plant safety and operating efficiency in selection of maintenance and repair parameters." Nuclear Energy and Technology 6, no. 1 (March 27, 2020): 55–61. http://dx.doi.org/10.3897/nucet.6.51782.

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Nuclear power plants (NPP) are subject to stiff requirements as to the cost effectiveness of their operation. However, since the NPP operation may be associated with the occurrence of severe environmental, social, political, material and other consequences as the result of nuclear and radiological accidents at NPPs, ensuring the specified level of the NPP safety is an operational task of the utmost importance. The current practice of the NPP design and operation suggests that the objectives involved in improving the efficiency of operation and those of ensuring the NPP safety level required by federal standards and regulations (NP-001) are achieved in isolation: no issues of ensuring high efficiency of the NPP operation are taken into account when addressing the issues involved in ensuring the safety of the NPP and, vice versa, it is a priori assumed that the required level of safety is ensured at any time when high efficiency of operation is achieved. The reason for this is the absence of procedures that make it possible to assess, in an integrated manner, the interdependence of economic and technological factors. The paper describes some of the methods to raise the efficiency of the NPP operation by selecting the best possible NPP maintenance and repair (M&R) strategies leading to high utilization and capacity factor values. A distinctive feature of the proposed techniques is that the efficiency of the NPP operation is proposed to be improved while ensuring at the same time the required level of the NPP safety with any NPP configuration.
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37

Morris, Andrew, John P. Dear, Miltiadis Kourmpetis, Chris Maharaj, Amit Puri, and Alexander D. Fergusson. "Monitoring Creep Strain in Power Station Engineering Plant." Applied Mechanics and Materials 7-8 (August 2007): 31–36. http://dx.doi.org/10.4028/www.scientific.net/amm.7-8.31.

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Cost effective and reliable operation of a power station plant and achieving low carbon dioxide emissions can be very dependent on maintenance activities. Planning maintenance to minimise the down-time of the plant is a key cost factor. It is important to have the latest data as to the age and state of the components and parts at the time of plant shut down. Indeed, deciding on the best time to shut down the plant for maintenance can depend upon trends in these data. For steam pipes, the required ageing information is the creep strain rate. These creep strain data obtained at shut down provide key information as to the needed replacement of pipes to maintain reliable plant operation. This paper presents the E.ON UK ARCMAC creep strain measurement systems that are being further developed by Imperial College London with the use of DIC and other techniques.
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38

Al-Turki, Umar, Salih Duffuaa, and M. Bendaya. "Trends in turnaround maintenance planning: literature review." Journal of Quality in Maintenance Engineering 25, no. 2 (May 7, 2019): 253–71. http://dx.doi.org/10.1108/jqme-10-2017-0074.

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PurposeTurnaround maintenance (TAM) is a planned stoppage of production for conducting a comprehensive maintenance of equipment or plant with the purpose of improving plant availability and performance. The purpose of this paper is to investigate trends in the operation and management of TAM, as reported in the literature, and identify gaps, in the context of a system approach that views a plant as part of a network of a supply chain.Design/methodology/approachThis literature review is based on over 80 subject-relevant papers and uses content analysis. The literature subjects are classified into several managerial areas that include organization, planning, scope and risk analysis, execution, performance measurement and learning. The gap in the literature is identified in light of the proposed system view for TAM.FindingsThe system view of TAM opens new opportunities for new research areas for improving the operation and management of TAM. These areas include optimizing TAM scheduling and developing methods for managing risks along the entire business supply chain. In addition, new approaches for collaboration, sharing knowledge, best practices and expertise within the supply chain become necessary for effective TAM planning and control.Originality/valueThis paper reviews the literature and provides a new classification of TAM. It adopts the system view for TAM that has brought new insights in the operation and management of TAM. New trends for research in the area of TAM are identified.
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39

Park, Young Jae, Sang Min Lee, H. S. Yim, Jae Boong Choi, Young Jin Kim, E. C. Roh, and B. I. Lee. "Development of a Knowledge-Based Information Management System for Plant Maintenance." Key Engineering Materials 261-263 (April 2004): 789–96. http://dx.doi.org/10.4028/www.scientific.net/kem.261-263.789.

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In this paper, a knowledge-based information system for the plant operation of steel making company has been proposed. The system, which is named as K-VRS(Knowledge-based Virtual Reality System), provides a connection between ERP plant maintenance module and knowledge-based engineering methodologies, and thus, enables network-based highly effective plant maintenance process. The developed system is expected to play a great role for more efficient and safer plant maintenance.
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40

이창희 and 진호현. "A Basic Study for the Contract of Offshore Plant Operation and Maintenance." 법과정책 23, no. 1 (March 2017): 143–86. http://dx.doi.org/10.36727/jjlpr.23.1.201703.006.

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41

Koth, H., and K. Oeder. "Advantages of intelligent field modules for nuclear power plant operation and maintenance." Computer Standards & Interfaces 21, no. 2 (June 1999): 135. http://dx.doi.org/10.1016/s0920-5489(99)92060-3.

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42

bin Hussin, Hilmi, Ainul Akmar Mokhtar, and Masdi Muhammad. "Identification of Critical Factors to System Performance Using Availability Modeling and Simulation Analysis." Applied Mechanics and Materials 490-491 (January 2014): 1759–63. http://dx.doi.org/10.4028/www.scientific.net/amm.490-491.1759.

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Availability analysis presents a means to understand the impact of existing maintenance system and maintenance resources to the overall system operational availability. The practical method for conducting availability analysis of a plant system at operation phase is illustrated and discussed via a case study of an acid gas removal system of gas processing plant. This study demonstrates that the availability modeling and simulation is effective in assessing the existing and future system configurations and determining possible impacts and critical factors to systems availability. These findings can significantly assist management to make right actions in improving plant system performances.
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43

Katsiris, N., and A. Kouzeli-Katsiri. "Performance and Operation of Small Activated Sludge Plants in Tourist Areas." Water Science and Technology 21, no. 1 (January 1, 1989): 67–75. http://dx.doi.org/10.2166/wst.1989.0007.

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Small scale activated sludge plants are used extensively in tourist areas for the treatment of wastewaters from hotels and other tourist establishments. A recent survey carried out in a big tourist island of Greece showed that the majority of small plants did not perform satisfactorily. The most important problems identified were associated with diurnal flow fluctuations, inadequate control of air supply and sludge return rates, accumulation of grease and fats in the plant and bad design. Another important problem appeared to be the lack of trained personnel for the operation and maintenance of the plant. These problems are discussed in detail and possible measures are presented. Experimental results from the monitoring of two small extended aeration plants confirmed the bad effect of sudden surges of flow on effluent quality. Moreover it was found that the time required for the startup of the plant was approximately six weeks.
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44

Kareem, Jamal Ahmed Hama, Kadhim Faraj Arif Saeed, and Omar Mustafa Muhammad Faraj. "Maintenance Practices in Poor Uptime of Operating Equipment Toward Dynamic of Business Issues." International Journal of Innovation and Technology Management 16, no. 02 (April 2019): 1950017. http://dx.doi.org/10.1142/s0219877019500172.

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Nothing lasts forever and all the equipment in a plant has associated with it some predefined life expectancy or operational life. Maintenance practices are the works of keeping the equipment of the plant in good condition for operation. However, the equipment that does not receive adequate maintenance tends to deviate from optimal performance. This can lead to non-control of degraded processes and product volatility, affecting in turn the dynamics of many business issues in industrial organizations. Given the importance of the foregoing, the current study tried to investigate the role of the set of maintenance practices in the poor uptime of operating equipment toward the dynamics of business issues in industrial companies. To achieve this end, the study was performed by conducting a questionnaire survey within the firms of the Kurdistan region of Iraq that have at least 100 employees. The results of the study revealed that improper maintenance practices play a great role in the poor uptime of operating equipment toward the negative dynamic of many business issues such as low customer satisfaction due to production schedules absent from customer shipment commitments, increased safety risks quantitatively and the high cost health losses, especially with the occurrence of major malfunction in operating equipment.
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45

Xue, Wangyu, Xiu Li, and Biqing Huang. "Health diagnosis of nuclear power plant." International Journal of Advanced Robotic Systems 16, no. 5 (September 1, 2019): 172988141988065. http://dx.doi.org/10.1177/1729881419880654.

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At present, nuclear power plant is developing rapidly, and its application has been involved in many aspects including life, military, industry and many other important fields, bringing benefits to people’s life. However, the nuclear power plant has a relatively special structure. Once a safety accident occurs, the consequences will be unimaginable, and the cost of its operation and maintenance will be relatively high. Therefore, how to effectively diagnose the health status of the nuclear power plant is an urgent problem to be solved. On the above-mentioned research background, we need to study nuclear power plant health diagnosis method. Considering the characteristic of the nuclear power plant system and special failure mode, both the safety and economy, a health condition diagnosis method based on analytic hierarchy process and fuzzy comprehensive evaluation method is proposed for the structural characteristics and functional characteristics of nuclear power plants. According to the special failure mode and complex system structure of nuclear power plant, the evaluation index system based on failure mode is constructed by laying the system using the hierarchical analysis method, and the system is scored by fuzzy comprehensive evaluation method. The health status makes a coarse-grained diagnosis and provides a reference for the development of the operation and maintenance strategy.
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46

Kim, Byung Chul, Bongcheol Kim, Sangjin Park, Hans Teijgeler, and Duhwan Mun. "ISO 15926–based integration of process plant life-cycle information including maintenance activity." Concurrent Engineering 28, no. 1 (December 19, 2019): 58–71. http://dx.doi.org/10.1177/1063293x19894041.

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Many organizations in different locations with different cultures and languages participate in the construction and operation of process plants. The data generated by each stakeholder involved in the plant life-cycle are closely related to each other. Therefore, it is important to link and integrate the various data created by each stakeholder. In this study, a method of integrating plant life-cycle data, including the equipment maintenance history, was proposed based on the International Organization for Standardization 15926 standard. To this end, a data model for integrating plant life-cycle data, including maintenance, was developed using the International Organization for Standardization 15926 standard. The proposed method was validated by developing a prototype system and performing experiments converting and visualizing life-cycle data, including maintenance history in the International Organization for Standardization 15926 format, using sample data from a refinery plant.
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47

Gumenyuk, D., V. Demianiuk, A. Ilina, and I. Shevchenko. "Perspectives of Optimization of Technical Services and Maintenances Using Risk-Informed Decision-Making at NPPs in Ukraine." Nuclear and Radiation Safety, no. 1(81) (March 12, 2019): 10–16. http://dx.doi.org/10.32918/nrs.2019.1(81).02.

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In most cases, when it goes about maintenance and repair optimization, the repair concept based on technical state of equipment is considered. This article describes the approach to maintenance and repair optimization at nuclear power plants by their transfer from the outage period to unit operation at power. The analysis of maintenance and repair optimization at foreign NPPs is carried out. The U.S. experience in reducing the outage duration is described. The article presents information on the pilot maintenance and repair optimization project at Zaporizhzhya NPP unit 2. The US Department of Energy through Argonne National Laboratory provides support in the implementation of the project in Ukraine focused on maintenance optimization of safety important systems based on risk-informed configuration management. The scope of this Project involves technical engineering analyses, plant personnel training, a study of improved economic performance indicators, and development of new strategies for NPP configuration, maintenance and operation. In order to optimize plant oeration, it is necessary to analyze plant commitments and requirements using effective, unbiased engineering assessments. Plant specific Probabilistic Risk Assessment combined with other engineering analyses techniques will be used for these assessments. This article also describes the results of the analysis of the preparedness of the Ukrainian regulatory framework for the implementation of the Project on maintenance optimization. The analysis focused on the U.S. and Ukrainian regulations and documents of the IAEA and WENRA international organizations related to maintenance optimization using riskinformed management of plant configuration. Based on the comparative analysis results, the authors identified possible limitations stipulated by non-compliance of the Ukrainian nuclear and radiation safety regulatory framework with the U.S. regulatory and methodological documents used for maintenance and repair optimization at the U.S. NPPs. In particular, the overview of USA regulations leads to the conclusion that they contain exhaustive requirements for the application of maintenance using risk-informed plant configuration management at all stages of its implementation, starting with the requirements for the alternative approach to maintenance and ending with the requirements for maintenance performance monitoring. Ukrainian regulations in turn contain only general provisions and areas for potential application of risk-informed approaches in operation and inspection. It should also be noted that the U.S. maintenance optimization methodology uses criteria based on the core damage frequency and large early release frequency. However, besides core damage frequency Ukraine uses the emergency release frequency criterion that does not correspond to the definition for large early release frequency used in the U.S.
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Lim, B. S., J. U. Kim, and H. D. Park. "Improvement of existing nightsoil treatment plant for nitrogen removal." Water Science and Technology 49, no. 5-6 (March 1, 2004): 273–79. http://dx.doi.org/10.2166/wst.2004.0764.

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This study was performed to increase the treatment efficiency and to reduce operation and maintenance costs of the existing nightsoil treatment plant. The existing nightsoil plant was not established by the nitrogen removal process, and was operated ineffectively with deterioration of treatment efficiency rate, and according to the demand of many operators, the expenses of operation and maintenance have become excessive. Modified plant has been changed through two steps. The first step, liquid decayed tank using closed oxidation ditch is operated to increase retention time only for nitrification. The second step, modified liquid decayed tank including anoxic tank is operated, it has an excellent nitrogen removal rate. In first step, when HRT was increased from 10 days to 13 days in liquid decayed tank including aeration tank using closed oxidation ditch, TN concentration of effluent appeared below 51 mg/l less than discharge limit, 60 mg/L. In second step, when anoxic tank and oxic tank were installed, HRT has been increased to 13 days and 26 days, respectively. Then average TN concentration of effluent was detected less than 13 mg/L for over one year. The simple process modified the existing two processes resulted in the reduction of costs for operation and maintenance in the personnel, chemical, and filter change sphere.
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Pophaley, Mahesh, and Ram Krishna Vyas. "FORTIFICATION OF PLANT MAINTENANCE MANAGEMENT PRACTICES: ROLE OF SIX SIGMA APPROACH." Brazilian Journal of Operations & Production Management 12, no. 1 (June 30, 2015): 56. http://dx.doi.org/10.14488/bjopm.2015.v12.n1.a6.

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Today, only those companies which are capable of permanent and fast adaptation to quickly-changing conditions can survive. Six Sigma is at the top of the agenda for many manufacturing companies that try to reduce cost, process variability and improve productivity. In order for a company to remain competitive and maintain maximal efficiency and availability of all its plants and machinery, what is needed is an approach different from the traditional concept of doing plant maintenance. In this paper an attempt is made to investigate the gap between plant maintenance practices and Six Sigma approach that led us to suggest that there is a great deal of scope in the prescription of Six Sigma in maintenance theory. Further this paper explores the possibilities of enhancing the usefulness and effectiveness of plant maintenance practices by the integration with established Six Sigma Operation Techniques (SSOT). Thus to enhance maintenance deployment in manufacturing environments, a new roadmap for core maintenance professionals for integration has been proposed. The conclusion that can be drawn from this on going research is that, in order to reach its goals, the maintenance departments must implement Six Sigma program to change the way in which traditional practices employ at work for continual improvement of the maintenance function.
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50

Fahmi, Fahmi. "STRATEGI OPERASIONAL PEMBANGKIT LISTRIK TENAGA AIR (PLTA) DEPARTMENT MAINTENANCE & UTILITIES PT. VALE INDONESIA." JBMI (Jurnal Bisnis, Manajemen, dan Informatika) 14, no. 1 (February 6, 2018): 27–34. http://dx.doi.org/10.26487/jbmi.v14i1.3306.

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Abstrak: Untuk menghadapi tantang, sebuah perusahaan harus mempersiapkan strategi operasional yang baik dan merumuskan strategi prioritas yang tepat, efektif dan efisien yang harus dilakukan oleh manajemen. Penelitian ini bertujuan untuk menganalisis faktor-faktor internal yang menjadi kekuatan dan kelemahan dalam penentuan strategi prioritas, faktor-faktor eksternal yang menjadi kekuatan dan kelemahan dalam penentuan strategi prioritas, dan strategi prioritas yang paling sesuai dengan kebutuhan pada department Utilites operation of hydro plant dalam mencapai tujuannya dengan mengoptimalkan resource yang sudah ada menggunakan analisis SWOT dan AHP. Penelitian ini dilaksanakan di PT. Vale Indonesia Tbk. departemen Maintenance and Utilities pada bagian Utilities operation of hydro plant. Pengumpulan data dilakukan dengan mengkombinasikan metode wawancara mendalam, pengamatan (observasi) dan telaah dokumen, dan angket. Berdasarkan hasil perhitungan AHP terhadap analisis faktor lingkungan internal yang menjadi kekuatan dan kelemahan dalam penentuan strategi prioritas pada bagian Operation of hydro plant menunjukkan komitmen karyawan bagian operation of hydro plant untuk bekerja sesuai dengan visi dan misi bagian operasional hydro plant menjadi kekuatan yang tertinggi dengan bobot 0.423. Untuk Kejenuhan dengan rutinitas kerja merupakan kelemahan Department Utilities of Hydro plant dengan bobot tertinggi 0.426. Berdasarkan hasil perhitungan AHP terhadap analisis faktor lingkungan eksternal Pengembangan potensi dan kompetensi individu karyawan memiliki bobot tertinggi sebesar 0.418. Sedangkan penyakit akibat kerja shift merupakan faktor ancaman terbesar dengan bobot 0.415. Berdasarkan hasil perhitungan AHP terhadap penentuan strategi operasional dalam meningkatkan kinerja pada bagian Operation of hydro plant secara berurut yaitu memberikan kepastian jenjang karir secara konsisten dan periodic sesuai dengan hasil uji kompetensi masing-masing karyawan, Mempublikasikan prestasi dan kinerja karyawan operation of hydro plant ke lintas department sehingga meningkatkan kepercayaan diri dan loyalitas pekerja, menyediakan layanan fasilitas kesehatan 24 jam di area kerja serta fasilitas olahraga, melakukan rotasi personnel shift karyawan operasional bagian hydro plant, memberikan kesempatan kepada masyarakat lokal untuk ikut sekolah pelatihan yang disiapkan oleh perusahaan sebelum dilakukan rekrutmen karyawan baru.Kata kunci: SWOT, AHP, Strategi Operasional
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