Relevant bibliographies by topics / Piping (plumbing system components)

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Piping (plumbing system components)'

Author: Grafiati
Published: 24 February 2023
Last updated: 27 February 2023

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Journal articles on the topic "Piping (plumbing system components)"

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Meilani, Sarah, Ariani Dwi Astuti, and Ratnaningsih Ratnaningsih. "DESIGN OF PLUMBING SYSTEM AT TUNJUNGAN PLAZA APARTMENT, SURABAYA." INDONESIAN JOURNAL OF URBAN AND ENVIRONMENTAL TECHNOLOGY 1, no. 1 (December 9, 2017): 82. http://dx.doi.org/10.25105/urbanenvirotech.v1i1.2406.

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<strong>Aim:</strong> This study of plumbing system plan is aimed at planning a plumbing system that is compatible with clean water, waste water and rain water management at Tunjungan Plaza apartment, Surabaya City, Indonesia according to SNI 8153-2015, and meet 5 aspects of safety, security, simplicity, beauty, and economy. It applies water supply system which commonly used for tall buildings, namely Roof Tank system. <strong>Methodology and Result</strong>: Plumbing system planning methods are collecting and analyzing fluctuation in water use, planning clean water and recycled water systems by endorsing alternative piping for clean water and recycled water. In addition to water supply, recycled water system that utilizes waste water to be recycled for flushing closets and watering plants also required to be implemented. Average daily water consumption is 268 m<sup>3</sup>/day for clean water and 44 m<sup>3</sup>/day for recycled water with the capacity of ground water tank for clean water is 564.54 m<sup>3</sup> and recycled water is 62 m<sup>3</sup>. <strong>Conclusion, significance and impact study:</strong> Clean water supply system will implement roof tank system and recycled water will reutilize wastewater for flushing on toilet tank and watering the plants. Waste water use separated system between grey water and black water and then distributed to STP to be treated and reused for flushing water closet and watering plants. Rain water goes to infiltration well by gravity through designed 1 well. Total amount of investment of plumbing equipment is Rp 2,157,697,501,- with cost of water supply per unit Rp 4,445,643,- meanwhile waste water piping cost per units is Rp 1,070,711,-.
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Savarkar, Ms Vaishnavi, Dr Tushar G. Shende, and Mr Narendra Bobde. "Review on Effect of Plumbing System in Construction." International Journal for Research in Applied Science and Engineering Technology 11, no. 1 (January 31, 2023): 935–39. http://dx.doi.org/10.22214/ijraset.2023.48719.

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Abstract: Effect of Plumbing System in Construction plays an important role. Pipe damage and defects are part of pipe maintenance. There is no chance or short circuit during Plumbing maintenance. Plumbing and plumbing involves various components that should be examined, so there is a chance that one or the other component may break. These components can cause some temporary problems as well as long-term structural damage due to water seeping into walls and floors. To avoid such problems, it is important to fix plumbing problems as soon as they are discovered. The durability of the pipe system depends on the quality of its parts and the installation skills of the installers. No plumbing system, however well designed, can be expected to operate safely or hygienically unless the products or materials used are satisfactory. The opposite is also true if the best quality products or materials are used but incorrectly installed, the system will fail. Therefore, proper research and its operation will ensure optimal success and satisfactorily meet the expectations of Effect of Plumbing System in Construction. The efficiency and quality of plumbing depends on the expectations of the home owner, the condition of the pipe work performed and its plumbing activities.
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Moutsoglou, A., and Y. Han. "A study on dental vacuum system losses." Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 214, no. 2 (February 1, 2000): 203–12. http://dx.doi.org/10.1243/0954411001535363.

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An experimental study was conducted to document system head losses for dental vacuum systems. Experiments were performed to estimate pressure losses and pressure loss coefficients for pertinent dental treatment room hoses and fittings in high-volume evacuation systems. Pressure losses for some polyvinyl chloride (PVC) elbows used in dental plumbing systems were also measured and presented. Friction head losses in straight PVC piping are calculated and documented in graphical form. Calculated values for friction losses are found to correlate exceptionally well with measured experimental data.
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Leila Barzegar, Ghader Ghanizadeh, and Davoud Esmaeili. "Comparison of the efficiency of George fisher and metal pipes in water piping system." International Journal of Frontline Research in Science and Technology 1, no. 1 (July 30, 2022): 031–37. http://dx.doi.org/10.56355/ijfrst.2022.1.1.0003.

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Background and Aim: The health concern caused by the respiration of drinking water aerosols containing opportunistic pathogens such as Legionella pneumophila is increasing. This study aimed to investigate the effect of George Fisher's piping system on controlling Legionella pneumophila growth. Methods: A total of 32 samples with a volume of 1 liter per hot and cold water system of the gallery commercial-office complex and selective hospital were collected. Then, filtration, concentration, and heat treatment were performed and cultured on selected BCYE agar medium Results: The culture results showed that 5.8% of George Fisher samples and 37.5% of metal tubes were positive for Legionella pneumophila. Conclusion: Legionella pneumophila stopper pipes and fittings of George Fisher Company have a good ability to control the growth and density of Legionella pneumophila in the indoor water supply system and can be considered a suitable option for use in plumbing and indoor water supply.
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Lin, Zhen-Yu, Fan-Ru Lin, Juin-Fu Chai, and Kuo-Chun Chang. "Experimental studies of a typical sprinkler piping system in hospitals." Bulletin of the New Zealand Society for Earthquake Engineering 49, no. 1 (March 31, 2016): 1–12. http://dx.doi.org/10.5459/bnzsee.49.1.1-12.

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Based on the issue of life safety and immediate needs of emergency medical services provided by hospitals after strong earthquakes, this paper aims to introduce a research programme on assessment and improvement strategies for a typical configuration of sprinkler piping systems in hospitals. The study involved component tests and subsystem tests. Cyclic loading tests were conducted to investigate the inelastic behaviour of components including concrete anchorages, screwed fittings of small-bore pipes and couplings. Parts of a horizontal piping system of a seismic damaged sprinkler piping system were tested using shaking table tests. Furthermore, horizontal piping subsystems with seismic resistant devices such as braces, flexible pipes and couplings were also tested. The test results showed that the main cause of damage was the poor capacity of a screwed fitting of the small-bore tee branch. The optimum improvement strategy to achieve a higher nonstructural performance level for the horizontal piping subsystem is to strengthen the main pipe with braces and decrease moment demands on the tee branch by the use of flexible pipes. The hysteresis loops and failure modes of components were further discussed and will be used to conduct numerical analysis of sprinkler piping systems in future studies.
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Pawara, M. U., W. Setiawan, R. J. Ikhwani, Alamsyah, A. I. Wulandari, Suardi, A. M. Nugraha A, T. Hidayat, M. I. Ansori, and F. Mahmuddin. "Bilge System Design on 500 GT Ferry for Bulukumba–Selayar Route." IOP Conference Series: Earth and Environmental Science 921, no. 1 (November 1, 2021): 012010. http://dx.doi.org/10.1088/1755-1315/921/1/012010.

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Abstract A piping system is the main part of a system that connects the point where the fluid is stored to the point of accessing the pipe. Both pipe strength and pump capacity must be carefully considered because the safety of a ship will depend on the piping arrangement as well as on other ship equipment. The main function of the bilge pipe system is the drainage system in case of flooding in the compartment due to grounding or collision. Another function is the drainage system in the event of leaks on the welding root, condensation on the side shell leaks on the piping system (particularly in the engine room), and discharge water due to water-splash over the hatch. This study aimed to design a bilge piping system design using Autopipe Software with ASME B31.3 standard for the piping process. The design phase of the system is collecting data, then determining the load case. After that, selecting components needed for the construction of the system. The following step, making 3-dimensional modeling on Autopipe by entering input based on the determining components. Finally, validating the model, and proceed with the running model according to the specified load case. The result of the running model is the pipe stress level which is described in the stress code in the Autopipe. The final results are 3-dimensional drawings of the system and the number of components needed for constructing the system under Indonesian Classification Bureau (BKI) rules and ASME B31.3 standards for the piping process.
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Catron, Fred, and Allen Fagerlund. "Noise generation and propagation effects on piping system components." Noise Control Engineering Journal 57, no. 6 (2009): 570. http://dx.doi.org/10.3397/1.3155382.

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Bouneb, Zine El Abidine, and Djamel Eddine Saidouni. "Toward an IoT-Based Software-Defined Plumbing Network System With Fault Tolerance." International Journal of Hyperconnectivity and the Internet of Things 6, no. 1 (January 2022): 1–18. http://dx.doi.org/10.4018/ijhiot.285587.

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in this paper we will see the application of computer science algorithms to the plumbing system. We propose a fault tolerant tap water system which is impossible without Internet of things and algorithms . We will show that the problem is a mutual exclusion group problem and we propose an adapted algorithm version from the literature as a solution . Coupling algorithms with the configurable plumbing network we believe that this will open new field of research on IoT we called it software defined plumbing Network where components that have been traditionally implemented in hardware (e.g. water mixers, spring faucets ,flow sensors, etc.) are instead implemented by means of software . This way we can solve other problem like instantaneous hot water,automatic cleaning of the water heater..etc since due to computer algorithms the systems can be easily smart, extensible and adaptive.
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Chang, Seongkyu, Weipeng Sun, Sung Gook Cho, and Dookie Kim. "Vibration Control of Nuclear Power Plant Piping System Using Stockbridge Damper under Earthquakes." Science and Technology of Nuclear Installations 2016 (2016): 1–12. http://dx.doi.org/10.1155/2016/5014093.

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Generally the piping system of a nuclear power plant (NPP) has to be designed for normal loads such as dead weight, internal pressure, temperature, and accidental loads such as earthquake. In the proposed paper, effect of Stockbridge damper to mitigate the response of piping system of NPP subjected to earthquake is studied. Finite element analysis of piping system with and without Stockbridge damper using commercial software SAP2000 is performed. Vertical and horizontal components of earthquakes such as El Centro, California, and Northridge are used in the piping analysis. A sine sweep wave is also used to investigate the control effects on the piping system under wide frequency range. It is found that the proposed Stockbridge damper can reduce the seismic response of piping system subjected to earthquake loading.
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Gomez-Smith, C. Kimloi, David T. Tan, and Danmeng Shuai. "Research highlights: functions of the drinking water microbiome – from treatment to tap." Environmental Science: Water Research & Technology 2, no. 2 (2016): 245–49. http://dx.doi.org/10.1039/c6ew90007k.

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Dissertations / Theses on the topic "Piping (plumbing system components)"

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Hruška, Jan. "Zdravotně technické instalace pekárenských provozů." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227802.

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This diploma thesis deals with plumbing systems of baking plants v Modřicích. The first part looks for a solution exchange of heat and using waste energy from bakery owens. There are performed several possiblities of projects for plumbing systems. Project part was worked out in cooperation with technical company wich produces equipment for bakery factories. The solution according to relevant standards
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Books on the topic "Piping (plumbing system components)"

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Inc, Wendes Systems, and Knovel (Firm), eds. Mechanical estimating manual: Sheet metal, piping, and plumbing. Lilburn, GA: Fairmont Press, 2007.

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Plumbing engineering design handbook: Plumbing components and equipment : a plumbing engineers guide to system design and specifications. [Des Plaines, Ill.]: American Society of Plumbing Engineers, 2012.

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United States. Army. Corps of Engineers, ed. Thermal Evaluation Of Piping Components Used In A Commercial Underground Heat Distribution System... USACERL Technical Report 97/10... U.S. Department Of Defense... October 1996. [S.l: s.n., 1998.

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D'Amelio, Joseph. Mechanical Estimating Manual: Sheet Metal, Piping and Plumbing. River Publishers, 2021.

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D'Amelio, Joseph. Mechanical Estimating Manual: Sheet Metal, Piping and Plumbing. Fairmont Press, 2006.

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Mechanical Estimating Manual. Taylor & Francis Group, 2021.

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W, Streibich Matthew, United States. Army. Corps of Engineers., and Construction Engineering Research Laboratories (U.S.), eds. Thermal evaluation of piping components used in a commercial underground heat distribution system. Champaign, IL: U.S. Army Construction Engineering Research Laboratory, 1996.

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W, Streibich Matthew, and Construction Engineering Research Laboratories (U.S.), eds. Thermal evaluation of piping components used in a commercial underground heat distribution system. Champaign, IL: US Army Corps of Engineers, Construction Engineering Research Laboratories, 1996.

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Book chapters on the topic "Piping (plumbing system components)"

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Stewart, Maurice. "Piping system components." In Surface Production Operations, 193–300. Elsevier, 2016. http://dx.doi.org/10.1016/b978-1-85617-808-2.00004-3.

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"Steady-State Fluid Mechanics and Pipe System Components." In Fluid Mechanics, Water Hammer, Dynamic Stresses, and Piping Design, 5–118. ASME Press, 2013. http://dx.doi.org/10.1115/1.859964_ch2.

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"Evidence of corrosion in home piping system began to appear in fixture stains and metallic taste. In 1985, the Federal Government did surveys of heavy metals in water supplies, focusing on lead in drinking water and its effect on children. The prevalence of this metal resulted in the banning of lead from solder used in plumbing. In 1988, and in 1989, regulations reduced the safe limit of lead in water from 50^gm/L to 5 μgm/L, with an action level at 15pgm/L in a first draw sample. At the same time the E.P.A. provided guidance documents to schools and day care centers to help reduce children's lead exposure in water supplies. Grants were made available to states to be used for spreading the knowledge about this danger. However, the Federal regulations applied only to public water supplies, which were defined as systems serving 25 or more people. But private wells serving family homes, many containing children, were not included. Children could be assured of regulated water supplies in school, but not at home. Aware that lead was a problem in paint chips, Connecticut required that pediatricians test for traces of lead in children at age two. The Federal act recognized that the primary source of lead in water supplies came through home plumbing systems stemming from the corrosion by the water. This was remedied by requiring public water supplies to prevent corrosion, usually by adding alkalinity to the water. Here again, private wells not included in the educational phase of the program were also not included in the remedies. While these activities with water supplies were occurring, a phenomenon of a different sort was originating in states hundreds of miles away from Southeastern Connecticut. Throughout the Midwest and into West Virginia and Kentucky, electric power generators were erecting tall stacks to disperse sulfur dioxide gasses high into the atmosphere. The gas came mostly from the burning of high sulfur coal mined nearby. The Federal air pollution standards for ambient air were being met in the Midwest by the use of these tall stacks. In the eastern states, restrictions on sulfur content of fuels, mostly petroleum based, were used to meet the ambient air standards. By the early 1980's Connecticut eased its restrictions on sulfur content in these fuels from 0.5% to 1% by weight . Still, during the next five years the sulfur dioxide level actually decreased. However, in 1986, other data collected by the State showed that 32% of the rain storms had an acidic pH of 4.0 or below [ 1 ]. The lowest pH ’ s recorded that year were 3.6. The State also reported that from 1985 to 1996 there had been a further decrease in ambient sulfur dioxide levels [ 2 ]." In Hazardous and Industrial Waste Proceedings, 30th Mid-Atlantic Conference, 860. CRC Press, 2014. http://dx.doi.org/10.1201/9781498709453-139.

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Conference papers on the topic "Piping (plumbing system components)"

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Scavuzzo, Rudolph J., George D. Hill, and Peter Saxe. "The “Spectrum Dip”: Dynamic Interaction of System Components." In ASME 2007 Pressure Vessels and Piping Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/pvp2007-26757.

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In the early 1960s, many full sized surface combatants, submarines and structural models were tested with underwater explosive in order to evaluate the shock load to the ship and internal equipment and structures. Initially, shock spectra were calculated from base motion measurements of internal equipment and components. Attempts were made to envelop these spectra to develop shock design spectra inputs. At that time, earthquake engineers were using this enveloping method to develop design procedures from ground motion measurements to protect structures from earthquakes. However, for the measurements on ships, this procedure resulted in calculated loads that would have caused catastrophic failure of the equipment; yet the equipment had not failed on the ship tests. As a result, the data was reanalyzed over a period of over a year. It was concluded that the dynamic interaction of each component or structure reduced the measured spectral motion at the fixed-base frequencies of the structure by about an order of magnitude. In many cases, there was a dip in the shock spectra at the fixed-base frequencies: the “spectrum dip” phenomenon. This reanalysis led to shock spectra design curves for navy ships. This paper will present a review of an experimental study and an analytical model to explain the effect of dynamic interaction on the shock or response spectrum. In addition, a practical example of interaction of four single mass dynamic systems mounted on a realistic deck and subjected to a high impact shock input was studied by the authors.
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Aumuller, John J., and Vincent Carucci. "Premature Degradation and Failure of Steam-Methane Reformer Heater System Components." In ASME 2018 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/pvp2018-84006.

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Bulk hydrogen production in a petroleum refinery by steam–methane reforming utilizes high temperatures, moderate pressures and catalyst – filled tubes which generate high tube temperatures of up to 1,690 °F [920 °C] imposing relatively harsh performance demands on system components which are not usually encountered in other refinery or petrochemical plant equipment. Creep rupture and high temperature cycling place a severe service duty on the catalyst tubes, tube outlet pigtails, the subheader train and the downstream steam generator leading to ruptured pigtails, cracking in sub-headers and break up of the ceramic tube sheet ferrules at the steam generator inlet tubesheet. Although the industry has developed specific fit-for-purpose design practice standards augmented with detailed technical reports, reliability issues persist and regularly force premature shutdown of the reformer heater and downstream heat recovery equipment. Among these practices are API Standard 530 and API TR 942-A. API 530 assists designers in the selection of materials and determination of pressure design thickness of heater tubes while API TR 942-A attempts to reconcile the contradictory industry experience where some operators have little or no problems while others suffer premature degradation and cracking of outlet pigtails and manifold components. A reconciliation between application of industry design practices and equipment performance is presented in this paper to determine whether systemic issues contribute to the apparent situation; and, recommendations are made for pressure component design and material selection for steam-methane reformers.
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Dweib, Ahmed H. "Acoustic Fatigue Assessment of Piping System Components by Finite Element Analysis." In ASME 2011 Pressure Vessels and Piping Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/pvp2011-57371.

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High levels of acoustic energy can be produced at the downstream of pressure-reducing valves, pressure safety valves and control valves in piping systems. The presence of acoustic pressure waves and their coupling with the piping wall flexural modes of vibration can result in high levels of dynamic stresses, which cause acoustic fatigue failure at points of discontinuities on the pipe wall. This work presents a procedure for the assessment of the acoustic fatigue of different piping components by the application of finite element analysis. The piping system process data is used to generate the acoustic pressure and acoustic power spectrum at the downstream of the pressure-reducing valve. This acoustic power spectrum is taken to act at a finite element model of the piping system. Dynamic analysis, by use of power spectrum and harmonic analysis, is performed to obtain the response dynamic stresses, which are used for the fatigue evaluation of the piping component. The methodology presented can be applied during the engineering phase in the design and stress analysis of piping components in critical services subjected to acoustic fatigue as well as in the detailed evaluation of the different proposed acoustic fatigue design solutions.
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Shah, V. N., and Y. Y. Liu. "Generic Aging Management Programs for License Renewal of PWR Reactor Coolant System Components." In ASME 2002 Pressure Vessels and Piping Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/pvp2002-1371.

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The paper reviews the existing aging management programs (AMPs) for the reactor coolant system (RCS) components in pressurized water reactors (PWRs), including the reactor pressure vessel and internals, the reactor coolant system and connected lines, pressurizer, reactor coolant pumps, valves, and steam generators. These programs have been evaluated in the U.S. Nuclear Regulatory Commission (NRC) report Generic Aging Lessons Learned (GALL), NUREG-1801, for their use in the license renewal process. These AMPs include both generic and plant-specific programs. The generic AMPs are acceptable for managing aging effects during an extended period of operation and do not require further evaluation; the plant-specific AMPs require further evaluation. The use of the GALL report should facilitate both preparation of a license renewal application and timely and uniform review by the NRC staff.
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He, Lei, Kai Wen, Jing Gong, and Changchun Wu. "A Framework for Underground Gas Storage System Reliability Assessment Considering Functional Failure of Repairable Components." In ASME 2019 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/pvp2019-93066.

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Abstract As one of the most important means of nature gas peak shaving and energy strategic reserving, the reliability assessment of underground gas storage (UGS) system is necessary. Although many methods have been proposed for system reliability assessment, the functional heterogeneity of components and the influence of hydrothermal parameters on system reliability are neglected. To overcome these problems, we propose and apply a framework to assess UGS system reliability. Combining two-layer Monte Carlo simulation (MCS) technique with hydrothermal calculation, the framework integrates dynamic functional reliability of components into system reliability evaluation. To reflect the state transition process of repairable components and their impact on system reliability, the Markov model is introduced at system level. In order to improve the calculation speed, artificial neural network model based on off-line MCS is established to replace the on-line MCS at components level. The proposed framework is applied to the reliability assessment and operation optimization of an UGS under different operation conditions. Compared with the traditional single-layer MCS method, the proposed method can not only reflect the variation of UGS reliability with hydrothermal parameters and operation time, but also can improve evaluation efficiency significantly.
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Dewees, David J., Paul Hirschberg, Wolf Reinhardt, Gary L. Stevens, David H. Roarty, Steve Gosselin, Keith Wright, and Thomas M. Damiani. "ASME Section III Flaw Tolerance Sample Problem for Fatigue Design of Nuclear System Components." In ASME 2014 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/pvp2014-28788.

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An ASME Section III Task Group (TG) was formed in 2012 to develop alternate rules for the design assessment of Section III Class 1 nuclear components subject to fatigue service with environmental effects. Specifically, a flaw tolerance approach is being investigated based on similar methodology to that found in ASME Section XI Nonmandatory Appendix L. A key initial task of the TG (which reports to the Section III Working Group on Environmental Fatigue Evaluation Methods) was to develop and solve a detailed sample problem. The intent of the sample problem was to illustrate application of proposed rules, which will be documented as a Section III Code Case with a supporting technical basis document. Insights gained from round robin solution of the sample problem are presented and discussed in this paper. The objective of documenting the findings from the sample problem are to highlight the observed benefits and limitations of the proposed procedures, particularly how rules typically associated with in-service experience might be adapted into design methods. The sample problem is based on a heavy-walled stainless steel nozzle that meets cumulative fatigue usage requirements in air (i.e., usage factor, U, without reactor water environment effects less than unity), but fails to meet usage factor requirements when environmental fatigue effects are applied. The sample problem demonstrates that there is a class of problems dominated by severe thermal transients where fatigue initiation is predicted based on elastic methods including environmental effects, but fatigue crack propagation results are acceptable. Preliminary conclusions are drawn based on the results of the sample problem, and the next steps are also identified.
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Kim, J. M., K. W. Kim, K. S. Yoon, S. H. Park, I. Y. Kim, and Y. H. Kim. "Environmental Fatigue Evaluation for Primary Components of APR1400 Reactor Coolant System." In ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-25404.

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USNRC Regulatory Guide (RG) 1.207 provides a guideline for evaluating fatigue analyses due to the environmental effects on the new light water reactor (LWR). The environmental correction factor (Fen) is used to incorporate the LWR environmental effect into fatigue analyses of ASME Class 1 components. In this paper, the environmental fatigue evaluation is applied to some primary components with 60 year design life of Advanced Power Reactor (APR1400). The materials sampled from Class 1 components are the low alloy steel for the reactor vessel (RV) outlet nozzle and the carbon steel for the hot leg which are attached to the outlet nozzle. The simplified method, time-based integral method and strain-based integral method are used to compute the Fen values. The calculated fatigue usage factors including the environmental effects are compared with those obtained using the current ASME Code rules. As the calculated cumulative fatigue usage factor considering environmental effects (CUFen) is below 1.0, there is no concern for the RV outlet nozzle to implement design for environmental fatigue effects.
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Subudhi, M., R. Morante, and A. D. Lee. "Aging Management of Reactor Coolant System Mechanical Components in Pressurized Water Reactors for License Renewal." In ASME 2002 Pressure Vessels and Piping Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/pvp2002-1372.

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The reactor coolant system (RCS) mechanical components in pressurized water reactors (PWRs) that require an aging management review for license renewal include the primary loop piping and associated connections to other support systems, reactor vessel, reactor vessel internals, pressurizer, steam generators, reactor coolant pumps, and all other inter-connected piping, pipe fittings, valves, and bolting. All major RCS components are located inside the reactor building. Based on the evaluation findings of recently submitted license renewal applications for pressurized water reactors, this paper presents the plant programs and/or activities proposed by the applicants to manage the effects of aging. These programs and/or activities provide reasonable assurance that the intended function(s) of these mechanical components will be maintained for the period of extended operation. The license renewal application includes identification of RCS subcomponents that are within the scope of license renewal and are vulnerable to age-related degradation when exposed to environmental and operational conditions, determination of the effects of aging on their intended safety functions, and implementation of the aging management programs and/or activities including both current and new programs. Industry-wide operating experience, including generic communication by the NRC, is part of the aging management review for the RCS components. This paper presents a number of generic issues, including the time-limited aging analyses, associated with RCS components that require further review by the staff.
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Elliot, Barry J., Vikram N. Shah, and Yung Y. Liu. "Effective Approaches for Managing Aging Effects in BWR Reactor Coolant System Components for License Renewal." In ASME 2003 Pressure Vessels and Piping Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/pvp2003-2164.

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This paper discusses management of aging effects for reactor coolant pressure boundary components in boiling water reactors (BWRs): loss of fracture toughness due to thermal aging and neutron irradiation embrittlement of vessel internals made of cast austenitic stainless steel; cracking of the top guide due to irradiation-assisted stress corrosion cracking; cracking of the core shroud and reactor coolant system piping due to intergranular stress corrosion cracking; cracking of the small bore piping due to high-cycle thermal fatigue; and loss of preload in the pressure boundary bolting. The applicants for license renewal of BWR plants have proposed different approaches for managing these aging effects such that the intended functions of the affected components will be maintained, consistent with the current licensing basis, for the period of extended operation. The NRC staff has performed safety evaluation of these approaches and found them acceptable for adequately managing the aging effects during the period of extended operation. The technical bases for the acceptance are presented in this paper.
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Voll, Brian. "Mitigation of Piping System Vibration Using Dynamic Restraints." In ASME/NRC 2014 12th Valves, Pumps, and Inservice Testing Symposium. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/nrc2014-5017.

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Most power plant piping systems experience some level of vibration during operation. In some cases, the addition of restraints is required to keep operational vibration levels within acceptable limits. Vibration levels may need to be controlled to limit stresses in the piping or attached components, minimize wear on supports or other components, or prevent impacts with other piping or components. This paper discusses the use of dynamic restraints to effectively mitigate piping-system vibrations. Topics covered include: The effectiveness of using dynamic restraints for various sources of vibration; the effectiveness and applicability of various types of dynamic restraints; design considerations, including sizing and placement of dynamic restraints; and maintenance and testing considerations for dynamic restraints. Paper published with permission.
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Reports on the topic "Piping (plumbing system components)"

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Diaz, Aaron A., Anthony D. Cinson, Susan L. Crawford, and Michael T. Anderson. Technical Letter Report, An Evaluation of Ultrasonic Phased Array Testing for Reactor Piping System Components Containing Dissimilar Metal Welds, JCN N6398, Task 2A. Office of Scientific and Technical Information (OSTI), November 2009. http://dx.doi.org/10.2172/969173.

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Shippingport Station Decommissioning Project: Removal of piping and equipment and removal of primary system components. Office of Scientific and Technical Information (OSTI), October 1989. http://dx.doi.org/10.2172/5583112.

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