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Journal articles on the topic 'Piping design'

Author: Grafiati

Published: 28 June 2021

Last updated: 1 February 2022

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1

Zhang, Jing An, Zhuo Wei, Cheng Gang Li, and Chang Bao Sun. "Piping System Design of Subsea Manifold." Applied Mechanics and Materials 321-324 (June 2013): 1779–83. http://dx.doi.org/10.4028/www.scientific.net/amm.321-324.1779.

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Show the layout of subsea manifold piping system, whose design base on the relevant parameters of the E oil and gas field in West Africa. The piping system adapt to the sea situation. The maximum stress of the piping system is within the allowable range under wind load, the pressure and temperature stress of circulating medium and wave load, even in the splash zone, and passed the stress test.

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2

BROCK, J. E. "SOME FORMULAS FOR PIPING DESIGN." Journal of the American Society for Naval Engineers 73, no. 2 (March 18, 2009): 395–98. http://dx.doi.org/10.1111/j.1559-3584.1961.tb03314.x.

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3

Choi, Ho-Sung, Jung-Hwan Moon, and Jae-Ou Lee. "Fluid Behavior Modeling Optimal Design Using Network Piping Analysis Method." Fire Science and Engineering 35, no. 1 (February 28, 2021): 93–99. http://dx.doi.org/10.7731/kifse.6af732a2.

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The piping design should be considered by way of the network system in order to supply water for reliable fire extinguishing. However, the pipe scheduling method in line by the National Fire Safety Code is typically applied. When the modeling analysis method of fluid behavior is utilized based on the piping network theory, the fire-extinguishing water can be supplied more stably in a large-scale plant. Because a piping network consists of a large number of node points as well as consumes a lot of time and effort, it is recommended to use the commercial analysis program according to international standards. In this study, we used a piping network analysis program, sisHYD, which can model the actual piping according to the coordinates and analyze the fluid behavior inside the piping. As a result of the piping network analysis, it was possible to reduce the diameter of piping while ensuring the supply stability of firefighting water compared to the pipe scheduling method. Consequently, the value engineering effect of a construction project can be enhanced by reducing the wasted budget and inefficient factors.

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4

Qu, Bo. "Design of Piping Functionality for Multi-Process Micro-Kernel Embedded OS on ARM." Applied Mechanics and Materials 427-429 (September 2013): 937–40. http://dx.doi.org/10.4028/www.scientific.net/amm.427-429.937.

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This paper describes the design and implementation of piping functionality for multi-process micro-kernel embedded operating system on ARM, including overview of message passing and piping, pipe creation, pipe accessing via message passing, and pipe termination. The ways to implement piping for micro-kernel or mono-kernel are markedly different and this paper focuses on the piping implementation for multi-process micro-kernel. At the final, the paper provides a demo example to show the effect of piping. Based on the piping functionality described in this paper, more powerful shell interpreter with piping function can be designed.

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5

Harish Renukaradhya and Priyanka Amol Kodre. "Design aspects, consideration for modularization layout and piping design for optimization of modularization project." World Journal of Advanced Engineering Technology and Sciences 2, no. 1 (January 30, 2021): 011–16. http://dx.doi.org/10.30574/wjaets.2021.2.1.0036.

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In chemical, petrochemical and Oil and Gas industry, few decades back Modularization concept was executed for remote site location, extreme climatic conditions but now a days Modularization concept is becoming popular and extensively utilized irrespective to site location and climatic conditions because of its potential to reduce schedule, minimizing cost, effective utilization of skilled labor, for better quality with maximum safe environment, reduction in space requirements for plant layouts and reduction in installation cost. This paper will discuss Modularization design approaches, Consideration for Modularization layouts, consideration of piping design for optimization of modularization project. During modularization, size, weight and the center of Gravity (COG) of the module play’s important role for finalizing layouts and piping with in module, still constructability, Equipment sizing, equipment layout and piping design are critical factors in modularization. Successful execution of modularization highly depends on the modularization design approach hence the factor stated in paper will help EPC contractors for optimization of construction by eliminating later changes in design which will be further reduction in cost and schedule impact. In general construction schedule is largely impacted by piping installation and the cost is increased by rework, which reduces certainty on cost and schedule, the piping design and layout consideration stated in this paper will help construction to minimize on schedule and cost, by eliminating the rework done on the field.

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6

Milner, Christopher W., and Jack W. Davidson. "Quick piping." ACM SIGPLAN Notices 37, no. 7 (July 17, 2002): 175–84. http://dx.doi.org/10.1145/566225.513859.

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7

Chung, Chulsup. "A Study on Piping Support Design Process in Plant Piping System." Journal of the Korean Institute of Gas 18, no. 6 (December 31, 2014): 14–20. http://dx.doi.org/10.7842/kigas.2014.18.6.14.

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8

Inoue, Takehiko, Hirotaka Shirakami, Seiji Masuda, Takeshi Miida, Fusaichi Katayama, Younosuke Moriya, Yoshihiko Yamazaki, and Toshiaki Matsuo. "HICADEC-A, P : Arrangement design, piping design system." Journal of the Society of Naval Architects of Japan 1986, no. 160 (1986): 545–52. http://dx.doi.org/10.2534/jjasnaoe1968.1986.160_545.

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9

Qu, Bo. "Design of Piping Functionality for ARM Based Multi-Process Mono-Kernel Embedded OS." Applied Mechanics and Materials 373-375 (August 2013): 1634–37. http://dx.doi.org/10.4028/www.scientific.net/amm.373-375.1634.

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This paper describes the design and implementation of piping functionality for ARM based multi-process mono-kernel embedded operating system, including overview of inter-process communication, key techniques of designing piping routines such as getting i-node for piping, creating pipe, reading and writing pipe, and terminating pipe, etc. At the final, the paper provides a demo example to show the effect. Based on the piping routines described in this paper, more powerful shell interpreter with redirecting and piping functionalities as well as other shell commands analogous to that of embedded Linux can be implemented.

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10

Koves, William J. "Process Piping Design: A Century of Progress." Journal of Pressure Vessel Technology 122, no. 3 (April 3, 2000): 325–28. http://dx.doi.org/10.1115/1.556199.

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The Process Piping Code—ASME B31.3, (“Chemical Plant and Petroleum Refinery Piping,” 1998 Edition, ASME, New York, NY) has undergone significant changes over the years to better serve the industries that it supports (Koves, W. J., and Frikken, D. R., 1996, “ASME B31.3: Recent Changes and Future Developments,” Pressure Vessel and Piping Conference, ASME PVP-Vol. 338). The Code has changed in response to changing technology, inquiries to the committee, technical needs, clarification of requirements and editorial considerations. This paper discusses the history of its development and provides and overview of the most significant changes to the Code. [S0094-9930(00)01303-2]

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11

Suzuki, K., and A. Sone. "A Load Combination Method for Aseismic Design of Multiple Supported Piping Systems." Journal of Pressure Vessel Technology 111, no. 1 (February 1, 1989): 10–16. http://dx.doi.org/10.1115/1.3265633.

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A new load combination scheme for seismic response calculation of piping systems subjected to multiple support excitations is presented. This scheme has an advantage, such that the cross-correlation among support excitations are properly taken into account by use of a stationary random vibration approach. The authors also present the idea of generating a “multi-excitation floor response spectrum.” First, using a simple analytical SDOF piping system to two support excitations and a simple Z-shaped piping model for shaking test, the combination law is supplied to various correlation cases of two support excitations and the maximum responses of piping in a fundamental mode is calculated. Second, nonlinear characteristics such as gap and friction appearing between piping itself and supports are specifically investigated. The response effect due to these nonlinearities is evaluated by the results through the shaking test with a piping-support structural model, and the amount of response reduction effect is represented by “a response reduction factor β.”

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12

Cho, Hee-Cheol, In-Yeung Kim, Soon-Chul Yun, and Koo-Woun Park. "The OBE Elimination in Piping Design." Nuclear Engineering and Design 207, no. 1 (July 2001): 59–64. http://dx.doi.org/10.1016/s0029-5493(00)00426-x.

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13

Chiba, T., and R. Koyanagi. "Dynamic Response Studies of Piping-Support Systems." Journal of Pressure Vessel Technology 112, no. 1 (February 1, 1990): 39–45. http://dx.doi.org/10.1115/1.2928584.

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Considering the effect of the interaction between piping and support systems in the piping design is a more integrated approach to improve the reliability of piping systems. So, it is important to clarify the dynamic characteristics of the piping and the restraint structure during the seismic events. It may be desirable to investigate the effect of the gap on the response and the local stress of the piping systems. The dynamic characteristics of a simplified piping model with gaps was investigated by the tests and the analysis. Three-dimensional piping model test was performed to estimate the effect of the gap on the response of the piping system. It can be found that the local stress and the stiffness of the piping and the restraint structure under the seismic loadings should be considered in the seismic design. The gap size was not so effective on the response of the 3-dimensional piping system in the high-level response.

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14

Ryu, Yonghee, Shinyoung Kwag, and Bu‐Seog Ju. "Fragility Assessments of Multi-Story Piping Systems within a Seismically Isolated Low-Rise Building." Sustainability 10, no. 10 (October 19, 2018): 3775. http://dx.doi.org/10.3390/su10103775.

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A successful, advanced safety design method for building and piping structures is related to its functionality and sustainability in beyond-design-basis events such as extremely strong ground motions. This study develops analytical models of seismically isolated building-piping systems in which multi-story piping systems are installed in non-isolated and base-isolated, low-rise buildings. To achieve the sustainable design of a multi-story piping system subjected to strong ground motions, Triple Friction Pendulum (TFP) elements, specifically TFP bearings, were incorporated into the latter building structure. Then, a seismic fragility analysis was performed in consideration of the uncertainty of the seismic ground motions, and the piping fragilities for the seismically non-isolated and the base-isolated building models were quantified. Here, the failure probability of the piping system in the non-isolated building was greater than that in the seismically isolated building. The seismic isolation design of the building improved the sustainability and functionality of the piping system by significantly reducing the seismic energy of extreme ground motions which was input to the building structure itself.

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15

Chao, Y. J. "Minimum Stress Design of Nozzles in Pressure Vessel Heads." Journal of Pressure Vessel Technology 110, no. 4 (November 1, 1988): 460–63. http://dx.doi.org/10.1115/1.3265630.

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In the early design stage of pressure vessels the configuration of the piping systems is not yet established; hence forces transmitted by the piping systems to the nozzles in the pressure vessels cannot be determined. This often leads to the design of nozzles in pressure vessels guided by consideration of pressure loadings such as the area-replacement method. However, it is true that in many cases the stresses due to external loads can be more critical than those due to the internal pressure. Therefore, engineers often redesign the piping system several times by adding more pipe bends or special restraints for a hot piping system to reduce the reactions at a previously designed nozzle so that the resulting stresses at the nozzle are within the acceptable limit. This paper introduces a rational mechanism whereby the stresses due to the unforeseen external loads can be minimized in the early design stage of the nozzle. An appropriate analysis is discussed which is based on the classical thin shell theory. Analyses using this method allow one to obtain the minimum stresses at a nozzle in a pressure vessel head or a spherical vessel for moment and thrust loadings.

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16

Goodling, E. C. "Control of Pipeline Dynamics With Disk Spring Restraints (Design Paper)." Journal of Pressure Vessel Technology 113, no. 2 (May 1, 1991): 332–36. http://dx.doi.org/10.1115/1.2928763.

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Dynamic transients such as steam hammer or water hammer in power plant or process piping can generate high destructive reactions if rigid restraints or snubbers are used in an attempt to exert total control of pipe response. However, where some movement can be tolerated, adequate control can be maintained with much lower resulting loads in the restraining structures and components. The disk spring restraint has been demonstrated to be a practical device for controlling piping movements caused by typical dynamic upset conditions in steam and boiler feedwater piping and in drain lines carrying mixed phase (water and vapor) flow. This paper discusses the simplified mathematics used in estimating loads to design disk spring restraints for such applications.

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17

Danehy, Timothy P., Tiff Hilton, George R. Watzlaf, Fred Johnson, Shaun L. Busler, Clifford F. Denholm, and Margaret H. Dunn. "VERTICAL FLOW POND PIPING SYSTEM DESIGN CONSIDERTATIONS." Journal American Society of Mining and Reclamation 2002, no. 1 (June 30, 2002): 916–36. http://dx.doi.org/10.21000/jasmr02010916.

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18

郜, 胜. "Experience and Thinking in Process Piping Design." Hans Journal of Chemical Engineering and Technology 09, no. 05 (2019): 385–93. http://dx.doi.org/10.12677/hjcet.2019.95055.

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19

Kobayashi, T., and M. Tateishi. "Hot Clamp Design for LMFBR Piping Systems." Journal of Pressure Vessel Technology 115, no. 1 (February 1, 1993): 47–52. http://dx.doi.org/10.1115/1.2929494.

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Thin-wall, large-diameter piping for liquid metal fast breeder reactor (LMFBR) plants can be subjected to significant thermal transients during reactor scrams. To reduce local thermal stresses, an insulated “cold” clamp was designed for the fast flux test facility and was also applied to some prototype reactors thereafter. However, the cost minimization of LMFBR requires much simpler designs. This paper presents a “hot” clamp design concept, which uses standard clamp halves directly attached to the pipe surface leaving an initial gap. Combinations of flexible pipe and rigid clamp achieved a self-control effect on clamp-induced pipe stresses due to the initial gap. A 3-D contact and inelastic history analysis were performed to verify the hot clamp concept. Considerations to reduce the initial stress at installation, to mitigate the clamp restraint on the pipe expansion during thermal shocks, and to maintain the pipe-clamp stiffness desired during a seismic event were discussed.

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20

Makhutov, N. A., S. V. Serikov, and A. G. Kotousov. "Increasing the design strength of piping fittings." Strength of Materials 23, no. 4 (April 1991): 468–72. http://dx.doi.org/10.1007/bf00771978.

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21

Mo, Y. L. "A small bore piping design expert system." Nuclear Engineering and Design 147, no. 3 (April 1994): 447–54. http://dx.doi.org/10.1016/0029-5493(94)90227-5.

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22

Hwang, Se-Yun, Min-Seok Kim, and Jang-Hyun Lee. "Thermal Stress Analysis of Process Piping System Installed on LNG Vessel Subject to Hull Design Loads." Journal of Marine Science and Engineering 8, no. 11 (November 16, 2020): 926. http://dx.doi.org/10.3390/jmse8110926.

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In this paper, the procedure for the strength evaluation of the piping system installed on liquefied natural gas (LNG) carriers is discussed. A procedure that accounts for the ship’s wave load and hull motion acceleration (as well as the deformation due to the thermal expansion and contraction experienced by the hull during seafaring operations) is presented. The load due to the temperature and self-weight of the piping installed on the deck is also considered. Various operating and load conditions of the LNG piping system are analyzed. Stress analysis is performed by combining various conditions of sustained, occasional, and expansion loads. Stress is assessed using finite element analysis based on beam elements that represent the behavior of the piping. The attributes of the piping system components (such as valves, expansion joints, and supports) are represented in the finite element model while CAESAR-II, a commercial software is used for finite element analysis. Component modeling, load assignment, and load combinations are presented to evaluate pipe stresses under various load conditions. An evaluation model is selected for the piping arrangement of LNG and the evaluated stress is compared with the allowable stress defined by the American Society of Mechanical Engineers (ASME).

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23

Ratiu, M. D., and N. T. Mosidis. "Qualification of Diesel Generator Exhaust Carbon Steel Piping to Intermittent Elevated Temperatures." Journal of Pressure Vessel Technology 118, no. 1 (February 1, 1996): 42–47. http://dx.doi.org/10.1115/1.2842161.

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The diesel generator exhaust piping, usually made up of carbon steel piping (e.g., ASME SA-106, SA-53), is subjected to successive short time exposures at elevated temperatures up to 1000° F (538°C). A typical design of this piping, without consideration for creep-fatigue cumulative damage, is at least incomplete, if not inappropriate. Also, a design for creep-fatigue, usually employed for long-term exposure to elevated temperatures, would be too conservative and will impose replacement of the carbon steel piping with heat-resistant CrMo alloy piping. The existing ASME standard procedures do not explicitly provide acceptance criteria for the design qualification to withstand these intermittent exposures to elevated temperatures. The serviceability qualification proposed is based on the evaluation of equivalent full temperature cycles which are presumed/expected to be experienced by the exhaust piping during the design operating life of the diesel engine. The proposed serviceability analysis consists of: (a) determination of the permissible stress at elevated temperatures, and (b) estimation of creep-fatigue damage for the total expected cycles of elevated temperature exposures following the procedure provided in ASME Code Cases N-253-6 and N-47-28.

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Ratiu, M. D., and N. T. Moisidis. "A Serviceability Approach for Carbon Steel Piping to Intermittent High Temperatures." Journal of Pressure Vessel Technology 118, no. 4 (November 1, 1996): 496–501. http://dx.doi.org/10.1115/1.2842220.

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Carbon steel piping (e.g., ASME SA-106, SA-53), is installed in many industrial applications (i.e., diesel generator exhaust manifold) where the internal gas flow subjects the piping to successive short time exposures at elevated temperatures up to 1100°F. A typical design of this piping without consideration for creep-fatigue cumulative damage is at least incomplete if not inappropriate. Also, a design for creep-fatigue, usually employed for long-term exposure to elevated temperatures, would be too conservative and will impose replacement of the carbon steel piping with heat-resistant CrMo steel piping. The existing ASME Standard procedures do not explicitly provide acceptance criteria for the design qualification to withstand these intermittent exposures to elevated temperatures. The serviceability qualification proposed is based on the evaluation of equivalent full temperature cycles which are presumed/expected to be experienced by the exhaust piping during the design operating life of the diesel engine. The proposed serviceability analysis consists of: (a) determination of the permissible stress at elevated temperatures, and (b) estimation of creep-fatigue damage for the total expected cycles of elevated temperature exposures following the procedure provided in ASME Code Cases N-253-6 and N-47-28.

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25

Nordham, D. J., and L. M. Kaldor. "Design Procedure for Stress Intensification Factors of 90-Deg Curved Pipe Having Various Tangent Lengths (Design Paper)." Journal of Pressure Vessel Technology 115, no. 3 (August 1, 1993): 313–18. http://dx.doi.org/10.1115/1.2929533.

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A simple design procedure, based on 114 finite element analyses, was derived to predict the stress intensification factor for 90-deg curved pipe with end constraints composed of tangents of any length terminated by rigid flanges and no internal pressure loads. The results of this design procedure were then compared to stress intensification factors obtained from additional finite element analyses and experimental work. Stress intensification factors calculated using the design equations in the Power Piping Code (ANSI/ASME B31.1-1986) were also compared to all the finite element and experimental work. It was found that this design procedure more accurately predicts the stress intensification factors than the Power Piping Code.

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26

Chiba, T., and H. Kobayashi. "Response Characteristics of Piping System Supported by Visco-Elastic and Elasto-Plastic Dampers." Journal of Pressure Vessel Technology 112, no. 1 (February 1, 1990): 34–38. http://dx.doi.org/10.1115/1.2928583.

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Improving the reliability of the piping systems can be achieved by eliminating the mechanical snubber and by reducing the response of the piping. In the seismic design of piping system, damping is one of the important parameters to reduce the seismic response. It is reported that the energy dissipation at piping supports contributes to increasing the damping ratio of piping system. Visco-elastic damper (VED) and elasto-plastic damper (EPD) were developed as more reliable, high-damping piping supports. The dynamic characteristics of these dampers were studied by the component test and the full-scale piping model test. Damping effect of VED is independent of the piping response and VED can be modeled as a complex spring in the dynamic analysis. On the other hand, damping ratio of piping system supported by EPD increases with the piping response level. So, these dampers are helpful to increase the damping ratio and to reduce the dynamic response of piping system.

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27

Nordham, D. J., and L. M. Kaldor. "Design Procedure for Flexibility Factors of 90-Deg Curved Pipe Having Various Tangent Lengths (Design Paper)." Journal of Pressure Vessel Technology 115, no. 3 (August 1, 1993): 319–24. http://dx.doi.org/10.1115/1.2929534.

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A simple design procedure, based on 175 finite element analyses, was derived to predict the flexibility factor due to an in-plane or out-of-plane moment for a 90-deg curved pipe with end constraints composed of tangents of any length terminated by rigid flanges and no internal pressure loads. The results of this design procedure were then compared to flexibility factors obtained from additional finite element analyses and experimental work. Flexibility factors calculated using the design equations in the Power Piping Code (ANSI/ASME B31.1-1986) were also compared to all finite element and experimental work. It was found that this design procedure more accurately predicts the flexibility factors than the Power Piping Code.

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28

Schott, G. A., G. M. Hulbert, and C. F. Heberling. "Results From Dynamic Tests and Analyses of a Medium Diameter LMFBR Piping System." Journal of Pressure Vessel Technology 108, no. 3 (August 1, 1986): 330–33. http://dx.doi.org/10.1115/1.3264793.

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This paper presents results and observations from dynamic tests and analyses performed on an 8-in. (0.20-m) diameter, thin-walled piping system. The piping system is a scaled representation of a Liquid Metal Fast Breeder Reactor (LMFBR) large diameter piping loop. Prototypic piping restraints were employed, including mechanical snubbers, rigid struts, pipe hangers and nonintegral pipe clamps. Snap-back, sine-sweep and seismic tests were performed for various restraint configurations and piping conditions. The test results are compared to analytical predictions for verification of the methods and models used in the seismic design of LMFBR piping systems. Test program conclusions and general recommendations for piping seismic analyses are presented along with a discussion of test and analysis results.

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29

Zahid, Umer, Sohaib Z. Khan, Muhammad A. Khan, Hassan J. Bukhari, Imran Ahmed, and Kamran A. Khan. "A methodology for flexibility analysis of process piping." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 232, no. 6 (November 2, 2017): 751–61. http://dx.doi.org/10.1177/0954408917738963.

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Design of piping system requires a systematic consideration of various factors as addressed by the codes and standards. This research paper aims to provide a method for flexibility analysis of a selected area of process piping at an industrial plant. Analysis is done for the purpose of accommodating a spare heat exchanger in the process layout. The analysis follows a systematic procedure, with preparation of a tentative model of the system on CAESAR II software followed by insertion of different pipe supports. The selection and location of these supports is based on the results obtained from displacement, stress, reaction and equipment nozzle analysis of the piping system. The design is in accordance with ASME B31.3, which is the standard code for process piping. The proposed method can be adapted for piping configuration of any industrial plant. With the provision of a systematic procedure, the method ensures time saving and efficient flexibility analysis of any piping system.

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30

Li, Yong Dong, Sheng Liang Han, Jie Liu, Ji Yong Liu, and He Du. "Vibration Analysis and Control for Reciprocating Compressor Piping System." Applied Mechanics and Materials 157-158 (February 2012): 930–34. http://dx.doi.org/10.4028/www.scientific.net/amm.157-158.930.

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Following the adequate model of the reciprocating compressor piping system and the compressor design parameters, operating conditions and gas parameters, the mechanical system of compressor piping, gas-column system, pressure pulsations and of vibration response are numerically simulated. And the main factor bringing to the compressor piping system vibration is identified. A reasonable way to controlling piping vibration is developed to achieve a better efficiency. Keywords: Compressor; Pipe vibration; Vibration Analysis; numerical simulation.

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31

Nesbitt, Brian. "Why is pump piping so difficult to design?" World Pumps 2000, no. 409 (October 2000): 24–29. http://dx.doi.org/10.1016/s0262-1762(00)90227-x.

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32

Chablat, Damien, Swaminath Venkateswaran, and Frédéric Boyer. "Mechanical Design Optimization of a Piping Inspection Robot." Procedia CIRP 70 (2018): 307–12. http://dx.doi.org/10.1016/j.procir.2018.02.015.

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33

ASAIDA, Yasuhiro, and Tsutomu SHIMIZU. "1011 Development of Vibration Analysis for Piping Design." Proceedings of Conference of Kansai Branch 2001.76 (2001): _10–21_—_10–22_. http://dx.doi.org/10.1299/jsmekansai.2001.76._10-21_.

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34

Hodge, B. K. "Analysis and design program for series piping systems." Fire Technology 21, no. 4 (November 1985): 310–19. http://dx.doi.org/10.1007/bf01103586.

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35

Drobenko, B. D. "Optimum design of high-pressure piping T-joints." Soviet Materials Science 20, no. 6 (1985): 591–92. http://dx.doi.org/10.1007/bf00723563.

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36

Guzy, Dan. "Piping design criteria and research current NRC activities in dynamic design." Nuclear Engineering and Design 107, no. 1-2 (April 1988): 161–67. http://dx.doi.org/10.1016/0029-5493(88)90319-6.

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37

Hatfield, F. J., and D. C. Wiggert. "Seismic Pressure Surges in Liquid-Filled Pipelines." Journal of Pressure Vessel Technology 112, no. 3 (August 1, 1990): 279–83. http://dx.doi.org/10.1115/1.2928626.

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Observed damage and analytic studies indicate that earthquakes may cause destructive pressure surges in liquid-filled piping. Most studies have concerned buried piping that could be assumed to move with the ground. However, pressure surges also would be expected in above-ground piping, where they would affect the displacement response and, hence, the amplitude of flexural stress in the piping. Current aseismic design practice is to simplify this effect by treating the contained liquid as incompressible mass. This paper describes a technique for computing pressure and relative displacement that incorporates elasticity of both the piping and the liquid. Seismic responses of an example pipeline are predicted. It was found that assuming the piping to be rigid produced an upper-bound estimate of pressure, but assuming the liquid to be incompressible resulted in underestimating displacement of the piping.

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38

Subotin, Viktor H., Oleksandr S. Burakov, Viktor M. Iefymenko, Andrii Yu Starchenko, Yurii M. Kovalov, and Vadym L. Rassovskyi. "Creation of Optimal Design of Runner Oil System of Kaplan Hydro-Turbines." Journal of Mechanical Engineering 24, no. 3 (September 30, 2021): 21–26. http://dx.doi.org/10.15407/pmach2021.03.021.

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The main objectives of the reconstruction are stated. Those are: increase of the service life of the hydro-turbines of Dnipro Cascade, enhancement of their efficiency, power, and environmental safety, extension of the power control range of the hydro-power plants, assurance of the reliability and improvement of the operating safety of their equipment and structures, meeting the environmental requirements, improvement of the quality of the generated electric power after control system rehabilitation. The article deals with and analyses the chronology of the creation of the optimal design for a vertical Kaplan hydro-unit oil piping taking into consideration the half a century operational experience and stages of hydro-turbine modernization for Dnipro-2 HPP. The experience in improvement of the hydro-unit and oil head system control design is generalized, from the unified solution to the creation of the all-new design. The methods of the oil system rod machining and preliminary control are amended. The temperature control of the automatic unit shutdown in case of heating of oil head bushes is introduced into the control system. The oil piping installation method is improved and step-by-step checking of the oil piping installation centering is introduced. As a result of implementation of a package of design and process engineering solutions, the optimal design of the oil piping of improved reliability was created. It decreased the unscheduled downtime of the units and cut expenses on their maintenance providing the cyclic recurrence recommended by the standards for the operation of the oil pressure device pumps and thus, decreased the electric power consumption for balance-of-plant needs. The objects of the implementation of the developed oil piping design are given.

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Yang, Xiang Yang. "Research on Design and Construction Issues of Oxygen Pipeline in Chemical Plant." Applied Mechanics and Materials 716-717 (December 2014): 809–12. http://dx.doi.org/10.4028/www.scientific.net/amm.716-717.809.

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When the high-pressure chemical oxygen delivery device, the slightest mistake, likely to cause explosion, so the design oxygen pipeline, it is usually as a special danger medium piping design. This paper explores the design of the petrochemical industry in oxygen pipes, installation and construction unit issues and process piping installation and construction issues, systematic analysis of the piping in the design and construction should pay attention to the problems and solutions to ensure each petrochemical industry aspects of safe operation. Standard requirements and corresponding measures in aspects of oxygen pipeline flow rate control, material selection, pipe and valve selection and pipeline construction, which should be followed to ensure the safety of oxygen pipeline, which are described in details, according to the national standard/safety technical regulation for oxygen and relative gases produced with cryogenic method. Finally, the experience of safe use of oxygen pipelines is presented.

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Belytschko, T., M. Karabin, and J. I. Lin. "Fluid-Structure Interaction in Waterhammer Response of Flexible Piping." Journal of Pressure Vessel Technology 108, no. 3 (August 1, 1986): 249–55. http://dx.doi.org/10.1115/1.3264783.

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In the waterhammer analysis of piping systems, incompressible (or added mass) representations are generally used in computing the response of the piping. It is shown that this procedure is not necessarily conservative, particularly for thin-walled, flexible piping systems, and that fully coupled fluid-structure solutions can predict higher loads and stresses. A modal recovery procedure which easily permits the representation on the acoustic effects of the fluid to be included in a structural model is also presented. Results are given for both simple models and a piping system from an LMFBR design.

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Pérez, Daniel Molina, Lemuel C. Ramos-Arzola, and Amadelis Quesada Torres. "Pressure-Dependent Models in Ship Piping Systems." Journal of Marine Science and Application 19, no. 2 (June 2020): 266–74. http://dx.doi.org/10.1007/s11804-020-00146-2.

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Abstract This paper aims to evaluate the feasibility of pressure-dependent models in the design of ship piping systems. For this purpose, a complex ship piping system is designed to operate in firefighting and bilge services through jet pumps. The system is solved as pressure-dependent model by the piping system analysis software EPANET and by a mathematical approach involving a piping network model. This results in a functional system that guarantees the recommendable ranges of hydraulic state variables (flow and pressure) and compliance with the rules of ship classification societies. Through this research, the suitability and viability of pressure-dependent models in the simulation of a ship piping system are proven.

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Chiba, T., S. Okado, I. Fujii, K. Itami, and F. Hara. "Optimum Support Arrangement of Piping Systems Using Genetic Algorithm." Journal of Pressure Vessel Technology 118, no. 4 (November 1, 1996): 507–12. http://dx.doi.org/10.1115/1.2842222.

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The support arrangement is one of the important factors in the design of piping systems. Much time is required to decide the arrangement of the supports. We applied a genetic algorithm to find the optimum support arrangement for piping systems. Examples are provided to illustrate the effectiveness of the genetic algorithm. Good results are obtained when applying the genetic algorithm to the actual designing of the piping system.

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Kwag, Shinyoung, Jinsung Kwak, Hwanho Lee, Jinho Oh, and Gyeong-Hoi Koo. "Enhancement in the Seismic Performance of a Nuclear Piping System using Multiple Tuned Mass Dampers." Energies 12, no. 11 (May 30, 2019): 2077. http://dx.doi.org/10.3390/en12112077.

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In a nuclear power plant, it is essential to improve the seismic safety of the piping system for the coolant transfer to cool the high temperature caused by the nuclear reaction. Under this background, this study makes two major contributions. The first is that though tuned mass dampers (TMDs) were originally used only to reduce the vibration of piping itself, through this research, it was first proved that it had a positive effect on the improvement of the seismic performance of nuclear piping systems. Additionally, this study proposed a design approach that effectively obtains the optimal design values of TMDs associated with seismic performance. In order to effectively derive the TMD optimum design values, we not only utilized the existing TMD optimum design formula, but also additionally proposed a frequency response analysis-based TMD optimal design method. As a result, it was seen that primary responses of system were significantly reduced under the input seismic load due to the use of TMDs for the piping system. It was also confirmed that the use of the existing TMD formula brought about a similar degree of response reduction effect, while it was possible to get the improved effect when using the proposed method.

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Chiba, T., R. Koyanagi, N. Ogawa, and C. Minowa. "A Test and Analysis of the Multiple Support Piping Systems." Journal of Pressure Vessel Technology 111, no. 3 (August 1, 1989): 291–99. http://dx.doi.org/10.1115/1.3265677.

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One of the current topics in the seismic design of piping systems is the overall reliability of them in earthquake events. Actual piping systems are generally supported by independent structures such as vessels and steel structures. So, it is very important to clarify the behavior of actual piping systems during the seismic events. For this purpose, the analytical method of multiple excitation problems is a preferable approach to not only evaluate the actual behavior of the piping systems, but also improve the reliability of piping systems. To clarify the dynamic characteristics of the piping systems and to assess the computational methods in the linear system subjected to multiple support excitations, an experimental study using a realistic large-scale piping model has been conducted. The equations for the multiple excitation problem have been validated and the adequacy of the multiple response spectra method has been confirmed by the comparison of the test results with the analytical one. This paper reports the results focusing on the analytical methods of the multiple support piping system. It is noted that the multiple response spectrum method is efficient for the multiple excitation problems.

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INOUE, Reiko, Kaoru CHIDA, and Jun OTA. "Piping Design Knowledge Extraction and Analysis of Differences Due to Design Experience." Journal of the Japan Society for Precision Engineering 86, no. 5 (May 5, 2020): 375–79. http://dx.doi.org/10.2493/jjspe.86.375.

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Lee, Dong-Won, Ji-Young Jeong, Yong-Bum Lee, and Hyeong-Yeon Lee. "Design evaluation on sodium piping system and comparison of the design codes." Journal of Mechanical Science and Technology 29, no. 3 (March 2015): 1019–27. http://dx.doi.org/10.1007/s12206-015-0216-9.

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Wu, J. K. "A Method for Machine Arrangement Design Evaluation and Pipe Construction Material Estimation." Journal of Ship Production 16, no. 03 (August 1, 2000): 173–81. http://dx.doi.org/10.5957/jsp.2000.16.3.173.

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This paper describes a method to estimate the pipe construction materials based on the Orthogonal Routing Method and three classes of design information, including equipment arrangement drawings, piping system diagrams, and equipment catalogs. However, this method does not need detail pipe routing design information. The pipe construction material estimating method has been tested by using the design information of the lubricating oil piping system of the main engine of an 8000-ton oil tanker. The result is very encouraging, only 10% underestimation. Such a material estimating method is a useful engineering tool from the Design for Manufacturing and Concurrent Engineering points of view.

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O’Brien, Colleen, Noel Lobo, and Carlton Ramcharran. "These Pipes Have Passed." Mechanical Engineering 137, no. 06 (June 1, 2015): 86–87. http://dx.doi.org/10.1115/1.2015-jun-8.

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This article discusses need for introducing new standards for developing efficient piping systems. A barrier to wider adoption of the material has been the absence of non-metallic piping standards that could serve as a common language for manufacturers, fabricators, designers, and other stakeholders. The development of the new standards also reflects the growing international role of ASME standards. The intent of ASME NM-1 is to set engineering requirements for safe design and construction of thermoplastic piping installations. The ASMI NM-2 is expected to address pipe and piping components which are produced as standard products, as well as custom products designed for specific applications. The ASME NM-3 Standard intends to provide greater uniformity, consistency, and transparency for the identification and establishment of physical properties and allowable stress values for materials in non-metallic piping systems. The standards for thermoplastic and fiberglass reinforced plastic piping systems are being developed to fill the unmet need for comprehensive documents in these areas.

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Sung, Sun-Kyung, and Sang-Ho Suh. "Optimal Piping Network Design of Pneumatic Waste Collection System." Journal of Fluid Machinery 13, no. 3 (June 1, 2010): 54–58. http://dx.doi.org/10.5293/kfma.2010.13.3.054.

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Kim, Eung-Soo, and Myong-O. Yoon. "Design Consideration about Large Caliber Piping of Polyethylene Material." Journal of Korean Institute of Fire Science and Engineering 27, no. 6 (December 31, 2013): 44–49. http://dx.doi.org/10.7731/kifse.2013.27.6.044.

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