Hydraulic Surge Control in Pump Stations with Traveling Water Screens

2004 ◽  
Author(s):  
Yifan Zheng
Keyword(s):  
Surge Control ◽  
Pump Stations

Challenges for Design and Constructability of Tunnel Dewatering Pump Stations

2017 ◽  
Vol 2017 (9) ◽  
pp. 3233-3240
Author(s):  
Grant Davies ◽  
Ken Watson ◽  
Bohdan Bodniewicz ◽  
Diala Dandach ◽  
Salil Kharkar ◽  
...  
Keyword(s):  
Pump Stations

Long-Distance, High-Volume Transport of Coal by Slurry Pipeline

1981 ◽  
Vol 103 (4) ◽  
pp. 322-329 ◽  
Author(s):  
T. E. Stripling ◽  
R. G. Holter
Keyword(s):  
System Design ◽  
High Volume ◽  
The United States ◽  
Volume Transport ◽  
Transportation Systems ◽  
Integrated System ◽  
Coal Slurry ◽  
Long Distance ◽  
Pump Stations ◽  
Integrated System Design

Several long-distance, high-volume coal slurry transportation systems are planned or proposed for the United States. These new systems offer a method of transport that is both economical and environmentally attractive. The design of these systems will be a challenge to the pipeline engineer since an integrated, system design of several components is necessary to achieve an optimum overall effect. The pipeline, pump stations, instrumentation and controls, slurry preparation, and utilization facilities must all be considered in the design. The purpose of this paper is to describe the system components of a large coal slurry transportation system in detail and to show the special design considerations required for the overall system design considering the interrelationships of the various components.

Optimization of Operation Parameters for Direct Spring Loaded Pressure Relief Valve in a Pipeline System

2018 ◽  
Vol 140 (5) ◽  
Author(s):  
Hyunjun Kim ◽  
Sanghyun Kim ◽  
Youngman Kim ◽  
Jonghwan Kim
Keyword(s):  
Pressure Relief Valve ◽  
Pipeline System ◽  
Relief Valve ◽  
Pressure Relief ◽  
Computational Costs ◽  
Constant Degree ◽  
System A ◽  
Disk Mass ◽  
Analysis Scheme ◽  
Surge Control

A direct spring loaded pressure relief valve (DSLPRV) is an efficient hydraulic structure used to control a potential water hammer in pipeline systems. The optimization of a DSLPRV was explored to consider the instability issue of a valve disk and the surge control for a pipeline system. A surge analysis scheme, named the method of characteristics, was implemented into a multiple-objective genetic algorithm to determine the adjustable factors in the operation of the DSLPRV. The forward transient analysis and multi-objective optimization of adjustable factors, such as the spring constant, degree of precompression, and disk mass, showed substantial relaxation in the surge pressure and oscillation of valve disk in a hypothetical pipeline system. The results of the regression analysis of surge were compared with the optimization results to demonstrate the potential of the developed method to substantially reduce computational costs.

Pressure Cycling Monitoring Helps Ensure the Integrity of Energy Pipelines

2010 ◽  
Author(s):  
Peter Song ◽  
Doug Lawrence ◽  
Sean Keane ◽  
Scott Ironside ◽  
Aaron Sutton
Keyword(s):  
Fatigue Life ◽  
Pipeline System ◽  
Outer Diameter ◽  
Operating Pressure ◽  
Potential Growth ◽  
Integrity Assessment ◽  
Pressure Cycling ◽  
Pressure Cycle ◽  
Primary Focus ◽  
Pump Stations

Liquids pipelines undergo pressure cycling as part of normal operations. The source of these fluctuations can be complex, but can include line start-stop during normal pipeline operations, batch pigs by-passing pump stations, product injection or delivery, and unexpected line shut-down events. One of the factors that govern potential growth of flaws by pressure cycle induced fatigue is operational pressure cycles. The severity of these pressure cycles can affect both the need and timing for an integrity assessment. A Pressure Cycling Monitoring (PCM) program was initiated at Enbridge Pipelines Inc. (Enbridge) to monitor the Pressure Cycling Severity (PCS) change with time during line operations. The PCM program has many purposes, but primary focus is to ensure the continued validity of the integrity assessment interval and for early identification of notable changes in operations resulting in fatigue damage. In conducting the PCM program, an estimated fatigue life based on one month or one quarter period of operations is plotted on the PCM graph. The estimated fatigue life is obtained by conducting fatigue analysis using Paris Law equation, a flaw with dimensions proportional to the pipe wall thickness and the outer diameter, and the operating pressure data queried from Enbridge SCADA system. This standardized estimated fatigue life calculation is a measure of the PCS. Trends in PCS overtime can potentially indicate the crack threat susceptibility the integrity assessment interval should be updated. Two examples observed on pipeline segments within Enbridge pipeline system are provided that show the PCS change over time. Conclusions are drawn for the PCM program thereafter.

Female Labour Dominance in Petrol Pump Stations in the South-Eastern States of Nigeria

2021 ◽  
Vol 16 (2) ◽  
pp. 207-221
Author(s):  
Edwin Izueke ◽  
Chukwudike Udenze ◽  
Chukwuka E. Ugwu ◽  
Okechukwu Marcellus Ikeanyibe
Keyword(s):  
The South ◽  
Female Labour ◽  
South Eastern ◽  
Pump Stations ◽  
Petrol Pump

Risk Assessment for Small Diameter Piping for Liquid Pipeline Facilities

2018 ◽  
Author(s):  
C. M. Refaul Ferdous ◽  
Amanda Kulhawy ◽  
Jessica Farrell ◽  
Chris Beaudin ◽  
Anthony Payoe ◽  
...  
Keyword(s):  
Risk Measure ◽  
Small Diameter ◽  
Pipeline System ◽  
System Description ◽  
Maintenance Program ◽  
Inspection And Maintenance ◽  
Pressure Transmitter ◽  
Integrity Risk ◽  
Main Station ◽  
Pump Stations

The Enbridge Liquids Pipeline system is comprised of a large number of facilities including storage terminals, pump stations, injection sites, and delivery sites. Given the vast amount of small diameter piping (SDP) within company Pipeline facilities, SDP represents a significant portion of total facility integrity risk. An event such as equipment failure or product release can cause significant business impacts, and adverse consequences to the environment and/or safety of operations personnel. A quantitative risk based approach is required in order to establish robust, risk-based plans and programs to maintain the integrity of these SDP sections. Small diameter piping lengths are relatively short. Consequently, it is impractical to use SDP length as a unit of likelihood and risk measure. Instead, the preferred methodology is to determine the total number of assemblies for each type of SDP. In support of this approach, an inventory of SDP sections throughout the system has been gathered. For illustrative purposes, an example of a small diameter section would be a pressure transmitter branch connection. The isolatable section that would be risk assessed would start from the surface of the main station piping connection and continue up to the transmitter. This paper presents the framework for likelihood and consequence assessment of SDP based on the system description above. This framework quantitatively estimates the risk of SDP failure and risk-ranks SDP sections in support of implementing and establishing a system wide Risk Based Inspection and Maintenance program for SDP.

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