Modular Construction with Geosynthetics in Petroleum Industry

2021 ◽  
Author(s):  
Timothy Dwight Stark ◽  
Calvin Stapleton
Keyword(s):  
Positive Impact ◽  
Petroleum Industry ◽  
Modular Construction ◽  
Environmental Aspects ◽  
Containment System ◽  
Construction Techniques ◽  
Remote Sites ◽  
Equipment Testing ◽  
Time Required ◽  
And Control

Abstract This paper focuses on the use of modular construction techniques for installing geosynthetics in petroleum related applications. The petroleum industry uses geosynthetics for drill pad liners, above-ground and in-ground containment ponds, storage tanks, various impoundments including tailings storage, floating covers, road creation and/or support to remote sites, filtration, lining freshwater storage areas, dewatering, and stormwater management. Accelerating the construction of these facilities and the quality, i.e., no leaks, of the installation will have a positive impact on the financial and environmental aspects of the petroleum industry. Modular construction is a process in which a petroleum containment system is constructed primarily off-site, under controlled factory conditions, using the same design, materials, equipment, testing, and construction quality assurance and control (CQA/CQC) techniques as a field constructed facility – but usually in about one-half the time, for significantly less cost, and with few, if any, defects. This is due to the clean and constant conditions present in a factory setting. For example, installation of a factory-fabricated geomembrane can occur simultaneously while site work is being conducted. With factory fabrication, no destructive sampling and testing of the field welds that join rolls of the geomembrane are needed. As a result, a factory fabricated geomembrane can be installed in at least one-half of the time required for traditional field fabrication and with higher quality. This results in the containment system being utilized sooner, being more protective, and creating a faster return on investment.

scholarly journals Techno-Economic Planning and Operation of the Microgrid Considering Real-Time Pricing Demand Response Program

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4597
Author(s):  
Zi-Xuan Yu ◽  
Meng-Shi Li ◽  
Yi-Peng Xu ◽  
Sheraz Aslam ◽  
Yuan-Kang Li
Keyword(s):  
Real Time ◽  
Demand Response ◽  
Positive Impact ◽  
Environmental Aspects ◽  
Component Size ◽  
Cost Of Energy ◽  
Four Seasons ◽  
Demand Response Program ◽  
Real Time Pricing

The optimal planning of grid-connected microgrids (MGs) has been extensively studied in recent years. While most of the previous studies have used fixed or time-of-use (TOU) prices for the optimal sizing of MGs, this work introduces real-time pricing (RTP) for implementing a demand response (DR) program according to the national grid prices of Iran. In addition to the long-term planning of MG, the day-ahead operation of MG is also analyzed to get a better understanding of the DR program for daily electricity dispatch. For this purpose, four different days corresponding to the four seasons are selected for further analysis. In addition, various impacts of the proposed DR program on the MG planning results, including sizing and best configuration, net present cost (NPC) and cost of energy (COE), and emission generation by the utility grid, are investigated. The optimization results show that the implementation of the DR program has a positive impact on the technical, economic, and environmental aspects of MG. The NPC and COE are reduced by about USD 3700 and USD 0.0025/kWh, respectively. The component size is also reduced, resulting in a reduction in the initial cost. Carbon emissions are also reduced by 185 kg/year.

Computer Implementation of the Dykstra-Parsons Method of Waterflood Calculation

2021 ◽  
Author(s):  
Prosper Kiisi Lekia
Keyword(s):  
Petroleum Industry ◽  
Injection Pressure ◽  
Injection Rate ◽  
Process Time ◽  
Computer Implementation ◽  
Natural Energy ◽  
Recovery Techniques ◽  
Secondary Recovery ◽  
Time Required ◽  
User Friendly

Abstract One of the challenges of the petroleum industry is achieving maximum recovery from oil reservoirs. The natural energy of the reservoir, primary recoveries in most cases do not exceed 20%. To improve recovery, secondary recovery techniques are employed. With secondary recovery techniques such as waterflooding, an incremental recovery ranging from 15 to 25% can be achieved. Several theories and methods have been developed for predicting waterflood performance. The Dykstra-Parson technique stands as the most widely used of these methods. The authors developed a discrete, analytical solution from which the vertical coverage, water-oil ratio, cumulative oil produced, cumulative water produced and injected, and the time required for injection was determined. Reznik et al extended the work of Dykstra and Parson to include exact, analytical, continuous solutions, with explicit solutions for time, constant injection pressure, and constant overall injection rate conditions, property time, real or process time, with the assumption of piston-like displacement. This work presents a computer implementation to compare the results of the Dykstra and Parson method, and the Reznik et al extension. A user-friendly graphical user interface executable application has been developed for both methods using Python 3. The application provides an interactive GUI output for graphs and tables with the python matplotlib module, and Pandastable. The GUI was built with Tkinter and converted to an executable desktop application using Pyinstaller and the Nullsoft Scriptable Install System, to serve as a hands-on tool for petroleum engineers and the industry. The results of the program for both methods gave a close match with that obtained from the simulation performed with Flow (Open Porous Media). The results provided more insight into the underlying principles and applications of the methods.

EVALUASI ASPEK LINGKUNGAN TEBING BREKSI MENGGUNAKAN INDIKATOR SUSTAINABLE TOURISM UNWTO

Pringgitan ◽  
2020 ◽  
Vol 1 (1) ◽  
pp. 25-39
Author(s):  
Andreas Yogi Prasetyo
Keyword(s):  
Negative Impact ◽  
Positive Impact ◽  
Sustainable Tourism ◽  
Rapid Development ◽  
Environmental Aspects ◽  
Nature Tourism ◽  
Natural Beauty ◽  
World Tourism Organization ◽  
Tourism Organization ◽  
Depth Interviews

Endowed with stunning natural beauty, Sleman has become a destination increasingly flooded by tourists from year to year. The rapid development of tourism does have a positive impact, especially on the economic side, but on the other hand, it can have a negative impact if the management does not prioritize the principles of sustainable tourism. The type of tourism that can be affected is tourism that relies on nature as its main attraction, Cliff of Breksi is one of them. Cliff of Breksi has experienced rapid development in terms of the number of tourist visits, but it has never been examined whether its management is following the principle of sustainability. The objectives of this research are: a) to identify the management of the environmental aspects of Cliff of Breksi, whether it is following the indicators of sustainable tourism from The World Tourism Organization (UNWTO) and b) determine what things need to be improved so that management can be more optimal. The research method used is a descriptive qualitative method. Research data were collected through in-depth interviews and observations. The results of the study indicate that the manager has so far had awareness and understanding in applying the principles of sustainable tourism as in the indicators of UNWTO sustainable tourism. Keywords: evaluation of nature tourism, indicator, sustainable tourism

Integrating critical chain project management with last planner system for linear scheduling of modular construction

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Tarek Salama ◽  
Ahmad Salah ◽  
Osama Moselhi
Keyword(s):  
Project Management ◽  
Control Procedure ◽  
Modular Construction ◽  
Content Type ◽  
Linear Scheduling ◽  
Last Planner System ◽  
Critical Chain Project Management ◽  
Last Planner ◽  
And Control ◽  
Critical Chain

Purpose The purpose of this paper is to present a new method for project tracking and control of integrated offsite and onsite activities in modular construction considering practical characteristics associated with this type of construction. Design/methodology/approach The design embraces building information modelling and integrates last planner system (LPS), linear scheduling method (LSM) and critical chain project management (CCPM) to develop tracking and control procedures for modular construction projects. The developed method accounts for constraints of resources continuity and uncertainties associated with activity duration. Features of proposed method are illustrated in a case example for tracking and control of modular projects. Findings Comparison between developed schedule and Monte Carlo simulation showed that baseline duration generated from simulation exceeds that produced by developed method by 12% and 10% for schedules with 50% and 90% confidence level, respectively. These percentages decrease based on interventions of members of project team in the LPS sessions. The case example results indicate that project is delayed 5% and experienced cost overrun of 2.5%. Originality/value Developed method integrated LPS, LSM and CCPM while using metrics for reliability assessment of linear schedules, namely, critical percent plan complete (PPCcr) and buffer index (BI). PPCcr and BI measure percentage of plan completion for critical activities and buffer consumption, respectively. The developed method provides a systematic procedure for forecasting look-ahead schedules using forecasting correction factor Δt and a newly developed tracking and control procedure that uses PPCcr and BI. Quantitative cost analysis is also provided to forecast and monitor project costs to prove the robustness of proposed framework.

scholarly journals The Effect of Enterprise Risk Management (ERM) on Firm Performance: Evidence from the Diversified Industry of Sri Lanka

2018 ◽  
Vol 10 (1) ◽  
pp. 75
Author(s):  
Kingsley Karunaratne Alawattegama
Keyword(s):  
Firm Performance ◽  
Sri Lanka ◽  
Empirical Evidence ◽  
Negative Impact ◽  
Positive Impact ◽  
Enterprise Risk Management ◽  
Performance Information ◽  
Return On Equity ◽  
Enterprise Risk ◽  
And Control

The objective of this empirical study is to explore the effect of the adoption of ERM on the performance of the diversified industry of Sri Lanka. The extent of the adoption of ERM is assessed based on eight ERM functions recognized by the ERM integrated framework of the committee of sponsoring organization of the Treadway Commission and use return on equity as a proxy to measure firm performance. This study finds ERM supportive internal environment, risk-aligned objective setting, event identifications, and risk response have a positive impact on firm performance. However, none of those impacts were statistically significant. Surprisingly, empirical evidence reveals that risk assessment and control activities have a negative impact on the firm performance. Information & communication and monitoring functions indicate a significant impact on firm performance. Nevertheless, monitoring function shows a negative impact on the firm performance. The researcher believes this negative impact is attributable to the increased cost of monitoring activities that is crucial for a diversified business setup. This empirical evidence induces the researcher to conclude that, except for communication and monitoring, the adoption of ERM has no significant impact on the firm performance. These findings are contradictory with the findings of prior researchers.

scholarly journals Pengenalan, Optimalisasi Optimalisasi Pengenalan Produk Unggulan Desa Melalui Pelatihan Website Promosi Kecamatan Patuk Gunungkidul

2020 ◽  
Vol 4 (3) ◽  
pp. 490-495
Author(s):  
Astika Ayuningtyas ◽  
Yuliani Indrianingsih ◽  
Uyuunul Mauidzoh
Keyword(s):  
Positive Impact ◽  
Its Region ◽  
The Internet ◽  
Public And Private ◽  
Tourist Destinations ◽  
The World ◽  
Promotional Materials ◽  
Feasibility Test ◽  
And Control ◽  
The Web

The development of information and computerized tenology has led to what is called the Internet and the World Wide Web (WWW). In addition, the dramatic development of the Internet has given users more choice and control over content, and also provides individuals, businesses, and public and private organizations with the opportunity to generate and disseminate information. The interactive features of the web can be an effective way to build and maintain mutually beneficial relationships if the web is used properly. The presence of the Internet has proven to have a positive impact on the development of a village, sub-district or district to introduce and inform the potential of its region. This is evident in several regions of Indonesia which have successfully used Internet facilities to introduce tourist destinations to the world. Therefore, the training on the promotion website is an effort to optimize the introduction of high quality village products in the district of Patuk and is also intended to follow the results of research on the design of a promotion of superior products and tourist objects on the web in Patuk Gunungkidul district. On the basis of the website promotion feasibility test during the training for each representative in 11 villages in the Patuk sub-district, 87.36% was obtained, so that it can be said that the Introduction of superior village products via promotional materials based on the website was optimal and met the needs of users.

scholarly journals Flexible Design as an Acquisition Opportunity

2017 ◽  
Vol 11 (21) ◽  
pp. 51
Author(s):  
James A. Johnson ◽  
Ian H. Wakeling
Keyword(s):  
Empty Space ◽  
External Support ◽  
Modular Construction ◽  
Control Cost ◽  
Acquisition Strategies ◽  
Construction Techniques ◽  
Design Build ◽  
The World ◽  
Cost Penalty ◽  
Partnership Models

Navies around the world adopt different ways of acquiring ships. Using a single large prime contractor, placing individual contracts for design, build and integration, or employing a state-owned shipyard with external support are all procurement options that we see today.‘Flexibility’ in warship design is normally perceived as provision of extra empty space, weight and power, which could be filled with new equipment at some point in the future. However, this idea can be extended to describe a design that achieves true flexibility by exploiting the synergy with different acquisition strategies, adaptability allowing a choice of balanced capability and options for incremental acquisition to control cost and risk profiles. This leads to a design that will deliver a class of warships able to meet the evolving roles and threats throughout its life, whilst not introducing additional risk and cost into the programmes of any modern Navy around the world which adopts it.To achieve this flexibility BMT have created a single base design with multiple configurations; a warship with a functional arrangement that is able to be tailored to meet the specific requirements and budget of each Navy, minimising the initial cost penalty in a programme, and maximising commonality. It also allows for modular construction techniques which not only apply to single yard construction, including small and medium shipyards, but enables blocks to be built in several shipyards.This paper will describe the underlying considerations behind this flexibility, including incremental acquisition as a cost mitigation in procurement programmes, and the different potential partnership models between shipyard, designer and integrator in effective acquisition programmes which work to the strengths of each party.

scholarly journals Zone-Oriented Drawings for Life-Cycle Management

1989 ◽  
Vol 5 (02) ◽  
pp. 126-134
Author(s):  
James R. Wilkins
Keyword(s):  
Life Cycle ◽  
Life Cycle Management ◽  
Maintenance Management ◽  
Management Process ◽  
Modular Construction ◽  
Construction Techniques ◽  
Operational Life ◽  
Maintenance Activities

ABSTRACT This paper presents the results of a study conducted to determine whether unit-oriented construction drawings, which are being developed and used by shipbuilders using modern zone-oriented, or modular, construction techniques, will satisfactorily substitute for system-oriented detailed arrangement drawings in the Navy's life-cycle maintenance management process. The study concluded that modular construction drawings will provide the necessary data in a more usable format, and thus are the preferred approach for the Navy's use. However, the study also identified several additionally needed features that are not now being provided in unit-oriented drawings, but which must be included in order to meet the needs of planning and maintenance activities during the operational life of a ship. A number of other observations about drawing use and maintenance are provided.

scholarly journals Urban nature as a response to stress of urban population

2017 ◽  
pp. 185-198
Author(s):  
Maja Vujcic ◽  
Jelena Tomicevic-Dubljevic
Keyword(s):  
Urban Population ◽  
Positive Impact ◽  
Well Being ◽  
Mental Wellbeing ◽  
Control Group ◽  
Study Group ◽  
Urban Nature ◽  
Healthy Habits ◽  
Response To Stress ◽  
And Control

In everyday life, urban residents, especially the younger population, have given up some healthy habits of spending their free time outdoors in urban forests or parks. This study was conducted in order to understand how urban nature might help in reducing psychological stress and improving mental wellbeing. The participants were volunteer students of the Faculty of Forestry in Belgrade (n=47). These students were randomly recruited in the study and control group and self-tested using DASS 21 scale. The Arboretum of the Faculty of Forestry represented a research location and a special healing environment with a high variety of species. The study group stayed at the Arboretum during the study break period, while a control group was inside the Faculty. After the intervention, a slightly greater reduction in stress scale on the total score was recorded in the study group (F1.45 = 3.781; r < .058). This study has shown that urban green areas can have a positive impact on the mental well-being and reveal their role as a great response to the stress from urban population.

scholarly journals UAV BLOCK GEOREFERENCING AND CONTROL BY ON-BOARD GNSS DATA

2020 ◽  
Vol XLIII-B2-2020 ◽  
pp. 9-16
Author(s):  
G. Forlani ◽  
F. Diotri ◽  
U. Morra di Cella ◽  
R. Roncella
Keyword(s):  
Environmental Protection Agency ◽  
Low Cost ◽  
Single Point ◽  
Test Site ◽  
Ground Control ◽  
Italian Alps ◽  
Ground Control Points ◽  
Remote Sites ◽  
Gnss Data ◽  
And Control

Abstract. Unmanned Aerial Vehicles (UAV) are established platforms for photogrammetric surveys in remote areas. They are lightweight, easy to operate and can allow access to remote sites otherwise difficult (or impossible) to be surveyed with other techniques. Very good accuracy can be obtained also with low-cost UAV platforms as far as a reliable ground control is provided. However, placing ground control points (GCP) in these contexts is time consuming and requires accessibility that, in some cases, can be troublesome. RTK-capable UAV platforms are now available at reasonable costs and can overcome most of these problems, requiring just few (or none at all) GCP and still obtaining accurate results. The paper will present a set of experiments performed in cooperation with ARPA VdA (the Environmental Protection Agency of Valle d’Aosta region, Italy) on a test site in the Italian Alps using a Dji Phantom 4 RTK platform. Its goals are: a) compare accuracies obtainable with different calibration procedures (pre- or on-the-job/self-calibration); b) evaluate the accuracy improvements using different number of GCP when the site allows for it; and c) compare alternative positioning modes for camera projection centres determination, (Network RTK, RTK, Post Processing Kinematic and Single Point Positioning).

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