Numerical Simulation of the Mooring Procedures of the BGL-1 Pipeline Launching Barge

2004 ◽  
Author(s):  
Isai´as Quaresma Masetti ◽  
Claudio R. Mansur Barros ◽  
Breno Pinheiro Jacob ◽  
Carl Horst Albrecht ◽  
Beatriz S. L. Pires de Lima ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Case Studies ◽  
Environmental Conditions ◽  
Management System ◽  
Database System ◽  
Computational Tool ◽  
Mooring Lines ◽  
System Database ◽  
Correct Definition ◽  
Definition Of

The objective of this paper is to present the application of a computational tool intended to help the crew of the BGL-1 pipeline launching barge to develop safe mooring procedures. This tool is able to calculate the deformed catenary configuration of all mooring lines, regarding the subsea layout and the local environmental conditions, and taking into account one or more buoys attached to the mooring lines in order to avoid interference and accidents with subsea obstacles. One of the main characteristics of this computational tool is the fact that it is able to incorporate the correct definition of the seabed from bathymetric curves, and to automatically consider the position of the subsea obstacles, and possible interferences between the mooring lines and the obstacles. This is performed through a specialized interface with the SGO (Obstacles Management System) database system. This system, developed by Petrobras, contains frequently updated information about the bathymetry and position of subsea obstacles, gathered by a special vessel equipped with a ROV (Remote Operated Vehicle). Case studies will be presented, in order to illustrate the application of the system to the design of actual mooring procedures.

Numerical Simulation of Offshore Pipeline Installation by Lateral Deflection Procedure

2007 ◽  
Author(s):  
Danilo Machado Lawinscky da Silva ◽  
Rodrigo Almeida Bahiense ◽  
Breno Pinheriro Jacob ◽  
Fernando Gomes da Silva Torres ◽  
Antonio Roberto Medeiros ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Numerical Simulations ◽  
Computational Tool ◽  
Lateral Deflection ◽  
Correct Definition ◽  
Offshore Pipeline ◽  
Definition Of

Conventional offshore pipeline installation operations in Brazil have been performed in an S-Lay procedure employing the BGL-1 barge, owned by Petrobras. However, this procedure has some limits, and may not be feasible in some particular scenarios. Therefore, the objective of this work is to present the numerical simulation of an alternative pipeline installation procedure. This procedure basically consists of performing the pipeline assembly on shore, and deflecting it to the sea using a tug boat. The numerical simulations employ the SITUA-Prosim computational tool, which is able to incorporate the correct definition of the seabed and shore from bathymetric curves. An actual pipeline installation by this lateral deflection procedure is analyzed and discussed. The characterization of the procedure passes through the determination of the better velocity and direction of the tug boat in order to minimize the efforts on the pipeline (especially due to the curvatures).

Numerical Simulation of a Pipeline Installation Procedure at the Negro River

2008 ◽  
Author(s):  
Danilo Machado Lawinscky da Silva ◽  
Fabri´cio Nogueira Correˆa ◽  
Breno Pinheiro Jacob ◽  
Fernando Gomes da Silva Torres ◽  
Antonio Roberto de Medeiros
Keyword(s):  
Numerical Simulation ◽  
Amazon Forest ◽  
Mooring Lines ◽  
Negro River ◽  
Correct Definition ◽  
Offshore Pipeline ◽  
Heterogeneous Soil ◽  
High Current Velocity ◽  
Definition Of ◽  
Real Challenge

The installation of pipelines is among the most challenging offshore operations. Conventional offshore pipeline installation operations in Brazil have been performed in an S-Lay procedure employing the BGL-1 barge, owned by Petrobras. The BGL-1 is a second generation lay barge and performs installation operations by moving forward using its own mooring lines. The objective of this work is to present the numerical simulation of a pipeline installation operation performed at a particular scenario, Negro river in the Amazon forest. The high current velocity, very irregular bathymetry and heterogeneous soil make this procedure a real challenge. The numerical simulations employ the SITUA-Prosim computational tool, which is able to incorporate the correct definition of the bottom from bathymetric curves. The two crucial points in the performed analyses are: (a) first, to verify if it is possible to move the barge using its own mooring lines in such environmental condition and (b) second, to analyze the pipeline behavior in such scenario.

Numerical Calculation and Model Test Study on a Quay Mooring Semi-Submersible Drilling Platform

2010 ◽  
Author(s):  
Qi Wang ◽  
Xiaopeng Wu ◽  
Haining Lu ◽  
Gang Chen ◽  
Xiaoyuan Wu
Keyword(s):  
Numerical Simulation ◽  
Numerical Calculation ◽  
Static Analysis ◽  
Model Test ◽  
Environmental Conditions ◽  
Dynamic Effect ◽  
Mooring System ◽  
Mooring Lines ◽  
Nonlinear Characteristics ◽  
Test Study

This paper introduces the study in both numerical calculation and model test of a Semi-submersible drilling platform moored along the quayside of Shanghai Waigaoqiao Shipbuilding Co. Ltd. (SWS). To obtain reliable quay mooring system for a SEMI in the out-fitting condition, complicated factors, such as a barge is applied between the SEMI and the quayside, quayside has practical limited conditions, nonlinear characteristics of mooring lines and fenders, etc., are firstly discussed. Then based on several simplifications, static analysis about different environmental conditions, normal and typhoon, are carried out, in order to design the preliminary layouts. Later on, model test with the scale of 1:50 is conducted in the basin of Shanghai Jiao Tong University (SJTU). Results between numerical simulation and model test are compared and the dynamic effect created by wave is investigated. Several principles for quay mooring layout of semi-submersible drilling platform have been concluded.

scholarly journals DONI WINATA_165100085_PBD_SYSTEM DEVELOPMENT AND DATABASE SECURITY

2018 ◽  
Author(s):  
Doni winata
Keyword(s):  
Computer Program ◽  
Management System ◽  
Database Management ◽  
Database System ◽  
Database Security ◽  
Database Management System ◽  
Basic Data ◽  
System Database ◽  
Management Database

DONI WINATA_165100085_PBD_SYSTEM DEVELOPMENT AND DATABASE SECURITYBasic Data (Database) Basic data (English: database) is a collection of information stored on a computer systematically so that it can be used on a computer program to obtain information from the database. Software used to manage and release queries (databases) is called a management database system (database management system, DBMS).

Definition of the Best Position for the Turret in an FPSO Based on a Hydrodynamic-Structural Analysis

2007 ◽  
Author(s):  
Ge´rson B. Matter ◽  
Sergio H. Sphaier ◽  
Joel S. Sales
Keyword(s):  
Structural Analysis ◽  
Environmental Conditions ◽  
Experimental Results ◽  
Physical Models ◽  
Structural Behavior ◽  
Hydrodynamic Behavior ◽  
Mooring Lines ◽  
Definition Of

This paper presents a methodology for the positioning of a turret based on the hydrodynamic behavior of the FPSO and the structural behavior of the mooring lines. It is presented a procedure for the simulation of the equilibrium and the dynamics of the FPSO’s for a range of environmental conditions and positions of the turret. The results are studied in order to define the best position for the turret. Experimental results are used in order to calibrate the physical models.

Principles of economic security management of institutions of higher education

2019 ◽  
pp. 174-181
Author(s):  
Nataliia Tsymbalenko
Keyword(s):  
Management System ◽  
Semantic Analysis ◽  
Security Management ◽  
Economic Security ◽  
Theoretical Concepts ◽  
Economic Role ◽  
Social Mission ◽  
Analysis And Synthesis ◽  
Definition Of ◽  
The University

The subject of research-theoretical concepts of economic security managementof universities. The purpose of the article. The study of the essence of the economicsecurity management system of the university and the definition of its main tasks,the formulation of principles of economic security management of the university.Methodology. The dialectical method, methods of analysis and synthesis, methodsof structural-logical and semantic analysis were used to study and summarizescientific papers on the research topic. The results of the work. The essence of theuniversity’s economic security management system has been reviewed. The maintasks of the control system have been identified. A definition of the university’seconomic security system has been proposed. Principles of management of economicsecurity of the university have been formulated. These are: scientific andorganizational and social principles. Conclusions. The proposed principles allow totake into account the economic role and social mission of universities in managingeconomic security.

Loom weights in Archaic South Italy and Sicily: Fice case studies

2015 ◽  
Vol 8 ◽  
pp. 123-155
Author(s):  
Hedvig Landenius Enegren
Keyword(s):  
Case Studies ◽  
Indigenous Peoples ◽  
Environmental Conditions ◽  
Experimental Archaeology ◽  
Archaeological Sites ◽  
Site Specificity ◽  
Archaeological Record ◽  
South Italy ◽  
Local Traditions ◽  
Tool Technology

Textiles are perishables in the archaeological record unless specific environmental conditions are met. Fortunately, the textile tools used in their manufacture can provide a wealth of information and via experimental archaeology make visible to an extent what has been lost. The article presents and discusses the results obtained in a research project focused on textile tool technologies and identities in the context of settler and indigenous peoples, at select archaeological sites in South Italy and Sicily in the Archaic and Early Classical periods, with an emphasis on loom weights. Despite a common functional tool technology, the examined loom weights reveal an intriguing inter-site specificity, which, it is argued, is the result of hybrid expressions embedded in local traditions. Experimental archaeology testing is applied in the interpretation of the functional qualities of this common artefact.

Democracy and Political Culture

2019 ◽  
Author(s):  
Ross McKibbin
Keyword(s):  
Political Culture ◽  
Case Studies ◽  
Social System ◽  
Political System ◽  
Democratic Politics ◽  
Social Structures ◽  
The Political ◽  
The Subject ◽  
The One ◽  
Definition Of

This book is an examination of Britain as a democratic society; what it means to describe it as such; and how we can attempt such an examination. The book does this via a number of ‘case-studies’ which approach the subject in different ways: J.M. Keynes and his analysis of British social structures; the political career of Harold Nicolson and his understanding of democratic politics; the novels of A.J. Cronin, especially The Citadel, and what they tell us about the definition of democracy in the interwar years. The book also investigates the evolution of the British party political system until the present day and attempts to suggest why it has become so apparently unstable. There are also two chapters on sport as representative of the British social system as a whole as well as the ways in which the British influenced the sporting systems of other countries. The book has a marked comparative theme, including one chapter which compares British and Australian political cultures and which shows British democracy in a somewhat different light from the one usually shone on it. The concluding chapter brings together the overall argument.

Historical Perspectives on Innovation in Indian Business

2018 ◽  
Author(s):  
Claude Markovits
Keyword(s):  
Case Studies ◽  
Technological Innovation ◽  
Historical Perspective ◽  
Specific Context ◽  
Colonial Era ◽  
Industrial Firm ◽  
Historical Perspectives ◽  
Entire World ◽  
Definition Of ◽  
Trading Network

This chapter deals with the question of innovation in Indian business from a historical perspective. After a brief survey of the literature, emphasizing how divided scholarly opinion was regarding the existence of forms of innovation in Indian business prior to the colonial era, the focus shifts to the British period. It is shown that Schumpeter’s definition of innovation equating it with technological innovation cannot be fruitfully applied to the Indian business scene. Two case studies are then proposed: Tata Iron & Steel, the largest Indian industrial firm, is shown to have been innovative in the specific context of India’s backward industrial scene, while the Sindwork merchants of Hyderabad are an instance of an Indian trading network which extended its range to the entire world. Concluding remarks interrogate post-Independence developments and stress the limits of the innovativeness of Indian business, prior to the recent liberal reforms.

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