Browsing by Subject "Facilities"
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Item A Case Study of the Use of BIM and Construction Operations Building Information Exchange (COBie) for Facility Management(2012-10-19) Jawadekar, SalilThis study investigates the use of Building Information Modeling (BIM) and COBie for Facility Management on three projects where these concepts were used. Factors which affect these concepts are identified through a literature review. The study is divided into the sections of Responsibility for database formulation, Characteristics of database, Technology and Effect on work order response times. A qualitative analysis is conducted to study the application of these concepts and identify any problems encountered. A case study is conducted on three projects where BIM and COBie were used for facility management. It is found that though the database generated by using these concepts is useful for preventive maintenance, the data gathering and formulation process needs to be started during the design and construction phase to make use of BIM for facility management functions like space allocation, 3D mapping, building automation etc. This study can be used as a reference for further research based on quantitative analysis of the factors studied in the case study.Item An analysis to the main economic drivers for offshore wells abandonment and facilities decommissioning(2011-08) Wiegand, Sandra Milena; Nichols, Steven Parks, 1950-; Gupta, ManasDecommissioning and abandonment is a relevant issue in the petroleum industry because of the complex operations involved and the results after the decision has been made. Several factors could lead to abandoning wells and decommissioning platforms, among others hurricanes, production decline, economic limit, etc. Decommissioning and abandonment operations have a great impact in the revenue stream which is either lost or temporarily deferred depending on the situation. Every year between 100-150 platforms are decommissioned and approximately 620 wells are abandoned in the Gulf of Mexico. A case-by-case scenario should be revised on an annual basis and all the possible options to be considered and submitted to the Government. This thesis presents an overview of the topic and an analysis on when decommissioning and abandoning alternatives are recommended for the optimization of the economical resources.Item Quantifying E. coli Discharge from Failing Onsite Sewage Facilities in the Dickinson Bayou Watershed, Texas(2014-07-24) Morrison, DerekSince 1996, the E. coli levels in Dickinson Bayou have been considerably higher than the Texas state maximum of 126 colony forming units (CFU) per 100 mL for recreational waters. One hypothesis is that failing onsite sewage facilities (OSSFs) in the nearby residential areas are causing an increase of Escherichia coli (E. coli) concentrations in Dickinson Bayou. There are two types of OSSFs in the watershed; anaerobic and aerobic systems. The anaerobic systems discharge partially treated effluent below the soil surface from gravel drainage trenches while the aerobic systems disperse treated effluent on the soil surface using spray nozzles. This project was designed to determine if either of the two systems was contributing to the elevated E. coli concentrations in Dickinson Bayou. Two water quality monitoring stations were installed in the Dickinson Bayou watershed to estimate E. coli concentrations in surface runoff. One of the monitoring stations was placed in a neighborhood that uses OSSFs and the second station was placed in a neighborhood connected to a municipal sewage plant. Each monitoring station was equipped with a flow meter and an automatic water sampler. Runoff/rainfall relationships were established for each monitoring station. Water quality samples were obtained for sixteen rainfall events at the site with OSSFs and twelve events at the site with no OSSFs. Nearly all sampling events had at least one sample with an E. coli concentration greater than the state boundary. However, the concentrations from both sites were very similar to one another. A bacterial source tracking method was employed to conclude that a portion of the E. coli from both sites were of human origin. Further studies should focus on bacterial source tracking to determine the exact extent of human-based bacterial contamination in the Dickinson Bayou watershed.