Technomar (Germany)

Abstract: Queuing is the simulation where a group of people in need of service will have to wait in a sequence of lines before they finally get service. This is because when the ability to provide a smaller service when compared with the need for a service. The problem faced by SAMSAT Office Tehcnomart Outlet Karawang is the high arrival rate, especially in 09:00-14:00 hours. The purpose of this research is to analyses queues and determine the number of optimal vehicle tax payment servers. Data collection is done by observing and recording queues that occur in SAMSAT Office Technomart Outlet Karawang. The current queue conditions are associated with (M/M/C). With the discipline of First In First Out queue. Based on the result of the calculation that have been done, it can be known that the performance of the queue system on SAMSAT Office Technomart Outlet Karawang currently is using the vehicle tax payment 1 payment server with an average waiting time in the queue for  2 minutes. As for the purposed repair of the queue system by using 2 servers payment vehicle tax average waiting time in the queue decreased to 0,0924 minutes. From the analysis results showed that SAMSAT Office Technomart Outlet Karawang better use 2 servers payment.Keywords: Queuing, SAMSAT Office Technomart Outlet Karawang, Simulation

This article deals with the development of a numerical tool based on an integrated synthesis model to carry out the first project cycle of floating liquefied natural gas (FLNG) platforms to produce, process, store, and export liquefied natural gas (LNG). The topside configuration, tank geometry and capacity, production levels, equipment list, environmental and operating conditions, classification society requirements, structure, stability, and seakeeping are considered in a single synthesis model, generating a sufficiently large number of solutions. The case generation and the evaluation process are performed hierarchically, dividing the parameters into groups to better solve the solution space, which cannot be achieved with conventional techniques such as traditional point-based design. This methodology is applied as a case study to design three FLNG platforms with different production levels (2, 3, and 4 million metric tons per year). Performance parameters are defined and evaluated, optimizing downtime, structural mass, and load capacity. The resulting platforms are compared to existing FLNG dimensions. Essential conclusions are drawn about design improvements, such as key dimensions, quantity, and configuration of tanks, freeboard specifications, and operating draft. The developed synthesis framework proved to be a quick and useful tool for the early stages of the FLNG project.

ABSTRACT The use of pipes or cables laid on seabottom calls for the adoption of means to guarantee protection against possible damage caused by dragging anchors, trawler nets and the action of currents on free spans. The preferred protection method, most commonly used, is the burying of the cable or pipe in a trench of proper size dug along the line route: at present, for the most important cable and pipe laying projects, the national authorities prescribe a line burying for the whole route. To give a reliable solution to this construction problem, Tecnomare, on the basis of the design and construction experience gained during a previous project TM 102, has designed, built and tested a new system for the burying of underwater cables and pipes, named TM 402, which is now at an operating stage. Such a system consists of an underwater remotely operated crawler, linked by means of an umbilical cable to surface equipment for power supply and control; it can operate under manual or fully automatic computer control in a various spread of soil conditions and in water depths up to 160 meters. The underwater vehicle supports a special chain trenching tool by which a narrow trench with vertical walls is made. The cable or flexible line is supported by a proper handling device which lays it with a controlled geometry onto the trench bottom. A complete instrumentation system allows a continuous monitoring of the system performances and of the cable/pipe conditions. In this paper a detailed description of the system and of its main components and subsystems is given, together with its operating capabilities and procedures. The results of the sea trials carried out in the Summer of the 1980 campaign are, moreover, reported. INTRODUCTION The construction of underwater hydrocarbon transportation lines and of underwater electric power or telecommunication links requires the adoption of means which may guarantee their protection against possible damage caused by human activities or environmental unforeseen loadings. This protection is necessary, not only for the technical-economical reasons connected with the, usually, very high downtime and repair costs consequent to the disruption of the line's economic utilization, but also, in the case of oil/gas transport lines, for ecological and safety reasons due to pollution risk in case of line failure. Safety rules in many countries impose the burial of oil and gas underwater pipelines; the number of underwater electric power line projects for which authorities have prescribed partial or total burying is increasing. The main causes of damage to underwater lines is the impact with dropping or dragging anchors, trawl net dead weight and the action of currents and waves on free-spans. For large size pipelines an alternative to a protection technique can consists in an overdesign of the pipe and coating mechanical characteristics in order to make it capable of taking up possible accidental impact loads.