Torsional Vibration Protection System

Author(s):  
Valerio Depau ◽  
Valerio Rossi ◽  
Stefano Ponticelli

The increasing use of variable frequency drives (VFDs) and island mode power generation due to remotely located sites make these Oil and Gas industry plants vulnerable to sub-synchronous torsional interactions. These interactions can occur with synchronous generators supplying island-like power systems with large VFDs, but also in synchronous motor-driven turbomachinery, especially with increased nominal power and complexity of the drive train. The increasing number of site issues evidences the lack of suitable torsional vibration measurement systems. This paper describes applications of the TVPS, a device developed to address turbomachinery torsional vibration problems. The system answers the need for ruggedness and durability for long term monitoring and can be installed on any turbocompressor or turbogenerator unit without imposing additional requirements. TVPS applications experienced by the authors will be described in this paper, including coupling of the TVPS with an active torsional mode damping control successfully tested on an LNG production train.

2019 ◽  
Vol 4 (1) ◽  
Author(s):  
A.A Gde Satia Utama ◽  
Arief Eko Prabiyanto

The aim of this study proposes new system for PT Trakindo as an official agent company (dealer) in Indonesia for Caterpillar products. The company’s operations are the world's largest heavy equipment manufacturer which includes mining industry, oil and gas industry, construction, forestry, agriculture, and power systems. The problem is Procurement of goods and services performed by PT Trakindo Utama currently undergoing a lot of obstacles such as significant cost in finding the right suppliers, bad integration with suppliers, dependence on suppliers, the bill submitted by the supplier can not timely because the billing document incomplete, the use of media such as telephone and so on which may cause considerable cost. The contribution of this research are developing the procurement system design, and web-based services are expected to help anticipate and resolve these problems. This research was conducted using qualitative and case study method, which has the characteristics of exploratory. The results achieved are expected to improve the efficiency and effectiveness of the procurement process at PT Trakindo Utama.


2020 ◽  
Vol 78 (7) ◽  
pp. 861-868
Author(s):  
Casper Wassink ◽  
Marc Grenier ◽  
Oliver Roy ◽  
Neil Pearson

2004 ◽  
pp. 51-69 ◽  
Author(s):  
E. Sharipova ◽  
I. Tcherkashin

Federal tax revenues from the main sectors of the Russian economy after the 1998 crisis are examined in the article. Authors present the structure of revenues from these sectors by main taxes for 1999-2003 and prospects for 2004. Emphasis is given to an increasing dependence of budget on revenues from oil and gas industries. The share of proceeds from these sectors has reached 1/3 of total federal revenues. To explain this fact world oil prices dynamics and changes in tax legislation in Russia are considered. Empirical results show strong dependence of budget revenues on oil prices. The analysis of changes in tax legislation in oil and gas industry shows that the government has managed to redistribute resource rent in favor of the state.


2011 ◽  
pp. 19-33
Author(s):  
A. Oleinik

The article deals with the issues of political and economic power as well as their constellation on the market. The theory of public choice and the theory of public contract are confronted with an approach centered on the power triad. If structured in the power triad, interactions among states representatives, businesses with structural advantages and businesses without structural advantages allow capturing administrative rents. The political power of the ruling elites coexists with economic power of certain members of the business community. The situation in the oil and gas industry, the retail trade and the road construction and operation industry in Russia illustrates key moments in the proposed analysis.


2019 ◽  
Vol 16 (6) ◽  
pp. 50-59
Author(s):  
O. P. Trubitsina ◽  
V. N. Bashkin

The article is devoted to the consideration of geopolitical challenges for the analysis of geoenvironmental risks (GERs) in the hydrocarbon development of the Arctic territory. Geopolitical risks (GPRs), like GERs, can be transformed into opposite external environment factors of oil and gas industry facilities in the form of additional opportunities or threats, which the authors identify in detail for each type of risk. This is necessary for further development of methodological base of expert methods for GER management in the context of the implementational proposed two-stage model of the GER analysis taking to account GPR for the improvement of effectiveness making decisions to ensure optimal operation of the facility oil and gas industry and minimize the impact on the environment in the geopolitical conditions of the Arctic.The authors declare no conflict of interest


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