Optical-Electronic System for Remote Measurements of Shifts and Deformations in Huge Mechanical and Engineering Constructions

Chugui, Yu. V.; Bazin, V. S.; Verkhogliad, Alexander G.; Kalichkin, Stepan V.; Kalikin, Vadim E.; Makarov, S. N.; Savkov, Sergei G.

doi:10.1088/1742-6596/48/1/104

Cited by 2 publications

(3 citation statements)

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“…FPBs on a similar structure at Lunskoye-A are monitored as well, however using a sophisticated optical-electronic system developed specifically for this application by the Russian Academy of Sciences' Technological Design Institute of Scientific Instrument Engineering [8,9].…”

Section: Considerations For Operationsmentioning

confidence: 99%

Seismic Challenges and Structural Solutions on the Berkut Platform

Slatnick

Fenz

Sheppard³

et al. 2013

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This paper describes the methodology and technical solutions employed to address earthquake loading challenges on the Berkut topsides, including design and operational considerations. The Berkut platform is part of the Sakhalin-I development in offshore Russia, which is located in an area of high seismicity. Offshore platforms in the region require highly specialized designs to balance the competing requirements resulting from earthquake, wave and ice loading. Design strategies used in the region to protect structures from earthquakes include a tuned mass damper to protect the drilling derrick on the Orlan platform and Friction Pendulum seismic isolation on the Lunskoye-A and Piltun-Astokhskoye-B platforms.The Berkut structure consists of a four-shaft gravity based structure (GBS) with a topsides operating weight of approximately 50,000 tonnes. Seismic isolation devices called Friction Pendulum Bearings (FPBs) are placed between the GBS shafts and the topsides to reduce horizontal load transfer and accelerations. A performance-based design approach was developed to derive load and resistance factors providing a specified probability of non-performance (2% in 50 years with a minimum 90% level of confidence). This approach, which can be applied to a broad range of extreme environmental design criteria, enabled the seismic design for Berkut to be completed with a more consistent level of reliability than would have been achieved using traditional methods. Seismic analyses were carried out using nonlinear time history analyses of a fully coupled analytical model containing topsides, GBS and soil. This was complemented by finite element analysis for local design.A seismic event of smaller magnitude than the design event can impact production unless Operations personnel can confirm that no safety-critical components have been compromised by earthquake loading. A custom structural monitoring system has been configured to monitor accelerations and FPB displacements; and an earthquake-response strategy has been implemented to enable Operations personnel to make prudent decisions following an event.

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Section: Considerations For Operationsmentioning

confidence: 99%

Seismic Challenges and Structural Solutions on the Berkut Platform

Slatnick

Fenz

Sheppard³

et al. 2013

All Days

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“…As soon as cumulative travel exceeds that distance the bearings should be replaced. For measurements of bearings movements the automatic optical-electronic system SAKHALIN was developed [7]. Its main aim is continuous noncontact measurement of the bearing location and calculation of the total distance traveled by the bearing for any defined time period.…”

Section: Friction Pendulum Bearing Displacement Measuring Technology mentioning

confidence: 99%

“…As soon as this distance exceeds that value, the bearings should be replaced. We have developed optical-electronic system SAKHALIN for permanent noncontact bearing position inspection and traveled distance measurement (error no less than 0.03%) under operating extreme temperature range from -40° C up to + 40° C. Functional possibilities and experimental results for SAKHALIN are presented and discussed [7]. Laser material processing (cutting, welding) of 3D large-size objects and treatment (ablation) of their surfaces take multifunctional universal laser technological system.…”

Section: Introductionmentioning

confidence: 99%

Optical electronic measuring systems and laser technologies for scientific and industrial applications

et al. 2006

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The novel results of the R & D activity of TDI SIE SB RAS in the field of the optical measuring technologies, as well as laser technologies for solving actual problems are presented. The metrological characterization of a perspective Fresnel method for high precision measuring the dimensions of objects is investigated. An optoelectronic noncontact method using diffractive optical element (DOE) for the 3D inspection of article holes is presented. A structured light method and system testing results for noncontact inspection of wire wear and its defects for train electro-supply network are discussed. For permanent noncontact bearing position inspection of oil-drilling platforms on Sakhalin coast (Russia) under extreme temperatures (± 40°C) we have developed optical-electronic method and system SAKHALIN. Multifunctional laser technological system LSP-2000 equipped by two Nd-YAG lasers was developed for cutting, welding and surface micro profiling with ablation process (working range of 3 × 3 × 0.6 m 3 , positioning error less than 10 µm). Safety of Russian nuclear reactors takes 100 % noncontact 3D dimensional inspection of all parts of fuel assemblies, including grid spacers. Results of development and testing the specialized high productive laser measuring machine, based on structured illumination, for 3D inspection of grid spacers with micron resolution are presented. For safety increasing of Russian railways TDI SIE has developed and produced automatic laser diagnostic system COMPLEX for inspection of geometric parameters of wagon wheel pairs for running train (speed up to 60 km/hr.), which is used successfully on Russian railways.

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Optical-Electronic System for Remote Measurements of Shifts and Deformations in Huge Mechanical and Engineering Constructions

Cited by 2 publications

References 1 publication

Seismic Challenges and Structural Solutions on the Berkut Platform

Seismic Challenges and Structural Solutions on the Berkut Platform

Optical electronic measuring systems and laser technologies for scientific and industrial applications

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