field inspection
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Author(s):  
Simon Sawallich ◽  
Burkay Uzlu ◽  
Martin R. Lohe ◽  
Jimin Lee ◽  
Alexander Michalski ◽  
...  

Author(s):  
O.V. Shinkareva ◽  
V.A. Dikikh

The article is devoted to the analysis of the types of control measures that will be carried out in accordance with Federal Law No. 248-FZ of the “On State Control (Supervision) and Municipal Control in the Russian Federation”, the main provisions of which will enter into force on July 1, 2021. This law also applies to the activities of organizations that are subject to licensing. Types of control (supervisory) measures are considered, in particular, control and monitoring procurement, inspection visit, raid inspection, documentary and field inspection, as well as monitoring compliance with mandatory requirements and field examination. The essence of each type of control measure, the basis for carrying out the measures, control actions that can be used in their implementation are analyzed.


2020 ◽  
Vol 9 (12) ◽  
pp. 759
Author(s):  
Yufu Zang ◽  
Bijun Li ◽  
Xiongwu Xiao ◽  
Jianfeng Zhu ◽  
Fancong Meng

Heritage documentation is implemented by digitally recording historical artifacts for the conservation and protection of these cultural heritage objects. As efficient spatial data acquisition tools, laser scanners have been widely used to collect highly accurate three-dimensional (3D) point clouds without damaging the original structure and the environment. To ensure the integrity and quality of the collected data, field inspection (i.e., on-spot checking the data quality) should be carried out to determine the need for additional measurements (i.e., extra laser scanning for areas with quality issues such as data missing and quality degradation). To facilitate inspection of all collected point clouds, especially checking the quality issues in overlaps between adjacent scans, all scans should be registered together. Thus, a point cloud registration method that is able to register scans fast and robustly is required. To fulfill the aim, this study proposes an efficient probabilistic registration for free-form cultural heritage objects by integrating the proposed principal direction descriptor and curve constraints. We developed a novel shape descriptor based on a local frame of principal directions. Within the frame, its density and distance feature images were generated to describe the shape of the local surface. We then embedded the descriptor into a probabilistic framework to reject ambiguous matches. Spatial curves were integrated as constraints to delimit the solution space. Finally, a multi-view registration was used to refine the position and orientation of each scan for the field inspection. Comprehensive experiments show that the proposed method was able to perform well in terms of rotation error, translation error, robustness, and runtime and outperformed some commonly used approaches.


2020 ◽  
Vol 34 (6) ◽  
pp. 04020111
Author(s):  
Xiangchun Xu ◽  
Songyu Liu ◽  
Liyuan Tong ◽  
Hongjiang Li

Author(s):  
Б.А. Попов ◽  
Н.Б. Хахулина

Постановка задачи. Для контроля устойчивости и стабильности работы антенно-мачтовых со- оружений периодически проводится их техническое освидетельствование, которое включает ви- зуальное натурное обследование и инструментальный контроль. При измерениях, выполняемых на опорах сотовой связи, появляется ряд особенностей и проблем, поэтому использование тра- диционных методик не всегда представляется возможным и необходима разработка других спо- собов. Результаты и выводы. Методика, предложенная в работе, предполагает измерения без закреп- ленных пунктов съемочного обоснования с помощью специальной марки по разработанной техно- логии и включает: измерения вертикальности ствола, прямолинейности поясов и определения оса- док фундаментов. Данная методика измерений и программа их обработки были проврены более чем на 500 объектах разными исполнителями. Во всех случаях была получена высокая сходимость результатов, а время наблюдений на объекте не превысило 40 минут. Statement of the problem. In order to control the stability of antenna mast structures, their technical inspection is routinely carried out which includes visual field inspection and instrumental control. When measurements are performed on mobile phone poles, a number of features and problems emerge, so the use of traditional methods is not always possible and it is necessary to develop other methods. Results and conclusions. The method proposed in this work involves measurements without fixed points of survey justification using a special stamp based on the developed technology and includes: measurements of the verticality of the trunk, straightness of the belts and determining the sediment of foundations. This method of measurement and the program of their processing were developed on more than 500 objects by different performers. In all cases, high convergence of results was obtained, and the observation time at the site did not exceed 40 minutes.


Author(s):  
Robert Albrecht ◽  
Rhys-Sheffer Birthwright ◽  
John Calame ◽  
Justin Cloutier ◽  
Michael Gragg

Abstract The Papua New Guinea Liquefied Natural Gas (PNG LNG) project is a joint venture with participation by ExxonMobil, Oil Search Limited (OSL), Kumul Petroleum, Santos, JX Nippon Oil and Gas Exploration and Mineral Resources Development Company, and began production in 2014. As described in a previous IPC paper, the project, operated by ExxonMobil PNG Limited (EMPNG) sustained a M7.5 earthquake and approximately 300 aftershocks in 2018, epicentered directly under key facilities. Around 150 km of high-pressure gas and condensate pipelines in the rugged PNG highlands were affected but did not lose containment or pressure. Immediately following the M7.5 event, EMPNG began efforts to assess and inspect the pipelines in order to ensure public safety, and, at the appropriate time, restore LNG production. The technical efforts took place along the pipeline Right of Way (ROW) in a remote jungle environment, which, following the earthquake, was also a disaster zone in which the few available resources were prioritized towards humanitarian relief. Due to resource constraints, the pipeline field inspection team typically numbered only two or three specialists. The inspection team drew heavily on analysis work, ongoing since project startup in 2014 and in progress when the earthquake occurred, that simulated the condition of the ROW and pipe stress state following earthquake events similar in magnitude to what actually occurred. The body of existing analysis work allowed the field team to compare aerially observed ROW ground movements to previously modeled cases, and rapidly infer pipe stress state without actually measuring pipe deformation on the ground. Due to resource constraints, that latter activity, if required before startup, would have significantly delayed project restart. The worldwide network of technical resources that had been assisting with ongoing simulations was quickly re-directed to analyzing actual observed ground deformations, efficiently supporting the small field team from outside the disaster zone. After restart, field inspection activities continued, observations were categorized, and an Earthquake Recovery (EQR) organization was initiated to execute ROW repairs. Just as the initial inspection work was aided by pre-earthquake analyses, EQR activities have been expedited by the extensive ROW maintenance program that had been ongoing prior to the earthquake. This paper and accompanying oral presentation present details of the inspection and recovery, and show that the extensive simulations, preparations and maintenance programs supported by EMPNG during project operations prior to the earthquake enabled a rapid and efficient response when the earthquake actually occurred, and thus provided enormous value to the business.


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