Mobile 3D Laser Scanning for Nuclear Safeguards

3D laser scanning is an established verification technology in nuclear safeguards, applied inter alia for Design Information/Basic Technical Characteristics Verification (DIV/BTC) and change monitoring in nuclear facilities. Current systems are based on high-accuracy, high-resolution 3D laser scanners which require one minute or more to acquire a single scan. Therefore, the scanners need to be immobile during data acquisition. In order to cover the complete scene, several scans are acquired in a so-called ‘stop-and-go’ mode, which are then registered into a single coordinate frame in an offline post-processing phase. Recently, new 3D laser scanners with a significantly increased acquisition speed have emerged. They acquire 3D scans at a frame rate of 10Hz and more - at the cost of reduced accuracy and resolution – and thus enable the scanner to be mobile during acquisition, i.e. the data can be acquired while walking or driving. Mobile laser scanning can significantly increase the efficiency of existing safeguards applications for 3D laser scanning, i.e. DIV/BTC and change monitoring. Furthermore, by registering each scan with a reference model (which can either be generated a priori or while scanning), it is possible to compute the current position and track the movement of the scanner. Hence, mobile laser scanning with real-time data processing provides indoor positioning capability to nuclear inspectors during their field work. It enables all observations and measurements to be connected with their respective location and time stamps and to retrieve location-based information as required. The paper presents the Mobile Laser Scanning Platform (MLSP) developed at the JRC, which consists of a commercial mobile scanner, the processing unit and the proprietary software for real-time processing and visualization. The system will be illustrated using two test cases: a DIV/BTC scenario for the future Finnish underground repository (ONKALO) and indoor localization.

WOLFART Erik;  CERIANI Simone;  PUIG ALCORIZA David;  SANCHEZ BELENGUER Carlos;  TADDEI Pierluigi;  SEQUEIRA Vitor;  MURTEZI M.;  TURZAK Peter;  ZEIN A.;  ENKHJIN Luvsantseren;  INGEGNENI M.;  ROCCHI Simone;  YUDIN Y.; 

2017-01-16

Publications Office of the European Union

JRC104573

1977-5296,   

https://esarda.jrc.ec.europa.eu/images/Bulletin/Files/B_2015_053.pdf,    https://publications.jrc.ec.europa.eu/repository/handle/JRC104573,