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Remote manipulations / diagnostics in radioactive areas and handling of radioactive material Workshop
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Europe/Zurich
30/7-018 - Kjell Johnsen Auditorium (CERN)
Helmut Burkhardt
(CERN),
Hermann Schmickler
(CERN),
Isabel Bejar Alonso
(CERN)
Description
The aim of this workshop is to create a CERN wide survey of all needs in the mentioned domain and in addition collect the information on technical solutions, which have been put in place or which people intend to develop.
The first and obvious result of the workshop will be to spread the information to all concerned parties, such that people with a specific need might already find a solution produced somewhere else.
In addition the workshop participants will discuss an executive summary aiming at a recommendation whether the present technical effort for solutions is well organized or whether by creating a CERN wide project the efforts could be made more efficient.
The HiLumi LHC Design Study is included in the High Luminosity LHC project and is partly funded by the European Commission within the Framework Programme 7 Capacities Specific Programme, Grant Agreement 284404
Participants
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Present and future status of radiactive zones. Handling and diagnostic problems 30/7-018 - Kjell Johnsen Auditorium
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HL: CONSOLIDATING AND UPGRADING THE LHCThe LHC requires a number of measures and interventions that will enable it to run continuously at its maximum performance with reasonable availability. The interventions and equipment replacement will be designed to improve when possible peak performance and machine availability, which both concurs to integrated luminosity, and to increase flexibility and ease of repair and maintenance, an important objective for a machine operating at three times the beam intensity so far used and 50 to 100 times the luminosity integrated so far. Some of the equipment and systems that will need the pushed consolidation include the magnets in the insertions, the cryogenics and the collimation. To those it is necessary to add the ones that will be needed to upgrade the performance of the LHC. During the presentation the zones and systems concerned will be briefly described.Speaker: Prof. Lucio Rossi (CERN)
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An overview of PURESAFE outcomesPURESAFE is a EU funded project (Marie Curie Actions Initial Training Network) coordinated by Tampere University of Technology for which CERN is one of the eight partners. Through 15 applied research projects, this training network aims to develop means—systems engineering processes, telerobotic hardware and software solutions—to prevent or optimise human intervention in scientific facilities emitting ionizing radiation. Particular emphasis is placed on the need to consider RAMS (reliability, availability, maintainability and safety) issues to get the best from telerobotic solutions, as well as the importance of telerobotic system development being fully integrated with the design and evolution of the facilities they are aimed for—preferably from the very beginning. The presentation will outline the problems typically encountered when telerobotic systems are considered for radiation environments and give a brief overview of the development work underway within the PURESAFE applied research projects.Speakers: Keith Kershaw (CERN), Pierre Bonnal (CERN)
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ROBOTIC INTERVENTIONS: THE PERSPECTIVE OF THE USERSThe EN/STI group started some years ago to look into remote handling solutions for interventions in several target and collimator areas. In the present talk, an overview of the motivation and of the investigations for what is available on the market are presented, together with an outline of the good and bad surprises we went through during this exercise. A long term strategy has been developed in collaboration with EN/HE to ensure in a few years from now that dose to personnel remain at a sustainable level while intervening in the hottest areas of the CERN complex.Speaker: Roberto Losito (CERN)
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10:10
Break 30/7-018 - Kjell Johnsen Auditorium
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Planning operation in radioactive areas. Designing to operate in radioactive areas 30/7-018 - Kjell Johnsen Auditorium
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AUGMENTED REALITY IN ATLAS PRESENT AND PROSPECTIVESThe increase of the environmental doses in the coming years will directly impact the personnel safety and the conditions of access and work inside the experiments . In order to guaranty the highest level of safety for the intervening personnel for the future shutdowns, the ATLAS technical coordination safety group is developing an upgrade safety program running in several complementary directions. The first phase of the program, already achieved, is the development the ATWPSS, the ATLAS Wireless Personal Supervision and Safety system which enable a remote supervision of the workers (doses, safety parameters), and an audio and video control of the activity. In a second step, this system will be upgraded by sending information to the worker (environmental dose rates, working procedures, etc..). These information will be displayed first virtually and then using the most advanced Augmented Reality technologies, via the EDUSAFE ITN Marie Curie program. Finally Remote Handling systems will be required in order to replace our personnel in places where the doses exceed the acceptable limits.Speaker: Olga Beltramello (CERN)
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VISUALISATION TOOL FOR OPTIMISATION OF RADIATION AREA INTERVENTIONSA visualisation tool and methodology to help optimise interventions in radiation areas at CERN is currently being developed within EN-HE in collaboration with DGS-RP as part of the EU-funded PURESAFE Marie Curie Initial Training Network. The tool aims to merge radiation maps from FLUKA simulations and radiation measurement results with 3-D integration models such as CATIA, providing on-screen visualisation of dose rates and allowing 3-D simulations of interventions in complex radiation environments. A key benefit foreseen is the facilitation of communication during the optimisation process between staff responsible for accelerator equipment operation, radiation protection staff and designers. The presentation will introduce the software tool then illustrate its use in the optimisation of the design of the LINAC 4 dump shielding.Speaker: Thomas Fabry (CERN)
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ISOLDE ROBOTA project is currently underway to provide a new robot system to handle radioactive targets in the ISOLDE target area. EN-HE in collaboration with EN-STI and EN-ICE will provide a turn-key system including maintenance and support to the ISOLDE operations team. Key aims for the new system are to reduce radiation dose to personnel during operation and installation of the system, as well as to increase available operation time for ISOLDE. The presentation will describe the project approach followed including radiological and risk analysis; 3-D CAD integration and trajectory simulation; robot modification for radiation tolerance; mock-up trials; installation and commissioning.Speaker: Jean-Louis Grenard (CERN)
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REMOTELY OPERATED COLLIMATOR EXCHANGE VEHICLEAfter LS1, radiation levels in collimation areas (mainly IR3 and IR7) will rise to levels that will require long decay times before interventions by humans. Collimators have been designed not to be serviced in situ but rather to be easily exchangeable, therefore in case of serious issues with a collimator the LHC will be stopped for the replacement of the faulty collimator. In accordance with the ALARA principle, remote techniques will be used by EN-HE in collaboration with EN-STI to exchange collimators with the benefits of reduced radiation exposure of personnel and increased LHC availability. The presentation will describe one of the projects in the scope of this work - the specification, design and construction of a custom-built remotely operated crane-vehicle to remotely handle and transport collimators in the LHC tunnel. The vehicle itself and the organisation of its operation will be presented.Speaker: Jean-Louis Grenard (CERN)
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12:20
Lunch
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Existing solutions on Remote manipulations / diagnostics in radioactive areas and handling of radioactive material 30/7-018 - Kjell Johnsen Auditorium
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A REMOTELY OPERATED MEASUREMENT AND INSPECTION TRAIN: TIMA remotely operated measurement and inspection train, ‘TIM,” has been developed by EN-HE for use in the LHC tunnel. The train runs underneath the monorail I-beam suspended from the tunnel ceiling; it can carry out remote visual inspections with pan-tilt-zoom cameras and remote measurements of radiation levels, temperature and oxygen concentrations along the tunnel. Work is currently underway by EN-HE in collaboration with EN-ICE to pass from the prototype phase to a fully integrated service for LHC operation. The presentation will describe the train, its capabilities and operation.Speaker: Bruno Feral (CERN)
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REMOTE OVERHEAD TRAVELLING CRANE OPERATION & XTAX TABLE REPAIR: A LARGE-SCALE & REMOTE-CONTROLLED EXERCISE @ CERNRemote techniques have been applied to some existing overhead travelling cranes in experimental areas in order to reduce radiation doses to personnel during decommissioning and repair operations. The presentation will describe the work carried out by EN-HE in collaboration with EN-MEF and EN-STI for two cases (dismantling of a redundant facility and repair of heavy radioactive assemblies) - giving details of crane modifications, vision system arrangements, handling equipment design, operational procedures, and the resulting personnel radiation dose reductions. The presentation will be completed by the example othe XTAX table repair In 2012 a large-scale worksite took place in TCC2, a high radiation area at the CERN SPS. The objective was to repair 12 XTAX tables which play a key role in the safe and effective operation of the North experimental areas. In order to optimize the work procedures and reduce the collective dose received by the teams, remote controlled devices have been designed and manufactured purposely for this task. The paper describes the challenging situations encountered and the solutions implemented, and summarizes the lessons learnt from this experience, underlining that the handling of radioactive material in a particle accelerator through its entire life cycle must be carefully studied as from the design stage.Speakers: Keith Kershaw (CERN), Sebastien Evrard (CERN)
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REMOTE INSPECTION VEHICLEIn 2012 EN-STI in collaboration with EN-HE purchased a Telemax remotely operated vehicle produced by Telerob GmbH. The vehicle is equipped with a manipulator arm and cameras. It is controlled by an operator via a portable control station. The vehicle was purchased to carry out visual inspection in radioactive areas at CERN along with interventions requiring manipulation tasks such as handling of objects up to 5kg, disassembly tasks, helium leak tests and cleaning. The presentation will include a description of the vehicle and its capabilities followed by examples of interventions already carried out at CERN.Speaker: Ramon Folch (CERN)
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REMOTE SURVEY OPERATIONSSince several years and following the ALARA recommendations, the SU team has developed specific systems to prevent its staff to be exposed to high radioactive doses when measuring the position or realigning some LHC components. Around the low beta quadrupoles, a permanent monitoring system as well as a remote adjustment system have been developed allowing the measurements and the readjustment of these critical magnets from the SU staff offices. Also in the LSS7 of the LHC, the collimators can be surveyed from the surface using a dedicated train, circulating on the monorail, which can measured their positions with respect to the adjacent quadrupoles using the stretched wire and photogrammetric technology. Moreover a new project to measure remotely the position of the LHC components in the arcs is under development using the above mentioned technology as well as modular robotics. The presentation will include the status of the already existing instrumentation as well as the future development and perspectivesSpeaker: Patrick Bestmann (CERN)
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ATLAS VT Sliding Support motorizationThe increasing radiation levels in the ATLAS experiment and hence the radiation dose seen by the personnel during maintenance poses a new challenge to the design of components within highly radiated areas. During opening scenarios and the removal of chambers, the ATLAS VT Sliding Support, among other supports, must be retracted manually by the means of turning threaded bars which are connected to a triangular support system. Limited by the space constraints a possible solution to remotely retract the supports was found in the installation of radiation resistant stepper motors. Once installed these compact motors will allow the movement of the supports without any human intervention in the radiated areas. A design study for the mechanical design was performed and a suitable manufacturer was found. The new system shall be installed in 2014 to ensure that during the higher radiation levels in LS2 this task can be performed remotely.Speakers: Kaan Vatansever (CERN), Pedro Noguera Crespo
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15:30
Break
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REMOTE HANDLING AT JETSpeaker: Mr Oliver Crofts (Culham Centre for Fusion Energy)
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Discussion 30/7-018 - Kjell Johnsen Auditorium
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