UKAEA Papers

Showing 11 - 20 of 38 UKAEA Paper Results
2021
UKAEA-RACE-CP(21)02

Sensor technologies will play a key role in the success of Remote Maintenance (RM) systems for future fusion reactors such as ITER and DEMO. Understanding their limitations and suitability for use in a fusion context is crucial to the operation and maintenance of these reactors. In this paper, we evaluate three key types of sensor which are of p…

Preprint Published
2021
UKAEA-RACE-CP(21)01

In order to reach commercially-relevant availability future fusion power plants must have highly efficient maintenance systems. On the other hand, as radiation levels increase so too will the number of maintenance tasks that must be performed without human access.  To meet these conflicting constraints remote maintenance systems must significantly…

Preprint Published
2021
UKAEA-RACE-PR(21)04

Present inspection techniques in place at the Joint European Torus (JET), as well as some of those planned for ITER make use of robotically deployed inspection systems, which typically collect data for offline analysis. This can be a slow, laborious process with subjective or error-prone results. There are significant benefits to be gained through …

Preprint Published
2020
UKAEA-RACE-PR(21)03

DEMO is a key part of the EU fusion roadmap, where the programme is reaching the end of the pre-conceptual phase with a gate review in 2020. As part of the work to complete this phase, eight Key Design Integration Issues (KDII’s) have been identified as critical to the programme. Within KDII#1 (wall protection limiters) the feasibility of the Inn…

Preprint Purchase
The published version of this paper is currently under embargo and will be available on 16/03/2023
2020
UKAEA-RACE-PR(21)02

This article presents and practically validates an identifier-critic-based approximate dynamic programming (ADP) method to online address the optimal tracking control problem for nonlinear continuous-time unknown systems. The imposed assumption on precisely known system dynamics is obviated via a neural network (NN) identifier. A static contro…

Preprint Published
2020
UKAEA-RACE-PR(21)01

Remote handling systems are commonly used for decommissioning and maintenance of hazardous environments, specially in the nuclear sector. The necessity for a more realistic and accurate user interaction with the remote environment has led research towards the usage of immersive technologies such as augmented and virtual reality. In order for thi…

Preprint Published
2020
UKAEA-RACE-CP(20)04

The extreme environmental conditions inside future nuclear fusion power plants will mean that maintenance activities must be performed without human access. Current teleoperation paradigms do not enable sufficiently fast maintenance cycles, and automation is seen as a potential solution. Transitioning to an automated maintenance scheme will requ…

Preprint
2020
UKAEA-CCFE-PR(20)133

Future experimental scientific facilities, energy generation assets, and nuclear decommissioning facilities will require increasing levels of remote maintenance, which must be facilitated by robotic systems. Moreover, these long-lived (30+ years) maintenance systems will, themselves need to maintained and upgraded in order to deal with lifespan …

Preprint
2020
UKAEA-RACE-CP(20)03

Research into remote sensing tools for environmentalmonitoring is an essential aspect for ensuring a healthy anthriving biosphere under the canopy, but also for preventingforest-related hazards from occurring. The challenges associatedwith forestry robotics are posed by the environment itself, asforests are wide-spread areas with a high density …

Preprint Published
2020
UKAEA-RACE-PR(20)01

The DEMO remote maintenance system (RMS) will have a significant role in keeping the power plant operational, and therefore, would have a large impact on its economic feasibility. The identification of impending mechanical failures of the RMS equipment during active maintenance operations is crucial if unscheduled and or unplanned recovery and resc…

Published