The purpose of this intervention was to carry out licence compliance inspections at EDF Energy Nuclear Generation Limited’s Dungeness B power station in line with the planned inspection programme contained in the Dungeness B Integrated intervention Strategy for 2018/19.
ONR inspectors carried out inspections against the requirements of Licence Condition 28, Examination, Inspection, Maintenance and Testing to inform the ONR decision relating to the issue of a licence instrument for consent for return to service of Dungeness B Reactor 22 following its periodic shutdown. The activities examined were selected due to their nuclear safety significance.
The intervention included examination, inspection, maintenance and testing of:
The intervention was supported by walk-downs of associated maintenance facilities/areas.
The intervention was performed in line with ONR's guidance requirements (as described in our technical inspection guides) in the areas inspected.
As part of this intervention we also viewed the installation works associated with the Automatic Boiler Depressurisation System (ABDS) which forms part of the ongoing Plant Life Extension Modifications (PLEX).
Based on my sampling, I am satisfied from a mechanical engineering perspective that during the Dungeness B Reactor 22 2018 periodic shutdown:
Based on my sampling undertaken as part of this intervention, I am satisfied that the Licence Condition 28 arrangements in place are adequate and have been adequately implemented with no significant shortfalls. I have therefore given this inspection an Integrated Intervention Strategy rating of Green.
I would therefore support a request under Licence Condition 28 to return Dungeness B Reactor 22 to operation following its 2018 periodic shutdown.