Office for Nuclear Regulation

Category: Dungeness ‘B’ – EDF Energy Nuclear Generation Ltd

Dungeness B – Inspection ID: 52546

October 13, 2023 - Executive summary Date(s) of inspection: July 2023 Aim of inspection The aim of the inspection is to determine whether DNB is exercising appropriate control, oversight and assurance of onsite contractors delivering nuclear safety related good or services. Subject(s) of inspection Health & Safety at Work Act – Rating: Cancelled LC17 – Management systems – Rating: […]


Chief Nuclear Inspector publishes annual review of industry performance

September 27, 2023 - Conventional health and safety and cyber security highlighted


Dungeness B – Inspection ID: 52550

August 14, 2023 - Executive summary Date(s) of inspection: June 2023 Aim of inspection The aim of this unannounced inspection was to confirm that DNB is ensuring that appropriate operational records are being made. Subject(s) of inspection LC 25 – Operational records – Rating: GREEN Key findings, inspector’s opinions and reasons for judgement made In accordance with the Office […]


Dungeness B – Inspection ID: 52477

August 14, 2023 - Executive summary Date(s) of inspection: June 2023 Aim of inspection The aim of the inspection was to ensure that DNB is exercising appropriate control and supervision of defueling operations focusing on central control room standards. Subject(s) of inspection LC 26 – Control and supervision of operations – Rating: GREEN Key findings, inspector’s opinions and reasons […]


Site Stakeholder Group (SSG) reports for Q2 – 2023

August 1, 2023 -


Dungeness B – Inspection ID: 51738

June 27, 2023 - Executive summary Date(s) of inspection: October 2022 Aim of inspection Intervention to confirm that no operations are carried out which may affect safety except under the control and supervision of suitably qualified and experienced persons appointed for that purpose by the licensee. The intervention will be achieved by sampling nuclear safety significant work pack/s (and the work […]


Dungeness B – Inspection ID: 52455

June 27, 2023 - Executive summary Date(s) of inspection: April 2023 Aim of inspection Observation of the annual level 1 demonstration exercise to confirm that Dungeness B’s emergency arrangements remain effective. Subject(s) of inspection LC11 – Emergency arrangements – Rating: GREEN Key findings, inspector’s opinions and reasons for judgement made ONR observed and assessed the level 1 emergency exercise […]


Dungeness B – Inspection ID: 51764

June 20, 2023 - Executive summary Date(s) of inspection: March 2023 Aim of inspection System based inspections (SBIs) are an essential element of ONR’s overall intervention on a nuclear site, and consist of a series of inspections which are intended to establish that the basic elements of a site/facility safety case (as implemented in Safety Systems, Structures and Components […]


EDF and Trillium Flow Services UK Ltd comply with improvement notices

June 19, 2023 - Notice compliance following incident at Dungeness B


Dungeness B – Inspection ID: 51743

May 16, 2023 - Executive summary Date(s) of inspection: December 2022 Aim of inspection In accordance with the Office for Nuclear Regulation’s (ONR’s) Dungeness B (DNB) intervention plan, ONR performs a series of planned compliance inspections of identified licence conditions (LCs) and other applicable legislation, to ensure that DNB is meeting its legal requirements. LC28 requires that “the licensee […]