Office for Nuclear Regulation

This website uses non-intrusive cookies to improve your user experience. You can visit our cookie privacy page for more information.

Dungeness B (EDF Energy) - Irradiated Fuel Dismantling Facility (SBI 16)

Executive summary

Purpose of Intervention

The purpose of this intervention is to undertake a system based inspection (SBI) of the Irradiated Fuel Dismantling Facility (IFDF) at EDF Energy Nuclear Generation Ltd's (NGL's) Dungeness B nuclear power station. The inspection was conducted in line with the inspection programme contained in the Dungeness B Integrated Intervention Strategy (IIS) for 2017/18.

Interventions Carried Out by ONR


The intervention was conducted by mechanical and structural integrity specialist inspectors. The intervention was conducted to establish that the basic elements of the IFDF safety case as implemented through its Structures, Systems and Components (SSCs) important to safety are fit for purpose and that they fulfil and will continue to fulfil their safety functional requirements. This was undertaken through examination of six LCs:

LOLER Compliance

This intervention was conducted by a mechanical engineering specialist inspector. The intervention was to establish Dungeness B Nuclear Power Stations compliance with the requirements of the LOLER regulations.


The intervention was based on sampling the implementation of the arrangements in place ensuring their adequacy in relation to the IFDF and LOLER compliance.

The intervention was performed in line with ONR’s guidance requirements (as described in our technical inspection guides) in the areas inspected.

Explanation of Judgement if Safety System Not Judged to be Adequate

From our inspection, we judged that overall, the IFDF system met the requirements of the safety case and is adequate.

Key Findings, Inspector's Opinions and Reasons for Judgements Made


LOLER compliance

Conclusion of Intervention

After considering all of the evidence presented by the licensee we concluded that the arrangements and their implementation, associated with the IFDF met the requirements of the safety case and were adequate. An IIS rating of Green is considered to be appropriate for the system based inspection and no regulatory issues were raised.

With respect to the LOLER themed compliance inspection, I consider, after examining the licensees arrangements sampled I concluded that these met the requirements of the LOLER regulations. An IIS rating of Green was considered appropriate for this aspect of the inspection.

There were no findings from the interventions that could significantly undermine nuclear safety.