Office for Nuclear Regulation

Dounreay - LC4 compliance inspection and IIS 100 series inspection activities

Executive summary

Purpose of Intervention

The purpose of this intervention was to undertake a Licence Condition (LC) compliance inspection and to conduct a number of other inspection activities at Dounreay Site Restoration Limited (DSRL) in accordance with the 2018/19 Integrated Intervention Strategy (IIS) for Dounreay to confirm that the licensee is controlling its hazards and complying with its statutory obligations.

Interventions Carried Out by ONR

The purpose of this inspection was to conduct an inspection of DSRL’s arrangements against the requirements of LC4 [Restrictions on nuclear matter on the site] and the implementation of those arrangements across site. Specifically:

This intervention provided the opportunity to undertake a number of other activities, specifically:

Explanation of Judgement if Safety System Not Judged to be Adequate

Not applicable.

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

For LC4 we focused on the arrangements in place to manage the irradiated fuel holdings within the reactors, FCA and fuels directorate.  There is clear evidence of adequate management systems in place for managing the inventory within each of the areas.  We considered that each of the areas inspected demonstrated a good understanding of their material inventory, with records that clearly track the history of all material received, the material type, condition and quantities, any processing that may have been undertaken, where and how stored and, its eventual consignment where appropriate.   

Overall we considered that the arrangements in place reflected relevant good practice and met the requirements of LC4.

In the other areas examined:

Conclusion of Intervention

Overall, we consider that the arrangements and their associated implementation for LC4 for the areas inspected met with the required standards; we are also satisfied that the site is making adequate progress in addressing matters raised in previous inspections.  We did not identify any matter impacting on nuclear safety that required any further immediate regulatory action.