Office for Nuclear Regulation

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Harwell site – Research Sites Restoration Ltd (RSRL) – Harwell – Planned Intervention

Executive summary

Purpose of intervention

This was a planned inspection at Research Sites Restoration Ltd’s (RSRL’s) Harwell site, undertaken as part of the planned intervention strategy for the Harwell site for 2014/15.

Interventions Carried Out by ONR

In relation to Licence Condition 34 (LC34) “leakage and escape of radioactive material and radioactive waste” I (nominated site inspector) considered two topics.  The first was RSRL’s LC34 compliance arrangements whilst the second was implementation of these at the B462 Complex.  I selected these topics since I was not familiar with RSRL’s LC34 arrangements and an ONR System Based Inspection (SBI), which includes consideration of LC34, is planned at the B462 Complex in January 2015.

I undertook a routine review of the ONR issues database with RSRL.

I attended a Site Stakeholder Group (SSG) meeting.

I undertook planned information gathering, including an emergency arrangements review meeting and a meeting with the RSRL internal regulator.

Explanation of Judgement if Safety System Not Judged to be Adequate

Not applicable.

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

In relation to LC34, I noted that RSRL had already identified during a review that some additional existing Management System documents should be referenced in their LC34 arrangements.  Since this had been identified by RSRL, I did not raise an ONR issue.  I noted that radiochemical analysis of groundwater on the site was undertaken, but that this was not currently part of RSRL’s LC34 arrangements.  I raised an ONR issue relating to this.  I sampled implementation of RSRL’s LC34 arrangements at Interim Store B462.26.  I concluded that LC34 considerations had been taken into account in the design and operation of this Interim Store and that an adequate groundwater monitoring programme was in place.  Taking all these factors into account I assigned an Integrated Intervention Strategy (IIS) rating of 3 (adequate) to LC34.

In relation to the other activities undertaken in this intervention, no key findings arose.

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

Conclusion of Intervention

From the evidence gathered during this intervention, no matters have been identified that are likely to have a significant impact on nuclear safety on the site at this time.  Therefore, no additional regulator action arising from this visit is considered necessary at this time.