Office for Nuclear Regulation

Heysham 2 - LC 7 and LC 14 compliance inspections

Executive summary

Purpose of Intervention

The purpose of this intervention was to undertake compliance inspection activities at EDF Energy Nuclear Generation Limited’s Heysham 2 power station in line with the ONR’s inspection programme contained in the Integrated Intervention Strategy (IIS) for 2018/19.

Interventions Carried Out by ONR

In my capacity of nominated site inspector for Heysham 2 Power Station, I performed an inspection to evaluate compliance with the following nuclear site licence conditions (LCs), which are applicable provisions of the Energy Act 2013:

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

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

Licence Condition 7 - I undertook an inspection to judge compliance against site licence condition 7 focused on the licensee’s organisational learning process. During the inspection, I observed an event screening meeting, reviewed the categorisation of more than fifty events classified as 28B (not reportable to ONR), and held discussions with Corrective Action Plan co-ordinator,  lead investigators and investigation report authors.

Based on the sample reviewed, I am satisfied that the licensee’s arrangements for screening, investigating and reporting of events broadly met ONR’s expectations. I did, however, identify some minor discrepancies in the categorisation of three events. I have raised an ONR regulatory issue to record and monitor progress. Overall, I judge that the standard of compliance was consistent with relevant good practice and award an inspection rating of Green for compliance against LC7.

Licence Condition 14 - I undertook an inspection to judge compliance against site licence condition 14 focused on the licensee’s safety case management arrangements. During the inspection, I sampled the high level station arrangements, the reference safety case statement, sampled an interim justification for continued operation and the safety case anomalies process. I also held discussions with the Nuclear Safety Group team in relation to the available resources, knowledge and experience of the team and sampled their training records.

Based on the sample reviewed, II am satisfied that the licensee’s safety documentation is fit for purpose. The safety case anomalies process is adequate and is being complied with. I am also satisfied that the station safety case team is adequately resourced and are in ticket for essential training requirements. The safety case health review is comprehensive and has identified a large number of worthwhile safety improvements. I did, however, observe that more effort is required to prioritise and identify a clear plan for the timely implementation of these improvements. I have raised a regulatory issue to record these findings and to monitor progress.

Conclusion of Intervention

There are no findings from this inspection that could significantly undermine nuclear safety.  At present, no additional regulatory action is needed over and above the planned interventions at Heysham 2 Power Station.