Office for Nuclear Regulation

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Heysham 2 Power Station - Licence Condition Compliance Inspection of LC36 and R8 Outage - Rapid Trending Review

Executive summary

Purpose of intervention

The purpose of this intervention was to undertake a Licence Condition (LC) compliance inspection at EDF Energy Nuclear Generation Limited (NGL) Heysham 2 Power Station in line with the planned inspection programme contained in the Heysham 2 Integrated Intervention Strategy (IIS) for 2016/17.

Interventions Carried Out by ONR

This report details the outcome of an LC36 compliance inspection on “Organisational Capability” which was undertaken by an ONR specialist inspector using ONR guidance document NS-TAST-GD-048 [Organisational Capability] and NS-TAST-GD-65 [Function and Content of the Nuclear Baseline]. This compliance inspection was designed to complement a Rapid Tending Review (RTR) being undertaken by EDF's internal regulator (Independent Nuclear Assurance, INA) and focused on the Station's outage organisation and management of worker fatigue.

I, the ONR nominated site inspector, undertook an inspection of NGL's process for undertaking a Rapid Trending Review (RTR) on statutory outages and focused on the implementation of the RTR procedures through my observation of several team members involved in the RTR.

The INA intervention does not fall within the remit of Licence Condition compliance inspections.

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

Not applicable: No safety system inspection was undertaken during this intervention.

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

The LC36 inspection examined implementation of the station's arrangements in relation to the outage organisation.

Based upon the evidence sampled during this inspection, I consider that the station demonstrated that:

Based on my sampled inspection, I judged that the implementation of the arrangements for LC36 reflect relevant good practice and have rated this intervention as Green.

I found that the RTR is an effective means to identify a range of good practice and emergent safety issues, both conventional and nuclear, and therefore, the undertaking of this process early within the outage provides the Station with the opportunity to act upon the findings made. I therefore consider that the requirements as identified within NGL's arrangements for RTR's have been met. The inspection of INA is not subject to scoring as part of the IIS; however, I have judge the performance of INA in undertaking the RTR for Heysham 2 Green.

Conclusion of Intervention

Overall, I consider that the arrangements and their associated implementation for LC36 for the sample undertaken met with the required standards; I have therefore rated this inspection as Green.

I conclude that the performance of INA in undertaking the RTR at Heysham 2 for the Reactor 8 outage was wide-ranging and comprehensive, meeting expectations that are outlined within NGL's compliance procedures.

There are no findings from this inspection that could significantly undermine nuclear safety nor require a change to the planned interventions and inspections of Heysham 2.