Office for Nuclear Regulation

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Heysham 1 compliance inspection

Executive summary

Purpose of intervention

The purpose of this intervention was to carry out licence compliance inspections at the EDF Energy Nuclear Generation Limited's (NGL's) Heysham 1 power station in line with the planned inspection programme contained in the Heysham 1 Integrated Intervention Strategy (IIS) for 2016/17.

Interventions Carried Out by ONR

The nominated site inspector and a specialist inspector carried out a planned Licence Condition (LC) compliance inspection against LC17 - management systems. The nominated site inspector also carried out a planned LC compliance inspection against LC25 - operational records and observed some of the plant modifications associated with the proposed 7/8 mode of operation

Explanation of Judgement if Safety System Not Judged to be Adequate

No safety system inspection was undertaken, hence this is not applicable.

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

The LC17 inspection was focussed on the specifications produced for procurement of plant items from external supply chains. Prior to this inspection, a review of the company LC17 procedures for acquiring goods and services was undertaken against the relevant ONR guidance document for supply chain management arrangements for the procurement of nuclear safety related items or service. These arrangements were deemed to meet the required standard for compliance with this aspect of LC17.

It was noted that the company had recently updated its procurement procedures to improve their usability and improve the standard of specifications. Therefore to judge the adequacy of the implementation of these arrangements we sampled a number of Contract Enquiry Technical Specification (CETS) both pre and post the revised LC17 arrangements.

The inspection did not revealed any major shortcomings in either the historical procurement specifications or the more recent procurements produced in line with the revised procedures. A minor issue was raised in relation to the role of the goods or service specifier as this was not designated a specific role on the station role profiles. This has been recorded on the ONR issues database and will be pursued as part of normal business by the nominated site inspector.

Overall the procurement process documentation and its implementation was considered to meet the required standard for this aspect of LC17 compliance and therefore an intervention rating of green was assigned to the arrangements for Contract Enquiry Technical Specifications.

The main focus of the LC25 compliance inspection was to review the improvements made previously to address the issues raised during the last LC25 compliance inspection undertaken in September 2014. In addition I reviewed the proposed actions being undertaken by the station to improve the quality of the information recorded on the station maintenance records.

Since the last LC25 compliance inspection the station has produced a comprehensive list of the operational records stored on the site along with their location. In addition improvements have been made to the main record store along with proposals to convert an existing building into another dedicated record store.

The station has also put in place some additional measures to improve the quality of the information recorded on the station maintenance records. These include additional checks as well as directed reinforcement of the expected standards through a dedicated presentation targeted at those producing operational records. The impact of these measures will be monitored by the nominated site inspector as part of normal business.

Overall the LC25 arrangements and subsequent implementation was considered to meet the required standard for LC25 compliance with an intervention rating of green.

I observed the preparation work associated with the cutting of the steam pipework to support the proposed 7/8 mode of operation. Following a review of the quality plan and discussions with the engineers I considered that the work was well prepared and supervised and that there was good knowledge of the hazards associated with this work.

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, I do not consider there to be any matters that have the potential to impact significantly on nuclear safety.

At present, no additional regulatory action is needed over and above the planned interventions of Heysham 1 power station as set out in the Integrated Intervention Strategy, which will continue as planned.