Office for Nuclear Regulation

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Hinkley Point B Power Station - Reactor 3 Outage - Electrical Related Activites

Executive summary

Purpose of intervention

This report covers the nuclear safety-related inspection of Hinkley Point B power station, which was undertaken as part of a series of planned interventions of the Reactor 3 (R3) periodic shutdown.

Interventions Carried Out by ONR

The inspection considered the electrical work being undertaken as part of the R3 periodic shutdown, including the planned work from the Outage Intentions Document (OID) and any emergent work in this area.

This intervention was an inspection assessing the licensee’s progress in the implementation of Licence Condition 28 arrangements for R3 electrical outage activities.

Explanation of Judgement if Safety System Not Judged to be Adequate

The current inspection was not a safety system inspection, and therefore this section is not applicable.

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

An inspection of R3 outage related electrical activities was carried out as part of the programme of outage related safety inspections included on the Hinkley Point B site intervention plan for 2015/16 to confirm that the planned examination, maintenance, inspection, test and modification activities, are undertaken during the outage period.

During the course of the inspection it was found that station is maintaining its electrical plant and equipment in accordance with its arrangements, on the basis of the areas sampled by the inspection. 

In summary, the overall outcome from the safety inspection of the outage related electrical activities of R3 is that implementation of the LC 28 arrangements for the electrical equipment is deemed to be adequate and an inspection rating of 3 was awarded to these activities.

Conclusion of Intervention

From the information gathered and evidence obtained during this intervention, no matters have been identified that are likely to have a significant impact on nuclear safety on the station at this time. Therefore, no additional regulatory action arising from this visit is currently considered to be necessary.

The overall outcome from the inspection is that no electrical issues have been identified from this work that should affect the return to service of R3, on completion of the planned and emergent work.