Office for Nuclear Regulation

Hartlepool R2 2019 Outage - Mechanical Engineering inspection

Executive summary

Purpose of Intervention

The purpose of this intervention was to carry out a licence compliance inspection at EDF Energy Nuclear Generation Limited’s Hinkley Point B power station in line with the planned inspection programme contained in the Hartlepool Integrated intervention Strategy for 2018/19.

Interventions Carried Out by ONR

ONR inspectors carried out inspections against the requirements of Licence Condition 28: examination, inspection, maintenance and testing, to inform the ONR decision relating to the issue of a licence instrument for consent for return to service of Hartlepool Reactor 2 following its periodic shutdown.  The activities examined were selected due to their nuclear safety significance.

The intervention included:

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

Based on my sampling, I am satisfied from a mechanical engineering perspective that during the Hartlepool Reactor 2 2019 periodic shutdown:

Following my review of further evidence provided by the Licensee post inspection, I am satisfied that during the Hartlepool Reactor 2 2019 periodic shutdown:

Conclusion of Intervention

Due to the absence of information on the day of the inspection, I consider that NGL could not demonstrate that the maintenance of the gas circulators was being adequately performed and controlled. However, following additional evidence provided by NGL post inspection, I am satisfied that the LC 28 arrangements sampled for this outage were adequate and adequately implemented. I therefore consider that a rating of GREEN was appropriate for this outage intervention.

I therefore support a request under Licence Condition 30 to return Hartlepool Reactor 2 to operation following its 2019 periodic shutdown.