Office for Nuclear Regulation

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Sizewell B - LC Compliance Inspection

Executive summary

Purpose of Intervention

The purpose of this intervention was to undertake licence condition (LC) compliance inspections at EDF Energy Nuclear Generation Limited’s (NGL) Sizewell B Power Station, in line with the ONR’s Operational Facilities Division intervention strategy. The intervention was carried out by the ONR site inspector, supported by a number of specialist ONR inspectors.  

Interventions Carried Out by ONR

The intervention was aimed at evaluating the control of Reactor Coolant System (RCS) and main feedwater chemistry at Sizewell B. The inspection team also conducted an intervention to examine organisational learning at Sizewell B, focusing on the station’s response to lessons learned following to a fall from height at Hinkley Point B power station last year and an evaluation of the quality of internal investigations undertaken by the licensee to identify causes of incidents initiated in reports undertaken. During these interventions, inspections were performed against the following Licence Conditions (LC) 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.

Explanation of Judgement if Safety System Not Judged to be Adequate

Not applicable during this intervention.

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

Conclusion of Intervention

There are no findings from this inspection that could significantly undermine nuclear safety.  No change is necessary to the planned interventions and inspections for 2018-19 at SZB as a result.