Office for Nuclear Regulation

Planned Compliance Inspection at Heysham 1

Executive summary

Purpose of intervention

The purpose of this intervention was to carry out licence compliance inspections at 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 2015/16.

Interventions Carried Out by ONR

The ONR nominated site inspector and an ONR specialist inspector carried out compliance inspections jointly with the Environment Agency inspector against the following Licence Conditions (LCs):

The site inspector also reviewed NGL’s progress with a number of previous issues relating to LC10 – Training.

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

NGL are making adequate progress towards the characterisation and retrieval of the bypass blowdown filters.  There is continued focus on managing the legacy wastes within the facilities; however, further work is required to effectively manage the inventory of legacy wastes.  On this basis compliance with LC32 was judged below standard with an IIS rating of 4.  In order to address these shortcomings a number of actions have been raised on the Licensee and these will be monitored by ONR as part of normal business.  

Based on the evidence sample, NGL have continued to progress the drum store water ingress and it is judged that compliance with LC34 is adequate with an IIS rating of 3.

NGL has made significant progress with the shortfalls identified during a previous LC10 compliance inspection which will enable 2 of the 3 issues to be closed.  Further information to close the final issue will be provided by the end of September 2015.

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.    The issues raised will be pursued as part of normal business.

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.