The purpose of this intervention was to carry out a licence compliance inspection and attend meetings 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 2015/16.
The nominated site inspector carried out a planned Licence Condition (LC) 21 compliance inspection and undertook a review of the ONR issues relevant to Heysham 1.
The ONR delivery lead for operating reactors, the nominated site inspector and the ONR project inspector also attended the Reactor 2 start-up meeting for the statutory outage.
No safety system inspection was undertaken, hence this is not applicable.
The company arrangements for LC21 compliance is split into new plant and existing plant. The arrangements for new plant were judged to be adequate, however the arrangements for commissioning of existing plant were judged to be below standard. This was due to the fact that not sufficient guidance on commissioning is given for existing plant and it is left to the individuals to judge what is appropriate. Since the LC21 arrangements are corporate documents, an action has been raised on EDF Corporate to revise the current procedures to ensure sufficient guidance is given to ensure compliance with LC21.
I also reviewed implementation of the LC21 arrangements for new plant against the recent commissioning of the Reactor Vessel Flood Detection System (RVFDS). This led to two further actions relating to the role of the Project Safety Review Group (PSRG) and confirmation of their approval of the commissioning for the RVFDS.
At the review of the ONR issues meeting, it was agreed that the new approach of the station providing regular quarterly updates to the site inspector was working well and should continue.
No major issues were raised at the reactor 2 start-up meeting although a number of actions were raised for the station to provide status updates on a number of items of plant equipment.
The intervention was performed in line with ONR’s guidance requirements (as described in our technical inspection guides) in the areas inspected.
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 actions 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.