Office for Nuclear Regulation

Heysham 2 - Level 1 Emergency Demonstration Exercise RAGNORAK

Executive summary

Purpose of Intervention

The purpose of this intervention was to observe and evaluate a Level 1 emergency demonstration exercise at EDF Energy Nuclear Generation Limited’s (NGL) Heysham 2 power station, in line with the ONR’s inspection programme contained in the Heysham 2 Integrated Intervention Strategy for 2020/21.

Interventions Carried Out by ONR

In my capacity of nominated site inspector for Heysham 2 Power Station, the head of operating reactors and I observed a Level 1 emergency demonstration exercise rated against Licence Condition (LC) 11 – Emergency Arrangements. The scenario was agreed in advance by ONR. The demonstration was carried out under COVID-19 restrictions so only the command centres were exercised using simulated inputs.

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

No system based inspection was undertaken hence, this is not applicable for this intervention.

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

There was a strong nuclear safety focus and the exercise provided an adequate demonstration of Heysham 2 Power Station’s emergency arrangements and I awarded a rating of Green against LC11. However, there were a few points of learning that were discussed during the feedback that the station should be cognisant of.

Conclusion of Intervention

I regarded that the demonstration provided an adequate demonstration of Heysham 2’s emergency arrangements and awarded a rating of Green against LC11.

There were a few minor observations during the exercise that will be taken forward by the station as learning points to enhance and improve the implementation of their emergency arrangements. No issues were raised

There is no additional regulatory action is needed over and above the planned interventions at Heysham 2 Power Station.