Hunterston B planned Intervention
- Site: Hunterston B
- IR number: 16-138
- Date: October 2016
- LC numbers: 11
Purpose of intervention
The purpose of this intervention was to undertake Licence Condition (LC) compliance inspections at EDF Energy Nuclear Generation Ltd's (NGL's) Hunterston B power station, in line with the planned inspection programme contained in the Hunterston B Integrated Intervention (IIS) for 2016/17.
Interventions Carried Out by ONR
This intervention included compliance inspections against the following Licence Conditions:
- Licence Condition 11 - Emergency Arrangements
I also undertook a routine quarterly review of regulatory issues with the station technical safety support manager.
Explanation of Judgement if Safety System Not Judged to be Adequate
Not applicable as no system inspection was undertaken during this intervention.
Key Findings, Inspector's Opinions and Reasons for Judgements Made
I undertook a planned intervention against LC 11, during which I:
- Reviewed the station's progress towards transition of its beyond design basis accident (BDBA) enhancements (post Fukushima) into its emergency arrangements. I reviewed the report from a fleet-wide surveillance undertaken by Independent Nuclear Assurance (INA) into the status of the transition programme. This report identified shortfalls across the fleet and at Hunterston B in relation to the timely completion of physical modifications; delays in implementing maintenance and configuration control arrangements for back-up equipment tie-in points and completion of revised emergency response procedures. I was satisfied that in the time since the review was completed the station has made good progress towards completing the outstanding elements of the transition programme.
- Reviewed the most recent three year update to the station emergency handbook. I made general observations which have been communicated to the station emergency preparedness engineer; I was assured that the next scheduled update would incorporate the minor discrepancies identified. Of particular note, the handbook now demonstrably includes reference and detail relating to BDBA arrangements and information on how they dovetail with existing preparedness and response arrangements. There is clear reference to the interfaces between the station, the through-life management partner arrangement for deploying equipment from the strategic storage facility at Bellshill and the staging post interactions with the station command chain.
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
In relation to LC 11, I considered that an inspection rating of 'Green' is warranted on the basis that the station continues to exhibit a strong emergency preparedness and response capability.
There are no findings from this inspection that could significantly undermine nuclear safety.